San Francisco Weather: Your Guide to Sunny Days & Cool Nights!

Does the climate of a city truly define its character? In the case of San Francisco, California, the answer is a resounding yes. Its unique weather patterns contribute significantly to the city's distinct charm and allure, shaping everything from its architecture to its cultural identity.

The juxtaposition of the seasons in San Francisco creates a captivating environment. Summers, though seemingly long, are typically comfortable, arid, and blessed with clear skies. Winters, in contrast, are short, characterized by cold, wet conditions and a partly cloudy atmosphere. This dynamic shift in weather is a defining feature of the city.

To illustrate the climate's influence further, heres a breakdown of typical conditions:

The city's unique geographical position, nestled along the shores of the Pacific Ocean and near San Francisco Bay, plays a pivotal role in shaping its climate. The proximity to the ocean results in moderate temperatures throughout the year. Even during the warmest days, the temperature consistently cools down to below 70 degrees Fahrenheit at night, a testament to the marine influence.

For those planning a visit, understanding the seasonal changes is crucial. Seasonal shifts lead to a moderate variation in temperatures. The average maximum daytime temperatures typically range from a comfortable 23C in September to a more moderate 14C in January, the coolest month. These details contribute to the appeal of San Francisco as a destination that is neither excessively hot nor freezing cold.

The Pacific Ocean's influence is not just limited to air temperature, it significantly impacts the water temperature. For those interested in aquatic activities, the water temperature's variability is something to consider. The warmest water temperature occurs in September, reaching an average of 58F (14.4C). Comparatively, the months with cooler water last from December 19 to June 15, with an average temperature below 54F (12.2C). The Pacific Ocean's water remains rather cold, with temperatures averaging around 53F (11.7C) in May, even when air temperatures measure highs of 65F (18C). These variations highlight the diverse environmental conditions present within the city.

Monthly averages paint a comprehensive picture of the local weather patterns. These measurements can be derived from data gathered at San Francisco International Airport, as well as downtown near Buchanan and Hermann Streets. For instance, during May, the weather averages show temperatures around 66F (18.9C), with nighttime temperatures feeling around 51F (10.6C). Rainfall in May is relatively low, averaging 0.55 inches with approximately two rainy days.

The climate contributes not only to the comfort but also to the natural beauty and appeal of the city. The near-constant humidity, which hovers around the 70% mark throughout the year, contributes to a lush and verdant environment, while the consistent presence of sunshine for about 11 hours each day, especially in the month of May, adds to the overall charm.

Comparing San Francisco's climate with other global destinations offers some valuable insights. The average annual maximum temperature in San Francisco is 19C. This is in contrast to places like Rome, Italy, where the average annual temperature is 20C, known for its sunny summers and comfortable winters. Such comparisons reveal the uniqueness of San Francisco's temperature profile.

The climate of San Francisco is further illustrated by its rainfall patterns. The annual rainfall stands at 581 mm or 22.9 inches. The wettest months are typically January, with over 4 inches of rain. These rainfall patterns add to the specific features of the local climate and have a significant impact on local vegetation and landscapes.

In essence, the climate of San Francisco is an integral part of its identity, shaping its lifestyle, appearance, and overall character. Its moderate temperatures, along with the variability in conditions, are major factors in the city's magnetism for residents and tourists. Understanding the climates character helps visitors truly embrace the uniqueness of San Francisco, which sets it apart from many other locations worldwide.

Related: ["In san francisco, the summers are long, comfortable, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy.","Over the course of the year, the temperature typically varies from 45\u00b0f to 72\u00b0f and is rarely below 39\u00b0f or above 83\u00b0f.","San francisco averages just three days a year when the temperature reaches 90 degrees fahrenheit, and even fewer over 100 (38 \u00b0c).","No matter how warm the day, at night the temperature always cools to less than 70 degrees.","The city's hottest days usually occur in september and october.","Here are the average temperatures.","San francisco international airport, usa).","Averages are for san francisco international airport, which is 11 miles from san francisco.","Weather by customweather, \u00a9 2025.","Throughout the year, san francisco experiences fairly consistent temperatures, with monthly averages hovering between 45.9\u00b0f (7.7\u00b0c) and 72.5\u00b0f (22.5\u00b0c).","Relative humidity remains quite steady, oscillating around the 70% mark all year round, contributing to a humid and pleasant climate.","San francisco weather averages and climate san francisco, california.","Monthly temperature, precipitation and hours of sunshine.","A climate graph showing rainfall, temperatures and normals.","Find out the average temperature, precipitation, humidity and sunshine hours for san francisco by month.","Compare the weather data from 1991 to 2021 and see the climate graph and table.","1955 was the coolest year in the history of san francisco, california.","The average daily high temperature was 61.2 \u00b0f, and the average low was 49.1 \u00b0f.","The month with the most rainfall in san francisco, california, is february, when the rain falls for 6 days and typically aggregates up to 1.38","The month of the year in san francisco with the warmest water is september, with an average temperature of 58\u00b0f.","The time of year with cooler water lasts for 5.9 months , from december 19 to june 15 , with an average temperature below 54\u00b0f.","September (71 degrees f) coldest months:","December and january (58 degrees f) wettest months:","January (over 4 inches of rain)","San francisco is located near a large body of water (e.g., ocean, sea, or large lake).","The average surface water temperature in san francisco is essentially constant during may, remaining around 53\u00b0f throughout.","In san francisco, california, the warmest month is september, with an average daily high temperature of 70.8 \u00b0f and an average low of 55.9 \u00b0f.","What's the coldest month in san francisco?","In san francisco, california, the coolest month is january , with an average daily high temperature of 58.4 \u00b0f and an average low of 46.9 \u00b0f.","San francisco, usa average weather.","Temperature, high temperature, low temperature, day temperature, night temperature, precipitation, daily sun hours, sea temperature.","Weather.com brings you the most accurate monthly weather forecast for san francisco, ca with average\/record and high\/low temperatures, precipitation and more.","San francisco temperatures compared world wide.","San francisco\u2019s average annual maximum temperature is 19\u00b0c.","Let\u2019s compare this with some popular tourist destinations:","The city of rome, italy, has an average annual temperature of 20\u00b0c, known for its sunny summers and comfortable winters.","San francisco is located near a large body of water (e.g., ocean, sea, or large lake).","The average surface water temperature in san francisco is essentially constant during march, remaining around 53\u00b0f throughout.","Average weather in san francisco in may.","The weather averages for the month of may, temperature averages around 66\u00b0f and at night it feels like 51\u00b0f.","In may, san francisco gets on an average 0.55inch of rain and approximately 2 rainy days in the month.","Humidity is close to 72%.","San francisco is located near a large body of water (e.g., ocean, sea, or large lake).","The average surface water temperature in san francisco is increasing during the summer, rising by 4\u00b0f, from 53\u00b0f to 58\u00b0f, over the course of the season.","Average maximum day and minimum night temperature.","In san francisco, seasonal changes bring about a moderate variation in temperatures.","Typically, average maximum daytime temperatures range from a comfortable 23\u00b0c in september to a moderate 14\u00b0c in the coolest month, january.","San francisco is located near a large body of water (e.g., ocean, sea, or large lake).","The average surface water temperature in san francisco is essentially constant during the winter, remaining within 1\u00b0f of 54\u00b0f throughout.","Summertime in san francisco is characterized by cool marine air and persistent coastal stratus and fog, with average maximum temperatures between 60\u00f8f and 70\u00f8f, and minima between 50\u00f8f and 55\u00f8f.","The mornings will typically find the entire city overcast followed by clearing on the warmer bay side, but only partial clearing on the cooler","Get the monthly weather forecast for san francisco, ca, including daily high\/low, historical averages, to help you plan ahead.","Average weather in san francisco in april.","The weather averages for the month of april, temperature averages around 64\u00b0f and at night it feels like 49\u00b0f.","Get the monthly weather forecast for san francisco, ca, including daily high\/low, historical averages, to help you plan ahead.","May weather averages for san francisco, usa.","Temperature, high temperature, low temperature, day temperature, night temperature, precipitation, daily sun hours, sea","Complete climate information for san francisco, california.","Find out how often it rains, snows, and the gets cold or hot in san francisco."] | ["The astrological symbol for aquarius, the eleventh sign of the year, is the waterbearer.","Numerology sign\/flickr (cc by 2.0).","Aquarians born on january 20 have deeply personal visions of what their personal and professional lives are meant to be.","They have a quiet determination that gets them through difficult times.","They are concerned about the image they project.","People born on january 20:","January 20 birthday horoscope predicts that you are an excellent communicator but have a quick temper.","The january 20th zodiac sign is aquarius.","Your astrological symbol is the water bearer.","You are a humanitarian who loves helping","When it comes to vedic astrology, your january 20 or january 21 birthday zodiac sign is capricorn for sure.","This sign is known for its humble origin, disciplined or challenged youth, gaining a lot of experience while dealing with harsh circumstances or people, and also, reaching the highest peaks of professional success and good reputation.","Discover the personality traits and dates of every zodiac sign including aries, taurus, gemini, cancer, leo, virgo, libra, scorpio, sagittarius, capricorn, aquarius, and pisces.","The january zodiac sign of aquarius begins with the first decan spanning january 20 through january 29.","The first decan of aquarius is ruled by uranus.","People born during this time embody the most intense traits of this already dramatic sign.","January 20th is the date when the sun ends its travels through capricorn.","Although it is quite possible that the sun is already in the sign of aquarius when a person is born, the energy of the entire date will shine through capricorn as it finally embraces roles of jupiter and the moon at the end of the road.","Capricorn, the tenth sign in the zodiac, belongs to those born between the dates of december 22nd and january 19th.","Learn all about the capricorn sign below.","Your mind is one of your greatest tools and you use it to effectively solve problems and meet challenges.","Zodiac sign for january is capricorn and aquarius.","Capricorn zodiac sign is from january 1 to january 20.","Aquarius zodiac sign is from january 21 to january 31.","January 19 to january 22 are in the cusp of capricorn and aquarius.","That means, people born on january 19, 20, 21 and 22 will have traits of both capricorn and aquarius.","January 20 birthday astrology, zodiac sign personality, compatibility and more by sonali o.","Verma 0 comments the science of astrology is based on the general assumption that the entire universe is an integral entity and that any change in it has a global and individual effect;","This is something that all types of astrology are based on.","There are 12 different horoscope signs, each with its own strengths, weaknesses, traits, desires, and way of viewing the world.","Your personal astrological sign is based on the position of the sun on the day you were born.","Take a look below to learn what your zodiac sign is, and click on each to discover their powerful traits and secrets.","At its most basic, this will determine which zodiac sign is your primary zodiac sign.","If you were born while the sun was still in capricorn then you are a capricorn but if the sun had transitioned into aquarius then you are an aquarius.","January zodiac sign date range.","Zodiac sign or star sign for people born on different january zodiac dates are as follows:","Star sign for people born from january 1 to january 19:","Star sign for people born from january 20 to january 31:","Zodiac sign of people born in january.","What is the zodiac sign for jan 15?","A complete guide to the zodiac sign.","Aquarius season spans from jan.","Here's everything to know about the air sign, according to an astrologer updated on january 20, 2025","The zodiac sign for january 20 is aquarius.","It suggests freshness, rejuvenation, progress and responsibility.","January is a month brimming with possibility, and so are the zodiac signs that fall within its boundaries.","If you were born in january, you're likely one of two signs:","Let's explore what makes each sign unique.","The january 20th zodiac sign is aquarius.","Your astrological symbol is the water bearer.","You are a humanitarian who loves helping people.","The aquarius birthday horoscope predicts that those of you born on this date are logical, secretive, and even strange creatures who happen to be highly thought of.","If you were born on january 20, you are an aquarius, the eleventh sign of the zodiac.","As an aquarius, you are known for your individuality, free spirit, and humanitarian nature.","People born under this sign are often described as eccentric, unconventional, and sometimes even a bit rebellious.","What sign is january 20?","People born on this day are aquarians.","They are born in the first decan of aquarius, on the first day of the season.","These aquarians have many typical aquarius traits.","Their individuality is strong, and they value freedom for themselves and others.","An aquarius born on january 20 is symbolized by the water bearer and has a quiet determination.","Learn about january 20 birthday astrology.","Each sign possesses unique characteristics and traits that shape the personalities of individuals born under them.","Determining your zodiac sign is simple, as it depends on the specific date of your birth.","If you are born on the 20 th of january, your zodiac sign is aquarius.","As an aquarius born on january 20, you are a cusp sign.","You have some traits of capricorn while embodying more traits of the aquarius.","Which is january 20 zodiac sign?","The zodiac sign for january 20 th is aquarius.","You have many unique qualities, including being independent, inventive, and intellectual.","Which is january 21 zodiac sign?","Zodiac sign for january 21 st is aquarius.","Aquarius is known to be a very friendly sign, and people with this sign are often independent and","The key lies in understanding that your zodiac sign is determined by the position of the sun on your birthdate, not by the constellations.","For those born during the transition of two zodiac signs, the cosmic puzzle becomes even more captivating.","Aquarius is the 11th astrological sign in the zodiac and it is situated to the east of capricornus and west to the pisces.","People born on between january 20 and february 18 are under the aquarius sign.","January 20 zodiac sign symbol.","The symbol of aquarius is the water bearer, which represents this zodiac sign\u2019s connection to freedom and knowledge.","The water bearer is usually depicted as a young person pouring two streams of liquid from an urn or jug.","The zodiac sign for january 21 is aquarius.","It is suggestive for the nurturing, progressive but also simple lives of these individuals and of a perpetual replenishment process of the whole earth."] | ["Say thanks to your followers in a blog.","Make it really special by singling out particular followers for your blog post.","Write a small piece on who they are, what they do, and why they rock.","Include their photo and a link back to x.","And then let them and your other followers know via x!","This one is always loved and shows you really do care about","With the get famous expansion, sims in the sims 4 can climb the ladder to stardom.","Here's how to get to the top fast.","Learn everything you need to know about the fame system introduced in the sims 4 get famous.","We go over star levels, perks, and more.","News, politics, culture, life, entertainment, and more.","Stories that matter to you.","They get lessons, audition, write songs all day, follow up on all leads and keep putting themselves out there and improving on their skills.","Some of these people make it.","All you have to do is watch interviews with ed sheeran to know what you need to do.","You do what ever it takes and find ways to finance your life to get you there.","We offer several ways for you to contact famousbirthdays.com.","Youtube isn\u2019t the place where you should be shy.","Especially, if you want to become a famous youtube singer.","Fill in your about section with some fun info about yourself and your channel.","Tell the world what makes you awesome, what type of content you shoot and share;","How often do you do it, what makes you so special\/fun\/useful etc.","One of the most asked questions is how to become famous?.","In this modern age, it\u2019s no big issue to get fame.but still many of us couldn\u2019t succeed in becoming famous throughout life.","Your profession, what do you do such as actor, musician, youtuber, instagram star or anything you do.","A short biography information about you.","Provide what did you do \u201cbefore fame\u201d, mean what did you do before you came to the work.","Trivia, write if you met with any celebrity or if any magazine has written about you.","This web site is free and forever!","You will find on this web site over 50,000 celebrity addresses.","Icon perk name fame rank what it does;","Allows your sim to form relationships with more famous sims.","Socializing with them can then help you to gain fame, with even more provided so long as they are higher rank than your sim.","I do post new projects on studios and ask my friends to advertise it but an average project i post gets no more than 20 views.","No matter how good i try, how many tags i put, or how many times i upload it to studios, it never gets famous.","That is a very old topic to discuss about so all scratchers get an idea.","Some people become famous because of their natural talents.","These people might be famous for singing, acting, or hitting a baseball.","Your natural beauty might even lead you to become a famous supermodel one day.","Other people may become famous for things they do \u2014 both good and bad.","A lot of famous youtubers started out as a teenager.","If you think you are old enough and you want to make videos, then go for it.","Most people don't usually care about the age aspect provided you're mature and offer interesting content.","Pay attention to which posts get the most reach, and try to duplicate the strategy you used to find more followers.","Regularly reviewing data can help you identify areas where you can adjust your strategy to help you get more followers on instagram.","Sure, but analytics can help you use instagram to better your business goals in tons of other","Try to meet famous people at conventions, or directly contact some of your favorite people through youtube or twitter.","Ask them if they want to make a collaborative video.","It's a great way to get more recognition and become a more prominent part of the youtube community.","Learn how to achieve fame in bitlife with strategies and tips to gain recognition and become a virtual celebrity.","Being consistent is the best way to get your videos seen.","Unlike facebook or instagram, where posting too often can get on peoples' nerves, people expect a lot of content from each creator on tiktok.","If you can get your average viewer count up, you\u2019ll be more visible to a greater number of new users.","What you'll need to become famous.","People don\u2019t get famous overnight;","It takes a lot of work, time, and some necessary factors.","Here\u2019s what you need to become famous:","Whether you want to become famous with your name or your brand, you need to cultivate an identity that\u2019s unique to you.","With the get famous expansion, sims in the sims 4 can climb the ladder to stardom.","Here's how to get to the top fast.","Fame certainly has its perks, and you'll find there are many paths to get to fame.","One of the best ones is to develop talent.","Then, you can market yourself and that talent to the world, building your base and making you famous.","Market yourself on social media to gain fans and followers.","Socialize with celebrities in your area to be part of their circle.","Join local theater or acting groups to perform.","Take classes in the field you want to pursue.","Choose your type of celebrity.","The quickest way to get rich & become famous is to choose a specific niche, improve your expertise in that field & follow the footprints of the leading personalities in that field.","For example, you\u2019re good at creating videos;","Then, you need to put all your efforts into creating likable videos.","There are a variety of different ways to become famous on the internet.","Some popular ways are streaming gameplay online or making unique content in the form of videos or writing.","Other famous internet stars are popular on social media.","Think of things that you like doing and create a strategy based on your skills.","And here are 7 relatively simple steps on that path.","Begin by making it all about others, not yourself.","If you are going to reach niche celebrity status, your first step is to become a truly trusted resource for others.","This means that you do the following:","Engage others daily, especially influencers."]