San fran weather averages

The wettest month is January with an average of mm of rain. Sunrise Sunset Annual Averages.

In San Francisco, the summers are long, comfortable, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. Based on the tourism score , the best time of year to visit San Francisco for warm-weather activities is from late June to early October. The warm season lasts for 4. The cool season lasts for 2. The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. La Serena, Chile 5, miles away and Albany, Australia 9, miles are the far-away foreign places with temperatures most similar to San Francisco view comparison.

San fran weather averages

Famous for the Golden Gate bridge, San Francisco has dry and warm summers, but mild and wet winters. Visitors to San Francisco may want to take advantage of the long hour of sunshine during the summer months, and this is also statistically the driest time of the year. The area can commonly experience foggy weather which forms over the Pacific Ocean and often drifts into the city, especially during the spring and summer months when the sea temperatures are at their coldest. These fogs can bring cold weather during the summer months, which visitors should be aware of and at times they can persist all day. Temperatures do not fall dramatically during the winter, however winter visitors should be prepared for the higher probability of rain. Spring starts off mild and wet with March seeing average daily highs of However, this is a transition season as by May, the average daily temperatures have risen to There is plenty of sunshine throughout the season with an average of 10 hours in May. The summer months in San Francisco are dry with June, July and August seeing an average of 5mm for the entire season. The summer months also see the longest sunshine hours with 11 hours per day in June. Daily temperatures average in the low twenties, but visitors in the summer must be aware that the winds are statistically at their strongest so can give some cooling breezes off the sea. Summer months can often see fog developing over the colder ocean waters, which drift across the city to produce colder summer days than would normally be expected. Average daily sunshine hours steadily decrease throughout the autumn, but September sees the warmest month with average daily temperatures of

There is plenty of sunshine throughout the season with an average of 10 hours in May. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer. The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, san fran weather averages, over a given period of years.

Not the location you were looking for? Other matching results or Interactive Map Search. North winds 15 to 25 kt with gusts up to 30 kt and rough waters expected. Conditions will be hazardous to small craft. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and rough waters expected. For the Gale Warning, north winds 15 to 25 kt with gusts up to 35 kt and rough waters expected.

In San Francisco, the summers are long, comfortable, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy. Based on the tourism score , the best time of year to visit San Francisco for warm-weather activities is from late June to early October. The warm season lasts for 4. The cool season lasts for 2. The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. La Serena, Chile 5, miles away and Albany, Australia 9, miles are the far-away foreign places with temperatures most similar to San Francisco view comparison. In San Francisco, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. The clearer part of the year in San Francisco begins around May 21 and lasts for 5. The cloudier part of the year begins around October 22 and lasts for 7.

San fran weather averages

Getting today's weather or a forecast for the upcoming week is easy, but if you're planning a visit , you want to know about the climate—what it's generally like. The averages may be more helpful than short-term weather forecasts. If you're planning a San Francisco vacation, go to the San Francisco vacation planner for more information. Some locals claim there's a phenomenon called " earthquake weather ," which they say is hot and dry. This myth goes back to ancient Greece. The truth is that earthquakes start miles underground. They aren't affected by temperature and happen in any weather. Summer in San Francisco is sometimes gloomy, foggy, and chilly.

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September sees around 9 hours of sunshine per day, but this falls to 6 hours in November. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. The month with the least rain in San Francisco is July , with an average rainfall of 0. The black lines are lines of constant solar elevation the angle of the sun above the horizon, in degrees. Apart from annual averages, the data is also available in hourly interval in CSV format. In , the shortest day is December 21 , with 9 hours, 33 minutes of daylight; the longest day is June 20 , with 14 hours, 47 minutes of daylight. The average water temperature experiences some seasonal variation over the course of the year. Within 10 miles contains significant variations in elevation 1, feet. For each hour between AM and PM of each day in the analysis period to , independent scores are computed for perceived temperature, cloud cover, and total precipitation. Loading weather chart The month with the most wet days in San Francisco is February , with an average of 8. In San Francisco, the summers are long, comfortable, arid, and mostly clear and the winters are short, cold, wet, and partly cloudy.

The warmest month with the highest average high temperature is September The month with the lowest average high temperature is December The month with the highest average low temperature is September

Privacy Policy. Visitors to San Francisco should be aware of the short sunshine hours, with around 5 hours of sunshine per day in December and January. This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. The warm season lasts for 4. What is Average Temperature? The percentage of time spent at various humidity comfort levels, categorized by dew point. Average Sea Temp. Most rainfall. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed both rain and snow fell in the same day. Click on each chart for more information. From bottom most yellow to top most gray , the color bands indicate: full daylight, twilight civil, nautical, and astronomical , and full night. Among wet days, we distinguish between those that experience rain alone , snow alone , or a mixture of the two. Not the location you were looking for? Tree limbs could be blown down and a few power outages may result. The figure below presents a compact representation of the sun's elevation the angle of the sun above the horizon and azimuth its compass bearing for every hour of every day in the reporting period.