February weather forecastSan Francisco, CA
February
Weather in February
San Francisco's February weather is slightly milder compared to January, with warmer days but few signs of spring yet. A noticeable change comes in the form of reduced average rainfall and lower humidity levels, creating a drier environment. February marks the end of winter’s strong grip, setting the stage for the transition to spring. While winters in San Francisco are generally not severe, the subtle increase in sunshine hours becomes more evident. March, on the horizon, introduces a warmer and more vibrant ambiance to the city.Temperature
San Francisco sees the arrival of February with an average high-temperature of a still moderate 57.9°F (14.4°C), indicating a subtle variation from January. During February nights, San Francisco witnesses a consistent average temperature of 46.2°F (7.9°C).Humidity
In February, the average relative humidity in San Francisco, California, is 74%.Rainfall
The month with the most rainfall in San Francisco is February, when the rain falls for 6 days and typically aggregates up to 1.38" (35mm) of precipitation.Ocean temperature
In San Francisco, in February, the average water temperature is 53.2°F (11.8°C).Note: Entering waters of 53.2°F (11.8°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
The average length of the day in February in San Francisco is 10h and 49min.On the first day of the month, sunrise is at 7:13 am and sunset at 5:32 pm. On the last day of February, sunrise is at 6:41 am and sunset at 6:02 pm PST.
Sunshine
In San Francisco, the average sunshine in February is 6.2h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: During February, 3 as the daily maximum UV index converts into the following advice:
Exercise prevention - Warding off sunburn is urged. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in February
San Francisco, CA
- Average high temperature in February: 57.9°F
The warmest month (with the highest average high temperature) is September (73.2°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in February: 46.2°F
The month with the highest average low temperature is September (56.7°F).
The coldest months (with the lowest average low temperature) are January and December (45.9°F).
Average pressure in February
San Francisco, CA
- Average pressure in February: 30.08"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in February
San Francisco, CA
- Average wind speed in February: 6.8mph
The windiest month (with the highest average wind speed) is May (7.6mph).
The calmest month (with the lowest average wind speed) is November (5.5mph).
Average humidity in February
San Francisco, CA
- Average humidity in February: 74%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is October (67%).
Average rainfall in February
San Francisco, CA
- Average rainfall in February: 1.38"
The wettest month (with the highest rainfall) is February (1.38").
The driest months (with the least rainfall) are July, August and September (0.08").
Average rainfall days in February
San Francisco, CA
- Average rainfall days in February: 6 days
The month with the highest number of rainy days is March (9.3 days).
The month with the least rainy days is June (1.9 days).
Average sea temperature in February
San Francisco, CA
- Average sea temperature in February: 53.3°F
The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).
Average daylight in February /
Average sunshine in February
San Francisco, CA
- Average daylight in February: 10h and 48min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in February: 6h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in February
San Francisco, CA
- Average sunshine days in February: 21.3 days
The month with the most sunshine days is October (25.8 days).
The month with the least sunshine days is March (20.8 days).
Average UV index in February
San Francisco, CA
- Average UV index in February: 3
The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in February
San Francisco, CA
- Average cloud cover in February: 31
The month with the most cloud cover is March (Cloud cover 36).
The months with the least cloud cover are July and September (Cloud cover 14).
Average visibility in February
San Francisco, CA
- Average visibility in February: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
