San Francisco International Airport Weather Forecast
San Francisco International Airport weather: Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
San Francisco International Airport is an airport in San Francisco. San Francisco International Airport (SFO) is a commercial airport.
The best time to visit San Francisco International Airport is May, June, July, August, September and October. The climate is Mediterranean. January, February and December tend to be the least comfortable months. September is the warmest month with average highs near 73°F, while January is the coldest with lows near 46°F.
Nearby highlights include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve and Pinnacles National Park.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Climate in San Francisco International Airport month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 59° | 46° | 3,0 in | ★★★☆☆ |
| February | 60° | 47° | 5,5 in | ★★★☆☆ |
| March | 64° | 49° | 3,1 in | ★★★★☆ |
| April | 64° | 49° | 2,0 in | ★★★★☆ |
| May | 66° | 51° | 0,6 in | ★★★★★ |
| June | 69° | 53° | 0,0 in | ★★★★★ |
| July | 71° | 55° | 0,1 in | ★★★★★ |
| August | 73° | 57° | 0,0 in | ★★★★★ |
| September | 73° | 57° | 0,2 in | ★★★★★ |
| October | 73° | 55° | 0,6 in | ★★★★★ |
| November | 63° | 50° | 3,3 in | ★★★★☆ |
| December | 59° | 48° | 5,7 in | ★★★☆☆ |
Climate type: Mediterranean. Source: Open-Meteo archive (ERA5).
Weather map for San Francisco International Airport
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Best time to visit San Francisco International Airport
Go in May, June, July, August, September and October. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Explore San Francisco International Airport
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is San Francisco International Airport?
San Francisco International Airport is an airport in San Francisco. Its coordinates are 37.6213, -122.379. It lies in North America.
When is the best time to visit San Francisco International Airport?
May, June, July, August, September and October offer the most comfortable conditions in San Francisco International Airport, which has a Mediterranean climate. January, February and December are usually the hardest months for outdoor plans.
What are the top things to do in San Francisco International Airport?
Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Pinnacles National Park, Julia Pfeiffer Burns State Park and Emerald Bay State Park.
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| Place data | USPOTUS Atlas dataset (airports) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 22, 2026 UTC. Live blocks refresh every 15 minutes; climate averages monthly.
