San Francisco 天気 予報
San Francisco weather: 15°C, 曇り. 時間別 forecast, 14-day outlook, UV, air quality and the best timeからvisit.
San Francisco weather in 9月
One of the best monthsからvisit San Francisco.
9月 runs 3°C warmer than the annual average in San Francisco.
天気 map for San Francisco
Animated model layers. Pick a layerからload it.
Animated layers by 風y. For pin-level detail and nearby places, see the interactive map below.
気候 in San Francisco month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| 月 | Avg high | Avg low | 雨fall | Rating |
|---|---|---|---|---|
| 1月 | 15° | 8° | 84 mm | ★★★☆☆ |
| 2月 | 15° | 9° | 141 mm | ★★★☆☆ |
| 3月 | 18° | 10° | 76 mm | ★★★★☆ |
| 4月 | 17° | 10° | 52 mm | ★★★★☆ |
| 5月 | 19° | 11° | 15 mm | ★★★★★ |
| 6月 | 19° | 12° | 0 mm | ★★★★★ |
| 7月 | 19° | 13° | 2 mm | ★★★★★ |
| 8月 | 20° | 14° | 1 mm | ★★★★★ |
| 9月 | 21° | 14° | 5 mm | ★★★★★ |
| 10月 | 22° | 13° | 19 mm | ★★★★★ |
| 11月 | 17° | 10° | 104 mm | ★★★☆☆ |
| 12月 | 14° | 9° | 148 mm | ★★★☆☆ |
気候 type: Mediterranean. 出典： Open-Meteo archive (ERA5).
訪問に最適な時期 San Francisco
Go in 5月, 6月, 7月, 8月, 9月 and 10月. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: 1月, 2月 and 12月 - expect the least comfortable mix of heat, cold or rain.
Whatからpack, whatからskip
- Layers - the daily swing is 14°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid 1月, 2月 and 12月 - historically the least comfortable months here.
How San Francisco compares、nearby places
Annual averages, and the difference against San Francisco.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| San Francisco County | 0 km | 14°C | about the same | 647 mm |
| Napa | 59 km | 15°C | +1°C warmer | 766 mm |
| Santa Clara County | 62 km | 16°C | +2°C warmer | 554 mm |
| Sacramento | 121 km | 17°C | +3°C warmer | 690 mm |
| Point Lobos State Natural Reserve | 146 km | 14°C | about the same | 577 mm |
時間帯別のSan Francisco 予報を見る
San Francisco weather - more answers
Explore San Francisco
Every topic we hold for this place, and the same topic for the places around it.
天気 for related places
Frequently asked questions
Where is San Francisco?
San Francisco is a city in California. Its coordinates are 37.7749, -122.4194. It lies in 北アメリカ.
What is the weather like in San Francisco現在?
It is currently 15°C (60°F)、曇り. 湿度 is 85% and wind is 13 km/h.
When is the best timeからvisit San Francisco?
5月, 6月, 7月, 8月, 9月 and 10月 offer the most comfortable conditions in San Francisco, which has a Mediterranean climate. 1月, 2月 and 12月 are usually the hardest months for outdoor plans.
What time zone is San Francisco in?
San Francisco observes America/Los_Angeles (UTC-07:00). The local time is 4:32 PM.
How many people live in San Francisco?
San Francisco has a population of approximately 810.000.
What is the nearest airportからSan Francisco?
The closest airports are San Francisco International Airport (SFO), 17 km away.
What are the top thingsからdo in San Francisco?
Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Pinnacles National Park, 7月ia Pfeiffer Burns State Park and Emerald Bay State Park.
What places are in San Francisco?
San Francisco covers 8 places in this atlas, including Alcatraz Island, Golden Gate Bridge, San Francisco International Airport, Fisherman's Wharf, Mission District and ZIP Code 94102.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| 予報 and observations | Open-Meteo (ECMWF and national models). |
| 大気質 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 気候 averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National 天気 Service. |
| 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 10月 26, 2026 at 4:32 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
