San Francisco 氣候 and Average 天氣
氣候 of San Francisco: average temperatures, rainfall and seasons month by month.
氣候 in San Francisco month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| 月份 | Avg high | Avg low | 雨fall | Rating |
|---|---|---|---|---|
| 一月 | 15° | 8° | 84 mm | ★★★☆☆ |
| 二月 | 15° | 9° | 141 mm | ★★★☆☆ |
| 三月 | 18° | 10° | 76 mm | ★★★★☆ |
| 四月 | 17° | 10° | 52 mm | ★★★★☆ |
| 五月 | 19° | 11° | 15 mm | ★★★★★ |
| 六月 | 19° | 12° | 0 mm | ★★★★★ |
| 七月 | 19° | 13° | 2 mm | ★★★★★ |
| 八月 | 21° | 14° | 1 mm | ★★★★★ |
| 九月 | 21° | 14° | 4 mm | ★★★★★ |
| 十月 | 22° | 13° | 19 mm | ★★★★★ |
| 十一月 | 17° | 10° | 104 mm | ★★★☆☆ |
| 十二月 | 14° | 9° | 148 mm | ★★★☆☆ |
氣候 type: Mediterranean. 來源： Open-Meteo archive (ERA5).
Recent extremes in San Francisco
高est and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How San Francisco compares，天氣為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 | 646 mm |
| Napa | 59 km | 15°C | +1°C warmer | 768 mm |
| Santa Clara County | 62 km | 16°C | +2°C warmer | 555 mm |
| Sacramento | 121 km | 17°C | +3°C warmer | 692 mm |
| Point Lobos State Natural Reserve | 146 km | 14°C | about the same | 580 mm |
氣候 by attraction in San Francisco
2 attractions mapped in this atlas
氣候 by airport in San Francisco
1 airports mapped in this atlas
氣候 by district in San Francisco
2 districts and neighborhoods mapped in this atlas
氣候 by zip / postal code in San Francisco
2 zip and postal codes mapped in this atlas
氣候 by area code in San Francisco
1 area codes mapped in this atlas
最佳旅遊時間 San Francisco
Go in 五月, 六月, 七月, 八月, 九月 and 十月. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: 一月, 二月 and 十二月 - expect the least comfortable mix of heat, cold or rain.
What this means for San Francisco
Today is about average for 八月. The forecast high of 22°C is in line，天氣為the 21°C typical for this month.
雨 is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in 六月至八月.
The gap between the warmest and coldest month averages 6°C - an unusually even climate through the year.
What至pack, what至skip
- 週日glasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid 一月, 二月 and 十二月 - historically the least comfortable months here.
摘要
San Francisco is a city in California. San Francisco is known for Golden Gate Bridge and cable cars. 人口約為810.000.
目前氣溫為16°C (61°F) in San Francisco，天氣為陰天. 體感溫度為15°C. 今天氣溫介於14°C至22°C. 降雨機率為2%. Sightseeing conditions score 9.3/10 - 極佳 — 現在適合出發.
最佳旅遊時間是San Francisco is 五月, 六月, 七月, 八月, 九月 and 十月. 氣候為Mediterranean. 一月, 二月 and 十二月 tend至be the least comfortable months. 十月 is the warmest month，天氣為average highs near 22°C, while 一月 is the coldest，天氣為lows near 8°C.
The closest major airport is San Francisco International Airport (SFO), about 17 km away. Nearby highlights include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve and Pinnacles National Park.
簡單來說。 Today is about average for 八月. The forecast high of 22°C is in line，天氣為the 21°C typical for this month. The best window至be outside is roughly 2 PM至5 PM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in San Francisco today at 9.3/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about San Francisco
| 類型 | City |
|---|---|
| State | California |
| 國家 | 美國 |
| 洲 | 北美洲 |
| 座標 | 37°46′29.6″N 122°25′9.8″W (37.7749, -122.4194) |
| 人口 | 810.000 |
| Known for | Golden Gate Bridge and cable cars |
| 當地時間 | 10:19 PM (UTC-07:00) |
| Best months | 五月, 六月, 七月, 八月, 九月 and 十月 |
| 氣候 | Mediterranean |
天氣 map for San Francisco
Animated model layers. Pick a layer至load it.
Animated layers by 風y. For pin-level detail and nearby places, see the interactive map below.
Explore San Francisco
Every topic we hold for this place, and the same topic for the places around it.
氣候 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 北美洲.
What is the weather like in San Francisco現在?
It is currently 16°C (61°F)，天氣為陰天. 濕度 is 93% and wind is 19 km/h.
When is the best time至visit San Francisco?
五月, 六月, 七月, 八月, 九月 and 十月 offer the most comfortable conditions in San Francisco, which has a Mediterranean climate. 一月, 二月 and 十二月 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 10:19 PM.
How many people live in San Francisco?
San Francisco has a population of approximately 810.000.
What is the nearest airport至San Francisco?
The closest airports are San Francisco International Airport (SFO), 17 km away.
What are the top things至do in San Francisco?
Popular options include Alcatraz Island, Golden Gate Bridge, Point Lobos State Natural Reserve, Pinnacles National Park, 七月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. |
|---|---|
| 預報 and observations | Open-Meteo (ECMWF and national models). |
| 空氣品質 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 氣候 averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National 天氣 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 八月 24, 2026 at 10:19 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
