VacationSage
The year at a glance
ExcellentGoodFairPoor Click a month to compare destinations.
The short answer
Go in June–October. The least comfortable stretch is December–February.
- Warmest month: September, average high 23°C (74°F).
- Coolest month: January, average high 14°C (58°F), lows near 7°C (44°F).
- Wettest month: December, about 164 mm (6.5 in) of rain.
- Driest month: July, about 2 mm (0.1 in).
Quick facts
- Currency
- United states dollar
- Plugs
- Type A, Type B
- Drives on the
- right
- Calling code
- +1
- Airports
- San Francisco International Airport (SFO)
Oakland San Francisco Bay Airport (OAK)
San Jose International Airport (SJC) - Population
- 808,988
Temperature and rain through the year
Average highAverage lowRain (mm, right axis)
Top sights in San Francisco
- Internet Archive U.S. non-profit organization and digital archive
- Transamerica Pyramid distinctive tower in San Francisco, California, USA
- San Francisco–Oakland Bay Bridge suspension bridge connecting San Francisco and Oakland, California, USA
- Golden Gate Park public park in San Francisco, California, USA
- San Francisco Museum of Modern Art modern art museum in San Francisco, California, USA
- USS Hornet 1943 Essex-class aircraft carrier
- California Academy of Sciences natural history museum in San Francisco
- M. H. de Young Memorial Museum fine arts museum located in San Francisco's Golden Gate Park
Ranked by how widely each place is covered across Wikipedia's language editions, a rough measure of fame rather than a recommendation.
Travel advisories
United States
The U.S. State Department does not issue advisories for travel within the United States.
United Kingdom
No FCDO warning against travel to any part of United States.
Latest change (2026-10-30): Updated information about Ebola (‘Entry requirements’ page).
Checked 2026-11-02.
Advisories are summarised from official sources and can change quickly; always read the source before you travel.
Month by month
| Month | Score | High | Low | Rain | Cloud | Dew point | Daylight |
|---|---|---|---|---|---|---|---|
| January | 3.0 Poor | 14°C 58°F | 7°C 44°F | 160 mm 6.3 in | 41% | 7°C45°F dry | 9.7 h |
| February | 4.2 Poor | 16°C 61°F | 8°C 46°F | 154 mm 6.1 in | 40% | 7°C45°F dry | 10.6 h |
| March | 5.7 Fair | 17°C 63°F | 8°C 47°F | 112 mm 4.4 in | 36% | 7°C45°F dry | 11.7 h |
| April | 7.5 Good | 19°C 65°F | 9°C 47°F | 57 mm 2.2 in | 30% | 8°C47°F dry | 13.0 h |
| May | 8.7 Excellent | 20°C 68°F | 10°C 50°F | 25 mm 1.0 in | 26% | 10°C49°F dry | 14.0 h |
| June | 9.6 Excellent | 21°C 71°F | 11°C 52°F | 7 mm 0.3 in | 22% | 11°C52°F comfortable | 14.6 h |
| July | 9.8 Excellent | 22°C 71°F | 12°C 53°F | 2 mm 0.1 in | 24% | 12°C54°F comfortable | 14.4 h |
| August | 10.0 Excellent | 22°C 72°F | 12°C 54°F | 2 mm 0.1 in | 25% | 12°C54°F comfortable | 13.5 h |
| September | 10.0 Excellent | 23°C 74°F | 12°C 54°F | 4 mm 0.1 in | 22% | 12°C54°F comfortable | 12.2 h |
| October | 9.8 Excellent | 22°C 72°F | 11°C 52°F | 42 mm 1.6 in | 24% | 10°C49°F dry | 11.0 h |
| November | 6.6 Good | 18°C 65°F | 9°C 48°F | 86 mm 3.4 in | 33% | 8°C47°F dry | 9.9 h |
| December | 3.3 Poor | 15°C 59°F | 7°C 45°F | 164 mm 6.5 in | 38% | 5°C42°F dry | 9.4 h |
Public holidays in the next 12 months
Holidays can mean closures, festivals and busier transport. National and regional (CA) public holidays for United States; school holidays are not included.
- November 2026
- Veterans Day
- Thanksgiving
- Day After Thanksgiving
- December 2026
- Christmas Day
- January 2027
- New Year's Day
- Martin Luther King Jr. Day
- February 2027
- Susan B. Anthony Day; Washington's Birthday
- March 2027
- Cesar Chavez Day
- May 2027
- Memorial Day
- June 2027
- Juneteenth National Independence Day (observed)
- Juneteenth National Independence Day
- July 2027
- Independence Day
- Independence Day (observed)
- September 2027
- Labor Day
More in Americas
Temperature, rain and dew point are 1991–2020 averages from a ~4 km climate grid; cloud cover is a 1981–2010 average. Recent years run warmer in most places, and a single trip can differ a lot. How this is calculated.