Best Time to Visit
🇺🇸 San Francisco, United States · North America
Based on 30-year climate data (1991-2020) from Open-Meteo
Jan
14°
7°
Good
Feb
15°
7°
Good
Mar
16°
8°
Good
Apr
17°
9°
Great
May
19°
11°
Great
Jun
21°
12°
Great
Jul
21°
13°
Great
Aug
22°
13°
Great
Sep
23°
13°
Great
Oct
21°
12°
Great
Nov
17°
9°
Great
Dec
14°
7°
Good
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| January | 14°C | 7°C | 10 | 7h | 65% | 1 | Good | View |
| February | 15°C | 7°C | 9 | 8h | 65% | 1 | Good | View |
| March | 16°C | 8°C | 9 | 10h | 65% | 6 | Good | View |
| AprilRecommended | 17°C | 9°C | 5 | 11h | 65% | 6 | Great | View |
| MayRecommended | 19°C | 11°C | 3 | 13h | 65% | 9 | Great | View |
| JuneRecommended | 21°C | 12°C | 1 | 13h | 65% | 9 | Great | View |
| JulyRecommended | 21°C | 13°C | 0 | 14h | 65% | 9 | Great | View |
| AugustRecommended | 22°C | 13°C | 0 | 13h | 65% | 9 | Great | View |
| SeptemberRecommended | 23°C | 13°C | 0 | 12h | 65% | 6 | Great | View |
| OctoberRecommended | 21°C | 12°C | 3 | 10h | 65% | 6 | Great | View |
| NovemberRecommended | 17°C | 9°C | 6 | 8h | 65% | 1 | Great | View |
| December | 14°C | 7°C | 9 | 7h | 65% | 1 | Good | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Avg: 17°C high, 9°C low
Mild conditions at 17°C (63°F), layers recommended. Occasional showers possible. Nights cool to 9°C (48°F).
Avg: 21°C high, 13°C low
Mild conditions at 21°C (70°F), layers recommended. Rainfall is low. Nights cool to 13°C (55°F).
Avg: 20°C high, 11°C low
Mild conditions at 20°C (68°F), layers recommended. Rainfall is low. Nights cool to 11°C (52°F).
Avg: 14°C high, 7°C low
Mild conditions at 14°C (57°F), layers recommended. Occasional showers possible. Nights cool to 7°C (45°F).
The least favorable time to visit San Francisco is January and December. During this period, you can expect less favorable weather conditions.
January
Challenges: less favorable weather conditions
December
Challenges: less favorable weather conditions
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience.
Packing recommendations for visiting San Francisco during the best travel months (April, May, June), when temperatures range from 11°C to 19°C:
San Francisco has a Mediterranean climate (Koppen classification: Csb). The warmest month is September with highs of 23°C, while the coldest month is December at just 14°C. Annual rainfall averages 490mm across approximately 55 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 14 | 15 | 16 | 17 | 19 | 21 | 21 | 22 | 23 | 21 | 17 | 14 |
| Low °C | 7 | 7 | 8 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 9 | 7 |
| Rain Days | 10 | 9 | 9 | 5 | 3 | 1 | 0 | 0 | 0 | 3 | 6 | 9 |
| Rain mm | 97 | 100 | 75 | 37 | 18 | 3 | 0 | 1 | 2 | 21 | 46 | 90 |
| Sun h/day | 7 | 8 | 10 | 11 | 13 | 13 | 14 | 13 | 12 | 10 | 8 | 7 |
| Humidity % | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 |
| UV Index | 1 | 1 | 6 | 6 | 9 | 9 | 9 | 9 | 6 | 6 | 1 | 1 |
Considering alternatives to San Francisco? Compare the best travel months for nearby cities:
For a complete day-by-day weather breakdown including packing lists, activities, and local events, explore each month individually:
January
February
March
April
May
June
July
August
September
October
November
December
Explore weather guides for other popular destinations: