San Francisco, California Weather in May
United States · May climate averages and travel tips
Avg high19°C (67°F)
Avg low10°C (50°F)
Rainfall18 mm (0.7 in)
RatingExcellent 9.7/10
Expect mild days in San Francisco in May: the average high is 19°C (67°F) and the average low is 10°C (50°F). May is spring in United States. The month is very dry, with about 18 mm (0.7 in) of rain spread over 3 days. You get roughly 14 hours of daylight and a mix of sun and cloud.
Is May a good time to visit San Francisco?
Yes — May is one of the best months to visit San Francisco. The weather rates excellent (9.7/10) on our comfort score.
May weather at a glance
| Average high | 19°C (67°F) |
|---|---|
| Average low | 10°C (50°F) |
| Daily mean | 14°C (57°F) |
| Rainfall | 18 mm (0.7 in) |
| Rainy days (1 mm+) | 3 |
| Humidity | 77% |
| Cloud cover | 51% |
| Daylight | 14 hours |
| Est. sunshine | 7.5 hours/day |
| Wind | 9.3 km/h |
| vs April | 2°C warmer than April, with 20 mm less rain. |
What to pack for San Francisco in May
- T-shirts plus a light layer for the evening
- a sweater for cool nights
San Francisco weather in other months
Jan14°C / 6°C109 mmFairFeb15°C / 7°C93 mmGoodMar16°C / 8°C90 mmGoodApr17°C / 8°C38 mmExcellentMay19°C / 10°C18 mmExcellentJun22°C / 11°C6 mmExcellentJul23°C / 12°C1 mmExcellentAug23°C / 13°C1 mmExcellentSep24°C / 13°C4 mmExcellentOct22°C / 12°C34 mmExcellentNov18°C / 9°C55 mmExcellentDec14°C / 7°C123 mmFair
← AprilBest time to visit San FranciscoJune →
Nearby in May
- Los Angeles, California25°C · 8 mm
- Las Vegas, Nevada32°C · 4 mm
- San Diego, California24°C · 8 mm
- Tijuana24°C · 8 mm
- Mexicali36°C · 3 mm
- Phoenix, Arizona35°C · 6 mm
Where else is good in May? See where to go in May.