What to pack for San Francisco in May
- long sleeves and a warm layer
- a medium jacket
Humidity averages 77%; max daily wind around 32 km/h.
How May compares
Best months in San Francisco: April–October. See the full best time to visit San Francisco guide.
San Francisco in May: the details
In May, San Francisco sees average daytime highs of 17°C (62°F) and overnight lows of 11°C (52°F). Rainfall totals roughly 25 mm across 3.3 rainy days, and the sun shines about 12.6 hours per day with 14 hours of daylight mid-month. Relative humidity averages 77%.
In context: May is the 6th-warmest month and the 7th-wettest in San Francisco. The sunniest month is June (13.2 h/day).
| Metric | May average |
|---|---|
| Daytime high | 17°C / 62°F |
| Overnight low | 11°C / 52°F |
| Rainfall | 25 mm over 3.3 rainy days |
| Sunshine | 12.6 h/day (14 h daylight) |
| Humidity | 77% |
| Travel score | 10.0 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for San Francisco, United States (37.77, -122.42) — see our methodology. Actual conditions vary year to year.
Not set on San Francisco? Browse the best places to visit in May ranked by travel score.
Frequently asked questions
How hot is San Francisco in May?
Daytime highs in San Francisco in May average 17°C (62°F); nights drop to about 11°C.
Does it rain in San Francisco in May?
Expect around 3.3 rainy days and 25 mm of rainfall in May.
Is May a good time to visit San Francisco?
May is one of the best months to visit San Francisco. Overall travel score: 10.0/10. The best months are April–October.
Also good in May, near San Francisco
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