May · United States
Best time to visit San Francisco in May Weather, crowds & prices
Weather in San Francisco in May
Average temperature 14°C, 14 mm of rain, about 31 days with 6+ hours of sunshine and 76% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
9.5/10
Ranked #5 of 12 months
- Avg temp
- 14°C
- Rainfall
- 14 mm
- Humidity
- 76%
- Days with 6h+ sun
- 31
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in San Francisco scores 9.5/10 for sightseeing and cultural travel - an above-average month (#5 of 12). Expect around 14°C, 14 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Fog-kissed hills, bridges, and bay walks at their most pleasant from April through June.
May is one of the strongest months in San Francisco (5th)
Temperatures hover around 14°C (58°F) — the kind of month where neither heat nor cold forces the schedule.
At just 14 mm for the month, rain will not shape your plans; you get about 31 days with 6+ hours of sunshine and 14 hours of daylight.
On our climate-comfort scale this is one of the strongest months of the year for San Francisco at 9.5/10 (5th of 12), just behind July at 9.8/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Budget for mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in San Francisco in May?
- In May, San Francisco averages 14°C, 14 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 9.5/10.
- Is May a good time to visit San Francisco?
- May earns a 9.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in San Francisco in May?
- Expect about 14 mm of rain in May. Average humidity is 76% and there are about 31 days with 6+ hours of sunshine.
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