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San Francisco Weather in May
May in San Francisco sees daytime temperatures around 29°C (84°F) and lows of 24°C (75°F) at night. The excellent weather makes it a good time to visit.
Rainfall in San Francisco in May
You can expect rain on around a single day based on historical patterns, with 5.1 mm (0.2 in) average for the month. On the rare occasion it does rain, the shower can be quite heavy given the low total spread across a single day.
Temperature in San Francisco in May
The excellent temperature in San Francisco in May makes it a solid month to visit, with 29°C (84°F) during the day and 24°C (75°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights stay warm at around 24°C (75°F), so light bedding and good ventilation are worth thinking about.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, November and December typically offer the best weather for San Francisco.
San Francisco Temperature in May
Min Temperature
24°C (75°F)
Max Temperature
29°C (84°F)
Chance of Rain
2%
Precipitation
5.1 mm (0.2 in)
Rainy days
a single day
Humidity
68% *
* Data from: Puerto Vallarta, Mexico (37 KM, 23 Miles).
San Francisco Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Francisco - and find the best time to visit.
Best Places in Mexico in May
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Francisco in May
Warm but pleasant conditions in San Francisco in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection.
What To Do in San Francisco in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
San Francisco 3-Day Forecast
More climate data for San Francisco
See the full San Francisco climate overview or explore weather in Mexico.
Popular in May
Where to go in May - average daytime high across popular destinations.
San Miguel de Allende
32°C (90°F) Los Cabos
32°C (90°F) Puerto Vallarta30°C (86°F) Playa del Carmen
30°C (86°F) Tulum30°C (86°F) Cancún30°C (86°F) Puerto Peñasco28°C (82°F) Mexico City26°C (79°F) Bucket list
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