South San Francisco Weather in May
May in South San Francisco averages 19°C (66°F) during the day and 11°C (52°F) at night. With only 8 mm (0.3 in) of rainfall expected on average, it's a largely dry month.
Rainfall in South San Francisco in May
You can expect rain on roughly 3 days based on historical data, averaging 8 mm (0.3 in) for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in South San Francisco in May
South San Francisco has perfect weather in May, with days reaching 19°C (66°F) and nights cooling to 11°C (52°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in South San Francisco in May
With approximately 324 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in South San Francisco in May
Wind speeds average 6 m/s (12 knots) during May. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.
Average water temperature in May
With water at 13°C (55°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit South San Francisco.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our South San Francisco's climate page.
South San Francisco Temperature in May
Min Temperature
11°C (52°F)
Max Temperature
19°C (66°F)
Water Temperature
13°C (55°F) *
Chance of Rain
9%
Precipitation
8 mm (0.3 in)
Rainy days
3 days
Humidity
72% *
Windspeed
6 m/s (12 knots) *
Sunshine
324 hours *
Percentage Sunshine
73% *
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in South San Francisco in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home. With water temperatures around 13°C (55°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in South San Francisco in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our South San Francisco's climate page.
