Foster City Weather in May
Thinking of visiting Foster City in May? Expect pleasant temperatures reaching 20°C (68°F) during the day, dropping to 11°C (52°F) at night, with minimal rainfall.
Rainfall in Foster City in May
The climate data from previous years indicates about 2 days of rain, averaging 5.7 mm (0.2 in) for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Foster City in May
The temperature in Foster City in May is excellent. Daytime highs reach 20°C (68°F), with nights dropping to 11°C (52°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Foster City in May
The city usually sees around 324 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Foster City in May
Average wind conditions reach 6 m/s (12 knots) in May. This creates notably windy weather that is clearly felt and can influence daily activities. Keep in mind this is an average. Some days are less intense, while others can be quite gusty.
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 Foster City.
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 Foster City's climate page.
Foster City Temperature in May
Min Temperature
11°C (52°F)
Max Temperature
20°C (68°F)
Water Temperature
13°C (55°F) *
Chance of Rain
8%
Precipitation
5.7 mm (0.2 in)
Rainy days
2 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 →
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What to Wear in Foster City 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. Expect water temperatures of around 13°C (55°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Foster City 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 Foster City's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Foster City climate overview or explore weather in the United States of America.
