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.