Average monthly water temperature in Foster City, the United States of America
On this page you find the mean water temperature over the year in Foster City (California), the United States of America. Get insights into the water temperature fluctuations and discover what they mean for visitors.
Water in Foster City maintains a consistently cool profile. The warmest month, June, has an average temperature of 14°C (57°F).
The coldest water temperature month is January, averaging 12°C (54°F). These conditions are ideal for enjoying peaceful, less crowded water activities.
Foster City Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Foster City - and find the best time to visit.
Foster City 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Foster City climate overview or explore weather in the United States of America.
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