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Water temperature in Foster City (CA) in June

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Is it warm enough to swim in Foster City in June? Average water temperature in Foster City in June is 59.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Foster City in June is 72.7°F, and the coldest is 51.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Foster City

Changes water temperature in Foster City in June 2025, 2024

To get an accurate forecast for the water temperature in Foster City for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Foster City, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of June.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
June 166.4°F67.3°F52°F67.3°F
June 264.9°F65.8°F52.2°F66.9°F
June 366.6°F64.2°F52.5°F69.3°F
June 466.7°F65.1°F52.7°F70.7°F
June 566.2°F66.4°F52.7°F70.7°F
June 666.6°F68.7°F52.5°F69.1°F
June 767.5°F66.9°F52.3°F67.5°F
June 867.5°F65.3°F52.2°F67.5°F
June 966.9°F66.6°F51.8°F68°F
June 1067.1°F66.4°F52°F68°F
June 1167.3°F67.3°F52.2°F69.4°F
June 1266.6°F68.4°F52.2°F69.1°F
June 1366.6°F68.7°F52.3°F68.7°F
June 1466.4°F67.5°F52°F67.8°F
June 1565.7°F66.9°F52.2°F69.4°F
Day 2025 2024 Min Max
June 1665.7°F66.7°F52.7°F68.9°F
June 1766.2°F64.8°F52°F69.8°F
June 1867.5°F65.8°F52.2°F71.8°F
June 1967.3°F66.2°F52.7°F70.5°F
June 2066°F65.8°F52.3°F71.2°F
June 2164.8°F65.5°F52°F71.4°F
June 22 64.2°F52.7°F71.2°F
June 2364.8°F66.6°F52.9°F71.1°F
June 2465.1°F65.8°F53.1°F71.4°F
June 2565.7°F65.5°F52.9°F70.7°F
June 2665.3°F66°F53.2°F72°F
June 2765.7°F66.9°F53.4°F72.7°F
June 2866.9°F67.3°F54°F71.2°F
June 2968.4°F68.4°F54.3°F70°F
June 3067.3°F68.9°F53.6°F70.3°F
Foster City water temp chart in June

Average water temperature in Foster City in June over a decade

20162017201820192020
57.9°F56.7°F65.8°F63.5°F68.5°F
20212022202320242025
68°F67.6°F66.4°F66.6°F66.4°F

Foster City sea state in June

Chart comparing the height of waves in Foster City in June over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Foster City in June

Foster City water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in June?

Want to know where the water temperature in June is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Best Beach Resorts in California in June

Places with the warmest average sea water temperature in California in June. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
San Diego65.5°F61°F70.5°F
Santa Monica64.6°F55°F70.2°F
La Jolla Cove66.6°F61.5°F71.1°F
Lake Tahoe57.9°F50.7°F69.1°F
Los Angeles63.3°F58.6°F68.9°F
Millbrae59.9°F51.8°F73.9°F
Mountain View59.4°F51.6°F71.2°F
Palo Alto59.4°F51.6°F71.2°F
San Leandro60.1°F51.8°F75°F
Oakland59.9°F51.8°F73.6°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Foster City is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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