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Water temperature in Channel Islands of California (CA) in August

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Is it warm enough to swim in Channel Islands of California in August? Average water temperature in Channel Islands of California in August is 64.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Channel Islands of California in August is 70.9°F, and the coldest is 57.9°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Channel Islands of California

Changes water temperature in Channel Islands of California in August 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 162.4°F64.4°F61°F69.3°F
August 262.6°F65.3°F60.8°F69.6°F
August 363°F64.9°F61°F69.4°F
August 462.6°F65.1°F61.2°F69.1°F
August 563.7°F64.2°F61.2°F68°F
August 663.1°F64°F61.2°F68.4°F
August 763.7°F64.2°F60.4°F68.9°F
August 863.3°F64.6°F60.3°F69.3°F
August 963.9°F64.8°F60.6°F69.1°F
August 1064.8°F63.5°F60.4°F69.6°F
August 1165.8°F63.3°F60.3°F69.8°F
August 1265.5°F63.9°F59.7°F69.4°F
August 1365.5°F64.4°F60.1°F68.9°F
August 1464.4°F63.7°F59°F69.1°F
August 1563.9°F64.2°F59.2°F69.1°F
Day 2025 2024 Min Max
August 1664.4°F64.6°F59°F68.9°F
August 1764.8°F66.4°F59.9°F69.1°F
August 1864.6°F66°F60.3°F70°F
August 1965.3°F64.4°F60.4°F70.9°F
August 2066°F64.4°F60.3°F70.7°F
August 2167.5°F64.8°F59.7°F70.7°F
August 2268°F64°F59.4°F70.9°F
August 2368°F62.2°F59.2°F69.8°F
August 2467.3°F62.1°F60.1°F68.9°F
August 2567.1°F61.7°F60.4°F69.4°F
August 2666.9°F63.1°F60.1°F68.9°F
August 2768.2°F63.3°F59.9°F69.3°F
August 2866.9°F63.3°F59.7°F69.8°F
August 2968.4°F63.5°F58.8°F69.6°F
August 3068.2°F63.7°F59.2°F68.7°F
August 3169.4°F64.4°F57.9°F69.4°F
Channel Islands of California water temp chart in August

Average water temperature in Channel Islands of California in August over a decade

20162017201820192020
66.9°F65.3°F68.9°F64.4°F65.8°F
20212022202320242025
65.3°F66°F66.6°F64°F63.1°F

Channel Islands of California sea state in August

Chart comparing the height of waves in Channel Islands of California in August 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 Channel Islands of California in August

Channel Islands of California 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 August?

Want to know where the water temperature in August 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 August

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

AvrMinMax
San Diego69.8°F62.6°F76.6°F
Santa Monica68.4°F60.8°F74.7°F
La Jolla Cove70.9°F63.5°F77.7°F
Lake Tahoe68°F63.9°F72°F
Los Angeles67.8°F62.2°F72.9°F
Santa Rosa Island64.2°F58.3°F70.2°F
San Miguel Island61.7°F55.4°F67.5°F
Goleta64.8°F58.6°F72.3°F
Campus Point Beach64.8°F58.6°F72.3°F
More Mesa Beach64.9°F58.6°F72.3°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 Channel Islands of California 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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