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Water temperature in Channel Islands Beach (CA) in September

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Is it warm enough to swim in Channel Islands Beach in September? Average water temperature in Channel Islands Beach in September is 66°F and therefore is not suitable for comfortable swimming. The warmest sea in Channel Islands Beach in September is 73.6°F, and the coldest is 58.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Channel Islands Beach

Changes water temperature in Channel Islands Beach in September 2025, 2024

To get an accurate forecast for the water temperature in Channel Islands Beach 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 Beach, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 170.5°F66.7°F59.2°F71.6°F
September 269.6°F67.1°F59.7°F71.2°F
September 367.8°F66.6°F60.3°F70.9°F
September 466°F67.1°F59.7°F71.1°F
September 5 66.2°F59.4°F71.4°F
September 6 66.7°F59.4°F71.6°F
September 7 66.9°F59.5°F71.8°F
September 8 66.7°F59.7°F72.1°F
September 9 65.8°F60.1°F72.3°F
September 10 64°F60.8°F73°F
September 11 63.1°F60.8°F73.6°F
September 12 64.6°F59.2°F73.4°F
September 13 64.8°F58.6°F73°F
September 14 65.1°F58.3°F72.7°F
September 15 66.7°F58.5°F73.2°F
Day 2025 2024 Min Max
September 16 66°F58.8°F73°F
September 17 64.6°F60.1°F73°F
September 18 63.3°F61.3°F72.9°F
September 19 63.5°F61.7°F73°F
September 20 63.3°F61.9°F73.4°F
September 21 63.5°F61.3°F73°F
September 22 61.9°F60.4°F72.7°F
September 23 62.4°F60.6°F72.7°F
September 24 62.8°F61.2°F72.9°F
September 25 63°F61.5°F72.9°F
September 26 61°F61°F72.9°F
September 27 61.9°F61.9°F72.9°F
September 28 62.4°F61.7°F72.7°F
September 29 64°F61.9°F72.1°F
September 30 63°F61.7°F71.6°F
Channel Islands Beach water temp chart in September

Average water temperature in Channel Islands Beach in September over a decade

20152016201720182019
72.5°F67.6°F67.3°F67.1°F67.3°F
20202021202220232024
65.1°F63.5°F68.2°F65.8°F64.4°F

Channel Islands Beach sea state in September

Chart comparing the height of waves in Channel Islands Beach in September 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 Beach in September

Channel Islands Beach 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 September?

Want to know where the water temperature in September 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 September

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

AvrMinMax
San Diego69.1°F63.1°F75.6°F
Santa Monica68.4°F62.6°F73.4°F
La Jolla Cove70°F63.7°F76.1°F
Lake Tahoe64.9°F59°F70.5°F
Los Angeles68.2°F61.5°F74.3°F
Oxnard66°F58.3°F73.6°F
Port Hueneme66°F58.3°F73.6°F
Oxnard Shores66°F58.6°F73.4°F
Hollywood Beach66.4°F58.6°F73.8°F
Faria Beach65.7°F59.4°F73.2°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 Beach 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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