World sea water temperatures

Water temperature in Capitan (CA) in September

Is it warm enough to swim in Capitan in September? Average water temperature in Capitan in September is 64.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Capitan in September is 72.1°F, and the coldest is 57.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Capitan

Changes water temperature in Capitan in September 2025, 2024

To get an accurate forecast for the water temperature in Capitan for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Capitan, 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°F65.7°F57.7°F70.5°F
September 270.5°F66.7°F58.1°F70.5°F
September 370.2°F67.5°F58.3°F70.2°F
September 470.3°F68°F58.6°F70.3°F
September 5 67.1°F58.1°F69.4°F
September 6 66.9°F58.3°F69.6°F
September 7 67.6°F58.5°F70.2°F
September 8 67.5°F58.5°F70.7°F
September 9 66.6°F58.8°F71.2°F
September 10 65.7°F58.6°F71.8°F
September 11 63.9°F59°F72°F
September 12 63°F59°F71.8°F
September 13 62.6°F58.8°F71.8°F
September 14 63.3°F59.2°F71.8°F
September 15 64°F59°F71.4°F
Day 2025 2024 Min Max
September 16 63°F59.5°F71.2°F
September 17 61.7°F59.7°F71.4°F
September 18 60.6°F59.5°F71.2°F
September 19 61.7°F60.1°F71.2°F
September 20 63.3°F60.3°F71.8°F
September 21 64.2°F59.4°F71.4°F
September 22 63.9°F59°F71.6°F
September 23 64°F58.8°F71.4°F
September 24 63.5°F59.2°F72°F
September 25 63.1°F60.1°F72.1°F
September 26 63°F59.5°F72°F
September 27 63°F59.9°F72°F
September 28 63.5°F60.6°F72°F
September 29 64.2°F60.8°F71.6°F
September 30 63.9°F60.8°F70.5°F
Capitan water temp chart in September

Average water temperature in Capitan in September over a decade

20152016201720182019
71.1°F65.5°F66°F66.2°F66.4°F
20202021202220232024
65.7°F62.1°F67.6°F66.4°F64.4°F

Capitan sea state in September

Chart comparing the height of waves in Capitan 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 Capitan in September

Capitan 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
Haskell's Beach65.1°F58.5°F72.3°F
Goleta65.5°F59.2°F72.9°F
Campus Point Beach65.5°F59.2°F72.9°F
More Mesa Beach65.5°F59.4°F73.2°F
Arroyo Burro Beach65.7°F59.5°F73.4°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 Capitan 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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