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Water temperature in T-Street Beach (CA) in September

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Is it warm enough to swim in T-Street Beach in September? Average water temperature in T-Street Beach in September is 70°F and therefore suitable for comfortable swimming. The warmest sea in T-Street Beach in September is 76.3°F, and the coldest is 63.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in T-Street Beach

Changes water temperature in T-Street Beach in September 2025, 2024

To get an accurate forecast for the water temperature in T-Street 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 T-Street 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 171.4°F70°F66°F74.7°F
September 270.7°F70.7°F66.4°F74.8°F
September 370.3°F70.9°F66.4°F74.5°F
September 470.5°F72.3°F65.5°F75.2°F
September 5 70.9°F64.6°F74.1°F
September 6 72.3°F66.6°F75.9°F
September 7 72.5°F65.3°F76.3°F
September 8 72.1°F69.1°F72.1°F
September 9 71.4°F66.4°F71.6°F
September 10 69.6°F65.3°F74.7°F
September 11 68.5°F65.3°F75.4°F
September 12 69.3°F65.5°F75.9°F
September 13 71.6°F65.7°F72.7°F
September 14 72.9°F64.8°F75.7°F
September 15 73.2°F64.6°F75.6°F
Day 2025 2024 Min Max
September 16 72.7°F65.3°F73.4°F
September 17 72°F65.3°F74.7°F
September 18 71.4°F66.6°F74.7°F
September 19 71.1°F65.3°F71.2°F
September 20 69.8°F67.6°F69.8°F
September 21 68.7°F65.1°F71.8°F
September 22 68.4°F64.9°F70.9°F
September 23 66.2°F65.1°F74.7°F
September 24 66.7°F65.3°F75°F
September 25 65.5°F65.5°F75.2°F
September 26 63.9°F63.9°F70°F
September 27 63.9°F63.9°F70.9°F
September 28 63.9°F63.9°F75.4°F
September 29 63.3°F63.3°F75.2°F
September 30 63.1°F63.1°F75°F
T-Street Beach water temp chart in September

Average water temperature in T-Street Beach in September over a decade

20152016201720182019
74.8°F68.9°F70.3°F71.2°F72.3°F
20202021202220232024
70.5°F69.1°F72°F69.3°F69.3°F

T-Street 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
Dana Strands Beach70°F64.6°F75.9°F
Laguna Beach69.8°F64.2°F75.9°F
Dana Point69.8°F64.2°F75.9°F
Divers Cove69.6°F63.3°F75.7°F
Crystal Cove69.6°F63°F75.6°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 T-Street 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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