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Water temperature in Alamitos Beach (CA) in September

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Is it warm enough to swim in Alamitos Beach in September? Average water temperature in Alamitos Beach in September is 67.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Alamitos Beach in September is 75°F, and the coldest is 60.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Alamitos Beach

Changes water temperature in Alamitos Beach in September 2025, 2024

To get an accurate forecast for the water temperature in Alamitos 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 Alamitos 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 170.3°F69.1°F62.8°F72.5°F
September 270.7°F69.6°F63.5°F72.7°F
September 369.1°F68.9°F63.5°F73°F
September 467.8°F69.4°F63.5°F73°F
September 567.5°F68.5°F61.3°F73°F
September 6 68.2°F62.4°F72.9°F
September 7 69.1°F64.2°F72.7°F
September 8 68.9°F64.6°F72.3°F
September 9 69.1°F64.8°F72.7°F
September 10 67.3°F64.4°F72.3°F
September 11 65.7°F64.6°F73.8°F
September 12 66.4°F62.8°F75°F
September 13 67.3°F60.1°F74.5°F
September 14 67.8°F60.4°F74.1°F
September 15 68.4°F60.3°F74.5°F
Day 2025 2024 Min Max
September 16 68.2°F60.8°F74.1°F
September 17 67.3°F63.1°F73.9°F
September 18 66.6°F63.9°F73.6°F
September 19 66.9°F63.5°F73.2°F
September 20 65.8°F64°F73.2°F
September 21 65.7°F64.8°F72.7°F
September 22 64.8°F64.4°F72.5°F
September 23 64.2°F64°F72.5°F
September 24 63.9°F63.3°F72.7°F
September 25 63.3°F63.3°F72.9°F
September 26 62.6°F62.6°F73°F
September 27 61.2°F61.2°F72.9°F
September 28 62.1°F62.1°F72.7°F
September 29 62.6°F62.6°F72.3°F
September 30 62.6°F62.6°F72.3°F
Alamitos Beach water temp chart in September

Average water temperature in Alamitos Beach in September over a decade

20152016201720182019
72.9°F68°F68.9°F68.5°F70.7°F
20202021202220232024
66.2°F63.7°F70.5°F66.9°F66.4°F

Alamitos Beach sea state in September

Chart comparing the height of waves in Alamitos 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 Alamitos Beach in September

Alamitos 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
Bluff Park68°F60.4°F75.2°F
Huntington Beach69.1°F63.3°F75.2°F
Rancho Palos Verdes68.2°F62.8°F73.6°F
Palos Verdes Estates68.4°F62.8°F74.1°F
Torrance68.4°F62.8°F74.1°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 Alamitos 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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