World sea water temperatures

Water temperature in Del Mar (CA) in September

Is it warm enough to swim in Del Mar in September? Average water temperature in Del Mar in September is 70.3°F and therefore suitable for comfortable swimming. The warmest sea in Del Mar in September is 78.1°F, and the coldest is 62.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Del Mar

Changes water temperature in Del Mar in September 2025, 2024

To get an accurate forecast for the water temperature in Del Mar for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Del Mar, 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 174.8°F72.5°F65.5°F76.3°F
September 273.4°F72.5°F66°F77.2°F
September 373.8°F73.8°F66.4°F78.1°F
September 473.9°F73.8°F65.3°F77.7°F
September 574.1°F73.8°F64.2°F77.5°F
September 673.2°F73.8°F64°F77.7°F
September 773.6°F75.4°F65.3°F78.1°F
September 873.9°F75.9°F66.2°F77.2°F
September 972.7°F74.8°F66.4°F76.5°F
September 1071.1°F73°F65.1°F75.9°F
September 1170°F72°F64.9°F76.1°F
September 1269.4°F72°F65.1°F76.3°F
September 1370°F72.9°F64.8°F76.1°F
September 1470.2°F73.2°F64.8°F75.9°F
September 1570.9°F73.2°F64°F75.9°F
Day 2025 2024 Min Max
September 1671.4°F72.3°F64.4°F75.2°F
September 1771.2°F72°F64.4°F75°F
September 1871.1°F71.1°F64.6°F75°F
September 1971.6°F69.6°F64.8°F75.2°F
September 2070.5°F68.9°F64.8°F75.7°F
September 2167.8°F67.8°F64.8°F75.6°F
September 2265.5°F66.6°F64.8°F75°F
September 2365.1°F64.6°F64.6°F75°F
September 2466.6°F63°F63°F75.2°F
September 2567.1°F62.6°F62.6°F75.2°F
September 2666.4°F62.2°F62.2°F75.4°F
September 2766.9°F62.8°F62.8°F75.6°F
September 2868.2°F62.4°F62.4°F75.4°F
September 2968.5°F62.1°F62.1°F74.5°F
September 3068.4°F62.6°F62.6°F73.9°F
Del Mar water temp chart in September

Average water temperature in Del Mar in September over a decade

20162017201820192020
69.3°F70.7°F71.8°F73.9°F70.7°F
20212022202320242025
67.5°F72.3°F69.4°F69.8°F

Del Mar sea state in September

Chart comparing the height of waves in Del Mar 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 Del Mar in September

Del Mar 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
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
Black's Beach70.2°F62.6°F77.2°F
Scripps Pier70.2°F62.6°F77.2°F
Children's Pool70.2°F62.6°F77.2°F
Kellogg Park70.2°F62.6°F77.2°F
La Jolla70°F63.7°F76.1°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 Del Mar 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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