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Water temperature in Mendocino (CA) in August

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Is it warm enough to swim in Mendocino in August? Average water temperature in Mendocino in August is 54.5°F and therefore is not suitable for comfortable swimming. The warmest sea in Mendocino in August is 61.5°F, and the coldest is 49.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Mendocino

Changes water temperature in Mendocino in August 2025, 2024

To get an accurate forecast for the water temperature in Mendocino for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Mendocino, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of August.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 153.2°F52.3°F51.4°F57.2°F
August 250.9°F53.4°F50.2°F57.7°F
August 351.6°F54.1°F50.9°F58.6°F
August 451.1°F51.6°F51.1°F58.6°F
August 552.5°F49.8°F49.8°F59.2°F
August 651.6°F50.9°F50.9°F59.5°F
August 751.1°F52.2°F50.9°F59.2°F
August 852°F52.2°F51.1°F59.2°F
August 953.8°F50°F50°F58.8°F
August 1052.3°F50.9°F50.9°F59.2°F
August 1152.2°F51.4°F51.4°F59.2°F
August 1251.4°F51.1°F51.1°F59.5°F
August 1353.2°F51.8°F51.8°F60.1°F
August 1453.2°F52.9°F51.6°F60.8°F
August 1554.7°F53.8°F51.8°F60.3°F
Day 2025 2024 Min Max
August 1655.2°F53.8°F52.2°F59.7°F
August 1755.4°F53.6°F52°F58.6°F
August 1855.6°F55°F52.5°F58.3°F
August 1954.1°F57.4°F50.9°F58.3°F
August 2054.5°F58.3°F49.1°F58.5°F
August 2153.1°F58.5°F50°F58.6°F
August 2253.8°F57.7°F51.3°F58.6°F
August 2351.4°F56.8°F50.7°F58.6°F
August 2452.7°F57.7°F50.4°F58.8°F
August 2553.2°F58.5°F51.8°F58.6°F
August 2653.2°F58.1°F52.9°F59.4°F
August 2754.7°F57.4°F52°F59.7°F
August 2856.1°F55.8°F52.2°F59.9°F
August 2957.9°F55.8°F52.5°F60.1°F
August 3057.4°F55.8°F52.7°F61°F
August 3159.2°F54°F52.2°F61.5°F
Mendocino water temp chart in August

Average water temperature in Mendocino in August over a decade

20162017201820192020
54.5°F55.8°F52.9°F54°F53.6°F
20212022202320242025
53.6°F54.1°F54.7°F54.3°F52°F

Mendocino sea state in August

Chart comparing the height of waves in Mendocino in August 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 Mendocino in August

Mendocino 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 August?

Want to know where the water temperature in August 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 August

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

AvrMinMax
San Diego69.8°F62.6°F76.6°F
Santa Monica68.4°F60.8°F74.7°F
La Jolla Cove70.9°F63.5°F77.7°F
Lake Tahoe68°F63.9°F72°F
Los Angeles67.8°F62.2°F72.9°F
Glass Beach54.5°F48.9°F61.9°F
Gualala54.1°F48.9°F60.3°F
Shelter Cove55°F49.5°F60.8°F
Lakeport77.7°F71.1°F81.9°F
Clear Lake77.7°F71.1°F81.9°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 Mendocino 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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