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Water temperature in Mendocino (CA) in October

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Is it warm enough to swim in Mendocino in October? Average water temperature in Mendocino in October is 54.7°F and therefore is not suitable for comfortable swimming. The warmest sea in Mendocino in October is 61.5°F, and the coldest is 48.9°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 October 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 October.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
October 155.8°F53.8°F52.7°F58.6°F
October 256.8°F53.2°F52.2°F59.4°F
October 357.4°F52.9°F51.4°F59.9°F
October 456.7°F53.8°F51.4°F59.5°F
October 555.4°F52.9°F51.8°F58.6°F
October 657°F52.7°F51.6°F58.3°F
October 757°F53.6°F51.4°F58.1°F
October 855.6°F54.1°F51.8°F57.7°F
October 956.5°F54.1°F50.9°F58.6°F
October 1057.6°F52.5°F50.4°F58.8°F
October 1158.3°F52.2°F50.4°F59.4°F
October 1256.8°F54°F49.6°F59.7°F
October 1356.8°F54.3°F48.9°F60.1°F
October 1456.7°F53.6°F50°F59.7°F
October 1557.2°F53.2°F49.3°F59.5°F
Day 2025 2024 Min Max
October 1655.9°F55.2°F50.7°F60.1°F
October 1755.8°F53.8°F50.9°F60.6°F
October 1855.2°F52.3°F51.3°F60.4°F
October 19 53.1°F51.1°F60.3°F
October 20 53.2°F51.1°F60.6°F
October 21 52.9°F51.4°F61.2°F
October 22 53.2°F51.4°F61°F
October 23 52°F51.3°F61.3°F
October 24 50.7°F50.7°F61.5°F
October 25 51.3°F50.5°F61°F
October 26 51.1°F50.5°F60.8°F
October 27 52.3°F51.1°F60.1°F
October 28 52.9°F50.7°F60.3°F
October 29 51.8°F50.9°F60.6°F
October 30 52.3°F52°F60.3°F
October 31 51.8°F51.6°F60.3°F
Mendocino water temp chart in October

Average water temperature in Mendocino in October over a decade

20152016201720182019
59°F55.8°F52.5°F55.9°F54.9°F
20202021202220232024
55.2°F53.4°F52.9°F55.2°F52.9°F

Mendocino sea state in October

Chart comparing the height of waves in Mendocino in October 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 October

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 October?

Want to know where the water temperature in October 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 October

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

AvrMinMax
San Diego66.9°F62.1°F73.8°F
Santa Monica66.4°F60.3°F73.2°F
La Jolla Cove67.3°F63°F73.6°F
Lake Tahoe58.6°F53.2°F64.2°F
Los Angeles66.4°F61°F73.8°F
Glass Beach54.9°F49.1°F61.5°F
Gualala54.7°F48.4°F61.7°F
Shelter Cove54.9°F49.8°F60.8°F
Lakeport67.8°F60.8°F74.7°F
Clear Lake67.8°F60.8°F74.7°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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