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Water temperature in San Onofre Beach (CA) in January

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Is it warm enough to swim in San Onofre Beach in January? Average water temperature in San Onofre Beach in January is 59°F and therefore is not suitable for comfortable swimming. The warmest sea in San Onofre Beach in January is 62.4°F, and the coldest is 55.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in San Onofre Beach

Changes water temperature in San Onofre Beach in January 2025, 2024

To get an accurate forecast for the water temperature in San Onofre 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 San Onofre Beach, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of January.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
January 157.7°F61.7°F57.4°F62.2°F
January 257.2°F61.5°F57.2°F62.2°F
January 357.2°F61.3°F57.2°F62.2°F
January 457.6°F61.2°F57.4°F62.2°F
January 557.6°F61°F57°F62.2°F
January 658.5°F61.2°F56.7°F62.4°F
January 758.5°F60.3°F56.5°F62.1°F
January 856.8°F59°F56.5°F62.1°F
January 956.7°F57.9°F56.3°F61.9°F
January 1057.4°F57.9°F55.9°F61.7°F
January 1157.2°F58.3°F56.3°F61.7°F
January 1257.6°F58.1°F56.3°F61.9°F
January 1357.2°F58.1°F56.3°F62.1°F
January 1456.8°F58.3°F55.9°F62.1°F
January 1557°F58.8°F55.9°F62.1°F
Day 2025 2024 Min Max
January 1656.8°F58.8°F56.1°F62.1°F
January 1757°F58.6°F56.1°F62.1°F
January 1856.8°F58.5°F56.1°F62.2°F
January 1956.3°F58.5°F55.9°F62.2°F
January 2056.7°F58.5°F55.9°F62.1°F
January 2156.1°F58.8°F56.1°F62.1°F
January 2256.5°F59.2°F56.1°F62.1°F
January 2356.7°F59.7°F56.3°F62.1°F
January 2456.1°F59.7°F56.1°F61.9°F
January 2555.8°F59.5°F55.8°F61.9°F
January 2656.5°F59.9°F56.5°F61.9°F
January 2756.7°F60.1°F56.7°F61.9°F
January 2856.7°F60.3°F56.7°F61.9°F
January 2956.8°F60.3°F56.5°F61.9°F
January 3057.2°F60.4°F56.3°F61.9°F
January 3157.2°F60.4°F56.5°F61.9°F
San Onofre Beach water temp chart in January

Average water temperature in San Onofre Beach in January over a decade

20162017201820192020
60.6°F59.2°F61.2°F60.4°F59.7°F
20212022202320242025
58.5°F58.8°F58.1°F59.5°F57°F

San Onofre Beach sea state in January

Chart comparing the height of waves in San Onofre Beach in January 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 San Onofre Beach in January

San Onofre 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 January?

Want to know where the water temperature in January 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 January

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

AvrMinMax
Santa Monica58.6°F54.7°F62.2°F
La Jolla Cove59°F55.4°F62.1°F
Lake Tahoe43°F40.1°F45.7°F
Los Angeles58.5°F54.5°F62.4°F
Trestles Beach59°F55.8°F62.4°F
T-Street Beach59°F55.9°F62.4°F
Baby Beach59°F55.9°F62.4°F
Capistrano Beach59°F55.9°F62.4°F
Doheny Beach59°F55.9°F62.4°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 San Onofre 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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