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Water temperature in San Onofre Beach (CA) in March

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Is it warm enough to swim in San Onofre Beach in March? Average water temperature in San Onofre Beach in March is 59°F and therefore is not suitable for comfortable swimming. The warmest sea in San Onofre Beach in March is 66.2°F, and the coldest is 54.3°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 March 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 March.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
March 158.6°F60.8°F56.1°F62.6°F
March 259°F60.6°F55.4°F62.8°F
March 356.8°F60.6°F55.6°F62.8°F
March 454.9°F60.6°F54.9°F62.8°F
March 555.2°F60.4°F55.2°F62.6°F
March 654.9°F60.3°F54.9°F62.6°F
March 754.7°F60.3°F54.7°F62.2°F
March 854.7°F60.3°F54.7°F62.1°F
March 955.6°F60.3°F55.6°F62.2°F
March 1056.3°F60.3°F55.8°F62.4°F
March 1156.1°F59.7°F56.1°F62.6°F
March 1256.5°F59.9°F56.5°F62.4°F
March 1357°F60.1°F57°F63°F
March 1456.7°F59.7°F56.7°F63.1°F
March 1557.2°F59.7°F56.8°F63.3°F
Day 2025 2024 Min Max
March 1657.9°F59.9°F57°F63.5°F
March 1758.3°F59.9°F56.7°F63.9°F
March 1857.4°F60.1°F55.9°F63.9°F
March 1956.3°F60.4°F55°F63.9°F
March 2055.8°F61°F54.3°F64.2°F
March 2156.5°F61.3°F55.2°F64.4°F
March 2256.8°F61.9°F55.8°F64.4°F
March 2357.9°F61.3°F56.3°F64°F
March 2458.3°F58.6°F56.5°F64°F
March 2558.5°F56.8°F56.3°F64.6°F
March 2658.6°F57°F56.7°F65.3°F
March 2757.9°F57.7°F56.8°F65.7°F
March 2858.3°F58.1°F56.5°F65.7°F
March 2957.6°F57.9°F55.9°F65.8°F
March 3058.3°F57.7°F55.9°F66.2°F
March 3158.3°F57.6°F55.9°F65.7°F
San Onofre Beach water temp chart in March

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

20162017201820192020
61.7°F60.4°F58.6°F58.8°F60.6°F
20212022202320242025
57.7°F59.4°F57°F59.7°F57°F

San Onofre Beach sea state in March

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

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 March?

Want to know where the water temperature in March 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 March

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

AvrMinMax
Santa Monica57.9°F53.6°F63.5°F
La Jolla Cove59.9°F55.6°F66.6°F
Lake Tahoe42.3°F39.6°F47.7°F
Los Angeles58.1°F54.7°F64°F
Trestles Beach59°F54.3°F66.2°F
T-Street Beach59.2°F54.5°F66°F
Baby Beach59.2°F54.5°F65.8°F
Capistrano Beach59.2°F54.5°F65.8°F
Doheny Beach59.2°F54.5°F65.8°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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