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Water temperature in Santa Catalina Island (CA) in May

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Is it warm enough to swim in Santa Catalina Island in May? Average water temperature in Santa Catalina Island in May is 62.6°F and therefore is not suitable for comfortable swimming. The warmest sea in Santa Catalina Island in May is 68°F, and the coldest is 58.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Santa Catalina Island

Changes water temperature in Santa Catalina Island in May 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
May 160.8°F61.7°F59.2°F64.9°F
May 261.2°F61.3°F59.9°F64.9°F
May 361.2°F61.3°F59.7°F64.6°F
May 460.8°F61°F59.7°F64.9°F
May 561°F61.5°F59.5°F64.9°F
May 661.7°F60.6°F59.5°F65.3°F
May 762.4°F61.2°F60.3°F66.4°F
May 862.1°F61.7°F60.8°F65.5°F
May 962.4°F62.2°F60.8°F66°F
May 1062.4°F61.7°F60.3°F65.7°F
May 1163.1°F61.9°F58.1°F65.7°F
May 1263.1°F62.1°F58.3°F65.8°F
May 1363.1°F61.9°F59.7°F65.8°F
May 1462.4°F61.9°F59.4°F65.7°F
May 1563°F61.7°F59.9°F65.8°F
Day 2025 2024 Min Max
May 1663.9°F61.5°F59.5°F65.8°F
May 1763.9°F62.1°F59.5°F66°F
May 1862.8°F62.1°F59.5°F65.8°F
May 1962.8°F62.1°F59.4°F65.7°F
May 2063.5°F62.1°F59.5°F65.7°F
May 2164°F61.5°F59.7°F65.8°F
May 2264.2°F62.8°F60.1°F66°F
May 2364.4°F62.8°F59°F65.8°F
May 2463.5°F63°F58.8°F65.8°F
May 2563.5°F62.6°F59.2°F65.7°F
May 2664°F62.4°F60.4°F66.2°F
May 2763.9°F61.9°F59.4°F67.8°F
May 2863.9°F61.9°F58.6°F67.8°F
May 2965.5°F62.4°F59.9°F67.5°F
May 3065.8°F62.2°F59.9°F68°F
May 3165.1°F62.2°F60.8°F67.1°F
Santa Catalina Island water temp chart in May

Average water temperature in Santa Catalina Island in May over a decade

20162017201820192020
63.9°F62.8°F62.2°F61.5°F65.8°F
20212022202320242025
63°F62.2°F61.5°F61.9°F63.1°F

Santa Catalina Island sea state in May

Chart comparing the height of waves in Santa Catalina Island in May 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 Santa Catalina Island in May

Santa Catalina Island 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 May?

Want to know where the water temperature in May 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 May

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

AvrMinMax
San Diego63°F57.4°F68°F
Santa Monica61.3°F55.9°F68.4°F
La Jolla Cove64°F58.1°F69.6°F
Lake Tahoe50.7°F43.9°F59°F
Los Angeles60.8°F56.5°F65.1°F
Empire Landing62.6°F58.1°F67.8°F
Moonstone Beach62.6°F58.3°F67.6°F
Two Harbors62.4°F57.9°F67.5°F
Arrow Point62.4°F57.9°F67.5°F
White Point Beach62.1°F55°F66.9°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 Santa Catalina Island 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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