World sea water temperatures

Water temperature in Oceanside (CA) in May

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Is it warm enough to swim in Oceanside in May? Average water temperature in Oceanside in May is 63.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Oceanside in May is 69.1°F, and the coldest is 57.7°F. Average high air temperature in Oceanside in May is 69°F, and average low temperature is 60°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Oceanside

Changes water temperature in Oceanside in May 2025, 2024

To get an accurate forecast for the water temperature in Oceanside for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Oceanside, 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 162.8°F62.1°F57.7°F66°F
May 262.8°F62.6°F58.6°F67.1°F
May 362.8°F62.6°F59.4°F67.1°F
May 462.4°F62.6°F60.1°F67.8°F
May 562.8°F63°F59.9°F68.5°F
May 662.4°F63.1°F60.1°F68.4°F
May 762.4°F63.5°F60.1°F69.1°F
May 862.8°F63.5°F60.4°F68.9°F
May 963.3°F63.5°F60.8°F68°F
May 1064°F63.3°F60.4°F67.8°F
May 1164.9°F63.5°F59.9°F67.1°F
May 1265.3°F64°F59.4°F67.1°F
May 1364.6°F64.2°F58.8°F65.7°F
May 1464°F64.6°F59°F65.7°F
May 1564.2°F64.6°F59°F65.5°F
Day 2025 2024 Min Max
May 1664.2°F64.4°F59°F66°F
May 1763.7°F64.4°F59.2°F66.7°F
May 1864°F64.9°F59.4°F67.5°F
May 1964.2°F64.8°F59.5°F68.5°F
May 2065.5°F64.8°F59.7°F68.5°F
May 2166.9°F64.6°F59.9°F67.6°F
May 2267.6°F64.9°F60.3°F67.6°F
May 2367.5°F64.4°F60.6°F67.5°F
May 2467.5°F64.2°F61°F67.5°F
May 2567.1°F64°F61.2°F67.1°F
May 2667.5°F64.4°F61.5°F67.5°F
May 2767.5°F63.7°F61.2°F67.5°F
May 2867.5°F63.9°F61.5°F67.5°F
May 2966.6°F63.3°F61.5°F67.1°F
May 3066.7°F63.5°F61.9°F67.5°F
May 3167.8°F64.2°F62.6°F68.2°F
Oceanside water temp chart in May

Average water temperature in Oceanside in May over a decade

20162017201820192020
65.3°F63.5°F62.8°F63.1°F66.6°F
20212022202320242025
64.4°F63.3°F63.1°F63.9°F64.9°F

Oceanside sea state in May

Chart comparing the height of waves in Oceanside 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 Oceanside in May

Weather and climate in Oceanside in May

This data display average monthly climate indicators in Oceanside in May based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature69°F
  • Average LOW temperature60°F
  • Average rainfall5mm/0.2''

Oceanside 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
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
Encinitas64.2°F58.1°F70.7°F
Moonlight Beach64.2°F58.1°F70.5°F
Cardiff64.2°F58.1°F70.5°F
San Elijo State Beach64.2°F58.1°F70.5°F
Swami's Beach64.2°F58.1°F70.5°F

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Oceanside has a "Blue Flag" [1] award

Sandy beach

This place is suitable for families with children

Current rating: 4,5 (4 votes cast)

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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 Oceanside 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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