World sea water temperatures

Water temperature in Alcatraz (CA) in May

Is it warm enough to swim in Alcatraz in May? Average water temperature in Alcatraz in May is 56.1°F and therefore is not suitable for comfortable swimming. The warmest sea in Alcatraz in May is 63.5°F, and the coldest is 50.5°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Alcatraz

Changes water temperature in Alcatraz in May 2025, 2024

To get an accurate forecast for the water temperature in Alcatraz for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Alcatraz, 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 157.2°F60.3°F51.3°F61°F
May 259.4°F59.7°F51.1°F61°F
May 360.1°F60.6°F51.4°F61.2°F
May 459.2°F59°F51.4°F60.1°F
May 558.8°F59.2°F51.1°F60.6°F
May 659.4°F57.2°F51.1°F61.2°F
May 759.4°F57.9°F51.1°F60.8°F
May 859.2°F57.7°F50.9°F61°F
May 958.6°F58.5°F50.9°F60.6°F
May 1058.5°F57.6°F51.3°F59.9°F
May 1160.8°F59.4°F51.3°F60.8°F
May 1260.8°F58.1°F51.4°F60.8°F
May 1360.3°F58.5°F51.3°F60.6°F
May 1458.8°F57.7°F50.7°F60.1°F
May 1559.5°F56.7°F50.5°F61.5°F
Day 2025 2024 Min Max
May 1661°F55.9°F50.5°F61°F
May 1761.2°F54.9°F50.5°F61.2°F
May 1861°F55.2°F50.9°F61.3°F
May 1960.8°F56.5°F51.4°F62.2°F
May 2061.5°F57.2°F51.3°F62.6°F
May 2161.2°F58.1°F50.7°F62.4°F
May 2261.7°F58.8°F50.5°F61.7°F
May 2361.5°F58.8°F50.7°F62.1°F
May 2461.3°F58.3°F50.9°F61.7°F
May 2560.3°F58.5°F50.9°F63.3°F
May 2660.3°F57.7°F50.9°F62.8°F
May 2759.4°F57.9°F50.7°F63.3°F
May 2860.4°F57.4°F51.1°F62.8°F
May 2959.5°F57.9°F51.3°F63.5°F
May 3060.4°F58.3°F51.6°F62.6°F
May 3160.8°F59.2°F51.8°F63.1°F
Alcatraz water temp chart in May

Average water temperature in Alcatraz in May over a decade

20162017201820192020
58.1°F55.4°F59°F59.9°F61.3°F
20212022202320242025
59.4°F59.5°F57.6°F57.9°F60.1°F

Alcatraz sea state in May

Chart comparing the height of waves in Alcatraz 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 Alcatraz in May

Alcatraz 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
Angel Island56.1°F50.5°F63.5°F
Marshall's Beach55.6°F50.4°F61.7°F
Paradise Beach Park56.3°F50.4°F63.1°F
Albany56.5°F50.5°F64.2°F
North Beach56.7°F50.5°F66.2°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 Alcatraz 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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