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Water temperature in Anchorage (AK) in May

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Is it warm enough to swim in Anchorage in May? Average water temperature in Anchorage in May is 43°F and therefore is not suitable for comfortable swimming. The warmest sea in Anchorage in May is 53.8°F, and the coldest is 33.8°F. Average high air temperature in Anchorage in May is 57°F, and average low temperature is 39°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Anchorage

Changes water temperature in Anchorage in May 2025, 2024

To get an accurate forecast for the water temperature in Anchorage for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Anchorage, 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 138.7°F37.4°F33.8°F41.7°F
May 239.4°F37.6°F34°F41.4°F
May 340.1°F37.8°F34.2°F41.5°F
May 441°F38.5°F34.7°F41.7°F
May 541.2°F39°F35.4°F41.7°F
May 643.2°F39.4°F35.4°F43.2°F
May 742.3°F41.2°F36°F43.2°F
May 842.4°F41°F37.2°F43.2°F
May 942.4°F41.2°F36.7°F44.2°F
May 1043.2°F41°F38.1°F45.1°F
May 1143.5°F41.2°F38.1°F45.5°F
May 1243.5°F41.2°F38.5°F46.9°F
May 1343.5°F41.5°F39°F47.1°F
May 1443.7°F42.1°F39°F46.6°F
May 1544.4°F42.6°F38.7°F47.3°F
Day 2025 2024 Min Max
May 1644.4°F42.6°F38.8°F49.1°F
May 1744.4°F42.8°F39.2°F48.6°F
May 1844.4°F43.7°F39.6°F47.8°F
May 1945.1°F44.6°F39°F48.7°F
May 2045.1°F44.8°F40.1°F48.2°F
May 2145.1°F45.9°F40.1°F48.7°F
May 2245.3°F45.7°F40.3°F48.7°F
May 2345.9°F45.7°F40.8°F49.3°F
May 2447.8°F45.9°F41.4°F49.3°F
May 2548.6°F46°F42.8°F49.3°F
May 2648.6°F46.2°F43.3°F49.6°F
May 2748.7°F46.4°F43.7°F52°F
May 2849.6°F46.9°F44.1°F53.6°F
May 2949.3°F47.1°F44.2°F53.8°F
May 3049.1°F48°F44.6°F53.6°F
May 3149.1°F47.3°F45°F53.6°F
Anchorage water temp chart in May

Average water temperature in Anchorage in May over a decade

20162017201820192020
46.8°F43°F42.3°F44.8°F44.2°F
20212022202320242025
43.2°F45.9°F41.4°F43°F44.6°F

Anchorage sea state in May

Chart comparing the height of waves in Anchorage 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 Anchorage in May

Weather and climate in Anchorage in May

This data display average monthly climate indicators in Anchorage 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 temperature57°F
  • Average LOW temperature39°F
  • Average humidity
    62
  • Average rainfall days7 days
  • Average rainfall20mm/0.8''
  • Average daylight18h
  • Average sunshine9.3h
  • Average UV index4

Anchorage 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

Temperature in neighboring cities

The nearest locations with the average water temperature in May. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Whittier45.9°F41°F55.6°F
Kenai41°F35.1°F48.7°F
Seward44.8°F39.6°F52.5°F
Cook Inlet40.8°F35.2°F48.2°F
Prince William Sound45.9°F39.6°F54.5°F
Anchor Point42.6°F38.7°F48.4°F
Homer43.3°F38.8°F49.6°F
Valdez46.2°F39.9°F54°F
Cordova46.4°F40.1°F55.8°F
Kodiak43°F38.8°F48.6°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 Anchorage 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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