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Water temperature in Anchorage (AK) in August

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Is it warm enough to swim in Anchorage in August? Average water temperature in Anchorage in August is 58.1°F and therefore is not suitable for comfortable swimming. The warmest sea in Anchorage in August is 64.6°F, and the coldest is 53.1°F. Average high air temperature in Anchorage in August is 64°F, and average low temperature is 49°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 August 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 August.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 159.2°F57.9°F53.2°F61.5°F
August 258.6°F57.6°F53.1°F60.8°F
August 360.4°F57.7°F54.9°F62.1°F
August 460.8°F59.4°F55.2°F62.8°F
August 561.2°F58.5°F54.7°F63°F
August 661°F58.6°F54.9°F63°F
August 761°F58.6°F55.2°F63.3°F
August 861°F58.8°F55.9°F64°F
August 960.8°F58.8°F55.8°F63.7°F
August 1061.2°F57.2°F55.6°F63.7°F
August 1159.9°F57.6°F55.9°F63.7°F
August 1259.4°F56.8°F55.2°F64.6°F
August 1359.4°F56.1°F55.2°F63.7°F
August 1459.2°F56.3°F54.9°F63.1°F
August 1561°F56.5°F54.9°F62.6°F
Day 2025 2024 Min Max
August 1659.9°F56.5°F54.9°F62.1°F
August 1759.4°F55.9°F55.4°F64°F
August 1859.7°F55.8°F55.8°F63.3°F
August 1959.5°F56.1°F55.6°F62.1°F
August 2059.9°F56.3°F55.6°F63.1°F
August 2159.5°F56.1°F55.4°F61°F
August 2259.2°F55.6°F55.4°F61.2°F
August 2359°F55.2°F55.2°F61°F
August 2460.1°F55°F55°F60.8°F
August 2559.7°F55.2°F55.2°F60.6°F
August 2657.6°F56.3°F55.4°F60.1°F
August 2757.4°F55.9°F55.4°F60.1°F
August 2857.4°F55.9°F55.2°F60.1°F
August 2958.6°F55°F55°F60.1°F
August 3058.5°F55.6°F55.4°F59.5°F
August 3158.1°F55.6°F55.4°F59.2°F
Anchorage water temp chart in August

Average water temperature in Anchorage in August over a decade

20162017201820192020
59°F58.6°F58.5°F62.1°F60.4°F
20212022202320242025
59.2°F57.9°F58.6°F56.7°F60.4°F

Anchorage sea state in August

Chart comparing the height of waves in Anchorage in August 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 August

Weather and climate in Anchorage in August

This data display average monthly climate indicators in Anchorage in August 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 temperature64°F
  • Average LOW temperature49°F
  • Average humidity
    75
  • Average rainfall days14 days
  • Average rainfall84mm/3.3''
  • Average daylight16h
  • Average sunshine6.6h
  • 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 August?

Want to know where the water temperature in August 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 August. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Whittier54.9°F51.1°F60.6°F
Kenai55.4°F51.6°F61.3°F
Seward55.9°F52°F61.3°F
Cook Inlet54.5°F50.4°F59.2°F
Prince William Sound57°F52.2°F64.2°F
Anchor Point51.4°F47.1°F55.2°F
Homer52.5°F48.2°F59.5°F
Valdez56.5°F53.1°F61.2°F
Cordova56.5°F53.1°F61.2°F
Kodiak52°F48.6°F57.6°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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