This data the coastal Juneau ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Juneau today is 47.5°F. Based on our historical data over a period of ten years, the warmest water in this day in Juneau was recorded in 2014 and was 48.2°F, and the coldest was recorded in 2011 at 45°F. Sea water temperature in Juneau is expected to drop to 45°F in the next 10 days. October average water temperature in Juneau is 46.4°F, the minimum temperature is 42.3°F, and the maximum is 50°F.
Throughout the year, the water temperature in Juneau does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in Juneau in winter reaches 39.9°F, in spring 41.9°F, in summer the average temperature rises to 54.1°F, and in autumn it is 46.8°F.
October 14, 2025 |
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today temp |
47.5°F |
October 13, 2025 |
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yesterday temp |
47.8°F |
The ocean salinity in Juneau is 30.02‰, and the average salinity of the World Ocean is 35‰.
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Juneau. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Juneau. Data in table shown for October 15, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
0' 5" | 0' 4" | 0' 4" | 0' 4" |
0.13 m | 0.1 m | 0.1 m | 0.11 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
0' 4" | 0' 7" | 1' 0" | 1' 11" |
0.11 m | 0.17 m | 0.31 m | 0.58 m |
Data in a table show Juneau temperature today (October 15, 2025). For more information and forecast for a few days, go to the weather forecast Juneau.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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33.6°F | 33.3°F | 33.1°F | 33.4°F |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
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32.4°F | 36.1°F | 37°F | 37°F |
You may also be interested in other sections of our site for Juneau: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Juneau. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Juneau on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 39.7°F | 37.6°F | 42.1°F | cold |
Ocean water temperature in Juneau in January | ||||
February | 38.8°F | 36°F | 41.9°F | cold |
Ocean water temperature in Juneau in February | ||||
March | 38.8°F | 36°F | 42.3°F | cold |
Ocean water temperature in Juneau in March | ||||
April | 40.8°F | 37.2°F | 45.3°F | cold |
Ocean water temperature in Juneau in April | ||||
May | 45.9°F | 39.6°F | 52.9°F | cold |
Ocean water temperature in Juneau in May | ||||
June | 51.6°F | 46.4°F | 57.7°F | cold |
Ocean water temperature in Juneau in June | ||||
July | 55.4°F | 48.7°F | 61.7°F | cold |
Ocean water temperature in Juneau in July | ||||
August | 55.6°F | 49.5°F | 61°F | cold |
Ocean water temperature in Juneau in August | ||||
September | 50.9°F | 47.3°F | 56.8°F | cold |
Ocean water temperature in Juneau in September | ||||
October | 46.4°F | 42.3°F | 50°F | cold |
Ocean water temperature in Juneau in October | ||||
November | 42.8°F | 40.1°F | 45.9°F | cold |
Ocean water temperature in Juneau in November | ||||
December | 41.4°F | 38.5°F | 43.9°F | cold |
Ocean water temperature in Juneau in December |