Sea Temperature in Unalaska in December

Complete information on the sea temperature range in the Pacific Ocean in Unalaska in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Unalaska. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Unalaska in December

37°F

MINIMUN

41°F

AVERAGE

45°F

MAXIMUM

Historical Data of Water Temperature in December in Unalaska

Water Temperature Chart for Pacific Ocean in Unalaska in December

Sea Temperature Table in Unalaska in December Over the Past Years

Day	2024	2023	2022	Average
Dec 1	41°C	43°C	41°C	41°C
Dec 2	41°C	43°C	41°C	41°C
Dec 3	41°C	43°C	41°C	41°C
Dec 4	41°C	43°C	41°C	41°C
Dec 5	41°C	41°C	41°C	41°C
Dec 6	41°C	41°C	41°C	41°C
Dec 7	41°C	43°C	41°C	42°C
Dec 8	41°C	41°C	43°C	42°C
Dec 9	41°C	41°C	41°C	41°C
Dec 10	41°C	41°C	41°C	41°C
Dec 11	41°C	41°C	41°C	41°C
Dec 12	41°C	41°C	41°C	40°C
Dec 13	41°C	41°C	41°C	41°C
Dec 14	41°C	41°C	41°C	41°C
Dec 15	41°C	41°C	41°C	41°C
Dec 16	41°C	41°C	41°C	41°C
Dec 17	41°C	41°C	39°C	40°C
Dec 18	39°C	41°C	41°C	40°C
Dec 19	39°C	41°C	41°C	40°C
Dec 20	41°C	41°C	41°C	41°C
Dec 21	41°C	41°C	41°C	41°C
Dec 22	41°C	41°C	41°C	41°C
Dec 23	41°C	41°C	41°C	41°C
Dec 24	41°C	41°C	41°C	41°C
Dec 25	41°C	41°C	41°C	41°C
Dec 26	41°C	39°C	41°C	41°C
Dec 27	41°C	39°C	41°C	41°C
Dec 28	41°C	39°C	41°C	41°C
Dec 29	41°C	39°C	41°C	41°C
Dec 30	41°C	39°C	41°C	41°C

Unalaska Climate and Swimming Opportunities in December

30°F

Average Day Air Temperature

21°F

Average Night Air Temperature

3 in

Precipitation Amount per Month

14 days

Number of Rainy Days

6 hrs

Daylight
per Day

2 hrs

Sunshine
per Day

9 mph

Average Wind Speed

78%

Average
humidity

Unalaska lies within the Alaska in United States. The average daytime temperature in Unalaska in December is 30°F (-1°C), while the nighttime average is 20°F (-6°C). There are typically 14 rainy days during the month, with a total precipitation of 3.2 inches (83 mm). The daylight duration in December in Unalaska is 6 hours, with an average of 2 hours of sunshine per day. The average wind speed in December is 9 mph (15 km/h), and the humidity level is around 78%.

The water temperature in Unalaska in December ranges from 39°F to 41°F (4°C to 5°C). At the beginning of the month, the average temperature is around 41°F (5°C), shifting to 41°F (5°C) by mid-December and reaching 41°F (5°C) in the last ten days. Overall, the average sea temperature in Unalaska for December is 41°F (5°C). Swimming in such conditions is extremely dangerous due to the risk of hypothermia and cold shock. Only experienced winter swimmers with proper preparation should attempt it.

Sea Temperature in December in Nearby Cities

Frequently Asked Questions About Water Temperatures in December in Unalaska

What is the sea temperature in Unalaska in December?

The water temperature in the Pacific Ocean in Unalaska in December ranges from 39°F to 41°F (4°C to 5°C).

Is it possible to swim in the Pacific Ocean in Unalaska in December?

The average sea temperature in Unalaska in December is 41°F (5°C), and the air temperature is 30°F (-1°C), so swimming in such conditions is extremely dangerous due to the risk of hypothermia and cold shock. Only experienced winter swimmers with proper preparation should attempt it.