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Sea Temperature in Unalaska in September

Complete information on the sea temperature range in the Pacific Ocean in Unalaska in September. Historical daily data. Climate details for September. 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 September

6°C

MINIMUN

9°C

AVERAGE

12°C

MAXIMUM

Historical Data of Water Temperature in September in Unalaska

Water Temperature Chart for Pacific Ocean in Unalaska in September

Sea Temperature Table in Unalaska in September Over the Past Years

Day202420232022Average
Sep 111°C9°C10°C9.5°C
Sep 210°C9°C9°C8.8°C
Sep 311°C9°C9°C9.3°C
Sep 411°C9°C9°C9.3°C
Sep 511°C9°C9°C9.0°C
Sep 611°C9°C9°C9.3°C
Sep 710°C9°C9°C9.0°C
Sep 811°C8°C9°C9.0°C
Sep 911°C8°C10°C9.3°C
Sep 1010°C9°C10°C9.3°C
Sep 1110°C9°C10°C9.0°C
Sep 1211°C9°C10°C9.5°C
Sep 1311°C9°C10°C9.5°C
Sep 1410°C9°C10°C9.3°C
Sep 1510°C9°C9°C8.8°C
Sep 1611°C9°C9°C9.3°C
Sep 1710°C9°C9°C8.8°C
Sep 1810°C9°C8°C8.5°C
Sep 1910°C9°C8°C8.5°C
Sep 2010°C9°C9°C8.8°C
Sep 2110°C9°C9°C8.8°C
Sep 2210°C8°C9°C8.5°C
Sep 238°C9°C9°C8.3°C
Sep 249°C8°C9°C8.3°C
Sep 258°C8°C9°C8.0°C
Sep 269°C8°C9°C8.3°C
Sep 278°C8°C8°C7.8°C
Sep 288°C8°C8°C7.8°C
Sep 298°C8°C8°C7.5°C
Alaska, United StatesAlaska, United StatesAlaska, United States

Unalaska Climate and Swimming Opportunities in September

12°C

Average Day Air Temperature

5°C

Average Night Air Temperature

98 mm

Precipitation Amount per Month

17 days

Number of Rainy Days

13 hrs

Daylight
per Day

5 hrs

Sunshine
per Day

13 km/h

Average Wind Speed

81%

Average
humidity

Unalaska lies within the Alaska in United States. The average daytime temperature in Unalaska in September is 54°F (12°C), while the nighttime average is 41°F (5°C). There are typically 17 rainy days during the month, with a total precipitation of 3.9 inches (98 mm). The daylight duration in September in Unalaska is 13 hours, with an average of 5 hours of sunshine per day. The average wind speed in September is 8 mph (13 km/h), and the humidity level is around 81%.

The water temperature in Unalaska in September ranges from 45°F to 48°F (7°C to 9°C). At the beginning of the month, the average temperature is around 48°F (9°C), shifting to 48°F (9°C) by mid-September and reaching 46°F (8°C) in the last ten days. Overall, the average sea temperature in Unalaska for September is 48°F (9°C). The water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.

Sea Temperature in September in Nearby Cities

Frequently Asked Questions About Water Temperatures in September in Unalaska

What is the sea temperature in Unalaska in September?

The water temperature in the Pacific Ocean in Unalaska in September ranges from 45°F to 48°F (7°C to 9°C).

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

The average sea temperature in Unalaska in September is 48°F (9°C), and the air temperature is 54°F (12°C), so the water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.