Search for cities, countries, lakes and rivers
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
43°F
MINIMUN
48°F
AVERAGE
54°F
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
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 52°C | 48°C | 50°C | 49°C |
| Sep 2 | 50°C | 48°C | 48°C | 48°C |
| Sep 3 | 52°C | 48°C | 48°C | 49°C |
| Sep 4 | 52°C | 48°C | 48°C | 49°C |
| Sep 5 | 52°C | 48°C | 48°C | 48°C |
| Sep 6 | 52°C | 48°C | 48°C | 49°C |
| Sep 7 | 50°C | 48°C | 48°C | 48°C |
| Sep 8 | 52°C | 46°C | 48°C | 48°C |
| Sep 9 | 52°C | 46°C | 50°C | 49°C |
| Sep 10 | 50°C | 48°C | 50°C | 49°C |
| Sep 11 | 50°C | 48°C | 50°C | 48°C |
| Sep 12 | 52°C | 48°C | 50°C | 49°C |
| Sep 13 | 52°C | 48°C | 50°C | 49°C |
| Sep 14 | 50°C | 48°C | 50°C | 49°C |
| Sep 15 | 50°C | 48°C | 48°C | 48°C |
| Sep 16 | 52°C | 48°C | 48°C | 49°C |
| Sep 17 | 50°C | 48°C | 48°C | 48°C |
| Sep 18 | 50°C | 48°C | 46°C | 47°C |
| Sep 19 | 50°C | 48°C | 46°C | 47°C |
| Sep 20 | 50°C | 48°C | 48°C | 48°C |
| Sep 21 | 50°C | 48°C | 48°C | 48°C |
| Sep 22 | 50°C | 46°C | 48°C | 47°C |
| Sep 23 | 46°C | 48°C | 48°C | 47°C |
| Sep 24 | 48°C | 46°C | 48°C | 47°C |
| Sep 25 | 46°C | 46°C | 48°C | 46°C |
| Sep 26 | 48°C | 46°C | 48°C | 47°C |
| Sep 27 | 46°C | 46°C | 46°C | 46°C |
| Sep 28 | 46°C | 46°C | 46°C | 46°C |
| Sep 29 | 46°C | 46°C | 46°C | 46°C |
Unalaska Climate and Swimming Opportunities in September
54°F
Average Day Air Temperature
41°F
Average Night Air Temperature
4 in
Precipitation Amount per Month
17 days
Number of Rainy Days
13 hrs
Daylight
per Day
5 hrs
Sunshine
per Day
8 mph
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.