Unalaska — Water Temperature in July
Water Temperature Range
5°C
minimum
8°C
average
12°C
maximum
Water Temperature Chart for Month
The chart shows the average daily water temperature for each day of the month based on historical data.
Table of Water Temperatures by Day of the Month for Previous Years
| Day | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|
| JUL 1 | 8°C | 7°C | 7°C | 8°C |
| JUL 2 | 8°C | 7°C | 8°C | 7°C |
| JUL 3 | 8°C | 7°C | 7°C | 8°C |
| JUL 4 | 8°C | 7°C | 7°C | 8°C |
| JUL 5 | 8°C | 7°C | 8°C | 8°C |
| JUL 6 | 8°C | 7°C | 7°C | 9°C |
| JUL 7 | 8°C | 7°C | 8°C | 8°C |
| JUL 8 | 8°C | 7°C | 7°C | 9°C |
| JUL 9 | 8°C | 8°C | 8°C | 8°C |
| JUL 10 | 8°C | 7°C | 8°C | 9°C |
| JUL 11 | 8°C | 8°C | 7°C | 8°C |
| JUL 12 | 8°C | 8°C | 8°C | 8°C |
| JUL 13 | 8°C | 8°C | 7°C | 8°C |
| JUL 14 | 8°C | 8°C | 8°C | 8°C |
| JUL 15 | 8°C | 8°C | 8°C | 8°C |
| JUL 16 | 9°C | 8°C | 8°C | 10°C |
| JUL 17 | 8°C | 8°C | 8°C | 9°C |
| JUL 18 | 9°C | 8°C | 8°C | 9°C |
| JUL 19 | 9°C | 8°C | 8°C | 9°C |
| JUL 20 | 9°C | 8°C | 8°C | 9°C |
| JUL 21 | 9°C | 9°C | 8°C | 9°C |
| JUL 22 | 9°C | 8°C | 9°C | 9°C |
| JUL 23 | 9°C | 8°C | 8°C | 10°C |
| JUL 24 | 9°C | 8°C | 8°C | 10°C |
| JUL 25 | 9°C | 8°C | 8°C | 10°C |
| JUL 26 | 10°C | 9°C | 9°C | 10°C |
| JUL 27 | 9°C | 9°C | 9°C | 9°C |
| JUL 28 | 9°C | 9°C | 9°C | 8°C |
| JUL 29 | 9°C | 9°C | 9°C | 8°C |
| JUL 30 | 9°C | 9°C | 9°C | 8°C |
| JUL 31 | 9°C | 9°C | 9°C | 9°C |
July: Climate and Swimming Opportunities
Average Night Air Temperature
9°C
Average Day Air Temperature
17°C
Precipitation Amount per Month
47 mm
Number of Rainy Days
13
Daylight per Day
18 hrs
Sunshine per Day
8 hrs
Average Wind Speed
13 km/h
Average Humidity
80%
At such water and air temperatures, swimming feels icy and can be a shock to the body. If you go in at all, keep it extremely short and warm up immediately afterward.