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Weather & Climate
Unalaska, Alaska, United States
Overview
Available climate summaries for Unalaska. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
4.6°C
Summer Avg
8.8°C
Winter Avg
1.2°C
Record High
16.3°C
Record Low
-9.5°C
Annual Precipitation
1309.2 mm
Avg Humidity
87%
Summer Humidity
92%
Winter Humidity
85%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 5.2° | 0.8° | -9.2° | 120 | 85% | 19 | 90.5 |
| Feb | 5.6° | 1.1° | -9.5° | 106.7 | 85% | 34 | 98 |
| Mar | 6.4° | 0.6° | -9.4° | 80 | 83% | 73 | 100.5 |
| Apr | 7.7° | 2.1° | -6.1° | 81.3 | 85% | 105 | 80.9 |
| May | 13.4° | 4.2° | -1.9° | 99.5 | 89% | 131 | 75.7 |
| Jun | 12° | 7° | 1.9° | 92.7 | 91% | 135 | 63.3 |
| Jul | 15.7° | 9.3° | 4.2° | 92.7 | 93% | 124 | 61.8 |
| Aug | 16.3° | 10.2° | 5.9° | 93.6 | 92% | 106 | 93.7 |
| Sep | 14.3° | 8.7° | 3.8° | 117 | 89% | 77 | 77.3 |
| Oct | 11° | 6° | 0.2° | 139.5 | 85% | 50 | 87 |
| Nov | 8.8° | 3.5° | -3.9° | 118.5 | 84% | 23 | 99.1 |
| Dec | 6.8° | 1.8° | -6° | 167.7 | 84% | 14 | 103.5 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.
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