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Weather & Climate
Koga-shi, Ibaraki, Japan
Overview
Available climate summaries for Koga-shi. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
13.9°C
Summer Avg
23.6°C
Winter Avg
3.3°C
Record High
38.9°C
Record Low
-17.5°C
Annual Precipitation
1597 mm
Avg Humidity
77%
Summer Humidity
83%
Winter Humidity
71%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 7.3° | 2.1° | -2° | 46.8 | 69% | 253 | 15.1 |
| Feb | 8.3° | 3° | -1.3° | 62.4 | 69% | 252 | 15.9 |
| Mar | 12° | 6.8° | 2.2° | 98.2 | 71% | 259 | 17 |
| Apr | 17.6° | 12.5° | 8° | 123.2 | 74% | 262 | 17.3 |
| May | 22.1° | 17.2° | 13° | 148.3 | 77% | 263 | 15.9 |
| Jun | 24.8° | 20.7° | 17.4° | 195.8 | 82% | 216 | 14.1 |
| Jul | 28.3° | 24.4° | 21.4° | 192.6 | 84% | 233 | 12.9 |
| Aug | 29.8° | 25.8° | 22.7° | 175.7 | 83% | 269 | 13.5 |
| Sep | 25.8° | 22.1° | 19.2° | 221.7 | 83% | 215 | 13.3 |
| Oct | 20.2° | 16.2° | 12.7° | 171.6 | 80% | 214 | 12.4 |
| Nov | 14.9° | 10.3° | 6.3° | 86.9 | 78% | 218 | 12.2 |
| Dec | 9.9° | 4.7° | 0.5° | 47.8 | 74% | 233 | 13.5 |
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 2026-03-20.
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