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Weather & Climate
Saikai-shi, Nagasaki, Japan
Overview
Climate data and monthly weather averages for Saikai-shi.
Key Metrics
Annual Avg
18°C
Summer Avg
25.3°C
Winter Avg
10.3°C
Record High
33.4°C
Record Low
0.1°C
Annual Precipitation
2094.4 mm
Avg Humidity
78%
Summer Humidity
86%
Winter Humidity
73%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 19.1° | 9.4° | 0.1° | 75 | 74% | 63 | 62.9 |
| Feb | 18.1° | 9.9° | 0.1° | 96.6 | 73% | 80 | 68.3 |
| Mar | 20.3° | 12° | 2.9° | 133.9 | 72% | 122 | 73.3 |
| Apr | 22.5° | 15.5° | 8.1° | 174.9 | 75% | 146 | 70 |
| May | 26.3° | 19.1° | 12.2° | 190.3 | 81% | 160 | 70 |
| Jun | 29.2° | 22.3° | 17° | 317.4 | 86% | 135 | 63.4 |
| Jul | 31.8° | 25.9° | 20.4° | 334.5 | 89% | 165 | 79.4 |
| Aug | 33.4° | 27.6° | 21° | 234.7 | 83% | 172 | 89.7 |
| Sep | 30.9° | 25.1° | 19.4° | 213.9 | 80% | 134 | 100.2 |
| Oct | 27.9° | 21.1° | 12.9° | 122.8 | 73% | 116 | 86.8 |
| Nov | 24° | 16.6° | 8.7° | 105.9 | 71% | 77 | 62.9 |
| Dec | 21.5° | 11.6° | 1.4° | 94.5 | 73% | 59 | 72.4 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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