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Weather & Climate
Siheung, Gyeonggi, South Korea
Overview
Climate data and monthly weather averages for Siheung.
Key Metrics
Annual Avg
11.2°C
Summer Avg
23.3°C
Winter Avg
-1.7°C
Record High
35.4°C
Record Low
-21.3°C
Annual Precipitation
1239.7 mm
Avg Humidity
77%
Summer Humidity
81%
Winter Humidity
76%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 13.3° | -3.3° | -21.3° | 19.8 | 77% | 75 | 53.4 |
| Feb | 15° | -0.9° | -19° | 30.2 | 74% | 90 | 50.4 |
| Mar | 18.3° | 3.7° | -9.3° | 37.2 | 74% | 133 | 59.1 |
| Apr | 25.2° | 9.8° | -2.7° | 72 | 74% | 151 | 59.3 |
| May | 28.7° | 15.8° | 3.9° | 83.7 | 75% | 172 | 61.5 |
| Jun | 32.4° | 20.9° | 9.5° | 116.1 | 76% | 157 | 56.3 |
| Jul | 33.8° | 24° | 16.1° | 360.5 | 84% | 130 | 55.3 |
| Aug | 35.4° | 24.9° | 14.3° | 260.4 | 83% | 139 | 89.2 |
| Sep | 29.4° | 20.4° | 8.6° | 137.7 | 79% | 125 | 77.5 |
| Oct | 26.8° | 13.9° | -1.3° | 53.3 | 75% | 111 | 48 |
| Nov | 21.2° | 6.5° | -5.2° | 46.8 | 75% | 73 | 54.9 |
| Dec | 14.3° | -1° | -16.5° | 22 | 76% | 65 | 54.8 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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