Yearly weather and climate in Incheon, South Korea
The yearly weather in Incheon runs from around -5°C in January to 29°C in August. January is the driest month at 5 rainy days; August the wettest at 19. Here is the annual climate data, so you know what you are packing for.
Best time to visit
Weather is fairly consistent year-round. Pack for stable conditions.
Sunshine
Expect up to 9.4 hours of clear skies in May, but only 7.2 hours in Dec. Pack sunglasses and SPF accordingly.
Rainfall
It rains the most in Aug (348mm over 19 days). A reliable rain jacket is a must-have if visiting then.
Day-to-night swings
Temperatures typically drop by 8°C from day to night. Make sure to pack layers for the evenings.
Average temperatures and rainfall
Daily highs and lows in Incheon, averaged over 10 years of recorded weather, with the number of days it typically rains.
- 337°-522°5Jan
- 541°-326°5Feb
- 1151°134°6Mar
- 1661°745°6Apr
- 2169°1254°9May
- 2577°1864°10Jun
- 2883°2272°18Jul
- 2984°2373°19Aug
- 2678°1865°10Sep
- 1966°1050°6Oct
- 1254°338°6Nov
- 338°-424°5Dec
Bars span the average daily low to high. Numbers under the drop are rainy days per month (1mm or more) — hover a month for its total rainfall. Jan is typically driest at 5 days (29mm); Aug the wettest at 19 days (348mm).
| Month | Average high | Average low | Rainy days | Total rainfall |
|---|---|---|---|---|
| Jan | 3°C | -5°C | 5 | 29mm |
| Feb | 5°C | -3°C | 5 | 30mm |
| Mar | 11°C | 1°C | 6 | 52mm |
| Apr | 16°C | 7°C | 6 | 57mm |
| May | 21°C | 12°C | 9 | 124mm |
| Jun | 25°C | 18°C | 10 | 173mm |
| Jul | 28°C | 22°C | 18 | 288mm |
| Aug | 29°C | 23°C | 19 | 348mm |
| Sep | 26°C | 18°C | 10 | 182mm |
| Oct | 19°C | 10°C | 6 | 58mm |
| Nov | 12°C | 3°C | 6 | 69mm |
| Dec | 3°C | -4°C | 5 | 23mm |
Weather data by Open-Meteo.com
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