Weather in Incheon: January
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Average day temperature: | 33.9°F |
| Average night temperature: | 29.5°F | |
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Sea water temperature: | 39.2°F |
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Number of sunny days: | 15 days |
| Day length: | 9.6 - 10.3 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.6 in. | |
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forecast
| Incheon |
temperature
| Incheon |
Air temperature in January, °F
| Day temperature | Night temperature |
The highest day temperature during January of 2025 was 42°F. At the same time the lowest night temperature was 17°F. Daily and nightly averages during January were 33.4°F and 30.6°F.
Sea water temperature in Incheon in January, °F
The average sea water temperature in January of 2025 was 37.9°F. The highest and lowest sea temperatures during the month were 41.2°F and 35.4°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Mostly all days in January are sunny but cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in Incheon in January is 0.7 in. Other months of the year show relatively similar values.
The average wind speed value in January is 10.2 mph It makes January one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 6.1.
Best time for vacation in Incheon
Incheon on a weather map
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