Weather in January
Temperature
The coldest time of the year in Incheon, South Korea, is January, with temperatures averaging a high of 1.7°C (35.1°F) and a low of -5.4°C (22.3°F).Humidity
The least humid month in Incheon is January, with an average relative humidity of 61.5%.Rainfall
In Incheon, in January, during 6.6 rainfall days, 21mm (0.83") of precipitation is typically accumulated. Throughout the year, there are 101.9 rainfall days, and 1235mm (48.62") of precipitation is accumulated.Sea temperature
In Incheon, the average seawater temperature in January is 5°C (41°F).Note: If planning to swim in 5°C (41°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
The average length of the day in January is 9h and 55min.On the first day of January in Incheon, sunrise is at 07:47 and sunset at 17:25. On the last day of the month, sunrise is at 07:37 and sunset at 17:55 KST.
Sunshine
The average sunshine in January is 5.7h.Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
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Average temperature in January
Incheon, South Korea
- Average high temperature in January: 1.7°C
The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (1.7°C).
- Average low temperature in January: -5.4°C
The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).
Average humidity in January
Incheon, South Korea
- Average humidity in January: 61.5%
The month with the highest relative humidity is July (82.2%).
The month with the lowest relative humidity is January (61.5%).
Average rainfall in January
Incheon, South Korea
- Average rainfall in January: 20.6mm
The wettest month (with the highest rainfall) is July (319.6mm).
The driest month (with the least rainfall) is December (19.3mm).
Average rainfall days in January
Incheon, South Korea
- Average rainfall days in January: 6.6 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (5.3 days).
Average sea temperature in January
Incheon, South Korea
- Average sea temperature in January: 5°C
The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (3.3°C).
Average daylight in January /
Average sunshine in January
Incheon, South Korea
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is July (Average sunshine: 5h and 6min).
Incheon, South Korea
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