January
Weather in January
Temperature
In Seoul, the lowest average temperatures are observed in January, with a high of 1.5°C (34.7°F) and a low of -5.9°C (21.4°F).Humidity
In Seoul, the average relative humidity in January is 59.8%.Rainfall
The month with the least rainfall is January, when the rain falls for 6.5 days and typically collects 21mm (0.83") of precipitation.Daylight
In Seoul, the average length of the day in January is 9h and 55min.On the first day of the month, sunrise is at 07:46 and sunset at 17:23. On the last day of January, sunrise is at 07:37 and sunset at 17:53 KST.
Sunshine
In January, the average sunshine is 5.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 2 in January leads to these recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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Average temperature in January
Seoul, South Korea
- Average high temperature in January: 1.5°C
The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (1.5°C).
- Average low temperature in January: -5.9°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 (-5.9°C).
Average humidity in January
Seoul, South Korea
- Average humidity in January: 59.8%
The month with the highest relative humidity is July (78.3%).
The month with the lowest relative humidity is April (56.2%).
Average rainfall in January
Seoul, South Korea
- Average rainfall in January: 20.8mm
The wettest month (with the highest rainfall) is July (394.7mm).
The driest month (with the least rainfall) is January (20.8mm).
Average rainfall days in January
Seoul, South Korea
- Average rainfall days in January: 6.5 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (5.8 days).
Average daylight in January /
Average sunshine in January
Seoul, 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 1min
The month with the most sunshine is May (Average sunshine: 6h and 54min).
The month with the least sunshine is July (Average sunshine: 3h and 54min).
Average UV index in January
Seoul, South Korea
- Average UV index in January: 2
The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).
