Incheon Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from comfortable to chilly in Incheon. Average daytime temperatures reach a comfortable 29°C (84°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).

At night, temperatures range from around 23°C (73°F) in August to -5°C (23°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Incheon has a relatively rain/snowy climate with high precipitation levels, averaging 1208 mm (48 in) of rain/snowfall annually. Incheon can be quite wet during July, receiving approximately 302 mm (12 in) of precipitation over 15 rainy days.

In contrast, during the driest month (January), you will experience much drier conditions, with 22 mm (0.9 in) of precipitation spread across 7 snowy/rainy days days. For more details, please visit our Incheon Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Incheon experiences moderate variation in sunshine hours across the seasons. With 8.1 hours daily sunshine in May, it dips to 5.4 hours in July, offering a balanced mix of sunny and overcast days.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Incheon.

The city experiences its highest humidity in July, reaching 82%. In January, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year