Gunsan Weather & Climate: Best Time to Visit

The climate in Gunsan is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 30°C (86°F) in August to a chilly 5°C (41°F) in January.

Nighttime temperatures range from 24°C (75°F) in August to -2°C (28°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Gunsan has a notably wet climate with abundant precipitation, recording 1222 mm (48 in) of rain/snowfall per year. The seasons in Gunsan bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 256 mm (10 in) of precipitation. This rainfall is distributed across 14 rainy days.

In contrast, the driest month, January, experiences much less snow/rainfall, totaling 31 mm (1.2 in) over 10 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Gunsan Precipitation page.

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

The average number of days each month with precipitation

In Gunsan, summer days are longer and more sunny, with daily sunshine hours peaking at 8.5 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 5.2 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Gunsan.

The city experiences its highest humidity in July, reaching 81%. In April, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year