Mud festival in South Korea
In July, the peaceful seaside town of Boryeong turned into a chaos of mud for 9 days. We recommend putting this festival on your bucket list.
Gunsan Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Gunsan.
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Climate overview of Gunsan
Temperatures in Gunsan, Jeollabuk-Do, South Korea, vary greatly throughout the year. August is the hottest month at 30°C (86°F), while January is the coldest at 5°C (41°F).
The city has a wet climate, receiving around 1222 mm (48 in) of rain/snowfall per year. Despite the high annual total, it has a distinct dry season from December to February, with very warm summers and cold winters. July is the wettest month. The sunniest month is May, with 8.5 hours of sunshine per day on average.
Gunsan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Gunsan - and find the best time to visit.
Monthly Temperature in Gunsan
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
Rainfall in Gunsan
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
Sunshine Hours in Gunsan
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
Data from: Buan, South Korea (44 KM, 27 Miles).
Daily hours of sunshine
Data from: Buan, South Korea (44 KM, 27 Miles).
Daily percentage of sunshine
Data from: Buan, South Korea (44 KM, 27 Miles).
Humidity in Gunsan by Month
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
Data from: Buan, South Korea (44 KM, 27 Miles).
Best Time to Visit Gunsan
For comfortable weather, consider visiting Gunsan in May and October. Conditions are usually least favourable in January, February, August and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
mixed
Apr
good
May
excellent
Jun
very good
Jul
mixed
Aug
very wet
Sep
very good
Oct
excellent
Nov
good
Dec
cold
- Best overall: May and October
- Warmest weather: July and August
- Most sunshine: May
- Fewest rainy days: March, May and October
- Wettest months: June, July, August and September, when rainfall is highest.
- Seasonal pattern: A distinct dry season from December to February, with very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Gunsan
What is the best time to visit Gunsan?
May and October typically offer the most optimal weather in Gunsan. In contrast, January, February, August and December tend to have less optimal conditions. Gunsan has a distinct dry season from December to February, with very warm summers and cold winters.
What temperatures can I expect in Gunsan?
Daytime highs range from 5°C (41°F) in January to 30°C (86°F) in August. Nighttime lows range from -2°C (28°F) to 24°C (75°F). Temperatures vary considerably through the year.
How much rain does Gunsan get?
Annual rainfall is around 1222 mm (48 in). July is the wettest month with 256 mm (10 in), while January is the driest with 31 mm (1.2 in).
How sunny is Gunsan?
Gunsan receives around 2,478 hours of sunshine per year. May is the sunniest month with 255 hours, while December is the cloudiest with just 155 hours. Overall, Gunsan enjoys abundant sunshine.
Gunsan 3-Day Forecast
Gunsan on the map
Gunsan is highlighted - select any city to see its climate.
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