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.
Dongtan Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dongtan.
–
Climate overview of Dongtan
Temperatures in Dongtan, Gyeonggi-do, South Korea, vary greatly throughout the year. August is the hottest month at 31°C (88°F), while January is the coldest at 4°C (39°F).
The city has a wet climate, receiving around 1198 mm (47 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 8.3 hours of sunshine per day on average.
Dongtan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dongtan - and find the best time to visit.
Monthly Temperature in Dongtan
The climate in Dongtan is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 31°C (88°F) in August to a chilly 4°C (39°F) in January.
Nighttime temperatures range from 22°C (72°F) in August to -6°C (21°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Dongtan
Dongtan has a notably wet climate with abundant precipitation, recording 1198 mm (47 in) of rain/snowfall per year. The seasons in Dongtan bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 287 mm (11 in) of precipitation. This rainfall is distributed across 16 rainy days.
In contrast, the driest month, January, experiences much less snow/rainfall, totaling 24 mm (0.9 in) over 8 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Dongtan 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 Dongtan
Dongtan enjoys sunny spells year-round. May sees up to 8.3 hours of daily sunshine, perfect for a sunny trip. December, the least sunny month, still offers a generous 5.3 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Cheonan, South Korea (42 KM, 26 Miles).
Daily hours of sunshine
Data from: Cheonan, South Korea (42 KM, 26 Miles).
Daily percentage of sunshine
Data from: Cheonan, South Korea (42 KM, 26 Miles).
Humidity in Dongtan by Month
The relative humidity is high throughout the year in Dongtan.
The city experiences its highest humidity in July, reaching 78%. In April, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Cheonan, South Korea (42 KM, 26 Miles).
Best Time to Visit Dongtan
The most comfortable overall weather for exploring Dongtan is usually found in May and October. Conditions are generally least comfortable in January, February, July and August.
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
very good
May
excellent
Jun
very good
Jul
very wet
Aug
very wet
Sep
very good
Oct
excellent
Nov
mixed
Dec
mixed
- Best overall: May and October
- Warmest weather: July and August
- Most sunshine: May
- 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 -6°C (21°F).
Frequently asked questions about the climate in Dongtan
What is the best time to visit Dongtan?
May and October typically offer the most optimal weather in Dongtan. In contrast, January, February, July and August tend to have less optimal conditions. Dongtan has a distinct dry season from December to February, with very warm summers and cold winters.
What temperatures can I expect in Dongtan?
Daytime highs range from 4°C (39°F) in January to 31°C (88°F) in August. Nighttime lows range from -6°C (21°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Dongtan get?
Annual rainfall is around 1198 mm (47 in). July is the wettest month with 287 mm (11 in), while January is the driest with 24 mm (0.9 in).
How sunny is Dongtan?
Dongtan receives around 2,416 hours of sunshine per year. May is the sunniest month with 248 hours, while December is the cloudiest with just 159 hours. Overall, Dongtan enjoys abundant sunshine.
Dongtan 3-Day Forecast
Dongtan on the map
Dongtan is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Mud festival in South Korea
10 Hidden gems in Asia you need to visit
Explore 10 hidden gems in Asia offering authentic experiences, from pristine beaches and remote islands to cultural treks and peaceful mountain villages.
Chase the autumn leaves in Japan
Japan is one of these cases which turns into a gold, yellow and orange fairy tale starting from September. And we can honestly say: We cannot imagine a more beautiful season to visit Japan.
The 10 Most Exquisite Beaches in the Philippines
Explore the top 10 breathtaking beaches in the Philippines, from serene Nacpan Beach to volcanic Camiguin Island, in our detailed guide.