Wonsan Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Wonsan.
Climate overview of Wonsan
The climate in Wonsan, North Korea, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in August to 1°C (34°F) in January.
The city has a wet climate, receiving around 1298 mm (51 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. July is the wettest month. Sunshine peaks in May, when the city sees around 7.9 hours of sunshine per day.
Wonsan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Wonsan - and find the best time to visit.
Monthly Temperature in Wonsan
In Wonsan, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 27°C (81°F) in August to a very cold 1°C (34°F) in January.
Nighttime temperatures range from 21°C (70°F) in August to -8°C (18°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Wonsan
Wonsan experiences significant rain/snowfall throughout the year, averaging 1298 mm (51 in) of precipitation annually. The seasons in Wonsan bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 266 mm (10 in) of precipitation. This rainfall is distributed across 16 rainy days.
In contrast, the driest month, January, experiences much less snowfall, totaling 36 mm (1.4 in) over 7 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Wonsan 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 Wonsan
Wonsan enjoys sunny spells year-round. May sees up to 7.9 hours of daily sunshine, perfect for a sunny trip. July, the least sunny month, still offers a generous 5.8 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Water Temperature in Wonsan
The mean water temperature over the year ranges from 4°C (39°F) in January to 24°C (75°F) in August.
Water temperature over the year
Humidity in Wonsan by Month
The relative humidity is high throughout the year in Wonsan.
The city experiences its highest humidity in July, reaching 83%. In December, the humidity drops to its lowest level at 52%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Wonsan
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, September and October
- Warmest weather: July and August
- Most sunshine: March, April and May
- Best for swimming: July, August and September.
- Wettest months: June, July, August and September, when rainfall is highest.
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Wonsan
What is the best time to visit Wonsan?
May, June, September and October typically offer the most optimal weather in Wonsan. In contrast, January, February, March, July and December tend to have less optimal conditions. Wonsan has warm summers and very cold winters.
What temperatures can I expect in Wonsan?
Daytime highs range from 1°C (34°F) in January to 27°C (81°F) in August. Nighttime lows range from -8°C (18°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Wonsan get?
Annual rainfall is around 1298 mm (51 in). July is the wettest month with 266 mm (10 in), while January is the driest with 36 mm (1.4 in).
How sunny is Wonsan?
Wonsan receives around 2,471 hours of sunshine per year. May is the sunniest month with 236 hours, while July is the cloudiest with just 173 hours. Overall, Wonsan enjoys abundant sunshine.
Wonsan 3-Day Forecast
Wonsan on the map
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Popular this month
Where to go in September - average daytime high across popular destinations.
