Wonsan Weather in September
September in Wonsan brings high temperatures, with highs of 24°C (75°F) and nights dropping to 16°C (61°F). Rainfall is on the higher side this month, averaging around 152 mm (6 in), so keep a rain jacket handy.
Rainfall in Wonsan in September
Expect around 9 days of rain based on historical data, with 152 mm (6 in) average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Wonsan in September
September in Wonsan brings high temperatures, with highs of 24°C (75°F) and nights around 16°C (61°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 16°C (61°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Wonsan in September
The days are predominantly sunny, with an estimated total of around 198 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Average water temperature in September
With water at 22°C (72°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.If your ideal day consists of dry skies and pleasant temperatures, May, June, September and October typically offer the best circumstances for Wonsan.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit North Korea, check out our Wonsan's climate page.
Wonsan Temperature in September
Min Temperature
16°C (61°F)
Max Temperature
24°C (75°F)
Water Temperature
22°C (72°F)
Chance of Rain
31%
Precipitation
152 mm (6 in)
Rainy days
9 days
Humidity
67%
Sunshine
198 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Wonsan typically drop from around 24°C (75°F) at the start of September to approximately 21°C (70°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 19°C (66°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Wonsan in September
Browse day-by-day weather records for Wonsan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Wonsan historical weather extremes in September
The extremes listed below come from historical weather data collected in Wonsan from 2006 through 2025.
- The hottest September day on record in Wonsan reached 32°C (90°F) (September 8, 2017).
- The lowest daytime temperature in September was 17°C (63°F), recorded on September 22, 2010.
- The coldest night in September in Wonsan was on September 27, 2015, with a minimum of 6°C (43°F).
Best Places in North Korea in September
Find out more about the weather in North Korea and which places have the best travel conditions in this month. See all of North Korea in September →
perfect weather
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What to Wear in Wonsan in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Expect water temperatures of around 22°C (72°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Wonsan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit North Korea, check out our Wonsan's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Wonsan climate overview or explore weather in North Korea.
