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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.
Suwon Weather in September
September in Suwon brings high temperatures, with daytime highs of 27°C (81°F) and nights around 17°C (63°F). Quite a bit of rainfall is expected, around 131 mm (5.2 in), so pack an umbrella.
Rainfall in Suwon in September
Typically, about 9 days will experience rainfall, with an average of 131 mm (5.2 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Suwon in September
September in Suwon brings high temperatures, with highs of 27°C (81°F) and nights around 17°C (63°F). This kind of day-to-night contrast is typical for this time of year. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Suwon in September
The month brings about 182 hours of sunlight, offering a comfortable mix of sun and overcast.If you prefer dry days with pleasant temperatures, May and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Suwon Temperature in September
Min Temperature
17°C (63°F)
Max Temperature
27°C (81°F)
Chance of Rain
28%
Precipitation
131 mm (5.2 in)
Rainy days
9 days
Humidity
67% *
Sunshine
182 hours *
Percentage Sunshine
48% *
* Data from: Seoul, South Korea (31 KM, 19 Miles).
Suwon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Suwon - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Suwon typically drop from around 28°C (82°F) at the start of September to approximately 24°C (75°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 20°C (68°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 records for Suwon in September
Browse day-by-day weather records for Suwon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Suwon historical weather extremes in September
Based on 49 years of weather observations in Suwon between 1976 and 2025, these are the recorded extremes.
- Suwon recorded its highest September temperature of 34°C (93°F) on September 17, 2024.
- On September 26, 1987, Suwon saw its coldest September day with temperatures maxing out at 17°C (63°F).
- The coldest night in September in Suwon was on September 27, 1987, with a minimum of 4°C (39°F).
Best Places in South Korea in September
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Suwon in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Suwon in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Suwon 3-Day Forecast
More climate data for Suwon
Temperature Rainfall Sunshine Humidity
See the full Suwon climate overview or explore weather in South Korea.
Popular in September
Where to go in September - average daytime high across popular destinations.
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Mud festival in South Korea
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