Monthly climate guide
Hwaseong weather in September
September in Hwaseong is typically warm, with average daytime highs around 25°C (76°F) and night-time lows near 17°C (63°F). The month usually brings about 110 mm of rain (wet) and is often cloudy. Daytime highs are 4°C cooler than August and 6°C warmer than October.
What stands out in September
- Just 110 km apart, but Hwaseong runs about 2°C warmer than Chuncheon this month.
- It cools down fast from here: October is about 6°C cooler.
- Seasonally, September counts as early autumn in Hwaseong.
Avg high
25°C
76°F
Avg low
17°C
63°F
Rainfall
110 mm
wet
Humidity
78%
relative
Sky
55%
cloud · often cloudy
Hwaseong weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 2°C / 35°F | -5°C / 23°F | 18 mm | 75% | 56% |
| February | 4°C / 39°F | -3°C / 26°F | 34 mm | 73% | 53% |
| March | 10°C / 49°F | 0°C / 33°F | 35 mm | 74% | 48% |
| April | 16°C / 60°F | 5°C / 42°F | 80 mm | 75% | 53% |
| May | 22°C / 71°F | 11°C / 52°F | 73 mm | 75% | 54% |
| June | 26°C / 79°F | 17°C / 62°F | 113 mm | 76% | 63% |
| July | 28°C / 82°F | 21°C / 70°F | 324 mm | 84% | 75% |
| August | 29°C / 84°F | 22°C / 72°F | 237 mm | 83% | 65% |
| September | 25°C / 76°F | 17°C / 63°F | 110 mm | 78% | 55% |
| October | 19°C / 66°F | 11°C / 51°F | 64 mm | 74% | 43% |
| November | 12°C / 53°F | 4°C / 40°F | 59 mm | 75% | 55% |
| December | 4°C / 39°F | -3°C / 27°F | 31 mm | 75% | 55% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is September a good time to visit Hwaseong?
Compare the months in the chart above to find your ideal window.
Best time to visit Hwaseong →Other South Korea cities in September
Cite or embed this data
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Hwaseong weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/south-korea/hwaseong/september
<a href="https://weathercompare.eu/weather/south-korea/hwaseong/september">Hwaseong weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/south-korea/hwaseong" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Hwaseong weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/south-korea/hwaseong/september">Hwaseong weather in September</a> – WeatherCompare</p>
Hwaseong in September: quick answers
Is September a good time to visit Hwaseong?
September is one of the wetter months in Hwaseong, with about 110 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Hwaseong in September?
Average highs are about 25°C (76°F) and average lows about 17°C (63°F), based on 10 years of daily data.
Does it rain a lot in Hwaseong in September?
Hwaseong typically gets around 110 mm of rain in September — wet.
Figures are long-term averages for the area around Hwaseong (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.