Monthly climate guide
Gangneung weather in September
With highs near 22°C (72°F) and lows around 18°C (64°F), September feels warm in Gangneung. Rainfall averages about 174 mm (very wet) and the sky is often cloudy. Daytime highs are 4°C cooler than August and 5°C warmer than October.
What stands out in September
- Just 170 km apart, but Gangneung runs about 3°C cooler than Seoul this month.
- Seasonally, September counts as early autumn in Gangneung.
- Rain is above Gangneung's usual level, by about 47%.
- There's little difference between day and night (around 4°C).
Avg high
22°C
72°F
Avg low
18°C
64°F
Rainfall
174 mm
very wet
Humidity
78%
relative
Sky
66%
cloud · often cloudy
Gangneung weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 2°C / 36°F | -3°C / 27°F | 27 mm | 75% | 46% |
| February | 4°C / 38°F | -2°C / 29°F | 49 mm | 72% | 50% |
| March | 9°C / 48°F | 2°C / 36°F | 42 mm | 69% | 51% |
| April | 14°C / 57°F | 7°C / 44°F | 96 mm | 70% | 59% |
| May | 20°C / 68°F | 12°C / 54°F | 68 mm | 70% | 57% |
| June | 23°C / 74°F | 17°C / 63°F | 122 mm | 76% | 70% |
| July | 26°C / 79°F | 21°C / 70°F | 349 mm | 83% | 78% |
| August | 27°C / 80°F | 22°C / 72°F | 275 mm | 83% | 73% |
| September | 22°C / 72°F | 18°C / 64°F | 174 mm | 78% | 66% |
| October | 17°C / 63°F | 12°C / 54°F | 100 mm | 72% | 51% |
| November | 11°C / 52°F | 6°C / 43°F | 82 mm | 74% | 53% |
| December | 4°C / 39°F | -1°C / 30°F | 37 mm | 77% | 47% |
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 Gangneung?
Compare the months in the chart above to find your ideal window.
Best time to visit Gangneung →Other South Korea cities in September
Cite or embed this data
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Gangneung weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/south-korea/gangneung/september
<a href="https://weathercompare.eu/weather/south-korea/gangneung/september">Gangneung weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/south-korea/gangneung" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Gangneung weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/south-korea/gangneung/september">Gangneung weather in September</a> – WeatherCompare</p>
Gangneung in September: quick answers
Is September a good time to visit Gangneung?
September is one of the wetter months in Gangneung, with about 174 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Gangneung in September?
Average highs are about 22°C (72°F) and average lows about 18°C (64°F), based on 10 years of daily data.
Does it rain a lot in Gangneung in September?
Gangneung typically gets around 174 mm of rain in September — very wet.
Figures are long-term averages for the area around Gangneung (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.