Monthly climate guide
Ulsan weather in October
October in Ulsan is typically mild, with average daytime highs around 20°C (68°F) and night-time lows near 15°C (59°F). The month usually brings about 95 mm of rain (wet) and is often cloudy. Daytime highs are 4°C cooler than September and 5°C warmer than November.
What stands out in October
- It cools down fast from here: November is about 5°C cooler.
- Skies are at their clearest this time of year.
- There's little difference between day and night (around 5°C).
- Seasonally, October counts as mid-autumn in Ulsan.
Avg high
20°C
68°F
Avg low
15°C
59°F
Rainfall
95 mm
wet
Humidity
73%
relative
Sky
55%
cloud · often cloudy
Ulsan weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 6°C / 42°F | 0°C / 32°F | 41 mm | 75% | 55% |
| February | 8°C / 46°F | 2°C / 35°F | 52 mm | 71% | 63% |
| March | 12°C / 53°F | 5°C / 41°F | 75 mm | 71% | 54% |
| April | 16°C / 61°F | 9°C / 48°F | 118 mm | 73% | 58% |
| May | 21°C / 69°F | 14°C / 57°F | 90 mm | 76% | 59% |
| June | 23°C / 74°F | 18°C / 65°F | 153 mm | 81% | 74% |
| July | 27°C / 80°F | 22°C / 72°F | 215 mm | 86% | 73% |
| August | 28°C / 83°F | 24°C / 76°F | 191 mm | 83% | 66% |
| September | 24°C / 76°F | 20°C / 68°F | 183 mm | 79% | 67% |
| October | 20°C / 68°F | 15°C / 59°F | 95 mm | 73% | 55% |
| November | 15°C / 58°F | 9°C / 48°F | 59 mm | 73% | 55% |
| December | 8°C / 46°F | 2°C / 35°F | 47 mm | 76% | 55% |
What to pack for October
- 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 October a good time to visit Ulsan?
Compare the months in the chart above to find your ideal window.
Best time to visit Ulsan →Other South Korea cities in October
Cite or embed this data
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Ulsan weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/south-korea/ulsan/october
<a href="https://weathercompare.eu/weather/south-korea/ulsan/october">Ulsan weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/south-korea/ulsan" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Ulsan weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/south-korea/ulsan/october">Ulsan weather in October</a> – WeatherCompare</p>
Ulsan in October: quick answers
Is October a good time to visit Ulsan?
Yes. October is one of the best months for Ulsan, with highs around 20°C and about 95 mm of rain.
How warm is Ulsan in October?
Average highs are about 20°C (68°F) and average lows about 15°C (59°F), based on 10 years of daily data.
Does it rain a lot in Ulsan in October?
Ulsan typically gets around 95 mm of rain in October — wet.
Figures are long-term averages for the area around Ulsan (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.