Weather in Ulsan in September
In an average September, Ulsan sees a daily high around 25°C and a low around 17°C, based on 1980–2026 of local climate records.
| Average high | 25°C |
|---|---|
| Typical high range | 21°C to 29°C |
| Average low | 17°C |
| Typical low range | 13°C to 21°C |
| Average daily precipitation | 8 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
35°C
1994-09-01
Lowest
17°C
2001-09-30
Low
Highest
25°C
1992-09-01
Lowest
6°C
1987-09-27
Feels-like
Highest
49°C
2024-09-17
Lowest
3°C
1987-09-26
Humidity
Highest
24.3 g/m³
2024-09-17
Lowest
4.9 g/m³
2008-09-26
Wind
Highest
49 km/h
2020-09-02
Lowest
5 km/h
1982-09-30
Gust
Highest
164 km/h
2003-09-12
Lowest
13 km/h
1982-09-30
Precip
Wettest
427 mm
2016
Driest
13 mm
2026
See Ulsan's live weather grade →
Visiting Ulsan in September? See how its comfort stacks up against where you live.
Compare Ulsan with your city →