Climate averages 1991–2020
Ulsan weather
in July.
A warm, very wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Ulsan: daytime highs average 27.3°C and nights cool to about 22.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 216 mm of rain on roughly 13 days, which makes July a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 18 min on an average July day.
The nearest other city in this atlas is Ungsang (20 km away). In July its highs average 26.9°C, about as warm as Ulsan, with 216 mm of rain.
Among the 79 cities listed in South Korea, Ulsan ranks 58th of 79 for the warmest July highs and joint 11th of 79 for the driest July (rainfall, lowest first). The mean July high of those 79 cities is 27.8°C; Ulsan is 0.5°C cooler than that mean.
From July to August, average highs rise by 1.0°C to 28.3°C, and monthly rainfall falls from 216 mm to 213 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ulsan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.1°C-1.0°C | -1.0°C | 31 | 4.4 | 10.010 h |
| February | 8.2°C0.1°C | 0.1°C | 39 | 5.1 | 10.911 h |
| March | 12.3°C3.6°C | 3.6°C | 71 | 7.4 | 11.912 h |
| April | 17.3°C8.1°C | 8.1°C | 92 | 7.5 | 13.113 h |
| May | 21.6°C13.0°C | 13.0°C | 100 | 7.8 | 14.014 h |
| June | 24.4°C17.6°C | 17.6°C | 143 | 9.1 | 14.515 h |
| July, selected | 27.3°C22.2°C | 22.2°C | 216 | 13.3 | 14.314 h |
| August | 28.3°C23.5°C | 23.5°C | 213 | 14.1 | 13.513 h |
| September | 24.6°C19.4°C | 19.4°C | 173 | 10.4 | 12.412 h |
| October | 20.1°C13.5°C | 13.5°C | 73 | 5.1 | 11.311 h |
| November | 14.3°C6.8°C | 6.8°C | 48 | 4.9 | 10.310 h |
| December | 8.0°C0.8°C | 0.8°C | 27 | 3.6 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Ungsang in JulySouth Korea · 20 kmHigh 26.9°C · Low 22.1°C · 216 mm rain
- Yangsan in JulySouth Korea · 34 kmHigh 27.9°C · Low 22.4°C · 241 mm rain
- Gijang in JulySouth Korea · 34 kmHigh 26.0°C · Low 22.3°C · 227 mm rain
- Gyeongju in JulySouth Korea · 35 kmHigh 29.0°C · Low 22.2°C · 200 mm rain
- Kimhae in JulySouth Korea · 52 kmHigh 27.2°C · Low 22.3°C · 241 mm rain
- Pohang in JulySouth Korea · 55 kmHigh 27.9°C · Low 22.3°C · 195 mm rain
- Busan in JulySouth Korea · 55 kmHigh 25.9°C · Low 22.3°C · 228 mm rain
- Gyeongsan-si in JulySouth Korea · 61 kmHigh 29.4°C · Low 21.8°C · 200 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ulsan) is explained once on the Ulsan year overview and on the Sources, method and limits page.
Ungsang lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.