Ulsan Climate by Month
Ulsan, South Korea
Hot summers and cold winters, with most rain from May to September.
The climate in Ulsan is one of hot summers and cold winters, with most rain from May to September. Expect highs of 86°F (30°C) in August and 46°F (8°C) in January, with the coldest nights (January) near 28°F (-2°C). It gets 48 in (1213 mm) of rain a year, 71% of it from May to September.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 28°F(-2°C)
- Average low, January
- Rain per year
- 48 in(1213 mm)
- Wettest: August
- Humidity
- 62%
- Sunniest: May
Best and worst months in Ulsan
Best for weatherMay and October are the best time for weather in Ulsan: highs near 74°F (23°C) and about 3.2 in (81 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 46°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Ulsan weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 46°F(8°C) | 28°F(-2°C) | 1.1 in(29 mm) | 54% | 2.4 |
| FebFebruary | 50°F(10°C) | 31°F(-1°C) | 1.5 in(38 mm) | 47% | 3.0 |
| MarMarch | 58°F(14°C) | 38°F(4°C) | 2.5 in(63 mm) | 53% | 3.8 |
| AprApril | 67°F(20°C) | 47°F(9°C) | 3.5 in(90 mm) | 56% | 4.7 |
| MayMayBest | 75°F(24°C) | 56°F(13°C) | 3.8 in(97 mm) | 60% | 5.2 |
| JunJune | 79°F(26°C) | 64°F(18°C) | 5.6 in(143 mm) | 72% | 4.8 |
| JulJuly | 85°F(29°C) | 72°F(22°C) | 8.8 in(224 mm) | 76% | 4.3 |
| AugAugust | 86°F(30°C) | 73°F(23°C) | 9.0 in(228 mm) | 75% | 4.3 |
| SepSeptember | 79°F(26°C) | 64°F(18°C) | 6.5 in(165 mm) | 75% | 3.6 |
| OctOctoberBest | 72°F(22°C) | 53°F(12°C) | 2.5 in(64 mm) | 67% | 3.4 |
| NovNovember | 62°F(16°C) | 42°F(5°C) | 1.7 in(44 mm) | 62% | 2.6 |
| DecDecember | 50°F(10°C) | 31°F(-1°C) | 1.1 in(28 mm) | 47% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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