Sejong Climate by Month
Sejong, Sejong-si, South Korea
Hot summers and cold winters, with most rain from May to September.
Hot summers and cold winters, with most rain from May to September: that's Sejong's climate in short. Afternoon highs range from 37°F (3°C) in January to 86°F (30°C) in August, and January nights average 18°F (-8°C). It gets 46 in (1177 mm) of rain a year, 75% of it from May to September.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 18°F(-8°C)
- Average low, January
- Rain per year
- 46 in(1177 mm)
- Wettest: July
- Humidity
- 66%
- Sunniest: May
Best and worst months in Sejong
Best for weatherMay is the best time for weather in Sejong: highs near 76°F (25°C) and about 3.1 in (80 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 37°F (3°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)
Sejong weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 37°F(3°C) | 18°F(-8°C) | 0.9 in(22 mm) | 59% | 2.4 |
| FebFebruary | 43°F(6°C) | 22°F(-6°C) | 1.2 in(30 mm) | 65% | 3.3 |
| MarMarch | 54°F(12°C) | 31°F(-1°C) | 1.7 in(44 mm) | 54% | 4.2 |
| AprApril | 67°F(19°C) | 42°F(5°C) | 3.0 in(75 mm) | 56% | 5.1 |
| MayMayBest | 76°F(25°C) | 53°F(12°C) | 3.1 in(80 mm) | 57% | 5.6 |
| JunJune | 83°F(28°C) | 64°F(18°C) | 5.1 in(130 mm) | 64% | 5.4 |
| JulJuly | 85°F(30°C) | 71°F(22°C) | 11 in(281 mm) | 76% | 4.6 |
| AugAugust | 86°F(30°C) | 71°F(22°C) | 10 in(258 mm) | 78% | 4.5 |
| SepSeptember | 79°F(26°C) | 59°F(15°C) | 5.4 in(138 mm) | 74% | 4.1 |
| OctOctober | 69°F(21°C) | 45°F(7°C) | 2.0 in(50 mm) | 69% | 3.7 |
| NovNovember | 55°F(13°C) | 33°F(1°C) | 1.6 in(41 mm) | 71% | 2.6 |
| DecDecember | 41°F(5°C) | 22°F(-6°C) | 1.1 in(28 mm) | 67% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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