Weather in Seoul
Live weather and 7-day forecast for Seoul, South Korea, followed by what to expect in each month of the year.
Sunrise 06:48 Sunset 17:46 Daylight 10h 58m Sun times →
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Forecast data from Open-Meteo
Climate in Seoul: month by month
Averaged over 2023–2025, the warmest month in Seoul is August, with highs around 31 °C (87 °F) and lows around 23 °C (74 °F); the coolest is January, with highs around 2 °C (36 °F) and lows around -7 °C (20 °F). Average lows fall below freezing in December–February.
Seoul gets about 1,469 mm (58 in) of precipitation a year. The wettest month is July (392 mm over about 19 days) and the driest is January (24 mm).
| Month | Avg high | Avg low | Precipitation (mm) | Wet days | Daylight |
|---|---|---|---|---|---|
| January | 2° | -7° | 24 | 5 | 9h 50m |
| February | 5° | -4° | 24 | 5 | 10h 48m |
| March | 12° | 1° | 38 | 7 | 11h 54m |
| April | 19° | 8° | 83 | 9 | 13h 8m |
| May | 22° | 12° | 132 | 9 | 14h 10m |
| June | 28° | 18° | 143 | 12 | 14h 44m |
| July | 30° | 23° | 392 | 19 | 14h 31m |
| August | 31° | 23° | 234 | 17 | 13h 39m |
| September | 27° | 19° | 216 | 14 | 12h 28m |
| October | 19° | 11° | 88 | 8 | 11h 17m |
| November | 11° | 2° | 52 | 6 | 10h 11m |
| December | 3° | -5° | 43 | 6 | 9h 35m |
Averages of daily values from the ERA5 reanalysis for 2023–2025 at Seoul's coordinates (model elevation 34 m), via Open-Meteo (CC BY 4.0). Three recent years are not a 30-year climate normal; reanalysis smooths local extremes and tends to count more light-rain days than a rain gauge would. Daylight is sunrise to sunset on the 15th of each month.
Weather questions for Seoul
What is the hottest month in Seoul?
August, with average highs of 31 °C (87 °F) and lows of 23 °C (74 °F) over 2023–2025. The coolest month is January, averaging 2 °C (36 °F) by day and -7 °C (20 °F) at night.
What is the rainiest month in Seoul?
July, with about 392 mm of precipitation on roughly 19 days. The driest month is January (24 mm), and the yearly total is around 1,469 mm.
When is the weather mildest in Seoul?
Going by the averages, April–May and September–October are the months with average daytime highs between 18 °C and 27 °C (64–81 °F) — warm but not hot. July is the month most likely to bring rain.
More about Seoul
Weather in nearby cities
More for Seoul
More for Seoul: local time, sunrise and sunset, moon phases, and the exact time zone.
About this forecast
The live forecast comes from Open-Meteo, which blends models from national weather services and is fetched fresh in your browser on each visit. Times in the hourly outlook are Seoul local time (Asia/Seoul).