Click on a day for an hourly weather forecast
The weather in Seoul in August is very hot. The average temperatures are between 24°C and 29°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of August in Seoul. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Seoul in August 2025.
If you’re planning to visit Seoul in the near future, we highly recommend that you review the 14 day weather forecast for Seoul before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -4° | 4 | 19 | 8 | 25 mm | Awful | Seoul in January |
| February | 4° / -1° | 2 | 22 | 4 | 35 mm | Awful | Seoul in February |
| March | 10° / 4° | 3 | 26 | 2 | 59 mm | Bad | Seoul in March |
| April | 15° / 9° | 5 | 25 | 0 | 83 mm | Good | Seoul in April |
| May | 21° / 14° | 5 | 26 | 0 | 119 mm | Good | Seoul in May |
| June | 25° / 19° | 5 | 25 | 0 | 138 mm | Perfect | Seoul in June |
| July | 28° / 23° | 11 | 20 | 0 | 438 mm | Good | Seoul in July |
| August | 29° / 24° | 10 | 21 | 0 | 325 mm | Ok | Seoul in August |
| September | 26° / 20° | 5 | 25 | 0 | 156 mm | Perfect | Seoul in September |
| October | 20° / 14° | 3 | 28 | 0 | 77 mm | Good | Seoul in October |
| November | 12° / 7° | 4 | 24 | 2 | 86 mm | Bad | Seoul in November |
| December | 3° / -1° | 5 | 18 | 8 | 40 mm | Awful | Seoul in December |