Click on a day for an hourly weather forecast
The weather in Incheon in August is very hot. The average temperatures are between 24°C and 28°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of August in Incheon. 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 Incheon in August 2025.
If you’re planning to visit Incheon in the near future, we highly recommend that you review the 14 day weather forecast for Incheon before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -3° | 3 | 21 | 7 | 21 mm | Awful | Incheon in January |
| February | 4° / -1° | 2 | 23 | 3 | 33 mm | Awful | Incheon in February |
| March | 9° / 4° | 3 | 26 | 2 | 56 mm | Bad | Incheon in March |
| April | 14° / 9° | 5 | 25 | 0 | 82 mm | Good | Incheon in April |
| May | 19° / 14° | 5 | 26 | 0 | 123 mm | Good | Incheon in May |
| June | 24° / 19° | 5 | 25 | 0 | 136 mm | Perfect | Incheon in June |
| July | 27° / 23° | 11 | 20 | 0 | 436 mm | Good | Incheon in July |
| August | 28° / 24° | 9 | 22 | 0 | 326 mm | Good | Incheon in August |
| September | 25° / 20° | 4 | 26 | 0 | 156 mm | Perfect | Incheon in September |
| October | 19° / 14° | 2 | 29 | 0 | 74 mm | Good | Incheon in October |
| November | 12° / 7° | 4 | 24 | 1 | 84 mm | Ok | Incheon in November |
| December | 4° / -1° | 5 | 20 | 6 | 37 mm | Awful | Incheon in December |