Click on a day for an hourly weather forecast
The weather in Hakone in August is hot. The average temperatures are between 22°C and 28°C.
You can expect about 3 to 8 days of rain in Hakone during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Hakone in August 2025.
If you’re planning to visit Hakone in the near future, we highly recommend that you review the 14 day weather forecast for Hakone before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 8° / 1° | 4 | 24 | 3 | 103 mm | Bad | Hakone in January |
| February | 8° / 2° | 7 | 18 | 4 | 164 mm | Awful | Hakone in February |
| March | 11° / 5° | 8 | 22 | 1 | 256 mm | Bad | Hakone in March |
| April | 15° / 9° | 9 | 21 | 0 | 290 mm | Ok | Hakone in April |
| May | 21° / 14° | 8 | 23 | 0 | 255 mm | Ok | Hakone in May |
| June | 23° / 17° | 9 | 21 | 0 | 307 mm | Good | Hakone in June |
| July | 27° / 21° | 11 | 21 | 0 | 336 mm | Good | Hakone in July |
| August | 28° / 22° | 7 | 24 | 0 | 210 mm | Good | Hakone in August |
| September | 24° / 18° | 9 | 21 | 0 | 322 mm | Good | Hakone in September |
| October | 19° / 13° | 8 | 24 | 0 | 337 mm | Ok | Hakone in October |
| November | 15° / 9° | 6 | 24 | 0 | 159 mm | Good | Hakone in November |
| December | 10° / 4° | 5 | 25 | 1 | 128 mm | Ok | Hakone in December |