Click on a day for an hourly weather forecast
The temperatures in Hokkaido in September are usually low and can range between 13°C and 20°C.
You can expect about 3 to 8 days of rain in Hokkaido during the month of September. 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 Hokkaido in September 2025.
If you’re planning to visit Hokkaido in the near future, we highly recommend that you review the 14 day weather forecast for Hokkaido before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -10° | 6 | 1 | 30 | 157 mm | Awful | Hokkaido in January |
| February | -4° / -10° | 6 | 1 | 26 | 124 mm | Awful | Hokkaido in February |
| March | 1° / -6° | 10 | 3 | 22 | 133 mm | Awful | Hokkaido in March |
| April | 9° / 1° | 9 | 15 | 7 | 106 mm | Awful | Hokkaido in April |
| May | 16° / 7° | 8 | 23 | 0 | 126 mm | Ok | Hokkaido in May |
| June | 20° / 11° | 8 | 22 | 0 | 147 mm | Ok | Hokkaido in June |
| July | 24° / 16° | 9 | 22 | 0 | 210 mm | Good | Hokkaido in July |
| August | 24° / 16° | 9 | 22 | 0 | 239 mm | Good | Hokkaido in August |
| September | 20° / 13° | 7 | 23 | 0 | 199 mm | Ok | Hokkaido in September |
| October | 13° / 6° | 6 | 24 | 1 | 145 mm | Ok | Hokkaido in October |
| November | 5° / 0° | 10 | 7 | 13 | 177 mm | Awful | Hokkaido in November |
| December | -2° / -6° | 8 | 2 | 26 | 172 mm | Awful | Hokkaido in December |