Click on a day for an hourly weather forecast
The temperatures in Bolsward in September are usually low and can range between 13°C and 18°C.
You can expect about 3 to 8 days of rain in Bolsward 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 Bolsward in September 2026.
If you’re planning to visit Bolsward in the near future, we highly recommend that you review the 14 day weather forecast for Bolsward before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 3° | 8 | 22 | 1 | 61 mm | Awful | Bolsward in January |
| February | 6° / 2° | 7 | 20 | 1 | 52 mm | Awful | Bolsward in February |
| March | 8° / 4° | 6 | 25 | 1 | 43 mm | Ok | Bolsward in March |
| April | 11° / 6° | 6 | 24 | 0 | 41 mm | Ok | Bolsward in April |
| May | 14° / 9° | 7 | 24 | 0 | 59 mm | Ok | Bolsward in May |
| June | 18° / 12° | 8 | 22 | 0 | 71 mm | Ok | Bolsward in June |
| July | 20° / 15° | 9 | 22 | 0 | 91 mm | Ok | Bolsward in July |
| August | 20° / 15° | 10 | 21 | 0 | 90 mm | Ok | Bolsward in August |
| September | 18° / 13° | 7 | 23 | 0 | 71 mm | Ok | Bolsward in September |
| October | 14° / 10° | 9 | 22 | 0 | 72 mm | Ok | Bolsward in October |
| November | 10° / 7° | 8 | 22 | 0 | 63 mm | Bad | Bolsward in November |
| December | 7° / 4° | 10 | 21 | 1 | 72 mm | Bad | Bolsward in December |