Click on a day for an hourly weather forecast
The temperatures in Den Helder 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 Den Helder 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 Den Helder in September 2025.
If you’re planning to visit Den Helder in the near future, we highly recommend that you review the 14 day weather forecast for Den Helder before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 3° | 8 | 19 | 5 | 56 mm | Awful | Den Helder in January |
| February | 6° / 3° | 7 | 16 | 5 | 45 mm | Awful | Den Helder in February |
| March | 9° / 4° | 4 | 25 | 1 | 35 mm | Ok | Den Helder in March |
| April | 12° / 6° | 3 | 27 | 1 | 29 mm | Ok | Den Helder in April |
| May | 15° / 9° | 5 | 26 | 0 | 52 mm | Good | Den Helder in May |
| June | 18° / 13° | 4 | 26 | 0 | 65 mm | Good | Den Helder in June |
| July | 20° / 15° | 5 | 26 | 0 | 85 mm | Good | Den Helder in July |
| August | 20° / 16° | 6 | 25 | 0 | 92 mm | Good | Den Helder in August |
| September | 18° / 13° | 4 | 26 | 0 | 69 mm | Good | Den Helder in September |
| October | 14° / 10° | 5 | 26 | 0 | 71 mm | Good | Den Helder in October |
| November | 10° / 7° | 6 | 23 | 1 | 65 mm | Ok | Den Helder in November |
| December | 7° / 5° | 8 | 20 | 3 | 68 mm | Awful | Den Helder in December |