Click on a day for an hourly weather forecast
The temperatures in Grenaa in September are usually low and can range between 13°C and 16°C.
You can expect about 3 to 8 days of rain in Grenaa 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 Grenaa in September 2026.
If you’re planning to visit Grenaa in the near future, we highly recommend that you review the 14 day weather forecast for Grenaa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / 1° | 7 | 14 | 10 | 70 mm | Awful | Grenaa in January |
| February | 3° / 1° | 7 | 12 | 10 | 58 mm | Awful | Grenaa in February |
| March | 6° / 2° | 6 | 22 | 4 | 49 mm | Awful | Grenaa in March |
| April | 9° / 5° | 4 | 25 | 1 | 32 mm | Ok | Grenaa in April |
| May | 13° / 9° | 5 | 26 | 0 | 59 mm | Ok | Grenaa in May |
| June | 17° / 12° | 4 | 26 | 0 | 71 mm | Good | Grenaa in June |
| July | 19° / 15° | 6 | 25 | 0 | 96 mm | Good | Grenaa in July |
| August | 19° / 15° | 6 | 25 | 0 | 94 mm | Good | Grenaa in August |
| September | 16° / 13° | 4 | 26 | 0 | 67 mm | Good | Grenaa in September |
| October | 12° / 10° | 6 | 25 | 0 | 73 mm | Ok | Grenaa in October |
| November | 8° / 6° | 6 | 22 | 2 | 58 mm | Bad | Grenaa in November |
| December | 5° / 3° | 8 | 17 | 6 | 68 mm | Awful | Grenaa in December |