Click on a day for an hourly weather forecast
The temperatures in Helgoland in May are usually low and can range between 10°C and 12°C.
You can expect about 3 to 8 days of rain in Helgoland during the month of May. 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 Helgoland in May 2026.
If you’re planning to visit Helgoland in the near future, we highly recommend that you review the 14 day weather forecast for Helgoland before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 3° | 9 | 17 | 5 | 98 mm | Awful | Helgoland in January |
| February | 4° / 2° | 7 | 16 | 5 | 77 mm | Awful | Helgoland in February |
| March | 6° / 4° | 6 | 23 | 2 | 65 mm | Awful | Helgoland in March |
| April | 9° / 6° | 5 | 24 | 0 | 58 mm | Ok | Helgoland in April |
| May | 12° / 10° | 6 | 25 | 0 | 78 mm | Ok | Helgoland in May |
| June | 16° / 13° | 7 | 23 | 0 | 115 mm | Ok | Helgoland in June |
| July | 18° / 16° | 7 | 24 | 0 | 120 mm | Ok | Helgoland in July |
| August | 19° / 17° | 8 | 23 | 0 | 169 mm | Ok | Helgoland in August |
| September | 17° / 15° | 8 | 22 | 0 | 141 mm | Ok | Helgoland in September |
| October | 13° / 11° | 8 | 23 | 0 | 144 mm | Bad | Helgoland in October |
| November | 10° / 8° | 9 | 21 | 1 | 119 mm | Bad | Helgoland in November |
| December | 7° / 5° | 10 | 18 | 3 | 121 mm | Awful | Helgoland in December |