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The temperatures in Wilhelmshaven in April are quite cold with temperatures between 5°C and 12°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Wilhelmshaven during the month of April. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Wilhelmshaven can expect a few days of snow in April.
Our weather forecast can give you a great sense of what weather to expect in Wilhelmshaven in April 2026.
If you’re planning to visit Wilhelmshaven in the near future, we highly recommend that you review the 14 day weather forecast for Wilhelmshaven before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 1° | 9 | 14 | 8 | 90 mm | Awful | Wilhelmshaven in January |
| February | 5° / 1° | 7 | 14 | 7 | 72 mm | Awful | Wilhelmshaven in February |
| March | 8° / 2° | 7 | 21 | 3 | 70 mm | Awful | Wilhelmshaven in March |
| April | 12° / 5° | 5 | 24 | 1 | 55 mm | Ok | Wilhelmshaven in April |
| May | 15° / 8° | 6 | 25 | 0 | 87 mm | Good | Wilhelmshaven in May |
| June | 19° / 11° | 7 | 23 | 0 | 121 mm | Ok | Wilhelmshaven in June |
| July | 21° / 14° | 7 | 24 | 0 | 114 mm | Ok | Wilhelmshaven in July |
| August | 21° / 14° | 7 | 24 | 0 | 110 mm | Ok | Wilhelmshaven in August |
| September | 18° / 12° | 5 | 25 | 0 | 74 mm | Good | Wilhelmshaven in September |
| October | 14° / 8° | 7 | 24 | 0 | 83 mm | Ok | Wilhelmshaven in October |
| November | 9° / 5° | 6 | 22 | 1 | 76 mm | Ok | Wilhelmshaven in November |
| December | 6° / 2° | 10 | 16 | 5 | 91 mm | Awful | Wilhelmshaven in December |