Click on a day for an hourly weather forecast
The temperatures in Achern in May are quite cold with temperatures between 8°C and 19°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Achern. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Achern in May 2026.
If you’re planning to visit Achern in the near future, we highly recommend that you review the 14 day weather forecast for Achern before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -2° | 9 | 11 | 11 | 119 mm | Awful | Achern in January |
| February | 6° / -1° | 9 | 12 | 8 | 97 mm | Awful | Achern in February |
| March | 11° / 2° | 7 | 20 | 4 | 76 mm | Awful | Achern in March |
| April | 16° / 5° | 5 | 23 | 2 | 62 mm | Ok | Achern in April |
| May | 19° / 8° | 9 | 22 | 0 | 136 mm | Ok | Achern in May |
| June | 23° / 12° | 7 | 24 | 0 | 110 mm | Good | Achern in June |
| July | 25° / 14° | 6 | 25 | 0 | 127 mm | Perfect | Achern in July |
| August | 25° / 14° | 5 | 26 | 0 | 84 mm | Perfect | Achern in August |
| September | 21° / 11° | 3 | 27 | 0 | 56 mm | Good | Achern in September |
| October | 15° / 6° | 5 | 26 | 0 | 66 mm | Good | Achern in October |
| November | 10° / 3° | 7 | 21 | 2 | 85 mm | Awful | Achern in November |
| December | 6° / 0° | 11 | 13 | 7 | 126 mm | Awful | Achern in December |