Click on a day for an hourly weather forecast
The temperatures in Heilbronn 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 Heilbronn. 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 Heilbronn in May 2025.
If you’re planning to visit Heilbronn in the near future, we highly recommend that you review the 14 day weather forecast for Heilbronn before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -1° | 6 | 14 | 11 | 74 mm | Awful | Heilbronn in January |
| February | 6° / 0° | 6 | 14 | 9 | 68 mm | Awful | Heilbronn in February |
| March | 11° / 3° | 6 | 21 | 4 | 55 mm | Bad | Heilbronn in March |
| April | 16° / 6° | 5 | 24 | 1 | 48 mm | Good | Heilbronn in April |
| May | 19° / 8° | 8 | 23 | 0 | 115 mm | Ok | Heilbronn in May |
| June | 23° / 12° | 6 | 24 | 0 | 102 mm | Perfect | Heilbronn in June |
| July | 25° / 14° | 5 | 26 | 0 | 105 mm | Perfect | Heilbronn in July |
| August | 25° / 15° | 5 | 26 | 0 | 76 mm | Perfect | Heilbronn in August |
| September | 21° / 11° | 4 | 26 | 0 | 54 mm | Good | Heilbronn in September |
| October | 15° / 7° | 5 | 26 | 0 | 57 mm | Good | Heilbronn in October |
| November | 10° / 4° | 6 | 21 | 3 | 70 mm | Bad | Heilbronn in November |
| December | 6° / 1° | 9 | 15 | 7 | 89 mm | Awful | Heilbronn in December |