Click on a day for an hourly weather forecast
The temperatures in Ulm in May are quite cold with temperatures between 6°C and 17°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Ulm. 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 Ulm in May 2025.
If you’re planning to visit Ulm in the near future, we highly recommend that you review the 14 day weather forecast for Ulm before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -3° | 7 | 9 | 16 | 87 mm | Awful | Ulm in January |
| February | 4° / -3° | 6 | 11 | 12 | 67 mm | Awful | Ulm in February |
| March | 9° / 0° | 6 | 17 | 7 | 75 mm | Bad | Ulm in March |
| April | 14° / 3° | 7 | 20 | 3 | 86 mm | Bad | Ulm in April |
| May | 17° / 6° | 11 | 19 | 0 | 186 mm | Ok | Ulm in May |
| June | 21° / 10° | 11 | 19 | 0 | 201 mm | Ok | Ulm in June |
| July | 23° / 12° | 11 | 20 | 0 | 209 mm | Good | Ulm in July |
| August | 23° / 12° | 10 | 21 | 0 | 178 mm | Good | Ulm in August |
| September | 19° / 9° | 6 | 24 | 0 | 108 mm | Good | Ulm in September |
| October | 14° / 5° | 7 | 24 | 1 | 91 mm | Ok | Ulm in October |
| November | 8° / 2° | 7 | 18 | 5 | 91 mm | Awful | Ulm in November |
| December | 4° / -2° | 9 | 11 | 12 | 102 mm | Awful | Ulm in December |