Click on a day for an hourly weather forecast
The temperatures in Winterthur in May are quite cold with temperatures between 6°C and 19°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Winterthur. 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 Winterthur in May 2025.
If you’re planning to visit Winterthur in the near future, we highly recommend that you review the 14 day weather forecast for Winterthur before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -4° | 7 | 11 | 13 | 141 mm | Awful | Winterthur in January |
| February | 5° / -3° | 8 | 10 | 12 | 110 mm | Awful | Winterthur in February |
| March | 10° / 0° | 7 | 16 | 7 | 102 mm | Awful | Winterthur in March |
| April | 16° / 3° | 6 | 22 | 2 | 91 mm | Ok | Winterthur in April |
| May | 19° / 6° | 9 | 22 | 0 | 166 mm | Ok | Winterthur in May |
| June | 23° / 10° | 9 | 21 | 0 | 168 mm | Good | Winterthur in June |
| July | 25° / 12° | 8 | 23 | 0 | 156 mm | Good | Winterthur in July |
| August | 25° / 12° | 6 | 25 | 0 | 121 mm | Perfect | Winterthur in August |
| September | 21° / 9° | 4 | 26 | 0 | 79 mm | Good | Winterthur in September |
| October | 15° / 5° | 6 | 25 | 0 | 91 mm | Good | Winterthur in October |
| November | 9° / 1° | 7 | 19 | 5 | 104 mm | Awful | Winterthur in November |
| December | 5° / -2° | 9 | 13 | 10 | 153 mm | Awful | Winterthur in December |