Click on a day for an hourly weather forecast
The weather in St. Moritz in May is very cold with temperatures between -3°C and 8°C, warm clothes are a must.
There’s going to be many days of rain during the month of May in St. Moritz.
St. Moritz should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
St. Moritz is going to experience quite a number of days of snow during May. It’s the perfect time to build snowmen, drink hot cocoa, and have a snowball fight. Just remember to wear a warm scarf and a pair of mittens!
Our weather forecast can give you a great sense of what weather to expect in St. Moritz in May 2026.
If you’re planning to visit St. Moritz in the near future, we highly recommend that you review the 14 day weather forecast for St. Moritz before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -16° | 4 | 8 | 20 | 67 mm | Awful | St. Moritz in January |
| February | -2° / -15° | 4 | 6 | 20 | 84 mm | Awful | St. Moritz in February |
| March | 0° / -12° | 8 | 3 | 22 | 88 mm | Awful | St. Moritz in March |
| April | 4° / -7° | 11 | 4 | 18 | 152 mm | Awful | St. Moritz in April |
| May | 8° / -3° | 18 | 5 | 10 | 180 mm | Awful | St. Moritz in May |
| June | 14° / 2° | 18 | 11 | 1 | 184 mm | Ok | St. Moritz in June |
| July | 17° / 4° | 18 | 12 | 0 | 198 mm | Ok | St. Moritz in July |
| August | 17° / 3° | 17 | 14 | 0 | 186 mm | Ok | St. Moritz in August |
| September | 13° / 0° | 12 | 16 | 2 | 123 mm | Awful | St. Moritz in September |
| October | 7° / -4° | 7 | 16 | 8 | 136 mm | Awful | St. Moritz in October |
| November | 2° / -9° | 7 | 8 | 17 | 158 mm | Awful | St. Moritz in November |
| December | -3° / -14° | 3 | 10 | 18 | 91 mm | Awful | St. Moritz in December |