Generally, the weather in St Moritz all through the month of May is 2. Through the month the highs are about 6 with low daily temperautes being -5. The table below has some further insights:
| Month | Degrees Celsius |
|---|---|
| Temperature | 2 |
| High Temperature | 6 |
| Low Temperature | -5 |
| Sunshine Per Day | 7 |
Useful Links: St Moritz Weather: Average Weather & Yearly Climate