St. Moritz weather in May
May in St. Moritz: cold, soaked, with clean air — an excellent time to visit.
#3 of 12 months in St. Moritz · #164 of 604 destinations to visit in May · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
St. Moritz climate normals — May
| Daytime high | 9°C / 47°F | 🧥 cold |
|---|---|---|
| Nighttime low | 1°C / 34°F | |
| Feels like (high) | 7°C / 45°F | |
| Rainfall | 158 mm / 6.2 in | ⛈ soaked |
| Rainy days | 21 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 4°C / 40°F | |
| Sunshine | 10.2 h/day | |
| Daylight | 15 h | |
| Wind | 9 km/h / 6 mph | |
| Snowfall | 53.9 cm / 21.2 in | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is St. Moritz?
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St. Moritz in May — FAQ
- Is May a good time to visit St. Moritz?
- May in St. Moritz: cold, soaked, with clean air — an excellent time to visit. It ranks #3 of 12 months for St. Moritz on SeasonMap's comfort score (87/100).
- What is the weather like in St. Moritz in May?
- In May, St. Moritz averages a daily high of 8.5°C and a low of 1.1°C, with about 157.7 mm of rain over roughly 21 rainy days.
- What is the air quality in St. Moritz in May?
- St. Moritz has a mean US Air Quality Index of about 47 in May.
- Does it snow in St. Moritz in May?
- St. Moritz sees roughly 53.9 cm of snowfall in May.