Verdict: Fair month
St. Moritz Weather in May
May is properly cold in St. Moritz, with highs of only 8°C (46°F). Expect showers on roughly 14 days of the month — rarely trip-ruining, worth planning around. May is workable in St. Moritz if your dates are fixed — just plan around the conditions.
Average high
8°C / 46°F
Average low
0°C / 32°F
Rain days
~14
Precipitation
100 mm
What to pack for St. Moritz in May
- A proper warm jacket, and a hat for mornings
- Rain gear is non-negotiable — expect rain on roughly 14 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
May against the rest of the year
Warmest in St. Moritz: Jul (17°C / 63°F) · Coolest: Jan (-2°C / 28°F) · Wettest: May (~14 rain days)
-2°
-11°
Jan
1°
-8°
Feb
1°
-8°
Mar
4°
-5°
Apr
8°
0°
May
14°
4°
Jun
17°
7°
Jul
17°
6°
Aug
12°
3°
Sep
8°
0°
Oct
3°
-6°
Nov
-1°
-9°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)