St. Moritz Weather in May
May in St. Moritz averages 8°C (46°F) during the day and -1°C (30°F) at night. Quite a bit of snow/rainfall is typical this month, with around 131 mm (5.2 in) on average. An umbrella is a good idea.
Rainfall in St. Moritz in May
Analyzing past climate data, one can expect approximately 20 days of snow/rain, averaging 131 mm (5.2 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in St. Moritz in May
In May, St. Moritz sees low temperatures, with highs of 8°C (46°F). Nights drop to around -1°C (30°F). The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights drop below freezing to -1°C (30°F). An extra blanket is worth packing if you're unsure about the heating where you're staying.
Sunshine in St. Moritz in May
The area experiences a moderate amount of sunshine, with approximately 166 hours of sunlight expected. This means a decent mix of sun and overcast.May in St. Moritz can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our St. Moritz's climate page.
St. Moritz Temperature in May
Min Temperature
-1°C (30°F)
Max Temperature
8°C (46°F)
Chance of Rain
66%
Precipitation
131 mm (5.2 in)
Rainy days
20 days
Humidity
70% *
Sunshine
166 hours *
Percentage Sunshine
48% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in St. Moritz typically rise from around 9°C (48°F) at the start of May to approximately 12°C (54°F) by the end. Nights are cold, with lows typically ranging from -1°C (30°F) to 2°C (36°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for St. Moritz in May
Browse day-by-day weather records for St. Moritz spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
St. Moritz historical weather extremes in May
Based on weather observations in St. Moritz between 1976 and 2026, these are the recorded extremes during May.
- The warmest day in May was on May 25, 1977, with a maximum of 26°C (79°F).
- The lowest daytime temperature in May was -2°C (28°F), recorded on May 5, 2019.
- The lowest overnight temperature recorded in May was -11°C (12°F) (May 7, 2004).
Best Places in Switzerland in May
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in May →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in St. Moritz in May
We recommend to layer up for chilly conditions in St. Moritz in May. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in St. Moritz in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our St. Moritz's climate page.
Temperature Rainfall Sunshine Humidity
See the full St. Moritz climate overview or explore weather in Switzerland.
