Early autumn · Weather & things to do
St. Moritz in September
St. Moritz cools off: highs slip to 56°F (13°C), from 63°F in August, with lows of 39°F (4°C) and about 3.9 in (99 mm) of rain.
It scores 68/100 for comfort, 4th of 12, which makes it a solid shoulder-season month.
- Avg high
- 56°F (13°C)
- Avg low
- 39°F (4°C)
- Rain
- 3.9 in (99 mm)
- Humidity
- 81%
- Cloud cover
- 65%
- Daylight
- ~12 h 19 min
- Comfort score
- 68/100 · Good
What September feels like
Highs near 56°F (13°C) make for comfortable sightseeing weather.
Nights cool to an average low of 39°F (4°C).
Showers are part of the month, adding up to about 3.9 in (99 mm).
Plan around September
September is shoulder season: good weather, a step below the best months (July & August).
- Comfort slips from 74/100 in August to 68/100.
- Our Zermatt, Andermatt & St. Moritz route recommends Dec – Mar, so September falls outside its suggested window.
What to pack for September
- A warm layer for eveningsnights drop to 39°F
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in St. Moritz in September
September is good outdoor weather here, so these picks lean toward the open air.
Cresta Run
Natural-ice skeleton run first built in 1885, raced head-first from St. Moritz down toward Celerina.
Why now September scores 68/100 for comfort, good conditions for being outside.
Olympia Bob Run St. Moritz–Celerina
The world's only natural-ice bobsleigh track, rebuilt by hand each winter; guests can ride as passengers behind a pilot.
Why now Highs near 56°F and 3.9 in of monthly rain make this an easy outdoor pick.
Leaning Tower of St. Moritz
The 12th-century bell tower of the vanished St. Mauritius church, leaning about 5.5 degrees above the village.
Segantini Museum
Stone-domed museum devoted to Giovanni Segantini, painter of the Engadine, holding his large Alpine Triptych.
Lake St. Moritz
The lake freezes thick enough to host the Snow Polo World Cup in January and the White Turf horse races in February.
Why now One to do outside while the weather is on your side.
Nearby in September
- Andermatt in September~60 mi · highs 54°F, 4.7 in rain · 1°C (2°F) cooler by day, wetter
- Bolzano in September~72 mi · highs 75°F, 3.5 in rain · 10°C (19°F) warmer by day, about as wet
- Lucerne in September~82 mi · highs 68°F, 4.0 in rain · 7°C (12°F) warmer by day, about as wet
- Füssen in September~84 mi · highs 64°F, 4.7 in rain · 4°C (8°F) warmer by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~2,144 m to St. Moritz's ~1,830 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
St. Moritz in September: quick answers
Is September a good time to visit St. Moritz?
It's a good shoulder-season choice, scoring 68/100 against a best of 78 in July & August. Expect highs of 56°F (13°C) and 3.9 in (99 mm) of rain. Our Zermatt, Andermatt & St. Moritz route recommends Dec – Mar, so September is outside its suggested window.
How cold is St. Moritz in September?
Average highs are 56°F (13°C) and average lows 39°F (4°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in St. Moritz in September?
Some: about 3.9 in (99 mm) of rain falls across September on average, the 6th-wettest month of the year. The annual total is about 44.5 in (1131 mm).
What should I pack for St. Moritz in September?
Bring a warm layer for evenings (nights drop to 39°F), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on St. Moritz
Planning St. Moritz in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.