Zermatt Weather in September
During September, Zermatt experiences low daytime temperatures of 11°C (52°F) and cooler nights around 1°C (34°F). Expect quite a bit of rainfall. Around 161 mm (6.3 in) is typical.
Rainfall in Zermatt in September
Climate statistics over the past 30 years suggest around 16 days of rain, with 161 mm (6.3 in) average for the month. 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 Zermatt in September
September in Zermatt brings typical temperatures with highs around 11°C (52°F) and lows of 1°C (34°F). It stays cool throughout the day, so warm layers are a good idea from morning to evening. With overnight lows of 1°C (34°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Zermatt in September
With about 166 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Zermatt. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Zermatt's climate page.
Zermatt Temperature in September
Min Temperature
1°C (34°F)
Max Temperature
11°C (52°F)
Chance of Rain
52%
Precipitation
161 mm (6.3 in)
Rainy days
16 days
Humidity
70%
Sunshine
166 hours
Percentage Sunshine
69%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Zermatt typically drop from around 18°C (64°F) at the start of September to approximately 15°C (59°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 6°C (43°F).
Average temperatures in September
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 September
Historical weather for Zermatt in September
Browse day-by-day weather records for Zermatt spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Zermatt historical weather extremes in September
Based on 49 years of weather observations in Zermatt between 1976 and 2025, these are the recorded extremes.
- The warmest day in September was on September 7, 2023, with a maximum of 29°C (84°F).
- The coldest September day was on September 2, 2025, with a maximum of 1°C (34°F).
- Zermatt registered its coldest September night on September 29, 1995, with temperatures dropping to -12°C (10°F).
- The wettest September day on record brought 33 mm (1.3 in) of precipitation to Zermatt (September 13, 1997).
Best Places in Switzerland in September
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Zermatt in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Zermatt in September
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 Zermatt's climate page.
Temperature Rainfall Sunshine Humidity
See the full Zermatt climate overview or explore weather in Switzerland.
