Zermatt weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: July
Best for skiing: November – April
What is the weather like in Zermatt in September?
In September, Zermatt is cool: daytime highs average 16 °C, and nights cool down to about 7 °C. Expect around 5 hours of sunshine a day. It rains often – on about 18 days, adding up to 152 mm. Snow falls on about 2 days. All in all, September is a so-so month for a holiday in Zermatt.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 59 | 56 | 33 |
| Day | 20° | 16° | 10° |
| Night | 11° | 7° | 2° |
| Sun | 6 h | 5 h | 4 h |
| Rain days | 22 | 18 | 15 |
More details for September
- Daylight
- 12 h 37 min07:06 – 19:43
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 7 km/haverage daily peak
- Cloud cover
- 61 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 2 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Zurich
How the score comes together
- Temperatureweight 50 %95 %
- Sunshineweight 20 %37 %
- Few rainy daysweight 30 %3 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Zermatt in September: quick answers
Is Zermatt hot in September?
No. In September, Zermatt is cool: daytime highs average 16 °C and nights drop to about 7 °C.
Does it rain much in Zermatt in September?
It rains often – on about 18 days, adding up to 152 mm.
Zermatt month by month
The whole year in ZermattAll destinations: SwitzerlandWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)