Montreux Weather in September
During September, Montreux experiences pleasant daytime temperatures of 18°C (64°F) and cooler nights around 9°C (48°F). Expect quite a bit of rainfall. Around 134 mm (5.3 in) is typical.
Rainfall in Montreux in September
Past climate data indicates that roughly 13 days will see rain, totalling around 134 mm (5.3 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Montreux in September
September in Montreux brings typical temperatures with highs around 18°C (64°F) and lows of 9°C (48°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Montreux in September
The area enjoys a moderate level of sunlight, with around 185 hours. It's a good balance between sunny and cloudy days.Should you favor a climate that's both dry and comfortably warm, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Montreux's climate page.
Montreux Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
18°C (64°F)
Chance of Rain
43%
Precipitation
134 mm (5.3 in)
Rainy days
13 days
Humidity
73% *
Sunshine
185 hours *
Percentage Sunshine
52% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Montreux typically drop from around 20°C (68°F) at the start of September to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°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 Montreux in September
Browse day-by-day weather records for Montreux spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Montreux historical weather extremes in September
The extremes listed below come from historical weather data collected in Montreux from 1976 through 2025.
- The warmest day in September was on September 13, 1987, with a maximum of 30°C (86°F).
- Montreux experienced its chilliest September day on September 25, 2002, reaching only 6°C (43°F).
- Montreux registered its coldest September night on September 25, 2002, with temperatures dropping to -1°C (30°F).
- Peak precipitation in September occurred on September 26, 2024, when 44 mm (1.7 in) of precipitation was measured.
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
pleasant
tolerable
unpleasant
poor
What to Wear in Montreux in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Montreux 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 Montreux's climate page.
Temperature Rainfall Sunshine Humidity
See the full Montreux climate overview or explore weather in Switzerland.
