Switzerland weather in September
Switzerland in September averages 15°C (59°F), 87 mm of rain and 5.3 hours of sun a day.
Of the twelve months in Switzerland, September is the fourth warmest, the fifth wettest and the sixth sunniest.
- Average temp
- 15°C (59°F)
11–19°C · 51–66°F
- Rainfall
- 87 mm
Showers likely
- Sunshine
- 5.3 h
hours per day
What is Switzerland like in September?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Switzerland in September?
A light rain jacket
About 87 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 11°C (51°F).
September compared with August and October
September in Switzerland is 4.2°C cooler than August and 32 mm drier than it, which averages 19°C (67°F).
September in Switzerland is 4.6°C warmer than October and about as wet as it, which averages 10°C (51°F).
Daylight in Switzerland in September
On 15 September the sun is up for 12 hours 33 minutes in Switzerland, rising about 07:05 and setting about 19:38 local time.
September ends 1 hour 36 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 3 hours 18 minutes short of June, the longest-lit month here.
Travel guides for Switzerland
What to read before you book.
Switzerland weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 1°C / 34°F | 62 mm |
| February | 2°C / 36°F | 60 mm |
| March | 6°C / 43°F | 71 mm |
| April | 10°C / 50°F | 80 mm |
| May | 14°C / 57°F | 126 mm |
| June | 18°C / 64°F | 128 mm |
| July | 19°C / 67°F | 126 mm |
| August | 19°C / 67°F | 119 mm |
| September | 15°C / 59°F | 87 mm |
| October | 10°C / 51°F | 85 mm |
| November | 5°C / 41°F | 76 mm |
| December | 2°C / 35°F | 84 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Switzerland in September
September climate averages for Switzerland, 1991–2020.
Switzerland averages 15°C (59°F) in September, ranging from about 11°C (51°F) at night to 19°C (66°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 87 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 15°C (59°F) against 10°C (51°F) in October — 4.6°C warmer.
September is 4.2°C cooler than August, and 32 mm drier.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 5.3 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 33 minutes of daylight in mid-September, against 15 hours 51 minutes in June and 8 hours 33 minutes in December.
On 15 September, sunrise is about 07:05 and sunset about 19:38 local time. Both shift across the month — the month ends 1 hour 36 minutes shorter than it starts.
