September · France
Best time to visit Annecy in September Weather, crowds & prices
Weather in Annecy in September
Average temperature 17°C, 149 mm of rain, about 24 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.1/10
Ranked #5 of 12 months
- Avg temp
- 17°C
- Rainfall
- 149 mm
- Humidity
- 80%
- Days with 6h+ sun
- 24
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Annecy scores 7.1/10 for sightseeing and cultural travel - an above-average month (#5 of 12). Expect around 17°C, 149 mm of rain, and roughly 24 days with 6+ hours of sunshine this month.
Annecy's canal-laced old town sits at the head of one of Europe's cleanest alpine lakes.
September in Annecy: strong conditions, 5th of 12
September averages 17°C (62°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Monthly rainfall reaches 149 mm — wet for this destination — but about 24 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 7.1/10 here, 5th of 12 months, against 8.8/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Figure on mid-season pricing, with crowds are moderate.
Flexible dates? August scores 1.7 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Annecy in September?
- In September, Annecy averages 17°C, 149 mm of rain, and about 24 days with 6+ hours of sunshine. Its climate-comfort score is 7.1/10.
- Is September a good time to visit Annecy?
- September earns a 7.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Annecy in September?
- Expect about 149 mm of rain in September. Average humidity is 80% and there are about 24 days with 6+ hours of sunshine.
Curated in Annecy
Tickets & experiences
Things to do in Annecy
Annecy, France. Live activities and tours from GetYourGuide, matched to this destination.