September · France
Best time to visit Grenoble in September Weather, crowds & prices
Weather in Grenoble in September
Average temperature 14°C, 95 mm of rain, about 14 days with 6+ hours of sunshine and 73% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
1.6/10
Ranked #9 of 12 months
- Avg temp
- 14°C
- Rainfall
- 95 mm
- Humidity
- 73%
- Days with 6h+ sun
- 14
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Grenoble scores 1.6/10 for snow and ski travel - ranked #9 of 12. Expect around 14°C, 95 mm of rain, and roughly 14 days with 6+ hours of sunshine this month.
Grenoble sits at the confluence of two rivers beneath the Alps, with cable cars and ski resorts around it.
September in Grenoble — the hardest end of the year
September averages 14°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 95 mm, so plan one flexible day in three; you still get about 14 days with 6+ hours of sunshine and 12.3 hours of daylight.
It scores 1.6/10 here, 9th of 12 months, against 7.4/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Plan for low-season pricing, with crowds are light for this destination.
Flexible dates? January scores 5.8 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Grenoble in September?
- In September, Grenoble averages 14°C, 95 mm of rain, and about 14 days with 6+ hours of sunshine. Its climate-comfort score is 1.6/10.
- Is September a good time to visit Grenoble?
- September earns a 1.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Grenoble in September?
- Expect about 95 mm of rain in September. Average humidity is 73% and there are about 14 days with 6+ hours of sunshine.
Curated in Grenoble
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Grenoble, France. Live activities and tours from GetYourGuide, matched to this destination.