Lyon Weather in September
September in Lyon brings high temperatures, with daytime highs of 23°C (73°F) and nights around 12°C (54°F). Quite a bit of rainfall is expected, around 100 mm (3.9 in), so pack an umbrella.
Rainfall in Lyon in September
Based on our climate data of the past 30 years, about 10 days of rain are anticipated, with 100 mm (3.9 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Lyon in September
In September, Lyon sees high temperatures, with highs of 23°C (73°F). Nights drop to around 12°C (54°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Lyon in September
With approximately 195 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July and August typically offer the best weather for Lyon.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit France, check out our Lyon's climate page.
Lyon Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
23°C (73°F)
Chance of Rain
34%
Precipitation
100 mm (3.9 in)
Rainy days
10 days
Humidity
76%
Sunshine
195 hours
Percentage Sunshine
56%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lyon typically drop from around 24°C (75°F) at the start of September to approximately 21°C (70°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 14°C (57°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 Lyon in September
Browse day-by-day weather records for Lyon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lyon historical weather extremes in September
The extremes listed below come from historical weather data collected in Lyon from 1976 through 2025.
- Lyon recorded its highest September temperature of 34°C (93°F) on September 10, 2023.
- The coldest September day was on September 27, 2020, with a maximum of 10°C (50°F).
- The lowest overnight temperature recorded in September was 2°C (36°F) (September 30, 1995).
Best Places in France in September
Find out more about the weather in France and which places have the best travel conditions in this month. See all of France in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Lyon 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Lyon 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 France, check out our Lyon's climate page.
Temperature Rainfall Sunshine Humidity
See the full Lyon climate overview or explore weather in France.
