Nantes Weather in September
Nantes in September sees high temperatures, with highs around 23°C (73°F) and overnight lows of 12°C (54°F). Overall perfect conditions make it one of the better months to visit.
Rainfall in Nantes in September
Climate statistics over the past 30 years suggest around 12 days of rain, with 55 mm (2.2 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Nantes in September
Nantes has perfect weather in September, with days reaching 23°C (73°F) and nights cooling to 12°C (54°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Nantes in September
The month enjoys around 195 hours of sunshine, creating mostly sunny days with good weather conditions.If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Nantes.
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 Nantes's climate page.
Nantes Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
23°C (73°F)
Chance of Rain
41%
Precipitation
55 mm (2.2 in)
Rainy days
12 days
Humidity
80%
Sunshine
195 hours
Percentage Sunshine
51%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Nantes typically drop from around 24°C (75°F) at the start of September to approximately 20°C (68°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 13°C (55°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 Nantes in September
Browse day-by-day weather records for Nantes spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nantes historical weather extremes in September
Based on weather observations in Nantes between 1976 and 2025, these are the recorded extremes during September.
- The warmest day in September was on September 4, 2023, with a maximum of 35°C (95°F).
- On September 17, 1986, Nantes saw its coldest September day with temperatures maxing out at 11°C (52°F).
- Nantes registered its coldest September night on September 29, 2007, with temperatures dropping to 3°C (37°F).
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 Nantes in September
For Nantes in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Nantes 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 Nantes's climate page.
Temperature Rainfall Sunshine Humidity
See the full Nantes climate overview or explore weather in France.
