Is Saint-Nazaire hot in September?
Days are typically mild at 22.4°C, while nights average 11.8°C.
France · 1991–2020 normal
Saint-Nazaire in
September.
Typical September weather in Saint-Nazaire: 22.4°C by day, 11.8°C at night, 60 mm of rain over 7.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high22.4°C
Typical low11.8°C
Rain60 mm
Wet days7.8
In the year-round weather comparison, September scores 81 out of 100 (July leads the year at 90). Daylight is calculated as 12 h 30 from latitude 47.28°. Open-water sea temperature is 17.4°C (18 km from the place centre).
September at a glance
What is Saint-Nazaire like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 60 mm across about 8 wet days.
How much daylight is there?
There are about 12 h 30 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 4 of 12 in our weather comparison; July ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 2977921
- NOAA station
- FRM00007222 · NANTES-BOUGUENAIS
- Station distance
- 48.1 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Saint-Nazaire is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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