Mild
Average highs are around 22°C, so days are mild rather than hot.
September verdict
Nantes, France in September
Weather score47Mixed
Mixed for holiday weather
Average highs are around 22°C, so days are mild rather than hot. Sunshine averages 6.2h per day, enough for a balanced month. Rainfall averages 62mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
22°C
Rain
62mm
Sun
6.2h
Sea
17°C
Weather score
47
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 62mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.2h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Nantes, France with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September22°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September62mm average rain
September sits near Nantes' yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.2 hours average sun
September sits close to Nantes' yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September17°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJune to September
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
September47 weather score
September scores above Nantes' yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.