Cool
Average highs are around 18°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 6.8h per day, enough for a balanced month. Rainfall averages 64mm, which is relatively low for holiday planning.
Monthly averages
Temp
18°C
Rain
64mm
Sun
6.8h
Sea
14°C
Weather score
36
Poor
Cool
Average highs are around 18°C, so pack for cooler days.
Drier
Rainfall averages 64mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Compare Nantes, France with nearby places by weather score, rain, sun, temperature, and swim conditions.
May18°C average high
May is close to Nantes' yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
May64mm average rain
May 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.
May6.8 hours average sun
May is brighter than Nantes' yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
May14°C average sea
May is close to Nantes' yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJune to September
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
May36 weather score
May sits close to Nantes' yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.