Cool
Average highs are around 18°C, so pack for cooler days.
May verdict
Rennes, France in May
Weather score35Poor
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 63mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
18°C
Rain
63mm
Sun
6.8h
Sea
13°C
Weather score
35
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 63mm, 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 13°C, so the water can feel cool.
Map
Weather map
Compare Rennes, France with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May18°C average high
May is close to Rennes' yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
May63mm average rain
May is wetter than Rennes' yearly average, so flexible plans matter more.
Driest monthsJanuary to October and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May6.8 hours average sun
May is brighter than Rennes' yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May13°C average sea
May is close to Rennes' yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
Weather score
May35 weather score
May sits close to Rennes' 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.