Cool
Average highs are around 18°C, so pack for cooler days.
May verdict
International Waters in May
Weather score46Mixed
Mixed for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 54mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
18°C
Rain
54mm
Sun
5.8h
Sea
0°C
Weather score
46
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 54mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 0°C, so the water can feel cool.
Map
Weather map
Compare International Waters with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May18°C average high
May is close to International Waters' yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
May54mm average rain
May sits on the drier side of International Waters' year, which helps with sightseeing and transfers.
Driest monthsMay to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May5.8 hours average sun
May is brighter than International Waters' yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJuly to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May0°C average sea
May is close to International Waters' usual sea temperature, with limited seasonal change in the water.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
Weather score
May46 weather score
May sits close to International Waters' yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.