Cool
Average highs are around 19°C, so pack for cooler days.
May verdict
Slovenia in May
Weather score40Poor
Poor for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 7.2h per day, enough for a balanced month. Rainfall averages 117mm, so some wet days are possible.
May weather
Monthly averages
Temp
19°C
Rain
117mm
Sun
7.2h
Sea
7°C
Weather score
40
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 117mm, so some wet days are possible.
Some sun
Sunshine averages 7.2h per day, enough for a balanced month.
Cool sea
Sea temperatures average 7°C, so the water can feel cool.
Map
Weather map
Compare Slovenia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May19°C average high
May 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
May117mm average rain
May sits near Slovenia's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to March and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May7.2 hours average sun
May is brighter than Slovenia's 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
May7°C average sea
May is close to Slovenia's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJune to September
Sea temperatures are usually near 9°C in this stretch, so swimming comfort is at its strongest.
Weather score
May40 weather score
May sits close to Slovenia's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
