Mild
Average highs are around 21°C, so days are mild rather than hot.
September verdict
Ljubljana, Slovenia in September
Weather score43Mixed
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 137mm, so some wet days are possible.
September weather
Monthly averages
Temp
21°C
Rain
137mm
Sun
5.8h
Weather score
43
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 137mm, so some wet days are possible.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Map
Weather map
Compare Ljubljana, Slovenia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September21°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
September137mm average rain
September is wetter than Ljubljana's yearly average, so flexible plans matter more.
Driest monthsJanuary to March and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.8 hours average sun
September sits close to Ljubljana's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September43 weather score
September sits close to Ljubljana'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.
