Ljubljana features a continental climate with four distinct seasons. Winters are cold and often snowy, while summers are warm and can be humid, with occasional heatwaves. The city receives abundant rainfall, especially in autumn, and experiences dramatic shifts in daylight between seasons. These conditions make Ljubljana a dynamic destination for travellers year-round.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Ljubljana’s climate is shaped by its central European location and proximity to both the Alps and the Adriatic Sea. Winters (December–February) are cold and cloudy, with average highs of 3–4°C and lows around -2°C. Snowfall is common, especially in January and February, and fog often lingers in the basin. Daylight is limited, and humidity is high, making the cold feel sharper. The city’s festive atmosphere, with Christmas markets and decorated streets, adds charm to the winter months.
Spring (March–May) brings milder weather, with temperatures rising from 5°C in March to 21°C by May. Rain is frequent, but sunshine increases, and parks bloom with flowers. Summers (June–August) are warm and humid, with average highs of 25–28°C, though heatwaves can push temperatures above 35°C. Thunderstorms are common in the afternoons, and the city enjoys up to 10 hours of sunshine per day. Autumn (September–November) is mild and wet, with temperatures dropping from 21°C in September to 9°C in November. Rainfall peaks in September and October, and colourful foliage fills the parks. Annual precipitation is high, averaging 1,200–1,400 mm, making Ljubljana one of Europe’s rainiest capitals. Winds are generally light, but stronger gusts can occur during storms, especially in autumn and winter. Daylight ranges from over 15 hours in June to just over 8 hours in December.
| Average climate data for Ljubljana, Slovenia | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 3 | 6 | 11 | 16 | 21 | 24 | 27 | 27 | 22 | 16 | 9 | 4 | 27 |
| Average minimum temperature (°C) | -2 | -2 | 2 | 6 | 10 | 14 | 16 | 15 | 11 | 8 | 3 | -1 | -2 |
| Average precipitation (mm) | 68 | 69 | 88 | 99 | 109 | 143 | 115 | 136 | 148 | 149 | 130 | 107 | 1,362 |
| Average rainfall days (days) | 11 | 9 | 11 | 14 | 14 | 15 | 12 | 12 | 12 | 13 | 14 | 14 | 151 |
| Average daily daylight hours (h) | 9 | 10 | 11 | 13 | 15 | 15 | 15 | 14 | 12 | 10 | 9 | 8 | 12 |
| Average daily sunshine hours (h) | 2 | 4 | 4 | 5 | 7 | 8 | 9 | 8 | 6 | 3 | 2 | 1 | 5 |
| Average UV index | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 1 | 1 | 4 |
The best times to visit Ljubljana are late spring (May–June) and early autumn (September), when temperatures are mild (18–25°C), the city is lively with outdoor events, and rainfall is moderate. These seasons offer ideal weather for sightseeing, festivals, and enjoying Ljubljana’s parks and riverside cafés, with fewer crowds than the peak summer months.
The least favourable time to visit is late autumn and winter (November–February), when temperatures are cold, days are short, and rain or snow is frequent. While the city’s holiday lights and markets add charm, outdoor activities can be less comfortable due to dampness, fog, and chilly conditions.
Ljubljana has a continental climate with cold, snowy winters and warm, sometimes humid summers. Rain falls year-round, peaking in autumn, while spring and early autumn offer mild, pleasant weather.
Summer temperatures in Ljubljana typically reach 25–28°C, with occasional heatwaves pushing highs above 35°C. Nights are cooler, and afternoon thunderstorms are common, especially in July and August.
Yes, snowfall is common in Ljubljana from December to February, especially in January. Snow cover can last for several days, creating a picturesque winter atmosphere in the city.
Autumn, especially September and October, is the rainiest period in Ljubljana, with frequent wet days and heavy rainfall. Summer also sees thunderstorms, while winter and spring are slightly drier.
Pack warm, waterproof layers and insulated boots for winter. In spring and autumn, bring layers and a rain jacket. For summer, pack light clothes, sun protection, and an umbrella for sudden showers.
Ljubljana receives about 1,350–1,450 hours of sunshine annually. July is the sunniest month, with up to 10 hours per day, while December is the cloudiest, with only 1–2 hours daily.
Humidity is high year-round, especially in winter and autumn. Winds are generally light, but stronger gusts can occur during storms, particularly in autumn and winter.
The warmest month, with the highest average maximum temperature, is July (27.3 °C). The month with the lowest average maximum temperature is January (3.3 °C). Overall, the average maximum temperature over the whole year is 15.6 °C.
The month with the highest average minimum temperature is July (15.6 °C). The coldest month, with the lowest average minimum temperature, is January (-2.4 °C). Overall, the average minimum temperature over the whole year is 6.6 °C.
The wettest month, with the highest amount of precipitation, is October (149.2 mm). The driest month, with the least amount of precipitation, is January (68.5 mm). Over the whole year there are 1,361.9 mm of rainfall on average.
The month with the most days of rain is June (14.9 days). The month with the fewest days of rain is February (9.1 days). Over the whole year there are 150.9 days of rain on average.
The month with the longest days, so the most daylight, is June (Average daylight: 15.1 h). The month with the shortest days, so the least daylight, is December (Average daylight: 8.1 h). Over the whole year there are 11.8 h of daylight per day on average.
The month with the most sunshine per day is July (Average sunshine: 9 h). The month with the least sunshine per day is December (Average sunshine: 1.2 h). Over the whole year there are 5 h of sunlight per day on average.
The months with the highest average UV index are June and July (UV index: 8). The months with the lowest average UV index are January, November and December (UV index: 1). Over the whole year the average UV index is 4.2.
