Ljubljana, Slovenia Climate & Monthly Averages
The climate of Ljubljana
Located in Slovenia, Ljubljana experiences a oceanic climate with mild temperatures year-round with regular rainfall. Afternoon temperatures peak near 82°F (28°C) in July and dip to about 41°F (5°C) in January, with around 48.3 inches (1228 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: July - highs near 82°F (28°C)
- Coldest month: January - highs near 41°F (5°C)
- Record high: 99°F (37°C) · Record low: -3°F (-19°C) (2015–2024)
- Wettest month: September (12 rainy days) · Sunniest: July (12.6 h sun/day)
- Climate type: oceanic - mild temperatures year-round with regular rainfall
- Snow: about 12 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 82°F (28°C) and overnight lows stay near 61°F (16°C). The coolest month is January, with typical highs of 41°F (5°C) and lows around 26°F (-3°C). Based on 2015–2024 weather data, temperatures have reached as high as 99°F (37°C) and dropped as low as -3°F (-19°C).
Rain, sun and snow
September is usually the wettest month. It brings about 5.7 inches (144 mm) of rain over 12 days, while March is the driest. July brings the most sunshine, averaging 12.6 hours of sun a day. Snow falls on about 12 days in a typical year, mostly from November through March.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 41° | 26° | 8 | 3.2 in | 5.1 h/day | 83% |
| February | 47° | 29° | 9 | 3.4 in | 6.0 h/day | 80% |
| March | 53° | 33° | 10 | 2.8 in | 8.2 h/day | 73% |
| April | 61° | 40° | 9 | 3.2 in | 9.8 h/day | 72% |
| May | 67° | 49° | 16 | 5.6 in | 10.1 h/day | 77% |
| June | 77° | 58° | 12 | 3.5 in | 12.3 h/day | 74% |
| July | 82° | 61° | 11 | 3.6 in | 12.6 h/day | 71% |
| August | 81° | 61° | 9 | 3.6 in | 11.6 h/day | 73% |
| September | 71° | 53° | 12 | 5.7 in | 9.3 h/day | 79% |
| October | 62° | 45° | 10 | 4.7 in | 7.1 h/day | 84% |
| November | 50° | 37° | 10 | 5.1 in | 4.7 h/day | 86% |
| December | 42° | 29° | 8 | 3.8 in | 4.4 h/day | 87% |
Ljubljana month by month
Ljubljana weather in January
January brings highs around 41°F (5°C), lows near 26°F (-3°C), about 8 wet days and roughly 3 snowy days - typically the coldest month of the year in Ljubljana.
Ljubljana weather in February
February brings highs around 47°F (8°C), lows near 29°F (-2°C), about 9 wet days and roughly 3 snowy days.
Ljubljana weather in March
March brings highs around 53°F (12°C), lows near 33°F (1°C), about 10 wet days and roughly 2 snowy days - typically the driest month of the year in Ljubljana.
Ljubljana weather in April
April brings highs around 61°F (16°C), lows near 40°F (4°C), about 9 wet days.
Ljubljana weather in May
May brings highs around 67°F (19°C), lows near 49°F (9°C), about 16 wet days.
Ljubljana weather in June
June brings highs around 77°F (25°C), lows near 58°F (14°C), about 12 wet days.
Ljubljana weather in July
July brings highs around 82°F (28°C), lows near 61°F (16°C), about 11 wet days - typically the hottest month and the sunniest month of the year in Ljubljana.
Ljubljana weather in August
August brings highs around 81°F (27°C), lows near 61°F (16°C), about 9 wet days.
Ljubljana weather in September
September brings highs around 71°F (22°C), lows near 53°F (12°C), about 12 wet days - typically the wettest month of the year in Ljubljana.
Ljubljana weather in October
October brings highs around 62°F (17°C), lows near 45°F (7°C), about 10 wet days.
Ljubljana weather in November
November brings highs around 50°F (10°C), lows near 37°F (3°C), about 10 wet days and roughly 2 snowy days.
Ljubljana weather in December
December brings highs around 42°F (6°C), lows near 29°F (-2°C), about 8 wet days and roughly 3 snowy days.
Seasons in Ljubljana
Spring (March through May)
Spring in Ljubljana is crisp but comfortable, with daytime highs averaging 60°F (16°C) and nights around 41°F (5°C); expect showers on roughly 35 days across the season.
Summer (June through August)
Summer in Ljubljana brings comfortable warmth, with daytime highs averaging 80°F (27°C) and nights around 60°F (15°C); expect showers on roughly 33 days across the season.
Fall (September through November)
Fall in Ljubljana is crisp but comfortable, with daytime highs averaging 61°F (16°C) and nights around 45°F (7°C); expect showers on roughly 33 days across the season.
Winter (December through February)
Winter in Ljubljana runs cold, with daytime highs averaging 43°F (6°C) and nights around 28°F (-2°C); expect showers on roughly 26 days across the season, plus around 8 snowy days.
Climate questions, answered
What is the average temperature in Ljubljana?
Is Ljubljana hot in summer?
Is Ljubljana cold in winter?
How many rainy days does Ljubljana get in a year?
Best time to visit Ljubljana
The best time to visit Ljubljana is generally July to August and April, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 71°F (22°C).
Pack for Ljubljana with a warm jacket and layers for the cooler season; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - July nights average 61°F (16°C).
Ljubljana temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.