Ljubljana, Slovenia Climate & Monthly Averages
The climate of Ljubljana
Ljubljana has an oceanic climate. Average highs run from 41°F (5°C) in January to 82°F (28°C) in July, and the city records roughly 127 days of measurable precipitation a year.
Climate quick facts
- Hottest month: July - highs near 82°F (28°C)
- Coldest month: January - highs near 41°F (5°C)
- Decade extremes (2015-2024): 99°F (37°C) high · -3°F (-19°C) low
- Wettest month: September (12 rainy days) · Sunniest: July (12.6 h sun/day)
- Climate type: oceanic
- Annual swing: 21°C between the average warmest and coolest month · day to night: 10°C
- Snow: about 12 days a year
- Months with freezing average lows: 3
- Average humidity: 78%
Temperatures through the year
July is the brightest month at 12.6 hours of sun a day, against an annual average of 8.4. January is the coolest month, with highs of 41°F (5°C) and lows near 26°F (-3°C). July is the warm end of the year, averaging 82°F (28°C) by day and 61°F (16°C) overnight. Snow falls on roughly 12 days a year, mostly November through March.
Rain, sun and snow
Overnight lows average at or below freezing for 3 months, December through February. Precipitation concentrates in September - 5.7 inches (144 mm) on 12 days - and thins out by March. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 99°F (37°C) and the lowest daily minimum -3°F (-19°C).
How Ljubljana compares
- Ljubljana sits close to the middle of our dataset on most measures: 52°F (11°C) as an annual average, 48.3 inches (1228 mm) of precipitation and 8.4 hours of sun a day.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 41° | 26° | 8 | 3.2 in | 5.1 h/day | 9.0 h | 27% | 83% |
| February | 47° | 29° | 9 | 3.4 in | 6.0 h/day | 10.3 h | 33% | 80% |
| March | 53° | 33° | 10 | 2.8 in | 8.2 h/day | 11.8 h | 33% | 73% |
| April | 61° | 40° | 9 | 3.2 in | 9.8 h/day | 13.5 h | 30% | 72% |
| May | 67° | 49° | 16 | 5.6 in | 10.1 h/day | 14.9 h | 51% | 77% |
| June | 77° | 58° | 12 | 3.5 in | 12.3 h/day | 15.7 h | 41% | 74% |
| July | 82° | 61° | 11 | 3.6 in | 12.6 h/day | 15.4 h | 36% | 71% |
| August | 81° | 61° | 9 | 3.6 in | 11.6 h/day | 14.1 h | 30% | 73% |
| September | 71° | 53° | 12 | 5.7 in | 9.3 h/day | 12.5 h | 41% | 79% |
| October | 62° | 45° | 10 | 4.7 in | 7.1 h/day | 10.8 h | 33% | 84% |
| November | 50° | 37° | 10 | 5.1 in | 4.7 h/day | 9.4 h | 34% | 86% |
| December | 42° | 29° | 8 | 3.8 in | 4.4 h/day | 8.7 h | 27% | 87% |
Ljubljana month by month
Average high and low for each month, with the bar showing where it sits in Ljubljana's year (left is the coldest night, right is the warmest afternoon).
January
- Rain
- 8 days
- Sunshine
- 5.1 h
- Daylight
- 9.0 h
- Snow
- 3 days
February
- Rain
- 9 days
- Sunshine
- 6.0 h
- Daylight
- 10.3 h
- Snow
- 3 days
March
- Rain
- 10 days
- Sunshine
- 8.2 h
- Daylight
- 11.8 h
- Snow
- 2 days
April
- Rain
- 9 days
- Sunshine
- 9.8 h
- Daylight
- 13.5 h
May
- Rain
- 16 days
- Sunshine
- 10.1 h
- Daylight
- 14.9 h
June
- Rain
- 12 days
- Sunshine
- 12.3 h
- Daylight
- 15.7 h
July
- Rain
- 11 days
- Sunshine
- 12.6 h
- Daylight
- 15.4 h
August
- Rain
- 9 days
- Sunshine
- 11.6 h
- Daylight
- 14.1 h
September
- Rain
- 12 days
- Sunshine
- 9.3 h
- Daylight
- 12.5 h
October
- Rain
- 10 days
- Sunshine
- 7.1 h
- Daylight
- 10.8 h
November
- Rain
- 10 days
- Sunshine
- 4.7 h
- Daylight
- 9.4 h
- Snow
- 2 days
December
- Rain
- 8 days
- Sunshine
- 4.4 h
- Daylight
- 8.7 h
- Snow
- 3 days
Warmer places to go, by month: January · February · March · April · May · June · July · August · September · October · November · December
Seasons in Ljubljana
Spring (March through May)
Through spring, Ljubljana is mild: 60°F (16°C) by day, 41°F (5°C) after dark, and rain falls on around 35 of the 90 days.
Summer (June through August)
Summer brings comfortable warmth here - highs near 80°F (27°C), nights near 60°F (15°C), and rain falls on around 33 of the 90 days. Daylight is generous - around 12.2 hours of sun a day.
Fall (September through November)
Fall in Ljubljana runs cool rather than cold, with daytime highs averaging 61°F (16°C) and nights around 45°F (7°C); rain falls on around 33 of the 90 days.
Winter (December through February)
Through winter, Ljubljana runs cold: 43°F (6°C) by day, 28°F (-2°C) after dark, and expect showers on roughly 26 days across the season, plus about 8 snowy days.
Climate questions, answered
Is Ljubljana cold in winter?
What should I wear in Ljubljana?
When does Ljubljana drop below freezing?
Is Ljubljana hot in summer?
How often does it rain in Ljubljana?
Best time to visit Ljubljana
Aim for July to August and April if you get the choice: warm days, manageable rainfall and plenty of daylight line up, and highs average 71°F (22°C) against roughly 10 wet days a month. For the same question asked the other way round, see where else is warm in July.
Pack for Ljubljana with light clothing for the warm months, a warm jacket and layers for the cooler season and a compact umbrella or rain shell. Note the gap between afternoon and night: July pairs 82°F (28°C) with 61°F (16°C).
Ljubljana temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need the precipitation in other units? The mm-to-inches rainfall converter handles it.