Ljubljana, Slovenia Climate & Monthly Averages
Ljubljana has an oceanic climate. July is the hottest month, averaging 82° by day; January is the coldest at 41°.
How weather changes through the year in 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.
Ljubljana 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, rain and sunshine
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.
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).
Where Ljubljana sits among other climates
- 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.
These comparisons use the same ten-year window for every city in the dataset.
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
Each card shows the average high and low. The bar places that month between Ljubljana's coldest night and 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
Looking for warmer alternatives? Browse warm places by month, or compare Ljubljana's coolest part of the year: January, December, February.
A season-by-season guide to 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.
Questions people ask about Ljubljana's climate
Is Ljubljana cold in winter?
What should I wear in Ljubljana?
When does Ljubljana drop below freezing?
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The most useful weather window for 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.
What to pack
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 extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.