Ljubljana, Slovenia climate
Average temperatures, precipitation and all-time records for Ljubljana, Slovenia, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is August, averaging a high of 26°C, and its coldest is January, with an average low of -4°C.
Ljubljana is the capital and largest city of Slovenia, located along a trade route between the northern Adriatic Sea and the Danube region, north of the country's largest marsh, it has been inhabited since prehistoric times. via Wikipedia
How today compares
Latest recorded day: 2026-07-21. Each reading placed on Ljubljana, Slovenia's own ±7-day seasonal distribution.
Ljubljana average temperatures by month
Typical daily high and low, and average precipitation, for each month in Ljubljana, Slovenia, based on 1981–2026 records. The wettest month is September (5 mm on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 3°C | -4°C | 3 mm |
| February | 4°C | -4°C | 3 mm |
| March | 9°C | -1°C | 3 mm |
| April | 13°C | 3°C | 3 mm |
| May | 18°C | 8°C | 3 mm |
| June | 22°C | 12°C | 3 mm |
| July | 25°C | 14°C | 3 mm |
| August | 26°C | 14°C | 3 mm |
| September | 21°C | 10°C | 5 mm |
| October | 15°C | 6°C | 3 mm |
| November | 8°C | 1°C | 3 mm |
| December | 4°C | -3°C | 3 mm |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -23°C to 46°C scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 37°C on 1983-07-27
- Coldest day on record: -23°C on 2018-02-28
Percentiles compare each day to Ljubljana, Slovenia's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →