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Monthly climate in Ljubljana, Slovenia

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Ljubljana features a oceanic climate (Cfb).Temperatures typically range between 1 °C (34 °F) and 21 °C (70 °F) through the year, but rarely can drop to -15 °C (6 °F) or can rise to as high as 35 °C (96 °F).The average annual precipitation amounts to about 1261 mm (49.6 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Ljubljana enjoys an average of 3656 hours of sunshine throughout the year, and daylight varies from 8 hours 42 minutes to 15 hours 40 minutes per day.

Monthly average temperatures in Ljubljana, Slovenia §

The warmest months in Ljubljana are June, July and August, with daily mean temperatures ranging from 20 to 21 °C (68 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 4 °C (34 - 39 °F) throughout the day. On average each year, Ljubljana experiences 56 days above 25 °C (77.0 °F) and 73 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ljubljana, Slovenia.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 12°C
(54°F)		 19°C
(67°F)		 22°C
(71°F)		 26°C
(79°F)		 28°C
(82°F)		 34°C
(94°F)		 34°C
(93°F)		 35°C
(96°F)		 29°C
(85°F)		 24°C
(76°F)		 18°C
(65°F)		 14°C
(58°F)
Mean maximum 10°C
(51°F)		 14°C
(58°F)		 20°C
(68°F)		 23°C
(74°F)		 25°C
(78°F)		 30°C
(87°F)		 32°C
(90°F)		 33°C
(92°F)		 29°C
(84°F)		 22°C
(71°F)		 17°C
(62°F)		 12°C
(54°F)
Average high 5°C
(41°F)		 8°C
(46°F)		 11°C
(53°F)		 16°C
(61°F)		 19°C
(67°F)		 25°C
(77°F)		 26°C
(80°F)		 27°C
(81°F)		 21°C
(70°F)		 16°C
(62°F)		 9°C
(49°F)		 5°C
(42°F)
Daily mean 1°C
(34°F)		 4°C
(39°F)		 6°C
(43°F)		 10°C
(51°F)		 14°C
(58°F)		 20°C
(68°F)		 21°C
(70°F)		 21°C
(70°F)		 16°C
(61°F)		 11°C
(52°F)		 6°C
(44°F)		 2°C
(36°F)
Average low -2°C
(28°F)		 -0°C
(32°F)		 1°C
(34°F)		 5°C
(41°F)		 10°C
(50°F)		 14°C
(58°F)		 16°C
(60°F)		 16°C
(61°F)		 11°C
(53°F)		 7°C
(45°F)		 4°C
(39°F)		 -1°C
(31°F)
Mean minimum -8°C
(18°F)		 -7°C
(21°F)		 -5°C
(23°F)		 -3°C
(27°F)		 4°C
(39°F)		 8°C
(46°F)		 12°C
(53°F)		 10°C
(51°F)		 4°C
(39°F)		 2°C
(35°F)		 -3°C
(27°F)		 -8°C
(19°F)
Minimum -12°C
(11°F)		 -11°C
(13°F)		 -14°C
(8°F)		 -11°C
(13°F)		 1°C
(34°F)		 6°C
(43°F)		 10°C
(51°F)		 8°C
(47°F)		 2°C
(35°F)		 -0°C
(31°F)		 -6°C
(22°F)		 -15°C
(6°F)

Compare climate in Ljubljana with other places

Compare temperature, precipitation, sunshine, UV index in Ljubljana, Slovenia with other places around the world.

Monthly average precipitation in Ljubljana, Slovenia §

Ljubljana usually has the most precipitation in May, September and November, with an average of 14 rainy days and 152 mm (6.0 inches) of precipitation per month.The driest months in Ljubljana are January, March and June. On average, 68 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ljubljana, Slovenia.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 51 (2.0) 88 (3.5) 71 (2.8) 94 (3.7) 166 (6.5) 84 (3.3) 98 (3.9) 100 (3.9) 159 (6.3) 98 (3.9) 131 (5.2) 121 (4.8)
Average precipitation days (≥ 1 mm) 7 9 10 12 19 12 13 12 12 9 11 10

Monthly sunshine hours in Ljubljana, Slovenia §

The sunniest months in Ljubljana are June, July and August, when the sun shines an average of 13 hours 20 minutes a day.Least sunny months in Ljubljana: January, November and December receive an average of 6 hours 30 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ljubljana, Slovenia.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 177 219 309 335 360 407 426 392 318 286 211 208
Mean daily daylight hours 9h 5m 10h 21m 11h 56m 13h 33m 14h 57m 15h 40m 15h 17m 14h 3m 12h 29m 10h 52m 9h 26m 8h 42m

Solar UV radiation in Ljubljana, Slovenia §

Ljubljana experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure.January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Ljubljana UV Index data.

Average daily maximum UV levels by month for Ljubljana, Slovenia.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 5 6 8 9 9 8 7 5 3 2