Day
3 °C
Night
-2 °C
Sea
12 °C
Precipitation
104 mm
in month
Rainy days
9 days
in month
Daylight
8 hours
average
Sunshine
2 hours
average
Humidity
87 %
We make the most from 40 years of historical weather data to predict the best weather conditions.
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Situated in Slovenia, Ljubljana is characterized by its mild continental climate. Daytime temperatures can range from an average low of 3 °C (37 °F) in the coldest month of January to a warm 27 °C (81 °F) in the peak of summer in July. The least amount of rainfall occurs in January, counting just 7 days of precipitation. Conversely, the wettest month is June, with a total of 13 days of rain. Nighttime temperatures drop to a low of -4 °C (25 °F) in January and rise up to 15 °C (59 °F) during the warm July nights.
January in Ljubljana witnesses the lowest day temperatures, averaging around 3 °C (37 °F), and the night temperatures hitting their lowest as well, reaching -4 °C (25 °F). This month also sees the fewest rainy days, totaling 7 days, and registers the least amount of rainfall. As the year begins, the duration of sunlight without clouds starts to increase, recorded at 2 hours.
As February arrives, a gradual increase in daytime temperatures can be noted, reaching around 6 °C (43 °F) in Ljubljana. An uptick in the number of rainy days can be discerned in this period. Meanwhile, the amount of cloudless sunshine continues its upward trajectory, now standing at 3 hours.
March greets Ljubljana with a continued increase in day temperatures. A noticeable elevation in night temperatures starts to take place, averaging 1 °C (33 °F). Additionally, there is a marked beginning in the ascent of rainfall totals, amounting to 83 mm (3.28 in). The highest wind speeds are typically observed during this month. Sunlight hours extend further, now at 4 hours.
The upward trend of daytime temperatures is apparent in April, recording an average of 16 °C (60 °F), while nighttime temperatures continue to rise similarly, averaging 5 °C (41 °F). The volume of rainfall keeps increasing, reported at 97 mm (3.81 in), and the beginning of the increase in rainy days can be identified this month. The relative humidity reaches its lowest point for the city, marked at 72 %.
The tourist season begins to burgeon incrementally in Ljubljana, accompanied by a continued rise in day temperatures, which now stand at 21 °C (69 °F). Night temperatures also exhibit an increase. Rainfall volume persists in its upward trend, now hitting 114 mm (4.50 in). The quantity of sunlight continues to climb, with 7 hours of sunshine.
With the day temperature rising as in the previous month, Ljubljana greets June with an average temperature of 24 °C (75 °F), and the night temperature also shows a similar pattern, standing at 13 °C (55 °F). The arriving tourist season is anticipated this month. The maximum count of rainy days reaches 13 days. Meanwhile, sunshine hours keep on their ascent, now at 7 hours.
The peak of summer in July showcases the highest daytime temperatures in Ljubljana at 27 °C (81 °F), alongside the maximum night time temperature bearing an average of 15 °C (59 °F). The travel season is in full swing. A decline in the number of rainy days makes its presence known. The pinnacle of sunlight hours graces this time, reaching its zenith at 8 hours.
As August comes, a slight dip in day temperatures is observed, now averaging 26 °C (79 °F), and a similar downturn in night temperatures begins, averaging 14 °C (58 °F). The tourist season remains underway. An early rise in the amount of rainfall is recognized, with the value measuring 133 mm (5.23 in). Sunlight hours start their gradual decrease, now noted at 8 hours.
The ongoing tourist season is quite noticeable in Ljubljana as the day temperatures begin their descent, reaching an average of 21 °C (70 °F). Night temperatures fall likewise, averaging 10 °C (50 °F). The reduction in the number of rainy days commences, now tallied at 11 days, while conversely, rainfall totals start to increase, measuring 141 mm (5.55 in).
Continuing the tourism season, October in Ljubljana sees further reductions in day temperatures, now at 15 °C (59 °F). The monthly count of rainy days also follows a descending trajectory, tallying 10 days, while rainfall reaches its peak, totaling 151 mm (5.93 in). The wind speed during this month registers at its lowest, averaging 1 m/s.
November continues the trend of decreasing temperatures, with day averages dropping to 8 °C (46 °F), while the night sees further declines, hitting 2 °C (35 °F). A commencement in the descent of rainfall is also noted, with the volume measured at 127 mm (5.01 in). The number of sunshine hours continues its decline, now reporting 2 hours.
With day temperatures descending to an average of 3 °C (37 °F) in December, Ljubljana feels the cold of winter nights as well, averaging -2 °C (28 °F). Rainfall quantities also follow a decreasing pattern, reaching 104 mm (4.08 in), while the number of rainy days reduces. The minimal daylight hours without clouds are observable, with the value standing at 2 hours.
During January, Ljubljana experiences about 2 hours of sunshine.
The day temperature in Ljubljana for February shows a mild increase, averaging 6 °C (43 °F).
March sees the highest wind speeds in Ljubljana, with an average of 2 m/s.
From March to April, Ljubljana enjoys an increment in sun hours, now averaging around 6 hours.
Visitors in May will experience moderate rainfall, with an average precipitation of 114 mm (4.50 in).
In the starting month of the tourist season, June, Ljubljana has the most rainy days, about 13 days.
In July, the high temperatures averaging 27 °C (81 °F) in Ljubljana are perfect for outdoor activities, albeit sometimes intense in direct sunlight.
The subtle decline in temperature during August to an average of 26 °C (79 °F) does not significantly hinder the ongoing tourist season in Ljubljana.
September brings a decline in temperatures alongside an increase in rainfall, with averages climbing to 141 mm (5.55 in).
Ljubljana in October, with an average of 10 days of rain and cooler temperatures averaging 15 °C (59 °F), remains welcoming for tourists seeking a mild climate.
As sunlight hours dwindle down to 2 hours in November, daily activities in Ljubljana may shift to accommodate shorter, cooler days.
December brings a chilling close to the year in Ljubljana, with cold day and night temperatures, averaging 3 °C (37 °F) and -2 °C (28 °F) respectively.