Ljubljana Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Ljubljana, Osrednjeslovenska, Slovenia. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's now guide you through the details for a complete overview.
Ljubljana is known for its substantial rain/snowfall, with annual precipitation reaching 1241 mm (49 in).
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
While rainfall varies throughout the year, each season offers its own charm. September brings wetter days averaging 132 mm (5.2 in) of precipitation, spread over 13 rainy days.
In contrast, January experiences a drier climate, with about 63 mm (2.5 in) of snow/rainfall spread across 13 snowy/rainy days.
September, the wettest month, has a maximum daytime temperature of 21°C (70°F). The city receives 182 hours of sunshine in this period. During the driest month January you can expect a temperature of 5°C (41°F). For more detailed insights into the city's temperatures, visit our Ljubljana Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Explore Ljubljana's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Ljubljana spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Slovenia: City Comparison
The map below shows the annual precipitation across Slovenia. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Ljubljana vs World: Rainfall Compared
Ljubljana's average annual precipitation is 1241 mm (49 in). Let's compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
- The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
- Approximately 70% of lightning bolts strike land rather than oceans.
- A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.
For more detailed information about Ljubljana's weather, including sunshine hours, humidity levels, and temperature data, visit our Ljubljana Climate page.
