Slovenia Climate
Top 5 Cities: Ljubljana, Maribor, Celje, Kranj, and Velenje
This month in numbers
Slovenia experienced its 8th warmest April on record in 2026, with an average temperature of 11.34°C, which is 2.6°C above the 1961–1990 baseline. The period of February to April 2026 ranked as the 13th warmest on record, with an average temperature of 6.68°C, a significant 2.3°C above the baseline. Globally, April 2026 was the 2nd warmest April on record for land temperatures, with an anomaly of +1.1°C, while the February–April 2026 period also ranked as the 2nd warmest globally for land temperatures, with an anomaly of +1.2°C.
What changed
Slovenia's recent warmth is part of a broader trend, with the country experiencing its warmest year on record in 2025, at 11.56°C. The long-term trend for Slovenia shows a warming of +2.10°C compared to the 1961–1990 baseline. For the latest month, Slovenia ranked 84th out of 234 regions for temperature anomaly, indicating widespread warmth across many areas. Notably, 10 of the top 10 warmest regions globally for April were US states, highlighting a striking concentration of heat there.
What’s driving change?
The warming trend in Slovenia is influenced by global climate patterns. The current ENSO state is Neutral, with a weekly Niño 3.4 SST anomaly of +0.9°C as of April 29, 2026. However, forecasts indicate a strong likelihood of an El Niño developing in the coming months, with a 79% chance for June-August 2026 and an 87% chance for July-September 2026. El Niño typically contributes to warmer global temperatures. Slovenia has also experienced several notable weather events recently. In late March and early April 2026, Slovenia was hit by powerful storms bringing heavy rainfall, strong winds, and hail, which caused significant damage and left thousands without power in Ljubljana.
Sources:
Generated by Gemini from climate data and web sources
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Data Sources
Data Sources for Slovenia
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) — see the Methodology & Sources page for the complete dataset list and update calendar.
FAQs
FAQs
How is the climate in Slovenia changing?
Slovenia is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The trend rate is shown as °C per decade in the headline panel; you can also see the warmest and coolest years on file.
Where does the climate data for Slovenia come from?
Climate data for Slovenia comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the Slovenia climate data cover?
The Slovenia climate profile covers Ljubljana, Maribor, Celje, Kranj and surrounding areas. Temperature, rainfall and emissions data for Slovenia
How often is the Slovenia climate update refreshed?
The Slovenia climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.