Slovenia Climate – June 2026 Update
Top 5 Cities: Ljubljana, Maribor, Celje, Kranj, and Velenje
This month in numbers
Slovenia experienced its 3rd warmest June on record, with an average temperature of 21.34°C, a significant +4.7°C anomaly compared to the 1961–1990 baseline. The period of April–June 2026 also ranked as the 5th warmest on record, with an average of 15.38°C, an anomaly of +2.5°C. Globally, June 2026 was the 3rd warmest June for land temperatures, and the April–June period was the 2nd warmest on record for global land temperatures.
What changed
Slovenia's latest monthly temperature anomaly of +4.67°C placed it as the 6th warmest out of 234 regions globally for June 2026, highlighting a striking concentration of warmth across European countries. The country's annual average temperature for 2025 was 11.56°C, making it the warmest year on record.
What’s driving change?
The significant warming observed in Slovenia can be attributed to several factors, including broader seasonal shifts and the influence of . In June 2026, Slovenia, along with other Central and Southern European nations, experienced a heatwave with temperatures significantly above average. This period also saw severe thunderstorms sweep across the Balkans, impacting Slovenia on June 10, 2026, with damaging winds, hail, and heavy rainfall that damaged over 150 buildings. This extreme weather event was part of an unstable weather pattern with hot air lingering over the Adriatic Sea and a cold front moving southeastward.
Looking ahead
The forecast for July 2026 in Slovenia predicts temperatures to be around 30°C, close to the historical average, with significant rainfall expected over more than 17 days.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Year-on-Year Trends
The 4byo Climate Helix – Slovenia
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Slovenia – Monthly Temperature – All Years
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Records – Slovenia
Our World in Data / NOAA - Anomalies vs 1901-2000 mean
Shifting Seasons
Warm / cold seasonsKöppen Dfb · ContinentalHow spring and autumn have shifted in Slovenia. Spring is defined as the date monthly temperatures first rise above the long-term annual mean (8.7°C, from 1940–1969); autumn is the date they fall back below it. Temperature swings 21.8°C peak-to-peak across the year - a classic four-seasons rhythm.
Baseline vs recent monthly temperature climatology. Biggest warming: Feb (+4.0°C).
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Rainfall & Precipitation
Rainfall & Rain Days – Totals
Headline: anomaly vs the 1961–1990 mean. Small figure: the actual value. Rank: position in the full record (1st = highest ever). Record: highest (or lowest) value on record with its year.
Emissions & Energy
Explore
Explore Climate Data
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 headline panel also shows the long-term trend rate per decade and 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.