Slovakia Climate – June 2026 Update
Top 5 Cities: Bratislava, Košice, Prešov, Žilina, and Nitra
This month in numbers
Slovakia experienced a significantly warmer June 2026, with an average temperature of 19.04°C, marking an anomaly of +3.1°C compared to the 1961–1990 baseline. This ranks as the 6th warmest June in 86 years of records. Globally, June 2026 was the 3rd warmest June on record for land temperatures, with an anomaly of +1°C.
What changed
The April–June 2026 period in Slovakia saw an average temperature of 13.68°C, an anomaly of +1.4°C, ranking as the 18th warmest such period on record. This comes after 2025 was recorded as the warmest year on record for Slovakia, with an average temperature of 10.78°C. The country's long-term trend shows a warming of +2.08°C against the 1961–1990 baseline. Globally, the April–June 2026 period was the 2nd warmest on record for land temperatures, with an anomaly of +1°C. Slovakia's one-month anomaly for June places it 32nd out of 234 regions tracked, highlighting a widespread warming trend across Europe, with 10 of the top 10 warmest one-month anomalies being countries.
What’s driving change?
A significant heatwave impacted Slovakia and much of Central and Eastern Europe in late June 2026. This event saw Slovakia set a new national all-time temperature record of 41°C at Turňa nad Bodvou on June 29, 2026, which was then surpassed on June 30 with 41.3°C recorded in Kamenica nad Hronom. The heatwave also brought record-breaking overnight temperatures. This extreme heat was driven by a heat dome, a stalled high-pressure system that trapped hot air over the region. The North Atlantic Oscillation (NAO) was in a negative phase in May 2026 (-0.74), following a positive phase in April (1.39) and a strongly positive phase in March (2.69). Additionally, a severe hailstorm hit Žilina on July 1, 2026, causing significant disruption with hail and strong winds.
Looking ahead
A strengthening El Niño is expected to influence global temperature and rainfall patterns, increasing the risk of extreme weather over the coming months, with forecasts projecting a nearly universal dominance of above-normal temperatures in nearly all parts of the globe for the June-July-August season.
Sources:
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Year-on-Year Trends
The 4byo Climate Helix – Slovakia
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.
Slovakia – 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 – Slovakia
Our World in Data / NOAA - Anomalies vs 1901-2000 mean
Shifting Seasons
Warm / cold seasonsKöppen Dfb · ContinentalHow spring and autumn have shifted in Slovakia. Spring is defined as the date monthly temperatures first rise above the long-term annual mean (7.3°C, from 1940–1969); autumn is the date they fall back below it. Temperature swings 23.4°C peak-to-peak across the year - a classic four-seasons rhythm.
Baseline vs recent monthly temperature climatology. Biggest warming: Feb (+4.4°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 Slovakia
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 Slovakia changing?
Slovakia 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 Slovakia come from?
Climate data for Slovakia 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 Slovakia climate data cover?
The Slovakia climate profile covers Bratislava, Košice, Prešov, Žilina and surrounding areas. Temperature, rainfall and emissions data for Slovakia
How often is the Slovakia climate update refreshed?
The Slovakia 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.