4 Billion Years On

Bosnia and Herzegovina Climate

Top 5 Cities: Sarajevo, Banja Luka, Tuzla, Zenica, and Mostar

This month in numbers

Bosnia and Herzegovina experienced its 10th warmest April on record in 2026, with an average temperature of 11.53°C, which is 2.7°C above the 1961–1990 baseline. The period from February to April 2026 ranked as the 5th warmest on record, with an average temperature of 7.45°C, a significant 2.9°C above the baseline. Globally, April 2026 was the 2nd warmest April on record for land temperatures, and the February–April period also ranked as the 2nd warmest globally.

What changed

The past three months have seen a pronounced warming trend in Bosnia and Herzegovina, with the February–April 2026 period ranking as the 5th warmest on record. This regional warming aligns with a broader global pattern, as global land temperatures for the same three-month period also ranked as the 2nd warmest on record. Bosnia and Herzegovina's 12-month rolling anomaly places it as the 10th warmest out of 234 regions, indicating a sustained period of elevated temperatures.

What’s driving change?

The elevated temperatures in Bosnia and Herzegovina are consistent with the broader trend of , where landlocked regions experience more rapid heating compared to oceanic areas. Europe, where Bosnia and Herzegovina is located, is currently the fastest-warming continent, partly due to its connection with . The country has also experienced significant temperature fluctuations, with unusually warm afternoons following chilly mornings in recent months. In April, Bosnia and Herzegovina experienced flood and flash flood alerts for the Spreca and Bosna rivers, and later in the month, for the Neretva basin.

Looking ahead

The European Centre for Medium-Range Weather Forecasts (ECMWF) and other climate centres are forecasting a transition towards ENSO El Niño conditions in the second half of 2026, which could intensify global heat and weather extremes.

Generated by Gemini from climate data and web sources

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Data Sources

Data Sources for Bosnia and Herzegovina

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 Bosnia and Herzegovina changing?

Bosnia and Herzegovina 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 Bosnia and Herzegovina come from?

Climate data for Bosnia and Herzegovina 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 Bosnia and Herzegovina climate data cover?

The Bosnia and Herzegovina climate profile covers Sarajevo, Banja Luka, Tuzla, Zenica and surrounding areas. Temperature, rainfall and emissions data for Bosnia and Herzegovina

How often is the Bosnia and Herzegovina climate update refreshed?

The Bosnia and Herzegovina 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.