Trebinje fire, September 2026 Trebinje
The fire started on 2 September 2026 in Trebinje, Bosnia & Herzegovina, and satellites saw it burning for 5 days. Copernicus mapped a burnt perimeter of 315 hectares from satellite imagery, spread across a single municipality.
It is the 153th largest in Republika Srpska since 2016 (of 391 with a page). Number 33 in Bosnia & Herzegovina in 2026, of 94.
The power measured by the satellite is low (17.1 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.
- Burnt area
- 315ha
- Copernicus perimeter
- Duration
- 5days
- 2 Sept 2026 – 6 Sept 2026
- Municipalities hit
- 1
- municipalities
- Started on
- 2 Sept
- 2026
- Heat detections
- 31
- in a single hotspot: 17 MW
- Danger at start
- 19
- Moderate · FWI index
- Energy released
- 147MW
- sum of detected power
Where it burned
How it evolved, day by day
Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.
The weather it burned in
It had gone 3 days without rain (1 mm or more) when it started. Rain came after the fire: 7.7 mm on 11 Sept.
This area had burned before
70% of the perimeter overlaps earlier fires recorded since 2016: 138 ha in 2017, 2 ha in 2019, 138 ha in 2021, 34 ha in 2022, 29 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 221 ha that had burned before.
- 138 ha Trebinje fire, August 2017 152 ha in total; the hectares shown are those it shares with this fire
- 138 ha Trebinje fire, March 2021 152 ha in total; the hectares shown are those it shares with this fire
- 2 ha Trebinje fire, March 2019 165 ha in total; the hectares shown are those it shares with this fire
What happened to each town
-
Trebinje where it started316 ha reached on 3 Sept0.4 %
Burnt area inside each municipality, from crossing the official perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.
What burned
- Sclerophyllous scrub99 %
- Agricultural areas0.6 %
Land cover inside the perimeter according to Corine Land Cover, as reported by Copernicus.
The weather day by day
ECMWF ERA5 reanalysis at the fire location, the standard reference for past weather, and the Canadian Fire Weather Index (the same system Copernicus uses), computed by WorldFires from that data. Days after the fire run until the first rain.
Open-Meteo.com (CC BY 4.0) · Copernicus Climate Change Service (ERA5)
| Day | High | Min. humidity | Peak gust | Rain | Danger (FWI) |
|---|---|---|---|---|---|
| 2 Sept | 27.0 °C | 46 % | 27 km/h | 0.0 mm | Moderate 19 |
| 3 Sept | 27.2 °C | 36 % | 23 km/h | 0.0 mm | Moderate 21 |
| 4 Sept | 27.2 °C | 32 % | 24 km/h | 0.0 mm | High 25 |
| 5 Sept | 27.9 °C | 39 % | 27 km/h | 0.0 mm | High 24 |
| 6 Sept | 27.3 °C | 38 % | 29 km/h | 0.0 mm | High 26 |
| 7 Sept after | 27.7 °C | 28 % | 24 km/h | 0.0 mm | High 28 |
| 8 Sept after | 26.6 °C | 43 % | 26 km/h | 0.0 mm | High 23 |
| 9 Sept after | 26.0 °C | 48 % | 27 km/h | 0.0 mm | Moderate 21 |
| 10 Sept after | 26.4 °C | 49 % | 28 km/h | 0.0 mm | High 22 |
| 11 Sept after | 24.0 °C | 62 % | 44 km/h | 7.7 mm | Very low 3 |
Before and after, from space
Drag the line to compare the same ground before the fire and after it.
If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.
The smoke
CAMS · CopernicusOn 9 September 2026 the air beside the fire reached 59 µg/m³ of PM2.5. That day averaged 35: 2.3 times the WHO daily guideline (15).
Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.
Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)
Detections table · 31Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
Frequently asked questions
- How long did the Trebinje fire last?
- According to the heat detections seen by satellite inside the perimeter, it burned from 2 September 2026 to 6 September 2026 (5 days). The perimeter dates it from 2 September 2026 to 2 September 2026.
- How much area did it burn?
- The perimeter Copernicus measured from satellite imagery is 315 hectares (3.2 km²). Official national figures may differ.
- Which municipalities burned?
- The fire only entered Trebinje (316 ha, 0.4 %).
- What was the weather like?
- During the fire the temperature reached 27.0 °C, humidity dropped to 46 % and gusts hit 27 km/h. The fire danger index (FWI) reached 19, class Moderate.
- Where does this data come from?
- From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Bosnia & Herzegovina (geoBoundaries). It is not an official report.
Where to verify it
A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.
Emergency number: 123 · 112
Satellite cross-check
Does something look wrong on this page?
This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.
Report an error
Where this data comes from
The perimeter and land cover come from the Copernicus European Forest Fire Information System (EFFIS), measured on MODIS and Sentinel-2 imagery and published under CC BY 4.0. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM3 (Public Domain). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ slightly from each country’s official figure.