Lábrea fire, 23 August 2025 Lábrea
The fire started on 23 August 2025 in Lábrea, Brazil, and satellites saw it burning for 11 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 9,275 hectares from heat detections, spread across a single municipality.
It is the 48th largest in Amazonas since 2016 (of 450 with a page). Number 137 in Brazil in 2025, of 714.
Compare with…
Suggestions: Lábrea · 2024Lábrea · 2024Lábrea · 2022Lábrea · 2024
- Burnt area
- 9,275ha
- GWIS perimeter (Copernicus)
- Duration
- 11days
- 23 Aug 2025 – 2 Sept 2025
- Municipalities hit
- 1
- municipalities
- Started on
- 23 Aug
- 2025
- Heat detections
- 781
- in a single hotspot: 186 MW
- Danger at start
- 30
- High · FWI index
- Average daily power
- 833MW
- detected power per day, on average
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 2 days without rain (1 mm or more) when it started. Rain came after the fire: 6.3 mm on 10 Sept.
This area had burned before
89% of the perimeter overlaps earlier fires recorded since 2016: 18 ha in 2019, 703 ha in 2020, 2,466 ha in 2021, 8,329 ha in 2022, 6,223 ha in 2023, 10,184 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 8,245 ha that had burned before.
- 2,988 ha Lábrea fire, July 2024 43,699 ha in total; the hectares shown are those it shares with this fire
- 2,620 ha Lábrea fire, July 2024 4,237 ha in total; the hectares shown are those it shares with this fire
- 1,621 ha Lábrea fire, August 2022 8,260 ha in total; the hectares shown are those it shares with this fire
- 987 ha Lábrea fire, August 2024 5,372 ha in total; the hectares shown are those it shares with this fire
How big is it?
London boundary: geoBoundaries · Office for National Statistics (Open Government Licence v3.0).
Paris boundary: geoBoundaries · Institut national de l'information géographique et forestière (IGN-F) (Etalab Open License 2.0).
Madrid boundary: geoBoundaries · Open Data ESRI, IGN Central Registry of Cartography Area (CC BY 4.0).
Berlin boundary: geoBoundaries · Federal Agency for Cartography and Geodesy (dl-de/by-2-0).
This compares size, not location: both shapes are at the same scale, north up, centred on each other.
What happened to each town
-
9,352 ha reached on 23 Aug0.1 %
Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance runs from the point marking the centre of each area to the nearest fire: staying a kilometre away does not mean it reached the houses.
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) |
|---|---|---|---|---|---|
| 23 Aug | 37.0 °C | 31 % | 38 km/h | 0.0 mm | High 30 |
| 24 Aug | 36.9 °C | 20 % | 33 km/h | 0.1 mm | Very high 39 |
| 25 Aug | 31.7 °C | 29 % | 37 km/h | 0.0 mm | High 37 |
| 26 Aug | 33.7 °C | 27 % | 39 km/h | 0.0 mm | High 37 |
| 27 Aug | 36.1 °C | 24 % | 32 km/h | 0.0 mm | High 36 |
| 28 Aug | 35.8 °C | 27 % | 25 km/h | 0.0 mm | High 34 |
| 29 Aug | 36.6 °C | 27 % | 17 km/h | 0.0 mm | High 33 |
| 30 Aug | 37.5 °C | 31 % | 22 km/h | 0.0 mm | High 34 |
| 31 Aug | 37.2 °C | 36 % | 29 km/h | 0.4 mm | High 33 |
| 1 Sept | 38.3 °C | 30 % | 25 km/h | 0.8 mm | High 30 |
| 2 Sept | 32.1 °C | 52 % | 25 km/h | 8.2 mm | Very low 3 |
| 3 Sept after | 34.0 °C | 43 % | 24 km/h | 1.0 mm | Low 10 |
| 4 Sept after | 35.3 °C | 39 % | 16 km/h | 4.6 mm | Very low 4 |
| 5 Sept after | 31.5 °C | 63 % | 27 km/h | 14.4 mm | Very low 0 |
| 6 Sept after | 29.9 °C | 57 % | 31 km/h | 10.2 mm | Very low 0 |
| 7 Sept after | 28.8 °C | 58 % | 17 km/h | 1.1 mm | Very low 1 |
| 8 Sept after | 35.2 °C | 43 % | 23 km/h | 0.1 mm | Low 7 |
| 9 Sept after | 34.9 °C | 45 % | 20 km/h | 0.0 mm | Low 10 |
| 10 Sept after | 32.3 °C | 60 % | 29 km/h | 6.3 mm | Very low 1 |
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 31 August 2025 the air beside the fire reached 166 µg/m³ of PM2.5. That day averaged 77: 5.2 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 · 781Every satellite heat detection, one by one, with time, satellite, power and coordinates.
| Date and time | Satellite | FRP (MW) | Lat | Lon |
|---|
Other fires nearby
- 43,699 haLábrea13 July 2024 · 54 days · 11 km away
- 41,632 haLábrea28 July 2021 · 34 days · 25 km away
- 35,986 haLábrea14 August 2022 · 28 days · 26 km away
- 15,510 haLábrea7 August 2020 · 20 days · 28 km away
- 14,628 haLábrea29 July 2019 · 23 days · 29 km away
- 26,762 haLábrea9 August 2022 · 33 days · 30 km away
Frequently asked questions
- How long did the Lábrea fire last?
- GWIS (Copernicus) dates it between 23 August 2025 and 2 September 2025: 11 days between the first and last heat detection of the perimeter.
- How much area did it burn?
- The perimeter GWIS (Copernicus) rebuilt from heat detections is 9,275 hectares (92.8 km²). It is an estimate: official national figures may differ.
- Which municipalities burned?
- The fire only entered Lábrea (9,352 ha, 0.1 %).
- What was the weather like?
- During the fire the temperature reached 38.3 °C, humidity dropped to 20 % and gusts hit 39 km/h. The fire danger index (FWI) reached 39, class Very high.
- Where does this data come from?
- From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Brazil (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: 193 · Emergency number and official warnings ›
Satellite cross-check
History of this page Changes in area, dates, name, official record or merged pages, compared every night since 24 October 2026.
No changes since 24 October 2026.
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
How we know this
- Perimeter: GWIS (Copernicus), rebuilt from heat detections rather than mapped on imagery.
- Dates from the perimeter: the VIIRS detections inside it did not change them. 781 Suomi-NPP VIIRS detections on those dates.
- We have not matched this page with any official record.
- Weather: Copernicus ERA5 reanalysis at the fire location, in cells of about 25 km.
Where this data comes from
The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. 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 ADM2 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.