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Oiapoque fire, November 2025 Oiapoque

Out · last detection 8 Dec 2025, 05:12 UTC

The fire started on 30 November 2025 in Oiapoque, Brazil, and satellites saw it burning for 9 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 3,225 hectares from heat detections, spread across a single municipality.

It is the 35th largest in Amapá since 2016 (of 41 with a page). Number 650 in Brazil in 2025, of 714.

Burnt area
3,225ha
GWIS perimeter (Copernicus)
Duration
9days
30 Nov 2025 – 8 Dec 2025
Municipalities hit
1
municipalities
Started on
30 Nov
2025
Heat detections
123
in a single hotspot: 39 MW
Danger at start
8
Low · FWI index
Energy released
598MW
sum of detected power

Where it burned

8 Dec 2025
HOTSPOTS BY DAY 30 Nov8 Dec

How it evolved, day by day

3012345678

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

The weather it burned in

33°high
40km/h · peak gust
47%lowest humidity

It had gone 3 days without rain (1 mm or more) when it started. Rain came after the fire: 2.9 mm on 9 Dec.

This area had burned before

99% of the perimeter overlaps earlier fires recorded since 2016: 2,484 ha in 2016, 1,330 ha in 2018, 2,426 ha in 2022, 3,089 ha in 2023, 3,165 ha in 2024. Part of it burned more than once, so the yearly figures add up to more than the 3,193 ha that had burned before.

What happened to each town

  1. Oiapoque 27,482 inhabitants where it started
    3,247 ha reached on 30 Nov
    0.1 %

Burnt area inside each municipality, from crossing the GWIS 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.

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)
30 Nov 32.9 °C 53 % 35 km/h 0.2 mm Low 8
1 Dec 32.7 °C 60 % 28 km/h 1.6 mm Very low 3
2 Dec 32.0 °C 59 % 34 km/h 0.4 mm Low 7
3 Dec 32.1 °C 62 % 39 km/h 0.2 mm Low 8
4 Dec 32.5 °C 47 % 34 km/h 0.1 mm Low 10
5 Dec 31.7 °C 53 % 32 km/h 0.0 mm Low 11
6 Dec 32.7 °C 61 % 40 km/h 0.3 mm Low 11
7 Dec 32.8 °C 59 % 38 km/h 0.6 mm Low 10
8 Dec 29.1 °C 72 % 31 km/h 13.3 mm Very low 0
9 Dec after 30.5 °C 75 % 36 km/h 2.9 mm Very low 0

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

Before · 23 Nov 2025
After · 15 Dec 2025

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 · Copernicus

On 30 November 2025 the air beside the fire reached 9 µg/m³ of PM2.5, but no daily average passed the WHO guideline (15).

PM2.5 peak9 µg/m³
Days over the guideline0 days
PM1014 µg/m³
Optical depth0.27
2829301234567891011
Good Fair Moderate Poor Very poor Extremely poor

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 · 123Every satellite heat detection, one by one, with time, satellite, power and coordinates.
⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.
Date and timeSatelliteFRP (MW)LatLon

Other fires nearby

All fires in Brazil ›

Frequently asked questions

How long did the Oiapoque fire last?
GWIS (Copernicus) dates it between 30 November 2025 and 8 December 2025: 9 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 3,225 hectares (32.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?
The fire only entered Oiapoque (3,247 ha, 0.1 %).
What was the weather like?
During the fire the temperature reached 32.9 °C, humidity dropped to 47 % and gusts hit 40 km/h. The fire danger index (FWI) reached 11, class Low.
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

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
What do you think is wrong?

We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 193.

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.