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Samos fire, August 2025 Samos, O Incio

Out · last measured on 25 Aug 2025

The fire started on 25 August 2025 in Samos, Spain, and satellites saw it burning for 1 day. Copernicus mapped a burnt perimeter of 239 hectares from satellite imagery, spread across 2 municipalities.

It is the 14th largest in Lugo since 2016 (of 34 with a page). Number 101 in Spain in 2025, of 158.

We have the Copernicus perimeter for this fire, but not yet its hotspots: NASA publishes the yearly hotspot archive only once the year closes. The page picks it up automatically when it is available.

Burnt area
239ha
Copernicus perimeter
Duration
1day
25 Aug 2025 – 25 Aug 2025
Municipalities hit
2
municipalities
Started on
25 Aug
2025
Danger at start
26
High · FWI index
Natura 2000
99%
of the perimeter is protected land

Where it burned

The weather it burned in

26°high
32km/h · peak gust
41%lowest humidity

It had gone 4 days without rain (1 mm or more) when it started. Rain came after the fire: 3.5 mm on 28 Aug.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

  1. Samos where it started
    216 ha
    1.6 %
  2. O Incio 1,158 inhabitants · 7.3 km from the town
    24 ha
    0.2 %

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

  • Other natural land69 %
  • Mixed forest17 %
  • Broadleaved forest13 %
  • Agricultural areas0.8 %

Natura 2000 protected area affected: 99 %

Natura 2000 sites (European Environment Agency, 2024 release) crossed by the perimeter.

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)
25 Aug 26.1 °C 41 % 32 km/h 0.0 mm High 26
26 Aug after 22.1 °C 47 % 35 km/h 0.0 mm High 24
27 Aug after 17.5 °C 51 % 40 km/h 0.8 mm Moderate 16
28 Aug after 16.4 °C 51 % 41 km/h 3.5 mm Low 6

Before and after, from space

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

Before · 18 Aug 2025
After · 1 Sept 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 23 August 2025 the air beside the fire reached 49 µg/m³ of PM2.5. That day averaged 19: 1.3 times the WHO daily guideline (15).

PM2.5 peak49 µg/m³
Days over the guideline2 days
PM1065 µg/m³
Optical depth0.38
232425262728
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)

Other fires nearby

All fires in Spain ›

Frequently asked questions

How long did the Samos fire last?
Copernicus dates it between 25 August 2025 and 25 August 2025: 1 day between the first and last image with fire.
How much area did it burn?
The perimeter Copernicus measured from satellite imagery is 239 hectares (2.4 km²). Official national figures may differ.
Which municipalities burned?
The fire entered 2 municipalities: Samos (216 ha, 1.6 %); O Incio (24 ha, 0.2 %).
Did the fire reach a town?
The closest fire to a town centre came within 7.3 km of O Incio. That is the distance to the perimeter or nearest hotspot; it does not mean it entered the houses.
What was the weather like?
During the fire the temperature reached 26.1 °C, humidity dropped to 41 % and gusts hit 32 km/h. The fire danger index (FWI) reached 26, class High.
Where does this data come from?
From the EFFIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Spain (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: 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
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 112.

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 (Creative Commons Attribution 4.0 International (CC BY 4.0)). 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.