AURSEEAursee
Wildfires in Porto
Detected · VIIRS 375 m · Suomi NPP, NOAA-20, NOAA-21 · last 24 hours · updated 2026-10-11 09:22 UTC
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Fire history, 2012–2025
Detected · VIIRS S-NPP 375 m · 0.01° cells (~1.1 km) · complete years 2012–2025 · built 2026-09-23
Between 2012 and 2025, VIIRS detected fire in 1,410 km² of Porto at least once. In an average year it detected fire in 197 km², ranking 6th of 20 regions of Portugal.
Year by year
Detected area per year, km². Area of 0.01° cells with at least one detection in the year.
The busiest year was 2013, with 460 km² detected; the quietest was 2014, with 71 km². The 2021–2025 average is 35% lower than the 2012–2016 average.
Through the year
Share of all fire-days 2012–2025 by month. A fire-day is one cell with a detection on one day.
July, August and September together hold 68% of the fire-days in the record. The single busiest day was 17 September 2024, with detections in 316 cells.
Ground that burns again
Of the 1,410 km² with at least one detection, 25% had detections in three or more different years.
| Years with a detection | km² | Share |
|---|---|---|
| 1 year | 620 | 44% |
| 2 years | 439 | 31% |
| 3 to 5 years | 333 | 24% |
| 6 to 10 years | 13 | 0.9% |
| 11 years or more | 0.9 | 0.1% |
The half-degree square with the most fire-days is centred at 41.25, -8.25 and holds 64% of the region's fire-days.
The figures
Show the table
| Year | Detected km² | Fire-days |
|---|---|---|
| 2012 | 226 | 303 |
| 2013 | 460 | 681 |
| 2014 | 71 | 152 |
| 2015 | 154 | 230 |
| 2016 | 397 | 596 |
| 2017 | 278 | 404 |
| 2018 | 103 | 157 |
| 2019 | 116 | 184 |
| 2020 | 106 | 160 |
| 2021 | 82 | 123 |
| 2022 | 133 | 178 |
| 2023 | 82 | 94 |
| 2024 | 418 | 576 |
| 2025 | 133 | 182 |
Other regions of Portugal
- Viseu320 km² in an average year
- Vila Real294 km² in an average year
- Braga245 km² in an average year
- Guarda213 km² in an average year
- Viana do Castelo204 km² in an average year
- Bragança161 km² in an average year
- How these figures are madeDetected area, cells, and the single-satellite record.
Detected area counts every 0.01° cell with at least one VIIRS detection, so a small fire counts as a whole cell and a fire missed by cloud or between passes is absent. Borders: Natural Earth 1:10m. 2012 begins on 20 January.