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BR · Brazil · Maranhão · 73,872 inhabitants

Wildfires in Grajaú

Grajaú, Brazil, has had 49 large fires recorded by GWIS since 2016: 378,522 hectares burned inside its boundaries, 42% of its area. Fire danger today: high (FWI 22).

Only fires of 3,000 ha or more get an entry: smaller ones are not in the lists or the totals on this page.

These figures leave out one provisional page, seen only as heat detections and still without a perimeter. They appear in the lists, marked.

Fire danger, today and the coming days

FWI computed from the Open-Meteo forecast
  1. Sat 24 High 37° · 34 % · 28 km/h
  2. Sun 25 High 36° · 40 % · 38 km/h
  3. Mon 26 Moderate 36° · 37 % · 32 km/h
  4. Tue 27 Moderate 36° · 39 % · 23 km/h
  5. Wed 28 Low 36° · 41 % · 27 km/h
  6. Thu 29 Low 34° · 47 % · 34 km/h
  7. Fri 30 Very low 33° · 51 % · 35 km/h
  8. Sat 31 Very low 34° · 48 % · 29 km/h

Canadian Fire Weather Index, the same system Copernicus uses, computed by WorldFires from the weather forecast and two months of past weather for fuel state. It is an estimate per municipality, not an official warning: warnings are issued by each country’s emergency service.

The municipality and its fires

Since 2016

378,522
hectares burned
42 %
of its area
49
fires
8,922
km²

How many times has Grajaú burned?

Grajaú has burned 49 times since 2016, in 10 years: 2016, 2017, 2018, 2019, 2021, 2022, 2023, 2024, 2025 and 2026. The most recent: Jenipapo dos Vieiras fire, August 2026, with 1,185 hectares inside the municipality.

  1. 8× 16
  2. 20× 17
  3. 2× 18
  4. 7× 19
  5.   20
  6. 1× 21
  7. 2× 22
  8. 2× 23
  9. 1× 24
  10. 5× 25
  11. 1× 26
49
fires
10
years with fire
378,522
cumulative ha
13 Aug 2026
most recent

Fires larger than 3,000 hectares with a perimeter since 2016 that reached the municipality, even partly. Cumulative hectares add up every fire; the distinct area counts land that burned several times only once. Perimeters and boundaries overlaid by WorldFires.

Where it has burned most often in Brazil →

Fires that entered Grajaú

  1. 616 ha Grajaú fire, October 2026 where it started 0.1% of the municipality · 0 ha in total · 18 days
  2. 1,185 ha Jenipapo dos Vieiras fire, August 2026 0.1% of the municipality · 4,410 ha in total · 18 days
  3. 3,174 ha Grajaú fire, September 2025 where it started 0.4% of the municipality · 3,153 ha in total · 20 days
  4. 62,114 ha Grajaú fire, 25 August 2025 where it started 7.0% of the municipality · 61,698 ha in total · 47 days
  5. 21 ha Jenipapo dos Vieiras fire, 24 August 2025 0.0% of the municipality · 3,565 ha in total · 26 days
  6. 506 ha Jenipapo dos Vieiras fire, 22 August 2025 0.1% of the municipality · 8,150 ha in total · 22 days
  7. 7,642 ha Grajaú fire, 21 August 2025 where it started 0.9% of the municipality · 7,591 ha in total · 29 days
  8. 3,640 ha Grajaú fire, August 2024 where it started 0.4% of the municipality · 3,616 ha in total · 16 days
  9. 3,559 ha Grajaú fire, 28 September 2023 where it started 0.4% of the municipality · 3,535 ha in total · 8 days
  10. 1,134 ha Grajaú fire, 29 August 2023 where it started 0.1% of the municipality · 5,700 ha in total · 25 days
  11. 9,077 ha Grajaú fire, August 2022 where it started 1.0% of the municipality · 9,012 ha in total · 14 days
  12. 3,281 ha Grajaú fire, July 2022 where it started 0.4% of the municipality · 3,258 ha in total · 9 days
  13. 3,379 ha Grajaú fire, September 2021 where it started 0.4% of the municipality · 3,355 ha in total · 6 days
  14. 3,595 ha Grajaú fire, October 2019 where it started 0.4% of the municipality · 3,568 ha in total · 9 days
  15. 1,817 ha Arame fire, September 2019 0.2% of the municipality · 7,589 ha in total · 10 days
  16. 12 ha Jenipapo dos Vieiras fire, 12 September 2019 0.0% of the municipality · 3,053 ha in total · 18 days
  17. 22 ha Jenipapo dos Vieiras fire, 7 September 2019 0.0% of the municipality · 12,543 ha in total · 17 days
  18. 2,917 ha Grajaú fire, September 2019 where it started 0.3% of the municipality · 3,020 ha in total · 8 days
  19. 5,748 ha Grajaú fire, 27 August 2019 where it started 0.6% of the municipality · 5,709 ha in total · 17 days
  20. 10,582 ha Grajaú fire, 10 August 2019 where it started 1.2% of the municipality · 10,506 ha in total · 12 days
  21. 174 ha Jenipapo dos Vieiras fire, 15 August 2018 0.0% of the municipality · 3,144 ha in total · 20 days
  22. 423 ha Jenipapo dos Vieiras fire, 11 August 2018 0.0% of the municipality · 18,300 ha in total · 24 days
  23. 2,474 ha Arame fire, 15 October 2017 0.3% of the municipality · 6,556 ha in total · 14 days
  24. 1,269 ha Fernando Falcão fire, October 2017 0.1% of the municipality · 8,149 ha in total · 18 days
  25. 4,304 ha Grajaú fire, 23 September 2017 where it started 0.5% of the municipality · 4,273 ha in total · 15 days
  26. 3,570 ha Grajaú fire, 17 September 2017 where it started 0.4% of the municipality · 3,793 ha in total · 7 days
  27. 4,462 ha Grajaú fire, 17 September 2017 where it started 0.5% of the municipality · 4,430 ha in total · 7 days
  28. 150 ha Sítio Novo fire, September 2017 0.0% of the municipality · 3,217 ha in total · 8 days
  29. 1,048 ha Arame fire, 16 September 2017 0.1% of the municipality · 5,267 ha in total · 23 days
  30. 3,077 ha Amarante do Maranhão fire, 15 September 2017 0.3% of the municipality · 8,330 ha in total · 17 days
  31. 23,984 ha Grajaú fire, 12 September 2017 where it started 2.7% of the municipality · 23,836 ha in total · 21 days
  32. 3,624 ha Grajaú fire, 12 September 2017 where it started 0.4% of the municipality · 3,599 ha in total · 17 days
  33. 759 ha Barra do Corda fire, 4 September 2017 0.1% of the municipality · 15,420 ha in total · 41 days
  34. 3,630 ha Fernando Falcão fire, September 2017 0.4% of the municipality · 10,476 ha in total · 26 days
  35. 3,146 ha Itaipava do Grajaú fire, August 2017 0.4% of the municipality · 10,305 ha in total · 29 days
  36. 5,853 ha Grajaú fire, 28 August 2017 where it started 0.7% of the municipality · 5,813 ha in total · 28 days
  37. 16,191 ha Grajaú fire, 27 August 2017 where it started 1.8% of the municipality · 16,088 ha in total · 29 days
  38. 3,133 ha Grajaú fire, 25 August 2017 where it started 0.4% of the municipality · 3,113 ha in total · 17 days
  39. 3,139 ha Jenipapo dos Vieiras fire, 23 August 2017 0.4% of the municipality · 13,401 ha in total · 33 days
  40. 7,625 ha Grajaú fire, 22 August 2017 where it started 0.8% of the municipality · 7,574 ha in total · 29 days
  41. 98,702 ha Barra do Corda fire, August 2017 11% of the municipality · 100,645 ha in total · 56 days
  42. 7,194 ha Jenipapo dos Vieiras fire, 14 August 2017 0.8% of the municipality · 26,176 ha in total · 48 days
  43. 1,888 ha Arame fire, October 2016 0.2% of the municipality · 5,415 ha in total · 10 days
  44. 7,342 ha Grajaú fire, October 2016 where it started 0.8% of the municipality · 7,299 ha in total · 12 days
  45. 7,850 ha Grajaú fire, 26 August 2016 where it started 0.9% of the municipality · 7,796 ha in total · 20 days
  46. 24,264 ha Grajaú fire, 20 August 2016 where it started 2.7% of the municipality · 24,102 ha in total · 33 days
  47. 3,226 ha Grajaú fire, 29 July 2016 where it started 0.4% of the municipality · 3,207 ha in total · 11 days
  48. 8,558 ha Grajaú fire, 24 July 2016 where it started 1.0% of the municipality · 8,502 ha in total · 22 days
  49. 2,002 ha Jenipapo dos Vieiras fire, 22 July 2016 0.2% of the municipality · 6,413 ha in total · 18 days
  50. 2,057 ha Jenipapo dos Vieiras fire, 21 July 2016 0.2% of the municipality · 12,142 ha in total · 27 days

Where this data comes from

Perimeters come from GWIS (Copernicus, CC BY 4.0), rebuilt from heat detections, and municipal boundaries from geoBoundaries/Instituto Brasileiro de Geografia e Estatística (IBGE), OCHA ROLAC (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing both. The forecast is from Open-Meteo (CC BY 4.0).

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