...and plenty of idiots going out and lighting them
Figures vary from one country to another and by the agency responsible. The common factor is that though the percentage of fires deliberately started vary, it’s still a tragic fact that many fires are the work of arsonists. In Italy the agricultural union
Coldiretti suggests up to 60% of wildfires are man-made. In Greece Vassilis Kikilias, the Minister of Climate Crisis and Civil Protection, told a news conference that a total of 667 fires took place. "The majority of them were arsons, either due to criminal negligence or intent," he said, adding: "The difference with other years was the weather conditions."
In Spain Officials in the northern region of Asturias say that unspecified arsonists were behind most of the 100 or so wildfires raging in the heavily wooded and mountainous area. In Portugal approximately 600 people have been placed under investigation over suspicions of deliberately setting fires, police said according to
RTP.
RTP found that dozens of probable perpetrators of arson in forests and wasteland had been arrested, while many more are still on the loose. Police statistics show that this year services have already detained 54 arsonists, some of whom have criminal pasts and have served sentences for setting fires in forests.
Edit; the above could maybe classed as 'official conspiracy theories'