This, via @asteris, suggests that many wildfires in Greece are deliberately set by land development schemers. Money for firefighting has also been slashed in the past decade and it claims little abatement work is done in the off season.https://www.lrb.co.uk/blog/2018/07/26/yiannis-baboulias/when-the-fire-comes/ …
Over here, that's probably near-impossible to fully coordinate off-season, as most firefighters are seasonal, and chronically underpaid at that (down to buying their own gear).