Arsonists and "idiots" defied fire bans yesterday as at least five suspicious fires stretched firefighters to the limit.
Authorities in one district have vowed to charge anyone causing fires by "stupidity".
A suspicious fire ripped through 4000sq m of farm land South Auckland yesterday, and arsonists are being blamed for a fire at a home at Matauri Bay in Northland.
In the Far North, fire authorities have already begun billing people at blame for callouts.