For some, a brief spell at the nearest school pool is all they need to beat the heat.
The trouble is that some unruly Northlanders are trespassing and committing acts of vandalism by cutting school fences to get in to the pools.
In some cases, they are also damaging surveillance cameras.
Whangārei school swimming pools have become a convenient cooling hotspot this summer - but often at a cost the education providers can ill afford.
Whau Valley School principal Steve Jenkins said people have cut holes or climbed over fences to access the pool in recent years during hot summer days or nights.