Northland, with its northern location, low elevation and close proximity to the sea is characterised by a mild, humid, and rather windy climate. Summers are warm and tend to be humid, while winters are mild, with many parts of the region having only a few light frosts each year. Rainfall is typically plentiful all year round with sporadic very heavy falls. However dry spells do occur, especially during summer and autumn. Most parts of Northland receive about 2000 hours of sunshine per year. It can be very windy in exposed areas and occasionally Northland experiences gales, sometimes in association with the passage of depressions of tropical origin.
All numbers given in the tables of this report are calculated using data from the 1981-2010 normal period (a normal is an average or estimated average over a standard 30 year period), unless otherwise stated.