Local rainfall
Tank sizing by region
Rainfall changes dramatically across New Zealand. Pick your region on the map, or from the list below, to see its monthly profile, data status and worked example.
North Island
Warmer, wetter, and far from uniform
Taranaki collects nearly twice what Hawke’s Bay does. The same roof and the same household need different storage on either side of the ranges.
- 1,621mmTaranakiA year at the New Plymouth gaugeRegion details →
- 1,355mmNorthlandA year at the Whangārei gaugeRegion details →
- 1,295mmBay of PlentyA year at the Tauranga gaugeRegion details →
- 1,227mmWaikatoA year at the Hamilton gaugeRegion details →
- 1,225mmWellingtonA year at the Wellington gaugeRegion details →
- 1,142mmAucklandA year at the Auckland gaugeRegion details →
- 1,021mmGisborne / TairāwhitiA year at the Gisborne gaugeRegion details →
- 978mmManawatū–WhanganuiA year at the Palmerston North gaugeRegion details →
- 824mmHawke’s BayA year at the Napier gaugeRegion details →
South Island
The widest rainfall range in the country
The West Coast is the wettest region on this site and Canterbury among the driest, with a main divide between them. Nowhere is a national average less useful.
- 2,554mmWest CoastA year at the Greymouth gaugeRegion details →
- 1,126mmSouthlandA year at the Invercargill gaugeRegion details →
- 1,064mmTasmanA year at the Richmond gaugeRegion details →
- 998mmNelsonA year at the Nelson gaugeRegion details →
- 883mmOtagoA year at the Dunedin gaugeRegion details →
- 652mmMarlboroughA year at the Blenheim gaugeRegion details →
- 652mmCanterburyA year at the Christchurch gaugeRegion details →