Here are a collection of links to weather sites.

Link	Description
Metservice	The official forecaster for New Zealand. All the forecast info you need - observations, rain radar, forecasts, forecast models, weather warnings, etc.
Auckland webcam	An HD weather webcam looking across the harbour towards Auckland City
NZ Webcams	Webcams from various places around New Zealand. Some great scenic views on a fine day
List of NZ Weather Stations	Links to other 'unofficial' NZ Weather stations, compiled into one site, with a map as well
NZ Weather Forum (1)	An NZ-based forum for discussing the weather
NZ Weather Forum (2)	Another NZ-based forum for discussing the weather
National Climate Database	Here you can download historical data for official NZ weather stations
NIWA - Monthly summaries	Monthly weather summaries for New Zealand from NIWA

And here are some links to non-weather sites.

Link	Description
NZ Webcams	Webcams from various places around New Zealand. Some great scenic views on a fine day
Geonet	Information on earthquakes and volcanic activity in NZ
NZ Earthquake Map	View NZ earthquakes overlaid on a map, in an interactive format. Contains listings for all located earthquakes (Geonet does not post all quakes to their site)