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What is the greenhouse effect?
Education ResourceThe greenhouse effect is a warming of the earth's surface and lower atmosphere caused by substances which let the sun's energy through to the ground but impede the passage of energy from the earth back into space. -
Regional climatologies
A regional climatology is a summary of the typical weather and climate of a region, based on historical data observations made at climate stations located within the region. -
Tuna - glass eels
Glass eels (about 5.5 to 7.0 cm) arrive in fresh water during spring, especially during September and October, although they may be present from July to December. -
Mean daily maximum temperatures (°C)
These datasets are available in a range of formats. -
El Niño maps and charts
View a collection of maps showing the impact of past El Niño and La Niña events. -
Map E South
Education ResourceThe climate of this zone is greatly dependent on the lie of the massive Southern Alps to the west. -
Northland
Northland, with its northern location, low elevation and close proximity to the sea is characterised by a mild, humid, and rather windy climate. -
New Zealand Drought Monitor
ServiceThe New Zealand Drought Monitor is a system for keeping track of drought conditions across New Zealand based on a standardised climate index. -
Daily climate maps
These climate maps are updated daily and are based on data from our National Climate Database. -
Mean monthly temperatures (°C)
These datasets are available in a range of formats.