The weather in Kahurangi is generally warm but may be distorted by strong western winds entering from the Tasman Sea. The weather may change rapidly and particularly at high altitudes. Exposed to the Tasman Sea, the winter may bring heavy snowfall. Heavy rainfall may flood Kahurangi's waterways.
The summer months have a mild average temperature of 9° to 14° C, the winter months vary between 3° and 8° C, but barely fall below zero.