About Nelson, Nelson Region's Climate & Weather History

With a population of around 54,400, Nelson sits in Nelson Region, New Zealand. The city operates in the New Zealand time zone.

In 2025, Nelson recorded an average annual temperature of 57°F. The hottest temperatures reached 78°F in March; the coolest were 34°F in June. Total precipitation for the year was 73 inches, with the wettest month being June.