Blenheim is a city of approximately 29,800 people in Marlborough, New Zealand. Located in the New Zealand time zone at 41.5°S latitude.
In 2025, Blenheim recorded an average annual temperature of 55°F. The hottest temperatures reached 87°F in January; the coolest were 32°F in August. Total precipitation for the year was 40 inches, with the wettest month being June.
View current conditions and forecast for Blenheim · More cities in Marlborough