Blenheim Weather & Climate: Best Time to Visit

Monthly Temperature in Blenheim

The climate in Blenheim experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a pleasant 22°C (72°F) in February, the warmest time of the year, to a moderate 12°C (54°F) during cooler months like July.

At night, you can expect temperatures ranging from 13°C (55°F) in February to around 4°C (39°F) during July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Blenheim

Generally, Blenheim has a moderate amount of precipitation, averaging 932 mm (37 in) of rainfall annually. Year-round, Blenheim has a balanced climate with minimal variation in precipitation. The difference between the wettest month, October, with 93 mm (3.7 in), and the driest month, March, with 60 mm (2.4 in), is minimal. For more details, please visit our Blenheim Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sunshine Hours in Blenheim

Seasonal changes in sunshine hours are quite dramatic in Blenheim. While January receives considerable daily sunshine with up to 8.9 hours, June marks the darkest time of the year, where sunshine is scarce with only 4.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Humidity in Blenheim by Month

The city experiences its highest humidity in June, reaching 90%. In January, the humidity drops to its lowest level at 74%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year