Blenheim Weather in July
What's the weather like in Blenheim (Marlborough) in July 2025?
The climate in Blenheim during July can be summarized as cool and a little damp.
July is in the winter in Blenheim and is typically the coldest month of the year. Daytime maximum temperatures average around a cool 11°C (53°F), whilst at night 1°C (34°F) is normal.
| Daytime temperature | 11.4°C 52.5°F |
|---|---|
| Nightly temperature | 1°C 33.8°F |
| Average temperature | 6.2°C 43.2°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 92 mm 3.6 ins |
| Rainy days | 10 days |
| Sea temperature | 12.7°C 54.9°F |
| Humidity | 82% |
| Windspeed | 14kph 9 mph |
On average July is the 2nd wettest month of the year in Blenheim with around 92mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.
On the flip side this corresponds to an average of 5 hours of sunshine per day.
July temperatures in Blenheim
July rainfall
July hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Blenheim in July 2025.
Other monthly averages
Blenheim weather stats
| Hottest month: | January | 23.3°C 73.9°F |
|---|---|---|
| Driest month: | February | 43mm 1.7ins |
| Sunniest month: | February | 8.2hrs |
| Coldest month: | July | 11.2°C 52.2°F |
| Wettest month: | August | 95mm 3.7ins |
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