Blenheim Weather in August
August in Blenheim brings moderate temperatures around 13°C (55°F) during the day, dropping to 5°C (41°F) at night, with quite a bit of rainfall expected, averaging around 81 mm (3.2 in) for the month.
Rainfall in Blenheim in August
Climate statistics over the past 30 years suggest around 10 days of rain, with 81 mm (3.2 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Blenheim in August
Expect highs of 13°C (55°F) in Blenheim in August, with nights dropping to around 5°C (41°F). During August, you'll experience the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Blenheim in August
The area experiences a moderate amount of sunshine, with approximately 184 hours of sunlight expected. This means a decent mix of sun and overcast.If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit Blenheim. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Blenheim's climate page.
Blenheim Temperature in August
Min Temperature
5°C (41°F)
Max Temperature
13°C (55°F)
Chance of Rain
34%
Precipitation
81 mm (3.2 in)
Rainy days
10 days
Humidity
86% *
Sunshine
184 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Blenheim typically stay consistent throughout August, with daily highs averaging around 13°C (55°F). Nights are cold, with lows around 7°C (45°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Blenheim in August
Browse day-by-day weather records for Blenheim spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Blenheim historical weather extremes in August
Our historical data for Blenheim spans 1976 to 2025, revealing these weather extremes.
- The warmest day in August was on August 12, 2017, with a maximum of 18°C (64°F).
- The coldest August day was on August 15, 2011, with a maximum of 6°C (43°F).
- Nighttime temperatures dropped to -1°C (30°F) on August 9, 1984, marking the coldest August night on record.
Best Places in New Zealand in August
Find out more about the weather in New Zealand and which places have the best travel conditions in this month. See all of New Zealand in August →
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What to Wear in Blenheim in August
The weather can swing between comfortable and chilly in August, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Blenheim in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Blenheim's climate page.
Temperature Rainfall Sunshine Humidity
See the full Blenheim climate overview or explore weather in New Zealand.
