Whanganui Weather in August
Whanganui in August sees moderate temperatures, with highs around 14°C (57°F) and overnight lows of 8°C (46°F). Rainfall is fairly high at around 107 mm (4.2 in) on average, so pack waterproofs just in case.
Rainfall in Whanganui in August
Based on our climate data of the past 30 years, about 15 days of rain are anticipated, with 107 mm (4.2 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Whanganui in August
Whanganui in August gets highs of 14°C (57°F) during the day and drops to 8°C (46°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Whanganui in August
The city usually sees around 121 hours of sunlight, indicating a moderately sunny period.For Whanganui itself, January, February and March generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Whanganui's climate page.
Whanganui Temperature in August
Min Temperature
8°C (46°F)
Max Temperature
14°C (57°F)
Chance of Rain
51%
Precipitation
107 mm (4.2 in)
Rainy days
15 days
Humidity
84% *
Sunshine
121 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Whanganui typically stay consistent throughout August, with daily highs averaging around 14°C (57°F). Nights are cold, with lows around 5°C (41°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 Whanganui in August
Browse day-by-day weather records for Whanganui spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Whanganui historical weather extremes in August
According to our 32 years of weather records for Whanganui, the following extremes were recorded between 1993 and 2025.
- Whanganui recorded its highest August temperature of 18°C (64°F) on August 31, 1999.
- The coldest August day was on August 25, 2004, with a maximum of 5°C (41°F).
- The coldest night in August in Whanganui was on August 24, 2006, with a minimum of -4°C (25°F).
- Peak precipitation in August occurred on August 18, 2024, when 28 mm (1.1 in) of precipitation was measured.
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 →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Whanganui in August
Pack for changing conditions in Whanganui in August. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Whanganui 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 Whanganui's climate page.
Temperature Rainfall Sunshine Humidity
See the full Whanganui climate overview or explore weather in New Zealand.
