Whanganui weather and climate in 2025
Day
14 °C
Night
6 °C
Sea
13 °C
Precipitation
82 mm
in month
Rainy days
15 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
84 %
Day
14 °C
Night
6 °C
Sea
13 °C
Precipitation
82 mm
in month
Rainy days
15 days
in month
Daylight
10 hours
average
Sunshine
4 hours
average
Humidity
84 %
Overview: Whanganui
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January weather
January welcomes Whanganui with warm summer days, with average high temperatures peaking at 22 °C (72 °F). This is the perfect time for enjoying the great outdoors. With a moderate number of wet days at 10 days and average precipitation of 70 mm (2.76 in), it's advisable to keep a raincoat handy.
February weather
As the summer continues in February, temperatures slightly rise to an average high of 22 °C (72 °F). The humidity remains high at 79 %, which may add a sensation of warmth. Wet days decrease to an average of 8 days, so outdoor activities are still on the menu.
March weather
March in Whanganui signals the end of summer with slightly cooler temperatures averaging 21 °C (70 °F). It's a transitional month with an increase in wet days averaging nearly 10 days. Expect a bit more rain with an average of 80 mm (3.16 in) precipitations.
April weather
April sees a further drop in temperature, with average highs sitting around 19 °C (66 °F). The weather remains unpredictable with slightly increased rainfall averaging 72 mm (2.84 in) and winding up to 11 days of wet days.
May weather
The arrival of May in Whanganui brings cooler days with average high temperatures around 16 °C (61 °F) and increased rainfall with 14 days likely to be wet and an average precipitation of 93 mm (3.67 in).
June weather
As winter approaches in June, the average high temperature dips to 14 °C (57 °F) in Whanganui. The humidity increases to 86 %, and the daylight hours shorten to an average of 3 of sun. Expect 15 days of rain, which means packing waterproof gear is essential.
July weather
July marks the heart of winter in Whanganui with the coolest daytime high temperatures averaging just 13 °C (55 °F). Rainy days peak at around 15 days, with precipitation reaching 88 mm (3.47 in).
August weather
August in Whanganui shows early signs of spring, though average high temperatures remain on the cool side at 14 °C (57 °F), and there's still a significant chance of rain with 15 days of precipitation.
September weather
Spring is palpable in September with a slight rise in temperatures to an average high of 15 °C (60 °F). While wet days start to decrease to 15 days, the mixture of sun and showers is characteristic of the season's unpredictability.
October weather
With the progression of spring in October, Whanganui enjoys average high temperatures climbing to 17 °C (62 °F). Rain seems to linger with an average of 14 days experiencing rainfall and 92 mm (3.63 in) of precipitation recorded.
November weather
As Whanganui transitions into the warmer months, November brings higher temperatures with day averages at 19 °C (66 °F). There is a decline in wet days to 12 days, and the sun graces the town with about 7 of daylight.
December weather
December marks the beginning of summer in Whanganui, with average daytime temperatures reaching a pleasant 21 °C (69 °F). The town experiences around 13 days of rain, and the humidity levels hover at 76 %.
FAQs
How are the temperatures in Whanganui during January?
January in Whanganui graces you with warm temperatures averaging 22 °C (72 °F), providing a comfortable climate to start the year.
Is February a wet month in Whanganui?
February is not particularly wet in Whanganui, with an average of 8 days rainy days and 68 mm (2.67 in) of rainfall.
What is the average daytime temperature in Whanganui in March?
Daytime in Whanganui during March sees a comfortable average high temperature of 21 °C (70 °F), perfect for enjoying the last of summer warmth.
Are temperatures in Whanganui cool in April?
April's temperatures in Whanganui are moderately cool with daytime highs around 19 °C (66 °F), signaling the onset of autumn.
What's the average daytime temperature in Whanganui in May?
In May, Whanganui's days are definitely cooler, with average high temperatures of 16 °C (61 °F), and evenings can be quite chilly.
How much does it rain in Whanganui in June?
June can be quite wet in Whanganui; prepare for plenty of rain with around 15 days expected to bring precipitation.
What are the temperature trends in Whanganui during July?
July brings the coldest temperatures of the year in Whanganui with daytime highs averaging 13 °C (55 °F). Nighttime may require an extra blanket.
Is August in Whanganui still considered winter?
Yes, August in Whanganui is technically winter, with cooler average daytime highs of 14 °C (57 °F) and frequent rain.
What is typical weather like in Whanganui during September?
September's typical weather in Whanganui includes milder temperatures averaging 15 °C (60 °F), and occasional sunny breaks amid frequent showers.
Does Whanganui get warm in October?
October in Whanganui is pleasantly warm with average highs of 17 °C (62 °F) - a noticeable change as spring takes hold.
How warm does it get in Whanganui in November?
November sees Whanganui warming up with comfortable daytime temperatures averaging 19 °C (66 °F) as summer is just around the corner.
What should I expect from Whanganui's weather in December?
December in Whanganui is typically warm and inviting with an average high of 21 °C (69 °F), perfect for early summer outdoor ventures.
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