Climate Overview
The climate in Wanganui Airport is temperate. The average annual temperature is 15°C and approximately 1195mm of precipitation falls per year. Wanganui Airport receives a notable amount of rainfall throughout the year, including during its driest month. Wanganui Airport is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: February, January, March. The coldest months are August, July, June, when temperatures can drop to 9°C.
Temperature
Wanganui Airport sees moderate temperature variation throughout the year, ranging from 9°C to 21°C. February is the warmest month, though highs remain moderate at 21°C with a mean of 19°C. August is the coolest month, with minimum temperatures around 9°C and an average of 11°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between March and April, with a 2°C shift in average temperatures.
Precipitation
Wanganui Airport is a moderately rainy area, receiving approximately 1195mm of precipitation annually, which averages out to around 100mm per month. The wettest month is April, averaging 123mm of rainfall. July and May also tend to see above-average precipitation. The driest month is January, with just 70mm. That's 54mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Wanganui Airport is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
84 days until Spring
It is currently winter in Wanganui Airport, which began on June 21, 2026. Wanganui Airport is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in February at around 21°C, while the coldest stretch bottoms out in August near 9°C. Spring is next, beginning on September 23, 2026 — 84 days from now.
Spring
Temperatures range from 10 to 17°C. Rainfall is heavy, totalling around 303mm across the season with a monthly average of 101mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 21°C. Precipitation is moderate at around 227mm for the season, averaging 76mm per month. Winds are generally light, averaging 6km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 12 to 20°C. Rainfall is heavy, totalling around 331mm across the season with a monthly average of 110mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 9 to 14°C. Rainfall is heavy, totalling around 333mm across the season with a monthly average of 111mm. Winds are generally light, averaging 6km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Wanganui Airport is during January, February, March and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 78mm per month. By contrast, August can be quite cold with temperatures dropping to 9°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.
Monthly Climate Data
The table below shows monthly climate averages for Wanganui Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
