The best time to go to Whanganui is during the summer months, from December to February, when the weather is warm and pleasant for outdoor activities.During this period, you can expect average daily temperatures ranging from 20°C to 25°C (68°F to 77°F) with plenty of sunshine and minimal rainfall. This makes it ideal for exploring the Whanganui River by jet boat or kayak, visiting the numerous parks and gardens, or enjoying a walk along the city's riverside paths. For visitors who enjoy water-based activities and spending time outdoors, the summer offers the most comfortable conditions.Autumn, from March to May, also offers pleasant weather with slightly cooler temperatures, typically between 15°C and 20°C (59°F to 68°F), and fewer crowds. This is a good time for couples seeking a more relaxed experience, as the vibrant autumn colors make for scenic walks and drives, particularly along the river and in the surrounding countryside.Conversely, winter (June to August) brings cooler temperatures and more rain, while spring (September to November) can be quite windy.