September in Wellington averages a daily high of 22.4°C with nights around 7.3°C. Expect roughly 6.7 wet days totalling 37.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Wellington is August–November.
Based on MALMESBURY, SF (33.4km), 1995–2024. 25 years of September data.