November to April are the warmer months and the best time to visit; average maximum temperatures during this time hover around 20°C (68°F). During the colder, wetter months, May to August, the daily temperature lurks around 12°C (54°F).
Wellington is renowned for being windy - the city's maritime climate catches the blustery, persistent and often chilly winds that whistle through the Cook Strait.
| Month | Temp (°C) | Rainfall (mm) | Humidity (%) | Sunshine (hours) |
| Jan | 14 - 19 | 7.9 | ||
| Feb | 14 - 19 | 7.9 | ||
| Mar | 13 - 18 | 8.6 | ||
| Apr | 12 - 16 | 9.9 | ||
| May | 9 - 13 | 12.2 | ||
| Jun | 8 - 12 | 12.4 | ||
| Jul | 7 - 11 | 14.0 | ||
| Aug | 7 - 11 | 12.2 | ||
| Sep | 8 - 13 | 9.9 | ||
| Oct | 9 - 14 | 10.4 | ||
| Nov | 11 - 16 | 8.9 | ||
| Dec | 13 - 18 | 8.9 |