| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 24° | 14.3° | 70.8mm | 7.4 | 85 |
| February | 25.4° | 15.9° | 63.4mm | 7.1 | 86 |
| March | 26.7° | 17.6° | 77.4mm | 7 | 86 |
| April | 28.4° | 19.9° | 96.6mm | 7.2 | 80 |
| May | 30.3° | 22.3° | 118mm | 10.6 | 66 |
| June | 31.6° | 24° | 216.1mm | 16.3 | 52 |
| July | 32.5° | 24.8° | 143.4mm | 15.4 | 48 |
| August | 32.6° | 25° | 222.4mm | 17.9 | 48 |
| September | 31.6° | 24.4° | 212.5mm | 16.5 | 52 |
| October | 29.7° | 22.6° | 149.3mm | 12.2 | 65 |
| November | 27° | 18.9° | 81.8mm | 8.9 | 82 |
| December | 25.1° | 16.5° | 81.6mm | 9.7 | 81 |
January in Wellington averages a daily high of 24°C with nights around 14.3°C. Expect roughly 7.4 wet days totalling 70.8mm. Comfortable conditions for being outdoors all day.
February in Wellington averages a daily high of 25.4°C with nights around 15.9°C. Expect roughly 7.1 wet days totalling 63.4mm. Comfortable conditions for being outdoors all day.
March in Wellington averages a daily high of 26.7°C with nights around 17.6°C. Expect roughly 7 wet days totalling 77.4mm. Comfortable conditions for being outdoors all day.
April in Wellington averages a daily high of 28.4°C with nights around 19.9°C. Expect roughly 7.2 wet days totalling 96.6mm. Comfortable conditions for being outdoors all day.
May in Wellington averages a daily high of 30.3°C with nights around 22.3°C. Expect roughly 10.6 wet days totalling 118mm. Generally workable, with some weather to plan around.
June in Wellington averages a daily high of 31.6°C with nights around 24°C. Expect roughly 16.3 wet days totalling 216.1mm. Demanding conditions — pack for it and plan indoor options.
July in Wellington averages a daily high of 32.5°C with nights around 24.8°C. Expect roughly 15.4 wet days totalling 143.4mm. Demanding conditions — pack for it and plan indoor options.
August in Wellington averages a daily high of 32.6°C with nights around 25°C. Expect roughly 17.9 wet days totalling 222.4mm. Demanding conditions — pack for it and plan indoor options.
September in Wellington averages a daily high of 31.6°C with nights around 24.4°C. Expect roughly 16.5 wet days totalling 212.5mm. Demanding conditions — pack for it and plan indoor options.
October in Wellington averages a daily high of 29.7°C with nights around 22.6°C. Expect roughly 12.2 wet days totalling 149.3mm. Generally workable, with some weather to plan around.
November in Wellington averages a daily high of 27°C with nights around 18.9°C. Expect roughly 8.9 wet days totalling 81.8mm. Comfortable conditions for being outdoors all day.
December in Wellington averages a daily high of 25.1°C with nights around 16.5°C. Expect roughly 9.7 wet days totalling 81.6mm. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Wellington peaks at 86.
Based on 30 years of records, November–April scores highest for comfort in Wellington, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 32.6°C.
August is the wettest, averaging 222.4mm of rain across roughly 17.9 wet days.
January is the coolest month, with average daily highs around 24°C.