| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 23.3° | 11.2° | 37.6mm | 8.1 | 84 |
| February | 22.7° | 10.7° | 42.7mm | 7.9 | 84 |
| March | 20.5° | 8.6° | 46.9mm | 9.8 | 80 |
| April | 17.6° | — | 52.5mm | 11.4 | 70 |
| May | 14.9° | — | 62.8mm | 14.5 | 55 |
| June | 12.1° | — | 73.7mm | 15.6 | 45 |
| July | 11.7° | — | 75.4mm | 16 | 43 |
| August | 12.8° | — | 57.7mm | 14.5 | 48 |
| September | 14.9° | — | 38.7mm | 10.3 | 63 |
| October | 16.9° | 4.8° | 47.8mm | 10.5 | 69 |
| November | 19.6° | 7.5° | 40.8mm | 9 | 81 |
| December | 21.3° | 10.3° | 52.3mm | 9.2 | 82 |
January in Christchurch averages a daily high of 23.3°C with nights around 11.2°C. Expect roughly 8.1 wet days totalling 37.6mm. Comfortable conditions for being outdoors all day.
February in Christchurch averages a daily high of 22.7°C with nights around 10.7°C. Expect roughly 7.9 wet days totalling 42.7mm. Comfortable conditions for being outdoors all day.
March in Christchurch averages a daily high of 20.5°C with nights around 8.6°C. Expect roughly 9.8 wet days totalling 46.9mm. Comfortable conditions for being outdoors all day.
April in Christchurch averages a daily high of 17.6°C. Expect roughly 11.4 wet days totalling 52.5mm. Generally workable, with some weather to plan around.
May in Christchurch averages a daily high of 14.9°C. Expect roughly 14.5 wet days totalling 62.8mm. Generally workable, with some weather to plan around.
June in Christchurch averages a daily high of 12.1°C. Expect roughly 15.6 wet days totalling 73.7mm. Demanding conditions — pack for it and plan indoor options.
July in Christchurch averages a daily high of 11.7°C. Expect roughly 16 wet days totalling 75.4mm. Demanding conditions — pack for it and plan indoor options.
August in Christchurch averages a daily high of 12.8°C. Expect roughly 14.5 wet days totalling 57.7mm. Demanding conditions — pack for it and plan indoor options.
September in Christchurch averages a daily high of 14.9°C. Expect roughly 10.3 wet days totalling 38.7mm. Generally workable, with some weather to plan around.
October in Christchurch averages a daily high of 16.9°C with nights around 4.8°C. Expect roughly 10.5 wet days totalling 47.8mm. Generally workable, with some weather to plan around.
November in Christchurch averages a daily high of 19.6°C with nights around 7.5°C. Expect roughly 9 wet days totalling 40.8mm. Comfortable conditions for being outdoors all day.
December in Christchurch averages a daily high of 21.3°C with nights around 10.3°C. Expect roughly 9.2 wet days totalling 52.3mm. 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. Christchurch peaks at 84.
Based on 30 years of records, November–March scores highest for comfort in Christchurch, balancing daytime temperature against rainfall.
January is the warmest, averaging a daily high of 23.3°C.
July is the wettest, averaging 75.4mm of rain across roughly 16 wet days.
July is the coolest month, with average daily highs around 11.7°C.