| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 9.2° | — | 27.5mm | 3.8 | 58 |
| February | 11.1° | — | 52.4mm | 6.3 | 59 |
| March | 15.6° | — | 82.5mm | 8.5 | 69 |
| April | 21° | — | 88.2mm | 9.1 | 82 |
| May | 25.6° | — | 90.5mm | 7.9 | 84 |
| June | 28.1° | — | 113.6mm | 11.2 | 73 |
| July | 31.8° | — | 144.1mm | 12.7 | 55 |
| August | 33.3° | — | 128.2mm | 11.2 | 52 |
| September | 28.7° | — | 168.4mm | 11.2 | 71 |
| October | 22.7° | — | 170.7mm | 9.6 | 81 |
| November | 17.1° | — | 52.4mm | 6.2 | 78 |
| December | 11.6° | — | 42.9mm | 4.9 | 63 |
January in Kai averages a daily high of 9.2°C. Expect roughly 3.8 wet days totalling 27.5mm. Generally workable, with some weather to plan around.
February in Kai averages a daily high of 11.1°C. Expect roughly 6.3 wet days totalling 52.4mm. Generally workable, with some weather to plan around.
March in Kai averages a daily high of 15.6°C. Expect roughly 8.5 wet days totalling 82.5mm. Generally workable, with some weather to plan around.
April in Kai averages a daily high of 21°C. Expect roughly 9.1 wet days totalling 88.2mm. Comfortable conditions for being outdoors all day.
May in Kai averages a daily high of 25.6°C. Expect roughly 7.9 wet days totalling 90.5mm. Comfortable conditions for being outdoors all day.
June in Kai averages a daily high of 28.1°C. Expect roughly 11.2 wet days totalling 113.6mm. Generally workable, with some weather to plan around.
July in Kai averages a daily high of 31.8°C. Expect roughly 12.7 wet days totalling 144.1mm. Generally workable, with some weather to plan around.
August in Kai averages a daily high of 33.3°C. Expect roughly 11.2 wet days totalling 128.2mm. Demanding conditions — pack for it and plan indoor options.
September in Kai averages a daily high of 28.7°C. Expect roughly 11.2 wet days totalling 168.4mm. Generally workable, with some weather to plan around.
October in Kai averages a daily high of 22.7°C. Expect roughly 9.6 wet days totalling 170.7mm. Comfortable conditions for being outdoors all day.
November in Kai averages a daily high of 17.1°C. Expect roughly 6.2 wet days totalling 52.4mm. Comfortable conditions for being outdoors all day.
December in Kai averages a daily high of 11.6°C. Expect roughly 4.9 wet days totalling 42.9mm. Generally workable, with some weather to plan around.
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. Kai peaks at 84.
Based on 30 years of records, April–May scores highest for comfort in Kai, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 33.3°C.
October is the wettest, averaging 170.7mm of rain across roughly 9.6 wet days.
January is the coolest month, with average daily highs around 9.2°C.