| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 19.1° | 9.4° | 89.6mm | 14.7 | 68 |
| February | 19.1° | 8.9° | 80.4mm | 13.5 | 70 |
| March | 17.9° | 7.6° | 82.8mm | 15.4 | 63 |
| April | 15.4° | 5.5° | 86.9mm | 17.4 | 55 |
| May | 12.9° | 4.2° | 104.4mm | 19.6 | 47 |
| June | 10.5° | 2.3° | 83.7mm | 20.1 | 40 |
| July | 9.9° | 0.8° | 85.6mm | 20.8 | 36 |
| August | 11.4° | 2.2° | 75.2mm | 18.7 | 42 |
| September | 13.3° | 4.2° | 94.4mm | 18.2 | 49 |
| October | 14.5° | 5.4° | 95.6mm | 18.3 | 52 |
| November | 15.9° | 6.6° | 87.9mm | 16.8 | 57 |
| December | 18.2° | 8.6° | 79.8mm | 15.8 | 64 |
January in Invercargill averages a daily high of 19.1°C with nights around 9.4°C. Expect roughly 14.7 wet days totalling 89.6mm. Generally workable, with some weather to plan around.
February in Invercargill averages a daily high of 19.1°C with nights around 8.9°C. Expect roughly 13.5 wet days totalling 80.4mm. Generally workable, with some weather to plan around.
March in Invercargill averages a daily high of 17.9°C with nights around 7.6°C. Expect roughly 15.4 wet days totalling 82.8mm. Generally workable, with some weather to plan around.
April in Invercargill averages a daily high of 15.4°C with nights around 5.5°C. Expect roughly 17.4 wet days totalling 86.9mm. Generally workable, with some weather to plan around.
May in Invercargill averages a daily high of 12.9°C with nights around 4.2°C. Expect roughly 19.6 wet days totalling 104.4mm. Demanding conditions — pack for it and plan indoor options.
June in Invercargill averages a daily high of 10.5°C with nights around 2.3°C. Expect roughly 20.1 wet days totalling 83.7mm. Demanding conditions — pack for it and plan indoor options.
July in Invercargill averages a daily high of 9.9°C with nights around 0.8°C. Expect roughly 20.8 wet days totalling 85.6mm. Demanding conditions — pack for it and plan indoor options.
August in Invercargill averages a daily high of 11.4°C with nights around 2.2°C. Expect roughly 18.7 wet days totalling 75.2mm. Demanding conditions — pack for it and plan indoor options.
September in Invercargill averages a daily high of 13.3°C with nights around 4.2°C. Expect roughly 18.2 wet days totalling 94.4mm. Demanding conditions — pack for it and plan indoor options.
October in Invercargill averages a daily high of 14.5°C with nights around 5.4°C. Expect roughly 18.3 wet days totalling 95.6mm. Demanding conditions — pack for it and plan indoor options.
November in Invercargill averages a daily high of 15.9°C with nights around 6.6°C. Expect roughly 16.8 wet days totalling 87.9mm. Generally workable, with some weather to plan around.
December in Invercargill averages a daily high of 18.2°C with nights around 8.6°C. Expect roughly 15.8 wet days totalling 79.8mm. 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. Invercargill peaks at 70.
Based on 30 years of records, December–March scores highest for comfort in Invercargill, balancing daytime temperature against rainfall.
January is the warmest, averaging a daily high of 19.1°C.
May is the wettest, averaging 104.4mm of rain across roughly 19.6 wet days.
July is the coolest month, with average daily highs around 9.9°C.