| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 27.2° | 14.6° | 40.3mm | 7.9 | 83 |
| February | 27.1° | 14.6° | 46.3mm | 6.8 | 86 |
| March | 24.5° | 12.8° | 43.2mm | 7.8 | 84 |
| April | 20.4° | 9.8° | 57.3mm | 10.1 | 80 |
| May | 16.8° | 8.1° | 50.8mm | 11.3 | 67 |
| June | 14.2° | 6.2° | 52.4mm | 12.3 | 57 |
| July | 13.6° | 5.6° | 45.2mm | 14.4 | 51 |
| August | 15° | 6.2° | 53mm | 13.9 | 56 |
| September | 17.6° | 7.4° | 52.6mm | 13 | 66 |
| October | 20.1° | 8.8° | 57.4mm | 11.8 | 76 |
| November | 23° | 11° | 68.9mm | 10.5 | 79 |
| December | 25° | 12.5° | 59.4mm | 8.9 | 82 |
January in Reservoir averages a daily high of 27.2°C with nights around 14.6°C. Expect roughly 7.9 wet days totalling 40.3mm. Comfortable conditions for being outdoors all day.
February in Reservoir averages a daily high of 27.1°C with nights around 14.6°C. Expect roughly 6.8 wet days totalling 46.3mm. Comfortable conditions for being outdoors all day.
March in Reservoir averages a daily high of 24.5°C with nights around 12.8°C. Expect roughly 7.8 wet days totalling 43.2mm. Comfortable conditions for being outdoors all day.
April in Reservoir averages a daily high of 20.4°C with nights around 9.8°C. Expect roughly 10.1 wet days totalling 57.3mm. Comfortable conditions for being outdoors all day.
May in Reservoir averages a daily high of 16.8°C with nights around 8.1°C. Expect roughly 11.3 wet days totalling 50.8mm. Generally workable, with some weather to plan around.
June in Reservoir averages a daily high of 14.2°C with nights around 6.2°C. Expect roughly 12.3 wet days totalling 52.4mm. Generally workable, with some weather to plan around.
July in Reservoir averages a daily high of 13.6°C with nights around 5.6°C. Expect roughly 14.4 wet days totalling 45.2mm. Demanding conditions — pack for it and plan indoor options.
August in Reservoir averages a daily high of 15°C with nights around 6.2°C. Expect roughly 13.9 wet days totalling 53mm. Generally workable, with some weather to plan around.
September in Reservoir averages a daily high of 17.6°C with nights around 7.4°C. Expect roughly 13 wet days totalling 52.6mm. Generally workable, with some weather to plan around.
October in Reservoir averages a daily high of 20.1°C with nights around 8.8°C. Expect roughly 11.8 wet days totalling 57.4mm. Comfortable conditions for being outdoors all day.
November in Reservoir averages a daily high of 23°C with nights around 11°C. Expect roughly 10.5 wet days totalling 68.9mm. Comfortable conditions for being outdoors all day.
December in Reservoir averages a daily high of 25°C with nights around 12.5°C. Expect roughly 8.9 wet days totalling 59.4mm. 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. Reservoir peaks at 86.
Based on 30 years of records, November–April scores highest for comfort in Reservoir, balancing daytime temperature against rainfall.
January is the warmest, averaging a daily high of 27.2°C.
November is the wettest, averaging 68.9mm of rain across roughly 10.5 wet days.
July is the coolest month, with average daily highs around 13.6°C.