| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 3.8° | -4.7° | 54.4mm | 9.3 | 20 |
| February | 7.2° | -2.5° | 55.8mm | 8.2 | 36 |
| March | 12.4° | 1.3° | 73.7mm | 9.2 | 56 |
| April | 16.3° | 4.3° | 81mm | 9.4 | 69 |
| May | 21.7° | 9° | 62.3mm | 9.1 | 82 |
| June | 28.4° | 14.7° | 33.3mm | 5 | 84 |
| July | 33.4° | 20.3° | 13.3mm | 3 | 68 |
| August | 31.9° | 19.1° | 25.7mm | 4.8 | 71 |
| September | 26.5° | 13.9° | 38mm | 6 | 88 |
| October | 18.4° | 6.6° | 54.4mm | 7.4 | 80 |
| November | 10.1° | 0.3° | 46.5mm | 7.3 | 51 |
| December | 4.1° | -4.5° | 58.4mm | 9.1 | 21 |
January in Sandy averages a daily high of 3.8°C with nights around -4.7°C. Expect roughly 9.3 wet days totalling 54.4mm. A hard month to visit for comfort alone.
February in Sandy averages a daily high of 7.2°C with nights around -2.5°C. Expect roughly 8.2 wet days totalling 55.8mm. Demanding conditions — pack for it and plan indoor options.
March in Sandy averages a daily high of 12.4°C with nights around 1.3°C. Expect roughly 9.2 wet days totalling 73.7mm. Generally workable, with some weather to plan around.
April in Sandy averages a daily high of 16.3°C with nights around 4.3°C. Expect roughly 9.4 wet days totalling 81mm. Generally workable, with some weather to plan around.
May in Sandy averages a daily high of 21.7°C with nights around 9°C. Expect roughly 9.1 wet days totalling 62.3mm. Comfortable conditions for being outdoors all day.
June in Sandy averages a daily high of 28.4°C with nights around 14.7°C. Expect roughly 5 wet days totalling 33.3mm. Comfortable conditions for being outdoors all day.
July in Sandy averages a daily high of 33.4°C with nights around 20.3°C. Expect roughly 3 wet days totalling 13.3mm. Generally workable, with some weather to plan around.
August in Sandy averages a daily high of 31.9°C with nights around 19.1°C. Expect roughly 4.8 wet days totalling 25.7mm. Generally workable, with some weather to plan around.
September in Sandy averages a daily high of 26.5°C with nights around 13.9°C. Expect roughly 6 wet days totalling 38mm. Comfortable conditions for being outdoors all day.
October in Sandy averages a daily high of 18.4°C with nights around 6.6°C. Expect roughly 7.4 wet days totalling 54.4mm. Comfortable conditions for being outdoors all day.
November in Sandy averages a daily high of 10.1°C with nights around 0.3°C. Expect roughly 7.3 wet days totalling 46.5mm. Demanding conditions — pack for it and plan indoor options.
December in Sandy averages a daily high of 4.1°C with nights around -4.5°C. Expect roughly 9.1 wet days totalling 58.4mm. A hard month to visit for comfort alone.
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. Sandy peaks at 88.
Based on 30 years of records, May–June scores highest for comfort in Sandy, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 33.4°C.
April is the wettest, averaging 81mm of rain across roughly 9.4 wet days.
January is the coolest month, with average daily highs around 3.8°C.