| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -0.6° | -8.7° | 148.1mm | 19.3 | 0 |
| February | -1° | -9.4° | 132.4mm | 15.2 | 0 |
| March | 2° | -6° | 115.7mm | 15.4 | 3 |
| April | 6.9° | -1.4° | 123mm | 14.5 | 24 |
| May | 13.1° | 2.9° | 98.4mm | 13.9 | 50 |
| June | 18.5° | 8° | 105.8mm | 12.9 | 69 |
| July | 23.6° | 13.3° | 87.4mm | 11 | 78 |
| August | 23.2° | 13.5° | 100.7mm | 11.7 | 77 |
| September | 19.4° | 9.8° | 131.6mm | 12.3 | 73 |
| October | 13° | 4.8° | 148.8mm | 14.3 | 49 |
| November | 7.6° | 0.6° | 155.4mm | 16.3 | 28 |
| December | 2.6° | -4.3° | 178mm | 20.3 | 6 |
January in Sydney averages a daily high of -0.6°C with nights around -8.7°C. Expect roughly 19.3 wet days totalling 148.1mm. A hard month to visit for comfort alone.
February in Sydney averages a daily high of -1°C with nights around -9.4°C. Expect roughly 15.2 wet days totalling 132.4mm. A hard month to visit for comfort alone.
March in Sydney averages a daily high of 2°C with nights around -6°C. Expect roughly 15.4 wet days totalling 115.7mm. A hard month to visit for comfort alone.
April in Sydney averages a daily high of 6.9°C with nights around -1.4°C. Expect roughly 14.5 wet days totalling 123mm. A hard month to visit for comfort alone.
May in Sydney averages a daily high of 13.1°C with nights around 2.9°C. Expect roughly 13.9 wet days totalling 98.4mm. Demanding conditions — pack for it and plan indoor options.
June in Sydney averages a daily high of 18.5°C with nights around 8°C. Expect roughly 12.9 wet days totalling 105.8mm. Generally workable, with some weather to plan around.
July in Sydney averages a daily high of 23.6°C with nights around 13.3°C. Expect roughly 11 wet days totalling 87.4mm. Comfortable conditions for being outdoors all day.
August in Sydney averages a daily high of 23.2°C with nights around 13.5°C. Expect roughly 11.7 wet days totalling 100.7mm. Comfortable conditions for being outdoors all day.
September in Sydney averages a daily high of 19.4°C with nights around 9.8°C. Expect roughly 12.3 wet days totalling 131.6mm. Generally workable, with some weather to plan around.
October in Sydney averages a daily high of 13°C with nights around 4.8°C. Expect roughly 14.3 wet days totalling 148.8mm. Demanding conditions — pack for it and plan indoor options.
November in Sydney averages a daily high of 7.6°C with nights around 0.6°C. Expect roughly 16.3 wet days totalling 155.4mm. A hard month to visit for comfort alone.
December in Sydney averages a daily high of 2.6°C with nights around -4.3°C. Expect roughly 20.3 wet days totalling 178mm. 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. Sydney peaks at 78.
Based on 30 years of records, July–September scores highest for comfort in Sydney, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 23.6°C.
December is the wettest, averaging 178mm of rain across roughly 20.3 wet days.
February is the coolest month, with average daily highs around -1°C.