| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 26.9° | 20° | 93.7mm | 10.1 | 80 |
| February | 26.8° | 20° | 125.9mm | 11.3 | 77 |
| March | 25.8° | 18.5° | 120.2mm | 12.1 | 76 |
| April | 23.7° | 15.4° | 119.1mm | 9.8 | 80 |
| May | 20.9° | 12.3° | 106.3mm | 9.1 | 82 |
| June | 18.3° | 10° | 142.9mm | 11.2 | 72 |
| July | 18° | 8.9° | 81mm | 8.5 | 77 |
| August | 19.4° | 9.7° | 81.4mm | 7 | 84 |
| September | 21.8° | 12.4° | 64.7mm | 7.6 | 85 |
| October | 23.4° | 14.7° | 70.7mm | 9 | 82 |
| November | 24.4° | 16.7° | 92mm | 10.7 | 79 |
| December | 25.9° | 18.5° | 64.4mm | 9.2 | 82 |
January in Sydney averages a daily high of 26.9°C with nights around 20°C. Expect roughly 10.1 wet days totalling 93.7mm. Comfortable conditions for being outdoors all day.
February in Sydney averages a daily high of 26.8°C with nights around 20°C. Expect roughly 11.3 wet days totalling 125.9mm. Comfortable conditions for being outdoors all day.
March in Sydney averages a daily high of 25.8°C with nights around 18.5°C. Expect roughly 12.1 wet days totalling 120.2mm. Comfortable conditions for being outdoors all day.
April in Sydney averages a daily high of 23.7°C with nights around 15.4°C. Expect roughly 9.8 wet days totalling 119.1mm. Comfortable conditions for being outdoors all day.
May in Sydney averages a daily high of 20.9°C with nights around 12.3°C. Expect roughly 9.1 wet days totalling 106.3mm. Comfortable conditions for being outdoors all day.
June in Sydney averages a daily high of 18.3°C with nights around 10°C. Expect roughly 11.2 wet days totalling 142.9mm. Generally workable, with some weather to plan around.
July in Sydney averages a daily high of 18°C with nights around 8.9°C. Expect roughly 8.5 wet days totalling 81mm. Comfortable conditions for being outdoors all day.
August in Sydney averages a daily high of 19.4°C with nights around 9.7°C. Expect roughly 7 wet days totalling 81.4mm. Comfortable conditions for being outdoors all day.
September in Sydney averages a daily high of 21.8°C with nights around 12.4°C. Expect roughly 7.6 wet days totalling 64.7mm. Comfortable conditions for being outdoors all day.
October in Sydney averages a daily high of 23.4°C with nights around 14.7°C. Expect roughly 9 wet days totalling 70.7mm. Comfortable conditions for being outdoors all day.
November in Sydney averages a daily high of 24.4°C with nights around 16.7°C. Expect roughly 10.7 wet days totalling 92mm. Comfortable conditions for being outdoors all day.
December in Sydney averages a daily high of 25.9°C with nights around 18.5°C. Expect roughly 9.2 wet days totalling 64.4mm. 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. Sydney peaks at 85.
Based on 30 years of records, July–February scores highest for comfort in Sydney, balancing daytime temperature against rainfall.
January is the warmest, averaging a daily high of 26.9°C.
June is the wettest, averaging 142.9mm of rain across roughly 11.2 wet days.
July is the coolest month, with average daily highs around 18°C.