Sydney in January
January is right in the heart of summer for Sydney, and the weather has a definite personality this time of year.
Expect the mercury to hit around 26.6 degrees during the day and settle at 19.7 degrees after dark. The temperature stays pretty consistent through the day. Comfortable during the day, with evenings that invite a light layer.
At 26.6 degrees, January runs 4.4 degrees above Sydney's annual average of 22.2 degrees.
The rain data says 118mm over 15 days. A decent amount, but not relentless.
Sunshine-wise, January delivers around 21.9 MJ/m2 of daily solar radiation. UV sits in the extreme category. Sunscreen, hat, and sunnies are all essential. You can burn in under 10 minutes.
The Comfort Score for January comes in at 7.8/10, solidly pleasant.
Packing tip: bring a mix of short and long sleeves, waterproof gear, and SPF 50+ sunscreen and a hat.
Check the data table below for the full picture, or compare Sydney in January with another destination.
January at a Glance
Temperature Range
Daily temperature range in January. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- T-shirts and shorts for daytime
- A waterproof jacket or compact umbrella
- Strong sun protection including a hat and SPF 50+
Coming From Overseas?
How January in Sydney stacks up against major cities around the world.
About 19 degrees warmer and considerably wetter.
About 23 degrees warmer and considerably wetter.
About 17 degrees warmer and considerably wetter.
How January Compares
Sydney's monthly climate at a glance. January is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 26.6 | 19.7 | 118mm | 7.8 |
| Feb | 26.5 | 19.5 | 82mm | 7.8 |
| Mar | 25.5 | 17.2 | 59mm | 8.9 |
| Apr | 21.9 | 14.0 | 160mm | 7.2 |
| May | 18.8 | 11.4 | 160mm | 4.2 |
| Jun | 16.0 | 7.7 | 140mm | 2.6 |
| Jul | 16.1 | 8.4 | 38mm | 3.9 |
| Aug | 19.4 | 10.1 | 36mm | 6.7 |
| Sep | 22.2 | 11.0 | 60mm | 9.0 |
| Oct | 21.7 | 12.6 | 41mm | 8.8 |
| Nov | 25.2 | 17.6 | 121mm | 8.7 |
| Dec | 26.8 | 19.1 | 53mm | 8.8 |