Sydney Weather in January
In January, Sydney averages a high of 26°C (79°F) and a low of 20°C (68°F), from 56 years of daily records (1971–2026).
26°C
Average high
79°F
20°C
Average low
68°F
38°C
Record high
101°F · January 18, 2017
14°C
Record low
57°F · January 19, 1986
What January Is Like in Sydney
- The coldest January reading, 14°C (57°F) on January 19, 1986, has not been matched in 40 years.
- A typical January brings 2.6 days above 30°C (86°F).
- January in Sydney has become 0.8°C (1.4°F) warmer on average: the 2012–2026 average against 1970–1989.
- The warmest January in the record was 2019; the coldest was 1997.
At least 1 mm of rain falls on 28% of January days, and the month averages 115 mm in total.
Warmest: 2019 (29.2°C)Latest: 2026 (24.3°C)10-year averageLong-run average (26.1°C)
Look Up a Day in January
See the weather in Sydney on any January date, year by year.
Source: NOAA GHCN-Daily, Sydney (Observatory Hill) (1971–2020); Sydney Harbour (Wedding Cake W (2020–2026). Averages cover 1971–2026. How we compute this