Sydney weather in January
In January, Sydney has an average high of 25 °C78 °F and an average low of 20 °C68 °F, with about 83 mm3.3 in of precipitation. January is the warmest month of the year and ranks 4th for precipitation.
How January compares with other months
Compared with December, January is 1.6 °C2.8 °F warmer on average and wetter by 11 mm0.4 in. Compared with February, January is about the same temperature and drier by 51 mm2.0 in. Daylight lasts about 14.2 hours around the middle of the month. Average relative humidity is 75% and the average cloud amount 59%.
Is January a good time to visit Sydney?
Yes — January is one of the most comfortable months to visit Sydney by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in January
For Sydney in January, pack light summer clothes such as T-shirts, shorts or light dresses.
January in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Sydney | 2578 | 2068 | 833.3 |
| Liverpool | 3290 | 1864 | 883.4 |
| Central Coast | 2984 | 1967 | 913.6 |
| Richmond (New South Wales) | 3391 | 1865 | 943.7 |
| Wollongong | 3086 | 1865 | 803.2 |
| Newcastle | 2679 | 2169 | 833.3 |
| Nowra | 2882 | 1966 | 823.2 |
| Maitland | 3492 | 1966 | 773.0 |
| Orange | 2984 | 1558 | 632.5 |
Nearby places that are more than 1 °C1.8 °F warmer in January: Liverpool, Central Coast, Richmond (New South Wales) and Wollongong.
Other months in Sydney
- January25 °C78 °F / 20 °C68 °F
- February25 °C77 °F / 20 °C69 °F
- March24 °C75 °F / 19 °C67 °F
- April22 °C71 °F / 17 °C63 °F
- May19 °C67 °F / 15 °C58 °F
- June17 °C63 °F / 13 °C55 °F
- July16 °C61 °F / 11 °C52 °F
- August17 °C63 °F / 12 °C53 °F
- September19 °C67 °F / 13 °C56 °F
- October21 °C70 °F / 15 °C59 °F
- November23 °C73 °F / 17 °C62 °F
- December24 °C75 °F / 18 °C65 °F
Frequently asked questions
How warm is Sydney in January?
In January the average high in Sydney is 25 °C (78 °F) and the average low is 20 °C (68 °F).
Does it rain a lot in Sydney in January?
On average about 83 mm (3.3 in) of precipitation falls in January; it ranks 4th of the 12 months.
Is January the warmest month in Sydney?
Yes. January is the warmest month in Sydney. The coldest month is July, with an average low of 11 °C (52 °F).
How long is the day in Sydney in January?
In the middle of January the day in Sydney lasts about 14.2 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Sydney in January?
The average relative humidity in January is about 75%. Combined with warm days, it can feel muggy.
How cloudy is Sydney in January?
On average about 59% of the sky is covered by cloud in January. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.