Weather in Sydney in January 2025
- January is usually the hottest month of the year in Sydney;
Average weather
Average temperature in Sydney in January
Going from a maximum of +30°C during the day to a minimum of +15°C during the night, the temperature in January averages around +25°C.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +26°C to +26°C.
Is Sydney warm or cold in January?
Sydney is typically warm in January.
Maximum temperatures go up compared to the previous month from +25°C to +26°C. The minimum temperature also goes up from +18°C to +20°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
January is the hottest month in Sydney, here is the comparison with other months:
Water temperature in Sydney in January
Water in Sydney in January is Comfortable. It varies from +21°C to +25°C, with an average of +23°C. This is almost similar to the air temperature, which averages +26°C.
The water temperature in January is one of the warmest of the entire year:
Can you swim in Sydney in January?
Climate in Sydney in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +25°C | +26°C | +25°C | ||||
| Min. temperature | ||||||
| +11°C | +13°C | +12°C | ||||
| Max. temperature | ||||||
| +41°C | +44°C | +40°C | ||||
| Rainfall | ||||||
| 75 mm | 79 mm | 100 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +22°C | +23°C | +24°C | ||||
| Humidity | ||||||
| 68% | 71% | 72% | ||||
| Air pressure | ||||||
| 1012 HPa | 1012 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 7 | 6 | 4 | ||||
| Cloudy days | ||||||
| 7 | 7 | 5 | ||||
| Rainy days | ||||||
| 15 | 15 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
January weather is still as good as in December. It’s getting warmer as January arrives. The average maximum temperature goes up from +25°C to +26°C during the day. Prepare for more rain. Average rainfall goes from 75 mm to 79 mm. Humidity rises from 68% to 71%. The average wind speed doesn’t change much during January, staying around 4 m/s. The days becoming less sunny, going from 7 sunny days in December to 6 in January.
February brings much the same weather, it remains good.
Wind
The average wind speed is 6 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Sydney is gradually increasing during January, going from 5 m/s to 8 m/s over the course of the month.
Rain
How was the weather last January in Sydney?
Climate Change over Years
The climate in Sydney in January has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+20°C) and the highest in 2019 (+23°C). The driest year was 2006 with only 423 mm of rainfall, and the wettest year was 2022 with 2786 mm.
FAQ
Is January a good time to visit Sydney?
Can you sunbathe in Sydney in January?
Can you swim in Sydney in January?
Is Sydney rainy in January?
Is it sunny in Sydney in January?
Other cities in Australia
Monthly weather in Sydney
Source of the data
For this page, we’ve looked at the typical weather in Sydney, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.