January weather forecast
Sydney, Australia

The year in Sydney commences under the auspices of high temperatures and a considerable amount of daylight. Clear skies are plentiful, providing ample hours for outdoor activities. However, Sydney's high temperature of 25.9°C (78.6°F) in January, balanced with a humidity level of 62%, does require residents and visitors alike to stay hydrated during their ventures. Beach-goers will also find the sea temperature welcoming at 23.3°C (73.9°F). The long, vibrant, sun-soaked days make January a particularly enjoyed period in the Sydney calendar.

Temperature

January, with an average high of 25.9°C (78.6°F) and a low of 18.7°C (65.7°F), signifies the warmest month of the year in Sydney.

Humidity

In January, the average relative humidity in Sydney, Australia, is 62%.

Rainfall

In Sydney, in January, during 12.2 rainfall days, 102mm (4.02") of precipitation is typically accumulated. In Sydney, during the entire year, the rain falls for 143.4 days and collects up to 1212mm (47.72") of precipitation.

Sea temperature

In January, the average sea temperature in Sydney is 23.3°C (73.9°F).
Note: If cold is not your friend, swimming at 23.3°C (73.9°F) might be daunting. But the right mix of sunshine, wind, and external temperature can make a difference. Although wetsuits are not essential, they can enhance the swimming experience.

Daylight

The average length of the day in January is 14h and 7min.
On the first day of January in Sydney, Australia, sunrise is at 5:47 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:01 pm AEDT.

Sunshine

In January, the average sunshine is 7.6h.

UV index

The months with the highest UV index are January and December, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 12 during January translates into the following directions:
Execute all vital precautions. Preventing sun damage is of utmost importance. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Stay sun-safe by applying a sunscreen of at least 30 SPF. It's crucial for preventing sunburn and protecting the immune system. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.