Rottnest Island Sunshine Hours by Month

To truly understand a climate, we must look at its sunshine. This page shows the total number of hours of direct sunlight per month and the average hours per day in Rottnest Island, Western Australia, Australia. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

Sunshine in Rottnest Island varies greatly throughout the year. The sunniest month, January, reaches an impressive 355 hours, while June, the darkest month, offers only 178 hours. The total annual amount of sun is 3224 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Rottnest Island. While January receives considerable daily sunshine with up to 11.8 hours, June marks the darkest time of the year, where sunshine is scarce with only 5.9 hours of sunlight per day.

Rottnest Island vs Major Cities: Sunshine Compared

Rottnest Island enjoys an average of 3224 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, there are approximately 2801 hours of sunshine annually, highlighting its warm and sunny Mediterranean climate.

In contrast, Juneau, Alaska, receives only about 1523 hours of sunshine per year and is known for its very short days in winter and frequently overcast conditions.

In Shanghai, China, the annual average sunshine is 1780 hours, with cloudier weather in summer.

Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.

Related Climate Data for Rottnest Island

June, Rottnest Island’s wettest month, receives 20 mm (0.8 in) of rainfall and has a maximum daytime temperature of 20°C (68°F). During the driest month December you can expect a temperature of 24°C (75°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Rottnest Island Precipitation page.