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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
Rocks, turquoise-blue waters, and white sands on the Pinky Beach on Rottnest Island, with the Bathurst Lighthouse, in Perth, Australia
Climate and monthly weather forecast
Weather in January
January, the same as December, is a moderately hot summer month in Rottnest Island, Australia, with temperature in the range of an average high of 26.5°C (79.7°F) and an average low of 19.1°C (66.4°F). The commencement of January introduces an average high-temperature of a still moderately hot 26.5°C (79.7°F), closely mirroring the preceding month. Weather in January »
Weather in February
The last month of the summer, February, is also a moderately hot month in Rottnest Island, Australia, with an average temperature varying between 27.4°C (81.3°F) and 19.5°C (67.1°F). Rottnest Island records the warmest temperatures in February, averaging a high of 27.4°C (81.3°F) and a low of 19.5°C (67.1°F). February's average heat index is computed to be 29°C (84.2°F). Weather in February »
Weather in March
March, the first month of the autumn in Rottnest Island, is also a moderately hot month, with an average temperature varying between 26.1°C (79°F) and 18.7°C (65.7°F). The advent of March denotes an average high-temperature of a still moderately hot 26.1°C (79°F), subtly different from February's 27.4°C (81.3°F). Weather in March »
Weather in April
April, the same as March, is a moderately hot autumn month in Rottnest Island, Australia, with an average temperature varying between 23.8°C (74.8°F) and 17.3°C (63.1°F). The transition into April marks the average high-temperature at a still moderately hot 23.8°C (74.8°F), differing minimally from March's 26.1°C (79°F). Weather in April »
Weather in May
The last month of the autumn, May, is also an agreeable month in Rottnest Island, Australia, with an average temperature fluctuating between 15.3°C (59.5°F) and 21.1°C (70°F). At the onset of May, Rottnest Island records an average high-temperature of an agreeable 21.1°C (70°F), showing little deviation from the preceding month. Weather in May »
Weather in June
The first month of the winter, June, is still a refreshing month in Rottnest Island, Australia, with an average temperature varying between 18.7°C (65.7°F) and 13.4°C (56.1°F). June is marked by an average high-temperature of an enjoyable 18.7°C (65.7°F), almost identical to the preceding month. Weather in June »
Weather in July
July, like June, in Rottnest Island, Australia, is another refreshing winter month, with an average temperature varying between 17.7°C (63.9°F) and 12.3°C (54.1°F). With average high and low temperatures of 17.7°C (63.9°F) and 12.3°C (54.1°F) respectively, July is Rottnest Island's coldest month. Weather in July »
Weather in August
August, the last month of the winter in Rottnest Island, is another comfortable month, with an average temperature fluctuating between 12.5°C (54.5°F) and 18°C (64.4°F). In Rottnest Island, August's average high-temperature stands at a still refreshing 18°C (64.4°F), closely related to the preceding month. Weather in August »
Weather in September
September, the first month of the spring in Rottnest Island, is also an enjoyable month, with an average temperature fluctuating between 18.9°C (66°F) and 12.9°C (55.2°F). In September, Rottnest Island experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 18°C (64.4°F) in August to a still refreshing 18.9°C (66°F). Weather in September »
Weather in October
October in Rottnest Island, Australia, is a pleasant spring month, with an average temperature fluctuating between 20.6°C (69.1°F) and 14°C (57.2°F). October reports an average high-temperature of an agreeable 20.6°C (69.1°F), slightly varied from September's 18.9°C (66°F). Weather in October »
Weather in November
The last month of the spring, November, is a moderately hot month in Rottnest Island, Australia, with temperature in the range of an average low of 16°C (60.8°F) and an average high of 23.1°C (73.6°F). During November, Rottnest Island records an average high-temperature of a warm 23.1°C (73.6°F), marking a slight divergence from October's 20.6°C (69.1°F). Weather in November »
Weather in December
December, the first month of the summer in Rottnest Island, is still a warm month, with an average temperature fluctuating between 25°C (77°F) and 17.6°C (63.7°F). December's weather records an average high-temperature of a still moderately hot 25°C (77°F), showing little deviation from November. Weather in December »
Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How much does it rain in Rottnest Island?
In Rottnest Island, during the entire year, the rain falls for 106.1 days and collects up to 560mm (22.05") of precipitation.
What month is the hottest in Rottnest Island?
Rottnest Island's February weather, with an average high temperature of 27.4°C (81.3°F) and an average low temperature of 19.5°C (67.1°F), tends to be the warmest of the year.
What is the driest month in Rottnest Island?
February is the month with the least rainfall. Rain falls for 1.8 days and accumulates 7mm (0.28") of precipitation.
What are the least humid months in Rottnest Island?
The months with the lowest humidity in Rottnest Island, Australia, are March and May, with an average relative humidity of 60%.
What is the month with the shortest days in Rottnest Island?
With an average of 10h and 6min of daylight, June has the shortest days of the year.
What is the coldest month in Rottnest Island?
Rottnest Island experiences its average lowest temperatures in July, reaching a peak of 17.7°C (63.9°F) and a minimum of 12.3°C (54.1°F).
What is the most humid month in Rottnest Island?
The months with the highest humidity are July through September, with an average relative humidity of 64%.
What is the wettest month in Rottnest Island?
July is the month with the most rainfall. Rain falls for 17.4 days and accumulates 114mm (4.49") of precipitation.
When are the longest days in Rottnest Island?
The month with the longest days in Rottnest Island is December, with an average of 14h and 12min of daylight.
Is there Daylight Saving Time (DST) in Rottnest Island?
Rottnest Island, Australia, does not observe Daylight Saving Time (DST). AWST timezone is used over the entire year.
Average temperature
Rottnest Island, Australia
The warmest month (with the highest average high temperature) is February (27.4°C).
The month with the lowest average high temperature is July (17.7°C).
The month with the highest average low temperature is February (19.5°C).
The coldest month (with the lowest average low temperature) is July (12.3°C).
Average humidity
Rottnest Island, Australia
The months with the highest relative humidity are July, August and September (64%).
The months with the lowest relative humidity are March and May (60%).
Average rainfall
Rottnest Island, Australia
- Average rainfall in January:
12.1mm - Average rainfall in February:
7.3mm - Average rainfall in March:
17.9mm - Average rainfall in April:
35.1mm - Average rainfall in May:
76mm - Average rainfall in June:
98.1mm
- Average rainfall in July:
114.2mm - Average rainfall in August:
84.6mm - Average rainfall in September:
53.8mm - Average rainfall in October:
29.4mm - Average rainfall in November:
20.4mm - Average rainfall in December:
10.7mm
The wettest month (with the highest rainfall) is July (114.2mm).
The driest month (with the least rainfall) is February (7.3mm).
Average rainfall days
Rottnest Island, Australia
- Average rainfall days in January:
2.4 days - Average rainfall days in February:
1.8 days - Average rainfall days in March:
3.4 days - Average rainfall days in April:
7.7 days - Average rainfall days in May:
11.4 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
16.6 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
7.8 days - Average rainfall days in November:
5.5 days - Average rainfall days in December:
3.7 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (1.8 days).
Average daylight
Rottnest Island, Australia
- Average daylight in January:
14h and 0min - Average daylight in February:
13h and 1min - Average daylight in March:
12h and 2min - Average daylight in April:
11h and 2min - Average daylight in May:
10h and 3min - Average daylight in June:
10h and 1min
- Average daylight in July:
10h and 2min - Average daylight in August:
11h and 0min - Average daylight in September:
11h and 5min - Average daylight in October:
12h and 5min - Average daylight in November:
13h and 4min - Average daylight in December:
14h and 1min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).
