Last updated: February 25, 2025
Experience the unique climate of Rottnest Island, Australia in August, where the weather is characterized by mild temperatures and significant rainfall. During this month, daily highs reach around 21°C (70°F), while average temperatures sit comfortably at 16°C (61°F), dipping to a cool 11°C (52°F) at night. Visitors should be prepared for frequent showers, with 138 mm (5.4 in) of precipitation expected over 15 days. The air remains humid at approximately 75%, creating a lush environment that complements the island's stunning landscapes. Whether you’re hunting for quokkas or exploring coastal trails, August on Rottnest Island offers a refreshing escape amidst nature’s bounty.
In August, temperatures on Rottnest Island start to cool down as winter approaches, with minimums dropping to around 11°C (52°F) and averages hovering at 16°C (61°F). This month typically sees maximum temperatures reaching 21°C (70°F), indicating a mild but refreshing climate perfect for exploring the island's stunning landscapes. As summer gives way to the cooler temperatures of spring, August is characterized by a gentle transition, with the days becoming gradually brighter and hinting at the warmer temperatures to come. Visitors can enjoy the moderate weather while witnessing the changing scenery, making it an ideal time for outdoor activities and wildlife encounters.
August on Rottnest Island, Australia, experiences a notable peak in precipitation, with 138 mm (5.4 in) of rain falling over 15 days. This marks a slight decline from July's wet conditions, where rainfall reached 143 mm (5.6 in) across a longer span of 19 days. The month continues a trend of increased moisture that begins in June, where average precipitation jumps significantly, showcasing the island's winter season. As the year progresses into September, precipitation tapers off dramatically to 49 mm (1.9 in), hinting at a transition towards drier months. Overall, August exemplifies a pivotal moment in Rottnest Island's climate, balancing between the remnants of winter's rain and the impending spring's dryness.
In August, Rottnest Island experiences a humidity level of 75%, marking a slight decline from the peak observed in June and July, which both recorded 77%. This gradual decrease reflects a broader trend observed throughout the winter months, where humidity rises to its highest points before beginning to taper off as spring approaches. As the island transitions from the cooler months towards September—when humidity drops further to 71%—August serves as a key indicator of the island’s shifting climate, balancing the lingering moisture of winter with the promise of warmer, drier days ahead.
In August, Rottnest Island experiences a high UV Index of 6, with a burn time of approximately 25 minutes. This marks a slight increase from the moderate levels recorded in the previous months of June and July, indicating that while summer's extreme UV rays have subsided, the sun's intensity remains significant. As spring approaches, the UV Index is poised to rise further, so it’s essential to practice sun safety during outdoor activities. For more detailed information on sun safety and trends, visit Rottnest Island UV Index.
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As winter gives way to spring, August in Rottnest Island presents a delightful transition with 285 hours of sunshine—a notable increase from the lower light of June and July. Though the month still holds onto some winter chill, the sun begins to reclaim its prominence, offering more warmth and light compared to the preceding months. This gradual rise in sunlight sets the stage for the vibrant spring months ahead, showcasing a steady transition into a brighter, more inviting atmosphere. With each passing month, the trend toward increased daylight becomes evident, culminating in the radiant 384 hours of sunshine by December, making Rottnest a sought-after destination for those eager to bask in the sun.
When exploring the likelihood of sunny weather in August on Rottnest Island, it's noteworthy that the chance of sun stands at 57%. This places August in a moderate position compared to other months; while summer months like January and February enjoy much higher probabilities at 72%, the weather begins to cool down as autumn approaches. Following August, September sees a promising 69% chance of sun, indicating a gradual improvement. Overall, while August might not be the sunniest month, it certainly offers a pleasant balance of warm days alongside the striking beauty of Rottnest Island's natural landscape.
In August, Rottnest Island experiences a consistent 10 hours of daylight, maintaining the trend of shorter days that began in mid-summer. As the warmest months fade, daylight gradually wanes from a peak of 13 hours in January and February down to 10 hours from June through August. This period reflects a steady rhythm in the island's seasonal cycle, as daylight begins to lengthen again in September, foreshadowing the return of brighter days ahead. Visitors can enjoy the tranquil beauty of winter while knowing that the sun will soon start to linger a little longer each day.
In August, Rottnest Island experiences a refreshing average wind speed of 6.9 m/s (16 mph), which continues the trend of mild breezes typical for the winter months. Following the peak gusts of 9.3 m/s (21 mph) in July, the wind speed slightly dips, but remains comfortably breezy. This pattern reflects a general seasonal variability, with winter presenting the highest winds in July, while August sees a gentler flow. As summer approaches, the wind tends to stabilize around 7.1 m/s (16 mph) in both October and November. Overall, the pleasant winds in August contribute to the island's charm, making it a perfect time for outdoor activities, from beach strolls to cycling adventures.
The weather in Rottnest Island changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Rottnest Island and find detailed weather information for every month.
August and January showcase distinct differences in weather patterns. In August, temperatures range from a minimum of 11°C (52°F) to a maximum of 21°C (70°F), with an average of 16°C (61°F). This month sees considerable rainfall, with 138 mm (5.4 in) over about 15 days and a high humidity level of 75%. In contrast, January experiences warmer weather with minimum temperatures around 15°C (59°F) and a maximum of 29°C (85°F), averaging 22°C (71°F). Precipitation drops significantly to just 35 mm (1.4 in) over a single day, accompanied by lower humidity at 52%. This stark contrast makes January a much drier and warmer month compared to August. For more detailed weather insights, check out Rottnest Island weather in January.
In comparing the weather between August and February, notable differences emerge. August tends to be cooler, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 21°C (70°F), accompanied by higher precipitation levels of 138 mm (5.4 in) over approximately 15 days. In contrast, February offers warmer conditions, with temperatures averaging from a minimum of 16°C (61°F) to a maximum of 31°C (88°F). February also experiences significantly less rainfall, totaling only 62 mm (2.5 in) over about 4 days, and lower humidity at 55%. For more detailed insights into February weather on Rottnest Island, check out Rottnest Island weather in February.
When comparing the weather in August and March, notable differences emerge. August experiences cooler temperatures, with an average of 16°C (61°F) and maximums reaching just 21°C (70°F), while March is considerably warmer with average temperatures around 22°C (72°F) and highs soaring to 30°C (86°F). Precipitation also varies significantly; August sees frequent rain over approximately 15 days, accumulating to 138 mm (5.4 in), whereas March is much drier, with only 19 mm (0.7 in) spread across about 4 days. Additionally, humidity levels are higher in August at 75%, compared to a more comfortable 59% in March. For more details, you can check Rottnest Island weather in March.
When comparing the weather in August and April, August tends to be cooler and wetter. In August, the temperatures range from a minimum of 11°C (52°F) to a maximum of 21°C (70°F), while April experiences slightly warmer temperatures, ranging from 13°C (56°F) to 27°C (81°F). Additionally, August sees significantly higher precipitation, with 138 mm (5.4 in) over 15 days, compared to April's mild 25 mm (1.0 in) over just 3 days. The humidity levels are relatively close, with August at 75% and April at 70%. For more detailed weather information, you can check Rottnest Island weather in April.
When comparing the weather in August and May, notable differences emerge in temperature and precipitation patterns. August experiences slightly cooler temperatures, with averages around 16°C (61°F) and maximums reaching 21°C (70°F), while May is warmer, boasting an average of 18°C (66°F) and highs of 24°C (76°F). In terms of precipitation, August is significantly wetter, receiving 138 mm (5.4 in) over 15 days, compared to May's 80 mm (3.1 in) over just 10 days. Humidity levels remain relatively high in both months, with August at 75% and May at 72%. For more specific weather conditions, check out Rottnest Island weather in May.
In comparing the weather of August and June, both months exhibit mild temperatures, but June tends to be slightly warmer on average, with a higher maximum temperature of 22°C (72°F) compared to August's 21°C (70°F). Additionally, June has a higher average temperature of 17°C (63°F) versus August's 16°C (61°F). However, August experiences slightly less rainfall, with 138 mm (5.4 in) over 15 days, compared to June's 158 mm (6.2 in) over 13 days. Humidity levels are also fairly similar, with August at 75% and June at 77%. For more detailed information on June weather, you can check out Rottnest Island weather in June.
In comparing the weather between July and August, we see that July tends to be slightly warmer, with an average temperature of 17°C (62°F) compared to August's 16°C (61°F). Both months have the same maximum temperature of 21°C (70°F), but August experiences slightly cooler minimum temperatures, dropping to 11°C (52°F) versus July's 12°C (54°F). Precipitation levels are relatively close, with July receiving 143 mm (5.6 in) over 19 days and August recording 138 mm (5.4 in) across 15 days. Humidity is also quite similar, with July at 77% and August at 75%. For more detailed insight into July weather, you can visit Rottnest Island weather in July.
August and September weather exhibit some notable differences. In August, temperatures range from a minimum of 11°C (52°F) to a maximum of 21°C (70°F), with an average of 16°C (61°F). August is characterized by higher precipitation levels, receiving 138 mm (5.4 in) of rain over 15 days, contributing to a humidity level of 75%.
In contrast, September sees a slight dip in minimum temperatures at 10°C (50°F), but a more significant increase in maximum temperatures, reaching 24°C (75°F), while maintaining the same average temperature of 16°C (62°F). This month also enjoys considerably less rain, with only 49 mm (1.9 in) over 10 days and a decrease in humidity to 71%. For more detailed weather information, you can check Rottnest Island weather in September.
In comparing the weather between August and October, we see a notable shift in temperatures and precipitation levels. August tends to be cooler, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 21°C (70°F), while October experiences warmer averages, with highs reaching up to 26°C (80°F). Additionally, October enjoys significantly less rainfall, averaging only 49 mm (1.9 in) over just 7 days, compared to August's 138 mm (5.4 in) spread over 15 days. Humidity also decreases in October, dropping to 63% from August's 75%. For more details, check out the Rottnest Island weather in October.
In comparing August and November weather, August tends to be cooler and wetter, with average temperatures ranging from 11°C (52°F) to 21°C (70°F) and experiencing significant rainfall at 138 mm (5.4 in) over 15 days. In contrast, November enjoys warmer weather, featuring average temperatures from 13°C (55°F) to 27°C (82°F), and is notably drier, with only 27 mm (1.1 in) of precipitation across just 3 days. Additionally, humidity levels drop from 75% in August to a more comfortable 56% in November, contributing to a more pleasant outdoor experience. For more detailed information, you can check Rottnest Island weather in November.
When comparing the weather in August and December, we see notable differences in temperature and precipitation. August experiences cooler temperatures, with a minimum of 11°C and an average of 16°C, while December offers warmer conditions, with lows of 14°C and an average temperature reaching 21°C. Precipitation also varies significantly; August is quite rainy with 138 mm over 15 days, whereas December sees much less rain, totaling only 8 mm over just 2 days. Additionally, humidity levels are higher in August at 75%, compared to a drier 53% in December. For a detailed look at the December weather specifics, you can visit Rottnest Island weather in December.
August in Rottnest Island marks a transition into the cooler season, with noticeably higher humidity levels and increased precipitation compared to the drier summer months. The island experiences more frequent showers, leading to lush landscapes and vibrant flora, making it a picturesque time for nature enthusiasts. With temperatures ranging from a gentle 11°C to a comfortable 21°C, August invites visitors to enjoy outdoor adventures, albeit with the chance of occasional rainfall. For those seeking to understand how these climatic features affect their stay, more detailed information can be found at Rottnest Island Climate.