Last updated: February 25, 2025
In May, Perth experiences a delightful blend of cool and crisp weather, with maximum temperatures reaching around 20°C (68°F) and an average settling at a refreshing 9°C (49°F). While nighttime can bring the temperature down to a brisk -2°C (30°F), residents enjoy an enticing shift in the season. This month sees 77 mm (3.0 in) of rainfall spread over 9 days, contributing to a humidity level of approximately 83%. Embrace the charm of autumn in Perth, as the cooler temperatures and occasional showers create a perfect backdrop for cozy gatherings and outdoor adventures alike.
In May, temperatures in Perth, Australia, take a notable dip as the city transitions deeper into autumn. The month's average temperature settles around 9°C (49°F), with minimums occasionally plunging to -2°C (30°F). Despite these cooler conditions, daytime highs can still reach a pleasant 20°C (68°F), providing a mild respite for outdoor enthusiasts. This month marks a significant shift from the warmth of summer, as the landscape transforms, inviting a cozy atmosphere ideal for enjoying Perth's vibrant cultural scene. As the chill sets in, the balance between crisp mornings and temperate afternoons creates an inviting backdrop for both locals and visitors alike.
May in Perth marks a significant peak in precipitation, with 77 mm (3.0 in) of rain falling over 9 days—the highest for the month in comparison to its preceding months. This uptick hints at a transition towards the wetter winter months, as April's rainfall was notably less at 58 mm (2.3 in). The trend reflects a gradual increase in moisture leading into June, which experiences a slight decline to 55 mm (2.2 in) despite maintaining the same number of rain days. As the seasons shift, May serves as a reminder of the region's variability, showcasing a blend of autumn warmth and the approaching chill of winter, making it a pivotal month for precipitation in Perth.
As autumn transitions into winter in Perth, Australia, May marks a significant increase in humidity, reaching 83%—the highest level of the year alongside June. This rise in moisture content is part of a noticeable trend, with humidity gradually climbing from 77% in April to 83% in both May and June, before peaking at 84% in July. The pattern indicates that as the seasons shift, Perth experiences a more humid atmosphere, preparing its residents for the cooler, damp months ahead. This consistent increase highlights a seasonal rhythm that defines the local climate.
As the seasons transition in Perth, Australia, May sees a notable dip in the UV Index, measuring 3 and categorized as moderate. This decline follows the extreme levels of January and February, where UV Index values soared to 13 and 11, presenting only 10 minutes of burn time. By April, the levels started to decrease, and in May, sun-seekers can enjoy up to 30 minutes in the sun without significant risk. Looking ahead, the UV Index continues to drop, reaching 2 in both June and July, indicating safer sun exposure. For more detailed insights on UV levels throughout the year, check out Perth UV Index.
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In Perth, Australia, the arrival of May brings a noticeable dip in sunshine hours, with the city basking in 217 hours of sunlight—markedly less than the sun-drenched heights of the earlier months. While January shines with a impressive 297 hours, the trend appears to shift as summer fades into autumn, culminating in April's 249 hours before reaching May's total. Despite this decrease, Perth still benefits from a modest amount of bright days compared to the winter months that follow, which see a further decline to 191 hours in June. Overall, the gradual transition from the vibrant summer glow to the subtler light of late autumn highlights the fluctuating but enduring charm of Perth’s sunshine throughout the year.
In May, Perth enjoys a 44% chance of sunny weather, following a trend of increasing sunlight as the region transitions from the cooler months. After a relatively mild April, where the likelihood of sunshine peaks at 50%, May maintains a solid outlook for clear skies. This slight drop from April is usual as the winter months approach, with the sun's presence diminishing significantly in June, where the probability plummets to just 19%. As the seasons change, the warm embrace of Perth's early autumn still delivers enjoyable days, making May a delightful time for outdoor activities before the chill of winter sets in.
In Perth, Australia, the transition into May brings a noticeable shift in daylight hours as the city bids farewell to the long, sun-soaked days of summer. With 14 hours in January slowly tapering down to 9 hours by May, the diminishing daylight reflects the gradual onset of winter. Following May, daylight remains steady at 9 hours through June and July, before beginning to climb once more in August. This cyclical pattern reveals a striking seasonal rhythm, showcasing Perth’s vibrant climate as it embraces the shorter days of late autumn while hinting at the longer days to come in spring.
In May, Perth experiences a gentle breeze with an average wind speed of 2.8 m/s (6 mph), reflecting a slight dip from the more robust gusts of April, which reached 3.0 m/s (7 mph). This month marks a transitional period as it follows a gradual increase in wind speeds from the earlier months, peaking in August at 3.7 m/s (8 mph). Despite the mild winds of May, the overall trend in Perth indicates a dynamic shift towards more energetic breezes in the coming winter months. Such fluctuations contribute to the region's pleasant weather, perfectly aligning with the vibrant outdoor culture that Perth is celebrated for.
The weather in Perth changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Perth and find detailed weather information for every month.
May and January present contrasting weather patterns. In May, temperatures range from a chilly minimum of -2°C (30°F) to a comfortable maximum of 20°C (68°F), with an average of 9°C (49°F). This month also experiences significant precipitation, averaging 77 mm (3.0 in) over about 9 days, accompanied by high humidity at 83%. In stark contrast, January enjoys warmer temperatures with a minimum of 4°C (40°F), an average of 17°C (64°F), and a peak of 33°C (91°F). Rain is less frequent during this month, with only 50 mm (2.0 in) of precipitation across 5 days, and lower humidity at 69%. For more detailed information, you can visit Perth weather in January.
In comparing the weather between May and February, notable differences can be observed. May typically experiences cooler temperatures, ranging from a minimum of -2°C (30°F) to a maximum of 20°C (68°F), with an average of 9°C (49°F). In contrast, February is warmer, with temperatures varying from a minimum of 3°C (37°F) to a scorching maximum of 33°C (92°F) and an average of 16°C (61°F). Additionally, May tends to be wetter with 77 mm (3.0 inches) of precipitation over 9 days, while February sees slightly less rain at 68 mm (2.7 inches) over 8 days. Humidity levels are higher in May at 83%, compared to 68% in February. For more detailed insights on the weather in February, you can visit Perth weather in February.
In comparing the weather of May and March, we see distinct differences in temperature and humidity. May typically experiences cooler temperatures, ranging from a minimum of -2°C (30°F) to a maximum of 20°C (68°F), with an average of 9°C (49°F). Additionally, May has a higher humidity level at 83% and receives more precipitation, averaging 77 mm (3.0 in) over 9 days. In contrast, March boasts warmer temperatures, with a minimum of 1°C (35°F) and a maximum of 31°C (88°F), accompanied by a lower average temperature of 15°C (59°F). The humidity in March is also lower at 72%, and it experiences slightly less precipitation at 68 mm (2.7 in) over the same number of days. For more details, you can check Perth weather in March.
In comparing the weather of April and May, we see some notable differences. April boasts a slightly higher average temperature of 12°C (53°F), with a maximum reaching 25°C (77°F), while May's average drops to 9°C (49°F) and maxes out at 20°C (68°F). Additionally, April experiences less precipitation at 58 mm (2.3 in) over 7 days compared to May's 77 mm (3.0 in) over 9 days. Humidity levels are also lower in April at 77% compared to May’s 83%. For more details, you can check out Perth weather in April.
May and June present distinct weather patterns, with May generally being milder. In May, temperatures range from a minimum of -2°C (30°F) to a maximum of 20°C (68°F), with an average of 9°C (49°F). The month sees higher precipitation at 77 mm (3.0 in) across 9 days, maintaining a humidity level of 83%. In contrast, June experiences slightly cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 15°C (60°F), averaging at 7°C (45°F). Additionally, June has less rainfall at 55 mm (2.2 in) over the same number of days, but humidity remains consistent at 83%. For more detailed insights on June weather, you can visit Perth weather in June.
May and July exhibit notable differences in weather patterns. In May, temperatures range from a minimum of -2°C (30°F) to a maximum of 20°C (68°F), with an average of 9°C (49°F). The month experiences moderate precipitation of 77 mm (3.0 in) over 9 days, with a humidity level of 83%. In contrast, July sees slightly cooler temperatures, featuring a minimum of -4°C (26°F) and a maximum of 14°C (58°F), with an average of 6°C (44°F). Precipitation increases to 89 mm (3.5 in) spread over 12 days, while humidity remains relatively consistent at 84%. For a detailed look at July weather, you can visit Perth weather in July.
In comparing the weather in May and August, we see a noticeable shift in temperatures and precipitation patterns. May enjoys a milder average temperature of 9°C (49°F), with a maximum of 20°C (68°F), while August is cooler, with an average of 7°C (45°F) and a maximum of only 15°C (60°F). Precipitation levels are somewhat similar, with May receiving 77 mm (3.0 in) over 9 days compared to August's 70 mm (2.8 in) spread over 12 days. Humidity remains consistent at 83% for both months, creating a similarly damp atmosphere. For more details on August's weather, you can visit Perth weather in August.
May and September present a transition in weather patterns, with May generally showcasing slightly warmer temperatures. In May, the temperatures range from a minimum of -2°C (30°F) to a maximum of 20°C (68°F), while September's temperatures vary from -3°C (26°F) to a maximum of 21°C (69°F). Precipitation levels in May are slightly higher at 77 mm (3.0 in) over about 9 days, compared to September's 68 mm (2.7 in) across 11 days. Humidity levels remain relatively high in both months, with May at 83% and September at 80%. For a more detailed look at September's weather, refer to Perth weather in September.
May and October present distinct weather characteristics, marked by variations in temperature and precipitation. In May, temperatures range from a chilly -2°C (30°F) to a warmer max of 20°C (68°F), with an average of 9°C (49°F). The month sees about 77 mm (3.0 in) of precipitation over approximately 9 days, and humidity sits at a relatively high 83%. In contrast, October experiences slightly milder conditions with temperatures ranging from -1°C (31°F) to a high of 25°C (78°F), averaging around 11°C (52°F). This month receives a bit more rainfall, totaling 85 mm (3.4 in) over 12 days, but exhibits lower humidity levels at 76%. For a detailed look at October weather patterns, check out Perth weather in October.
May and November present distinct weather patterns. In May, temperatures range from a chilly minimum of -2°C (30°F) to a mild maximum of 20°C (68°F), with an average of 9°C (49°F). This month experiences more precipitation, totaling 77 mm (3.0 in) over approximately 9 days, and higher humidity at 83%. In contrast, November offers warmer temperatures, with minimums starting at 0°C (32°F) and rising to a maximum of 28°C (83°F), averaging around 13°C (56°F). Additionally, November sees less rainfall at 56 mm (2.2 in) over the same number of days, along with slightly lower humidity at 76%. For more details on the weather in November, you can check Perth weather in November.
May and December present contrasting weather conditions. In May, temperatures range from a chilly minimum of -2°C (30°F) to a comfortable maximum of 20°C (68°F), with an average of 9°C (49°F). The month experiences significant humidity at 83% and receives about 77 mm (3.0 in) of precipitation over 9 days. In contrast, December boasts a milder temperature range, with a minimum of 3°C (37°F) and a maximum reaching 33°C (92°F), resulting in an average of 15°C (60°F). This month has lower humidity at 71% and slightly less precipitation at 71 mm (2.8 in) over just 7 days. For more detailed insights, visit Perth weather in December.
As May unfolds in Perth, the weather begins to shift notably from the warmer months, ushering in cooler temperatures and increased humidity. With a maximum of 20°C and an average low of 9°C, residents experience a refreshing drop that contrasts sharply with the summer heat. The month also brings its fair share of rain, with precipitation occurring about nine days on average, contributing to a significant total for the month. This transition not only marks the arrival of autumn but also sets the stage for the lush greenery that follows, making it an ideal time for enjoying the natural beauty of the region. For a complete understanding of what to expect throughout the year, explore the detailed insights on Perth Climate.