Last updated: February 25, 2025
May in Perth, Australia offers a delightful blend of mild temperatures and refreshing breezes. With a maximum of 29°C (84°F) and an average of 17°C (62°F), the weather is perfect for outdoor activities. The minimum temperature dips to a crisp 7°C (45°F), providing a cozy atmosphere in the evenings. Although May sees about 58 mm (2.3 in) of rain over 8 days, this precipitation contributes to the region's lush landscapes. With humidity levels around 72%, the month strikes a lovely balance between comfortable and invigorating, making it an ideal time to explore the beauty of this captivating city.
In May, Perth begins to transition from the warmth of summer, showcasing a decrease in temperatures. The month features a minimum of 7°C (45°F), providing a cooler start to the day, while the average temperature settles around a comfortable 17°C (62°F). With maximum highs reaching 29°C (84°F), May offers delightful days that often feel quite mild compared to the sizzling summer months. This pattern not only signifies a gradual cooling trend but also invites locals and visitors to enjoy outdoor activities in pleasantly moderate weather, perfect for exploring the vibrant city and its stunning surrounds.
May in Perth, Australia, marks a significant shift in the weather as it experiences an average precipitation of 58 mm (2.3 in) over 8 rainy days. This increase aligns with the typical trend of rising rainfall as autumn transitions into winter, particularly when compared to the preceding months of March and April, both of which received only 21 mm (0.8 in) each. The arrival of May signals the beginning of the wetter months, paving the way for even heavier rainfall in June and July. As the region enjoys the lush greenery brought on by this rainfall, it’s clear that the month serves as a precursor to the more substantial downpours that follow in the cooler season.
As May arrives in Perth, Australia, the humidity begins to climb, reaching 72%, indicative of the transition into the cooler months. This marks a significant increase from April's 70%, suggesting that the region experiences a consistent rise in humidity as autumn wanes. Compared to the early months of the year, where humidity levels hovered around the 52-59% range, May stands out as a pivotal point where moisture levels become more pronounced. Following May, June and July continue this upward trend, stabilizing at 77%, creating a distinctly humid atmosphere. This gradual increase reflects the shift in seasonal weather patterns, emphasizing May as a bridge into Perth's wetter winter months.
In May, Perth experiences a UV Index of 6, categorizing it as high and allowing for a burn time of approximately 25 minutes. This marks a noticeable reduction from the extreme levels of 14 seen in January and February. As autumn settles in, the sun's intensity begins to wane, yet precautions remain essential. With the UV index dropping gradually through the months, from the severe exposure levels earlier in the year to moderate in June and July, May serves as a transitional period where sun safety practices are still relevant. For those looking to plan outdoor activities, knowing the UV levels can ensure a safe and enjoyable experience—more information is available at Perth UV Index.
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In May, Perth experiences a slight dip in sunshine hours, with 279 hours of bright rays gracing the city, a decrease from the previous months of January through April. This trend reflects the transition into winter, as the sunlight begins to wane, paving the way for cooler days ahead. Despite this decline, May remains a vibrant month, offering a pleasant climate that serves as a prelude to the more overcast winter months of June and July. Interestingly, as the year progresses, there's a steady increase in sunshine hours from October through December, suggesting that Perth’s sun-soaked summers are just around the corner, creating a compelling cycle of light that enhances the city’s allure.
In Perth, Australia, the likelihood of enjoying sunny weather tends to decrease as the year progresses into May, with a 45% chance of sunshine. This marks a notable dip from the previous months, where January boasts a 73% chance and February a 70% chance. As autumn sets in, the probabilities continue to wane, hitting their low in April at 54% before slightly rebounding in June. Notably, this trend indicates that while May is one of the cloudier months, Perth's generally sunny disposition returns with vigor in the later spring months. Thus, while the chances of clear skies diminish in May, residents and visitors can eagerly anticipate the sun’s re-emergence as winter approaches.
In May, the daylight duration in Perth, Australia begins to wane, with the sun gracing the skies for 10 hours—a gradual decrease that mirrors the transition from the long, sun-filled days of summer to the cooler embrace of winter. This pattern persists into June, maintaining the same 10-hour span before slowly creeping back up in September when daylight extends to 11 hours. Notably, the first half of the year showcases a uniformity in daylight hours, with both May and the months preceding it experiencing a steady decline that emphasizes the seasonal shift. As the year progresses, the days slowly regain their length, culminating in the invigorating brightness of December. The rhythmic ebb and flow of daylight serves as a reminder of nature's cycles, where each month holds its own charm.
In May, Perth experiences a gentle breeze with an average wind speed of 4.4 m/s (10 mph), marking the transition into the cooler months. This slight uptick from April's more tranquil 4.2 m/s suggests a subtle increase in winds as winter approaches. The wind speeds remain consistent through June, maintaining at 4.4 m/s, before a noticeable spike occurs in July, where the winds surge back to 6.2 m/s. Comparatively, May’s calm winds provide a perfect backdrop for outdoor activities, making it an ideal time to enjoy the mild autumn weather before the seasonal gusts set in. As the year progresses, we see a pattern of fluctuation, with the aftermath of summer's breezy January and February transitioning into a more stable but slightly breezier winter in the following months.
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, the temperatures range from a cooler minimum of 7°C (45°F) to a pleasant average of 17°C (62°F), reaching a maximum of 29°C (84°F). This month experiences moderate rainfall, totaling 58 mm (2.3 in) over roughly 8 days, along with higher humidity levels at 72%. In stark contrast, January boasts much warmer temperatures, with a minimum of 13°C (56°F), an average of 24°C (75°F), and peaks at 37°C (99°F). Interestingly, January is remarkably dry, recording only 31 mm (1.2 in) of precipitation over 0 days and featuring lower humidity at 52%. For a more detailed look at January weather, you can check Perth weather in January.
May and February present contrasting weather patterns, with February generally being hotter and more humid. In February, temperatures range from a minimum of 14°C (57°F) to a maximum of 38°C (101°F), averaging around 24°C (75°F), while May sees cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 29°C (84°F), averaging 17°C (62°F). Both months experience similar precipitation levels of 58 mm (2.3 in); however, rain is more frequent in May, occurring over 8 days compared to just 4 days in February. Humidity levels are also higher in May at 72%, compared to February's 55%, making May feel more comfortable for outdoor activities. For a detailed look at February weather, visit Perth weather in February.
In comparing the weather of March and May, March tends to be warmer with daily temperatures ranging from a minimum of 11°C (53°F) to a maximum of 35°C (96°F) and an average of 23°C (73°F). It also has lower precipitation, totaling only 21 mm (0.8 in) over four days, with a humidity level of 59%. In contrast, May features a cooler temperature range, with lows of 7°C (45°F) and highs reaching 29°C (84°F), an average of 17°C (62°F), and a slightly higher precipitation of 58 mm (2.3 in) over eight days. The humidity increases to 72% in May, indicating a more humid experience compared to March. For more detailed information on March weather, you can read about Perth weather in March.
In comparing the weather patterns of April and May, we see some notable differences. April tends to be warmer overall, with average temperatures reaching 20°C (68°F) and maximums peaking at 34°C (94°F). In contrast, May's average temperature drops to 17°C (62°F), with a maximum of 29°C (84°F). Additionally, April experiences significantly less rainfall, with only 21 mm (0.8 in) over 3 days, while May sees an increase in precipitation to 58 mm (2.3 in) across 8 days. Humidity levels remain relatively similar, with April at 70% and May slightly higher at 72%. For more detailed information, you can check Perth weather in April.
In comparing the weather between May and June, it is evident that June experiences slightly cooler temperatures, with a minimum of 8°C (46°F) compared to May's 7°C (45°F) and a lower average of 15°C (59°F) versus May's 17°C (62°F). The maximum temperatures also dip in June, reaching only 24°C (75°F) compared to May's 29°C (84°F). Rainfall increases significantly in June, with 107 mm (4.2 in) of precipitation over 11 days, compared to 58 mm (2.3 in) over 8 days in May. Additionally, humidity rises from 72% in May to 77% in June, making June feel a bit more damp. For more details, you can check out Perth weather in June.
In May, temperatures can range from a minimum of 7°C (45°F) to a maximum of 29°C (84°F), with an average of 17°C (62°F). The month typically experiences 58 mm (2.3 in) of precipitation over about 8 days, along with a humidity level of 72%. In contrast, July's weather is cooler, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 23°C (73°F) and an average temperature of 15°C (58°F). Additionally, July sees more rainfall, with a total of 115 mm (4.5 in) over 16 days and higher humidity at 77%. For more details on the weather in July, you can refer to Perth weather in July.
May and August exhibit notable differences in weather patterns. May typically boasts milder temperatures, with an average of 17°C (62°F) and a maximum of 29°C (84°F), while August sees slightly cooler averages with highs around 26°C (78°F) and an overall average of 14°C (58°F). Precipitation in August is also higher, totaling 103 mm (4.1 in) over 11 days compared to May’s 58 mm (2.3 in) over 8 days, indicating a wetter month. Humidity levels remain relatively consistent, with May at 72% and August slightly higher at 75%. For more detailed information on August weather, you can check Perth weather in August.
May and September both exhibit mild temperatures, but they differ slightly in their weather characteristics. In May, the average temperature reaches 17°C (62°F), peaking at a maximum of 29°C (84°F), while September sees a cooler average of 15°C (60°F) with a high of 28°C (83°F). Both months experience similar minimum temperatures, starting at around 7°C (45°F) in May and 7°C (44°F) in September. Rainfall is slightly higher in May, with 58 mm (2.3 in) over eight days, compared to 42 mm (1.6 in) over seven days in September. Humidity levels remain relatively stable, hovering around 72% in May and 71% in September. For more detailed weather insights, you can check Perth weather in September.
In May, the weather features mild temperatures with a minimum of 7°C (45°F), an average of 17°C (62°F), and a maximum of 29°C (84°F). This month generally experiences higher humidity at 72% and offers around 58 mm (2.3 in) of rainfall over approximately 8 days. In contrast, October presents slightly warmer conditions, with minimum temperatures of 9°C (48°F), consistent average temperatures of 17°C (63°F), and a maximum reaching 32°C (90°F). October typically sees lower precipitation levels at 41 mm (1.6 in) across 7 days, and the humidity decreases to 63%. For more detailed insights, you can check the weather specifics here: Perth weather in October.
In comparing the weather of May and November, we observe notable differences in temperature and humidity. May features a cooler range with minimum temperatures around 7°C (45°F) and a maximum of 29°C (84°F), averaging 17°C (62°F). This month also sees higher humidity levels at 72%, accompanied by 58 mm (2.3 in) of precipitation over approximately 8 days. In contrast, November experiences warmer conditions, with minimum temperatures starting at 10°C (50°F) and soaring up to 35°C (96°F), averaging 20°C (68°F). Additionally, November is drier, receiving only 26 mm (1.0 in) of rain over just 3 days, and boasts lower humidity at 56%. For more details, you can check Perth weather in November.
May and December in Perth showcase distinctly different weather patterns. In May, temperatures range from a minimum of 7°C (45°F) to a maximum of 29°C (84°F), with an average of 17°C (62°F). This month experiences more rain, with approximately 58 mm (2.3 in) over about eight days, contributing to a humidity level of 72%. In contrast, December is notably warmer, with temperatures soaring from a minimum of 10°C (51°F) up to a blistering maximum of 40°C (104°F), averaging 23°C (73°F). Rainfall is minimal in December, with only 8 mm (0.3 in) spread over just two days, and the humidity drops to 53%. For more details on Perth's December weather, visit Perth weather in December.
As May rolls in, Perth experiences a delightful shift in weather that sets it apart from other months. The temperatures become more moderate, creating a comfortable atmosphere for outdoor activities, while the increase in humidity adds a refreshing touch to the cool breezes. Although precipitation rises slightly with a few rainy days, this contributes to the vibrant landscapes and lush greenery that characterize this time of year. Whether you're indulging in the great outdoors or exploring the city's cultural gems, May offers a unique charm that makes it a wonderful month to visit. To learn more about the broader weather patterns throughout the year, check out Perth Climate.