Last updated: February 26, 2025
September in Sydney, Australia marks the transition from winter to spring, bringing a delightful blend of warm days and cool nights. With a maximum temperature reaching 28°C (83°F) and an average of 16°C (61°F), the month invites residents and visitors alike to enjoy the outdoors. However, September also greets the city with an average precipitation of 49 mm (1.9 in) spread over 8 days, contributing to the lush greenery of the season. The humidity levels hover around 63%, adding a touch of warmth to the crisp spring air, making it a perfect time for exploration and outdoor activities in this vibrant coastal city.
As spring ushers in September in Sydney, temperatures begin to rise, presenting a delightful transition from the cooler winter months. With a minimum of 10°C (50°F) and an average of 16°C (61°F), this month sets the stage for more pleasant weather. The maximum temperature peaks at 28°C (83°F), offering sunny days that beckon locals and visitors to explore the city's vibrant landscape. Compared to the chill of July and August, September marks a significant upswing, making it an ideal time to enjoy outdoor activities and witness the blooming beauty of the season. As the air warms, Sydney comes alive, showcasing the perfect blend of comfortable temperatures and sunny skies.
In September, Sydney experiences a modest precipitation total of 49 mm (1.9 in) spread over 8 days, marking a slight decrease compared to the more significant rainfall in the preceding months. This trend showcases Sydney's transition into spring, as the city begins to shake off the winter chill. While September's rainfall is relatively low compared to March's peak of 185 mm (7.3 in), it remains above the levels recorded in January and April, both of which saw only 42 mm (1.7 in) and 40 mm (1.6 in), respectively. This indicates a gradual shift toward wetter weather, hinting at the nourishing rains that will characterize the coming months.
As Sydney transitions into September, residents experience a welcome dip in humidity, with levels dropping to 63%. This marks a noticeable shift from the steamy heights of the previous months, particularly from April's peak at 75% and May's 74%. After several months of escalating moisture, September offers a brief respite, aligning with the city's descent towards its driest months, where October sees humidity further decreasing to 55%. This trend highlights the cyclical nature of Sydney's climate, where the onset of spring brings not just warmer temperatures, but also a refreshing change in humidity levels, paving the way for sunnier days ahead.
As September rolls into Sydney, the UV Index rises to 8, placing it in the very high exposure category with a burn time of just 15 minutes. This uptick marks a transition from the milder winter months, where the Index hovered around 3 to 6, to a more intense start to spring. Compared to the highest readings of 14 in January and February, the September index signals a crucial reminder for sun safety as longer days invite more time outdoors. With October following at 10, it’s evident that Sydney's UV levels are on an upward trajectory, urging residents and visitors alike to stay vigilant about sun protection. For detailed updates and tips on keeping safe under the Australian sun, visit Sydney UV Index.
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As spring dawns in September, Sydney basks in a glorious 287 hours of sunshine, marking a delightful rise compared to the months that preceded it. This upward trend sets the stage for October's even sunnier embrace, as the city transitions from winter's lingering shadows into the vibrant warmth of spring. The increase in sunlight not only brightens the days but also uplifts spirits, paving the way for outdoor activities and social gatherings. Following the gradual ascent from the cooler months, September’s brilliant sunshine foreshadows the welcoming heat of the approaching summer — a delightful reminder of the abundant beauty that Sydney has to offer throughout the year.
As September rolls into Sydney, the city enjoys a 61% chance of sunny weather, continuing the trend of vibrant spring days. This percentage positions September favorably, slightly below the peak sunny months of April and August, which both boast a notable 68% chance of sunshine. Interestingly, this month follows the typically dreary winter, as July and August kiss goodbye to gloom with a combined sunny average of 61%. The sunny likelihood begins to dip again into the late spring months of October and November, yet September stands proudly as a delightful gateway to warmer months, promising more opportunities for outdoor enjoyment and exploration.
As September rolls in Sydney, a gentle transition occurs in daylight hours, with the city basking in about 11 hours of sunlight. Following the gradually shortening days of winter, this month marks a notable increase from the 9 hours experienced in June. The days lengthen further as spring approaches, hinting at the brighter days ahead during October, when daylight reaches 12 hours. This upward trend reflects the broader pattern seen throughout the year, with January and December offering the longest days at 14 hours. The rhythm of daylight in Sydney beautifully underscores the changing seasons, inviting residents to embrace the warmth of spring as it begins to unfold.
As September rolls in, Sydney experiences a refreshing shift in the winds, boasting an average speed of 5.7 m/s (13 mph). This marks a notable increase from the gentle breezes of April and May, which saw speeds dipping as low as 3.5 m/s (8 mph). The month of September mirrors the bustling pace of March and July, suggesting a seasonal uptick that invigorates both the city's atmosphere and its vibrant outdoor life. Transitioning into spring, the winds not only breathe life into the environment but also hint at the warmer days ahead, inviting Sydneysiders to embrace the outdoors with renewed energy.
The weather in Sydney changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Sydney and find detailed weather information for every month.
September and January exhibit quite contrasting weather patterns. In September, temperatures range from a minimum of 10°C to a maximum of 28°C, with an average of 16°C, creating a mild atmosphere. This month experiences about 49 mm of precipitation over 8 days, and humidity levels sit around 63%. In contrast, January typically boasts warmer temperatures, with a minimum of 16°C and a maximum reaching 34°C, averaging at 23°C. Although January has slightly less precipitation at 42 mm over 9 days, humidity rises slightly to 65%. For more detailed insights, you can refer to Sydney weather in January.
September and February present quite different weather experiences. September typically features mild temperatures with a minimum of 10°C (50°F) and a maximum of 28°C (83°F), making it comfortable for outdoor activities. In contrast, February is noticeably warmer, with minimum temperatures around 17°C (62°F) and highs reaching up to 35°C (95°F). Additionally, February sees significantly higher precipitation, averaging 125 mm (4.9 in) over about 13 days, compared to September's 49 mm (1.9 in) spread over 8 days. Humidity levels are also slightly higher in February at 69%, compared to 63% in September. For more detailed insights, check out Sydney weather in February.
When comparing the weather in September and March, it's clear that March tends to be significantly warmer and wetter. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 28°C (83°F), with an average of 16°C (61°F) and 49 mm of precipitation over about 8 days. In contrast, March features a higher temperature spectrum, with minimums of 15°C (59°F) and maximums reaching 33°C (92°F), averaging 22°C (71°F). Additionally, it experiences much more rainfall, totaling 185 mm (7.3 in) over nearly 18 days. Humidity levels are also slightly elevated in March at 72%, compared to 63% in September. For more specific details, you can check Sydney weather in March.
In comparing the weather of September and April, several notable differences emerge. September features a more moderate temperature range, with minimums around 10°C and maximums reaching 28°C, while April typically sees slightly warmer weather, with minimums at 12°C and maximums peaking at 30°C. Precipitation levels are relatively close, with September receiving 49 mm over 8 days and April experiencing 40 mm over 9 days, indicating a similar frequency of wet days. However, April tends to be more humid, with an average humidity of 75% compared to September's 63%. This shift in weather contributes to the overall feel of the months; for more details about April weather in Sydney, check out Sydney weather in April.
In comparing the weather of September and May, one can observe distinct differences in temperature and precipitation patterns. September enjoys a milder average temperature, ranging from a minimum of 10°C (50°F) to a maximum of 28°C (83°F), while May has slightly cooler temperatures, with a minimum of 8°C (46°F) and a maximum of 24°C (76°F). Both months experience a moderate amount of rainfall, with September recording 49 mm (1.9 in) over 8 days and May experiencing slightly more precipitation at 63 mm (2.5 in) across 9 days. Additionally, humidity levels are higher in May at 74%, compared to 63% in September. For a deeper dive into May's weather specifics, check out Sydney weather in May.
In comparing the weather between September and June, September generally offers warmer temperatures, with a minimum of 10°C and an average of 16°C, peaking at 28°C. In contrast, June is cooler, featuring a minimum temperature of 8°C and an average of 14°C, with a maximum of only 22°C. Additionally, September experiences significantly less precipitation, totaling 49 mm over 8 days, compared to June's 108 mm across 15 days. The humidity levels are also a bit lower in September at 63% compared to June's 72%. For more details about the conditions in June, you can refer to Sydney weather in June.
When comparing the weather in September and July, September generally offers warmer temperatures, with minimums around 10°C (50°F) and maximums reaching up to 28°C (83°F), in contrast to July's cooler range of 6°C (44°F) minimum and a maximum of 23°C (74°F). Precipitation levels are similar, with September experiencing about 49 mm (1.9 in) over 8 days and July slightly higher at 54 mm (2.1 in) across just 6 days. Humidity in September averages at 63%, which is a bit lower than July's 68%, providing a somewhat more comfortable feel as summer approaches. For a closer look at July conditions, you can check Sydney weather in July.
September brings a noticeable shift in temperatures compared to August, with minimums rising to 10°C (50°F) and maximums reaching 28°C (83°F), compared to August's 8°C (46°F) and 22°C (72°F). The average temperature in September is 16°C (61°F), which is warmer than August's 14°C (58°F). Although September sees slightly less precipitation at 49 mm (1.9 in) over 8 days, humidity levels are relatively similar, with September at 63% and August at 67%. For more details on August weather, you can check Sydney weather in August.
In September, the weather features a more variable range with temperatures ranging from a cool 10°C (50°F) to a warm 28°C (83°F), accompanied by moderate humidity at 63%. This month also sees around 49 mm (1.9 in) of precipitation spread over 8 days. Conversely, October brings a slight increase in the minimum and average temperatures, with lows around 12°C (54°F) and highs reaching up to 29°C (84°F). However, this month is marked by higher precipitation totals of 85 mm (3.4 in) across 12 days, and lower humidity at 55%. For more details on the weather in Sydney during this month, check out Sydney weather in October.
September and November present distinct weather patterns. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 28°C (83°F), with an average of 16°C (61°F) and a notable humidity level of 63%. The month experiences around 49 mm (1.9 in) of precipitation over approximately 8 days. In contrast, November boasts higher temperatures, with a minimum of 13°C (56°F) and a maximum of 34°C (94°F), averaging 19°C (67°F). Despite experiencing more precipitation at 85 mm (3.3 in) over 10 days, November is characterized by lower humidity at 57%. For more detailed insights, check Sydney weather in November.
In September, the weather in Sydney is characterized by a moderate temperature range, with minimums around 10°C (50°F) and maxima reaching up to 28°C (83°F). Average temperatures hover around 16°C (61°F) and the area experiences about 49 mm (1.9 in) of precipitation over approximately 8 days, coupled with a humidity level of 63%. In contrast, December brings warmer temperatures, with minimums starting at 15°C (60°F) and maximums climbing to 30°C (87°F). The average temperature rises to 21°C (70°F), and rainfall increases to 78 mm (3.1 in) spread across about 11 days, with humidity slightly higher at 68%. For further insights into the weather conditions in Sydney during December, check this link: Sydney weather in December.
As September rolls in, Sydney experiences a delightful transition from winter's cool embrace to the warmth of spring. With temperatures gradually rising, this month offers a refreshing average that contrasts with the chillier winter months, making it a wonderful time for outdoor activities. Although occasional showers may occur, with about eight days receiving precipitation, the overall humidity remains moderate, creating a pleasant atmosphere. September's blend of mild conditions and blooming landscapes sets the stage for a vibrant season ahead. For more detailed insights into what to expect throughout the year, visit Sydney Climate.