Last updated: February 25, 2025
In September, Mona Vale, Australia experiences a delightful transition into spring, with maximum temperatures reaching 28°C (83°F) and an average of 16°C (61°F). While the weather is generally pleasant, with an average humidity of 63%, residents can expect about 49 mm (1.9 in) of rainfall spread across 8 days. This month beautifully balances warmth and occasional showers, making it an ideal time for outdoor activities and enjoying the natural beauty of the region.
In September, Mona Vale transitions into spring, offering a refreshing change from the cooler winter months. With temperatures ranging from a minimum of 10°C (50°F) to a comfortable maximum of 28°C (83°F), the month showcases a gentle rise in warmth, inviting residents and visitors alike to indulge in outdoor activities. The average temperature settles around 16°C (61°F), indicating a gradual shift toward more pleasant conditions. As the days grow longer and milder, this vibrant coastal area sees a delightful blend of cool breezes and sunny afternoons, setting the perfect stage for nature walks and beach outings. Overall, September marks a significant warming trend, hinting at the bright and balmy days of summer ahead.
In September, Mona Vale experiences a moderate precipitation total of 49 mm (1.9 in) over 8 days, marking a slight increase from the dry winter months. This rainfall, while relatively low compared to the heavier downpours of March and February, sets the stage for the transitioning seasons. As the region moves from winter into spring, this consistent yet modest precipitation highlights the beginning of a gradual upward trend in rainfall leading into the richer, wetter months ahead. Overall, September serves as a refreshing bridge, preparing the landscape for the lush beauty of spring that follows.
In Mona Vale, Australia, September marks a noticeable dip in humidity, with levels averaging at 63%—the lowest since the wetter months preceding it. This decline continues the trend seen from mid-year, as the humidity has progressively decreased since April's peak of 75%. Following September, October further reduces humidity to 55%, indicating the start of a drier season. This pattern highlights a transition to a more comfortable climate, moving away from the high humidity often experienced in the cooler months, providing residents and visitors a refreshing reprieve as they welcome the warmer spring days ahead.
In September, Mona Vale experiences a UV Index of 8, placing it in the very high exposure category, with a burn time of just 15 minutes. As the transition from winter to spring unfolds, UV levels begin to rise, reflecting notable trends in seasonal changes. The UV Index steadily increases from June’s lower readings, where it dips to 3, to the upcoming peak months of December and January, which fluctuate between indices of 14 and 13, classified as extreme. Residents and visitors should remain vigilant, as the sun's intensity begins to ramp up, making sun protection essential to prevent overexposure. For more information, check out the detailed Mona Vale UV Index.
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In September, Mona Vale, Australia, basks in 287 hours of brilliant sunshine, marking a delightful transition into spring. As the days grow longer and warmer, this month stands out as a bright precursor to the sun-drenched summer months ahead. Notably, September's sunlight surpasses both the winter months and early spring, setting the stage for an impressive October with 297 hours and an even more radiant November, which basks in 305 hours. This upward trend in sunlight not only invigorates the coastal landscape but also invites residents and visitors alike to embrace outdoor adventures, making the arrival of spring in Mona Vale a truly uplifting experience.
In Mona Vale, Australia, September emerges as a month with a 61% chance of sunny weather, indicating a pleasing transition into spring. This uptick in sunshine follows the pattern set by the preceding winter months, which enjoyed a higher likelihood of bright days, particularly August at 68%. As the seasons shift, September not only maintains a favorable chance of sun but also hints at the end of the drearier months, moving away from the lower percentages seen in late spring and early summer. This trend showcases a promising outlook for those seeking outdoor activities, making September a delightful time to enjoy the warm, sunlit landscapes of Mona Vale.
As September graces Mona Vale, Australia, the days start to lengthen again, bringing an average of 11 hours of daylight—a modest increase from the shorter days of winter. This transitional month bridges the gap between the cooler season and the warm embrace of spring, marking a shift as daylight gradually returns. Following the pattern of the preceding months, September's daylight hours hint at the approach of summer, as the sunlight steadily rises from 9 hours in June to 12 hours by October. The rhythmic cycle of the seasons is palpable, inspiring a sense of renewal and anticipation for the vibrant days ahead.
As September rolls into Mona Vale, the coastal breeze picks up, with average wind speeds reaching 5.7 m/s (13 mph)—a noticeable increase from the preceding months. This uptick signals the transition into spring, breathing life into the vibrant landscape. Throughout the year, the winds exhibit a distinct rhythm, with April recording the calmest conditions at 3.5 m/s (8 mph), clearly indicating a seasonal shift. After a dip in May and October, when winds moderate again to 4.6 m/s (10 mph), the consistent breezes in July and September demonstrate a pattern of invigorating gusts that invigorate both locals and visitors. The recurring winds in this idyllic region not only enhance its scenic beauty but also create an ideal environment for outdoor activities, making it a prime time to embrace the refreshing coastal charm of Mona Vale.
The weather in Mona Vale 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 Mona Vale and find detailed weather information for every month.
In comparing the weather between September and January, September generally experiences cooler temperatures, with a minimum of 10°C (50°F) and an average of 16°C (61°F), while January is notably warmer, with minimum temperatures of 16°C (62°F) and averages around 23°C (74°F). The maximum temperature in January can reach 34°C (93°F), significantly higher than September's peak of 28°C (83°F). Additionally, while both months see some precipitation, September averages 49 mm (1.9 in) across 8 days, compared to January's slightly lower 42 mm (1.7 in) over 9 days. Humidity levels are also relatively similar, with September at 63% and January at 65%. For a more detailed look at January weather, visit Mona Vale weather in January.
September and February exhibit strikingly different 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 temperature of 16°C (61°F). The month sees about 49 mm (1.9 in) of precipitation spread over 8 days, and the humidity level hovers around 63%. In contrast, February experiences warmer conditions, with temperatures ranging from a minimum of 17°C (62°F) to a scorching maximum of 35°C (95°F), averaging 23°C (73°F). It is also a wetter month, receiving 125 mm (4.9 in) of rain over 13 days, accompanied by slightly higher humidity at 69%. For a more detailed comparison, you can check out Mona Vale weather in February.
When comparing the weather in September and March, several notable differences emerge. September generally experiences milder temperatures, with a minimum of 10°C (50°F) and an average of 16°C (61°F), while March sees significantly warmer conditions, featuring a minimum of 15°C (59°F) and an average of 22°C (71°F). In terms of maximum temperatures, March peaks at 33°C (92°F), which is much higher than September's maximum of 28°C (83°F). Additionally, precipitation levels vary considerably; September averages 49 mm (1.9 in) over 8 days, whereas March has much heavier rainfall at 185 mm (7.3 in) spread over 18 days. This results in higher humidity in March at 72%, compared to September's 63%. For a more detailed look, you can check Mona Vale weather in March.
When comparing the weather in September and April, September tends to be cooler, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 28°C (83°F). In contrast, April showcases slightly warmer temperatures, with a minimum of 12°C (54°F) and a maximum of 30°C (86°F). Despite April having a lower total precipitation of 40 mm (1.6 in) over 9 days, the humidity is higher at 75%, compared to September's 63%. For a more detailed look at what to expect in April, you can visit Mona Vale weather in April.
September and May 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). It features 49 mm of precipitation over approximately 8 days and a humidity level of 63%. In contrast, May is slightly cooler with temperatures varying from a minimum of 8°C (46°F) to a maximum of 24°C (76°F), and an average temperature of 17°C (62°F). Additionally, May sees higher precipitation, totaling 63 mm over 9 days, and a higher humidity level at 74%. For a closer look at the weather specifics in May, check out Mona Vale weather in May.
When comparing the weather in September and June, we see some notable differences. September generally has a milder temperature range with minimums around 10°C (50°F) and maximums reaching up to 28°C (83°F), while June starts slightly cooler with minimums at 8°C (47°F) and maximums peaking at 22°C (72°F). Although September has a lower average precipitation of 49 mm (1.9 in) over 8 days, June experiences significantly more rain, totaling 108 mm (4.3 in) across 15 days. Additionally, June tends to be more humid, with levels at 72%, compared to September's 63%. For more detailed insights, check out Mona Vale weather in June.
In comparing the weather between September and July, we can see that September is generally warmer, with average temperatures reaching 16°C (61°F) compared to July’s cooler average of 14°C (57°F). The maximum temperatures in September can go up to 28°C (83°F), significantly higher than July's maximum of 23°C (74°F). However, July has a slightly lower average precipitation at 54 mm (2.1 in) over 6 days, compared to September's 49 mm (1.9 in) over 8 days. Humidity levels are relatively similar, with September at 63% and July at 68%. For more detailed information, you can check Mona Vale weather in July.
In comparing the weather of September and August, September experiences slightly warmer temperatures, with a minimum of 10°C (50°F) and an average of 16°C (61°F), while August has a lower minimum of 8°C (46°F) and an average of 14°C (58°F). The maximum temperature in September reaches 28°C (83°F), which is significantly higher than August's maximum of 22°C (72°F). Precipitation levels are quite similar, with September receiving 49 mm (1.9 in) over 8 days and August receiving 53 mm (2.1 in) over 6 days. Humidity is slightly lower in September at 63%, compared to 67% in August. For more detailed insights about August, visit Mona Vale weather in August.
September and October present notable differences in weather patterns. September sees a cooler temperature range, with minimums of 10°C (50°F) and maximums reaching up to 28°C (83°F), while October boasts slightly warmer conditions, with minimum temperatures of 12°C (54°F) and maximums peaking at 29°C (84°F). Precipitation also increases from 49 mm (1.9 in) over 8 days in September to 85 mm (3.4 in) across 12 days in October, indicating a wetter month ahead. Additionally, humidity levels drop from 63% in September to 55% in October, suggesting a more comfortable atmosphere. For further details, check out the Mona Vale weather in October.
September presents a mild transition into spring, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 28°C (83°F) and an average of 16°C (61°F). During this month, precipitation is moderate at 49 mm (1.9 in) over about 8 days, with a humidity level of 63%. In contrast, November experiences warmer conditions, with minimum temperatures rising to 13°C (56°F) and maximum temperatures reaching 34°C (94°F), averaging at 19°C (67°F). However, November also brings increased rainfall, totaling 85 mm (3.3 in) over around 10 days, but with slightly lower humidity at 57%. For more detailed information about the weather patterns, you can check Mona Vale weather in November.
September and December present contrasting 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). The month experiences relatively moderate precipitation at 49 mm (1.9 in) across eight days and a humidity level of 63%. In contrast, December sees warmer conditions, with temperatures ranging from 15°C (60°F) to 30°C (87°F) and an average of 21°C (70°F). The precipitation increases to 78 mm (3.1 in) over eleven days, and humidity slightly rises to 68%. For more detailed information, you can check Mona Vale weather in December.
September in Mona Vale ushers in a transition from the cool tones of winter to the warmth of spring, with temperatures gradually rising and a noticeable increase in humidity. While the maximum temperature hints at the approaching summer heat, the overall climate remains refreshingly mild. With an average of 8 days of precipitation, September can be somewhat damp, yet it’s the perfect time for blooming flora as the landscape begins to awaken. The vibrant blend of mild days and the lingering touch of moisture makes this month uniquely inviting, paving the way for the more intense warmth that follows. For more information on how this month fits into the year’s pattern, visit Mona Vale Climate.