Last updated: February 25, 2025
In September, Byron Bay experiences a delightful blend of spring warmth and occasional rainfall. With maximum temperatures reaching up to 32°C (90°F) and an average of 18°C (64°F), the region offers a comfortable climate for outdoor activities. While the minimum temperature can dip to 9°C (48°F) during the nights, the overall humidity levels hover around 69%, contributing to a refreshing atmosphere. Rainfall is modest, with 38 mm (1.5 in) over approximately 5 days, allowing for plenty of sunshine amidst the gentle showers. This combination makes September a perfect time to explore the stunning coastal landscapes and vibrant local culture of Byron Bay.
September in Byron Bay marks the transition from the cooler winter months to the warmer spring days, with temperatures showing a delightful uptick. The minimum temperature rises to a comfortable 9°C (48°F), providing a brisk yet pleasant start to the day. As the sun climbs higher, the average temperature reaches 18°C (64°F), offering a lovely balance of warmth and freshness. By midday, temperatures can soar to a maximum of 32°C (90°F), making it an ideal time to enjoy the outdoors, whether lounging on the beach or hiking through lush landscapes. This month signifies the perfect blend of warmth and cool breezes, inviting visitors to experience the vibrant beauty of Byron Bay as it awakens from winter slumber.
In September, Byron Bay experiences a notable shift in precipitation patterns, with rainfall amounting to 38 mm (1.5 in) across just 5 days. This marks a slight increase from the notably dry month of August, which received only 30 mm (1.2 in) on just 4 days. As spring unfolds, the transition brings a refreshing change, setting the stage for the more significant rainfall seen in the following months, especially October, which typically averages 131 mm (5.1 in). This trend suggests that while September tends to remain relatively dry, it lays the groundwork for the wetter conditions that characterize the upcoming spring months, providing contentment for both local flora and visitors in search of beautiful coastal scenery.
As Spring arrives in Byron Bay, September marks a slight decline in humidity, falling to 69%. This gradual decrease signifies a transition from the more humid winter months, where humidity hovered around 70% to 71%. Interestingly, as the year unfolds, humidity levels tend to rise again, peaking in the summer months of January and February, with values reaching 78% to 80%. The trend indicates that September offers a refreshing respite, paving the way for warmer and more humid conditions ahead, making this month a perfect time for outdoor activities before the heat envelops the region.
As the seasons shift in Byron Bay, September sees a UV Index of 9, categorizing the exposure as very high, with a burn time of just 15 minutes. This marks a notable transition as the UV levels begin to rise after the cooler months of June and July, which had moderate levels of 4 and 5. Following the pattern, October ramps up to an extreme level of 11, echoing the trends observed earlier in the year. It's clear that as spring approaches, the need for sun protection becomes increasingly important. For more detailed information, check out the Byron Bay UV Index.
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As September rolls in, Byron Bay experiences a captivating surge in sunlight, boasting an impressive 298 hours of glorious sunshine. This marks a delightful peak after August's already generous 288 hours, setting the stage for the warmer months ahead. The trend is unmistakable: the days are getting longer, and the vibrant energy of spring is palpable. Following a steady decline from the festive highs of January's 277 hours, the sun's return in September not only revitalizes the landscape but also invites locals and visitors alike to bask in the rejuvenating warmth. With October and November on the horizon promising even more sunshine—294 hours and 325 hours, respectively—Byron Bay is clearly beckoning everyone to enjoy its breathtaking outdoor beauty during this sun-drenched transition.
In Byron Bay, Australia, the chance of sunny weather in September holds a promising 65%, making it a great time to soak up the sun before the warmer months set in. As the year progresses from the cooler winter months, we see a noteworthy trend: the likelihood of sunny days steadily increases, reaching its peak in August at 70%. While September's chances dip slightly, they still remain significantly higher than earlier months like January and November, which are marked by only 48% and 29% respectively. This upward trajectory suggests that visitors in September are likely to enjoy delightful days filled with sunshine, ideal for exploring the stunning coastal landscapes or lounging on picturesque beaches.
As the seasons shift in Byron Bay, September brings a delightful 11 hours of daylight, mirroring the gradual transition of spring. The daylight hours remain consistent with those of August, suggesting a gentle balance as nature begins to awaken. Following the summer peak in January and February, where daylight extends to 13 hours, there’s a clear trend of decreasing light through the autumn months, culminating in 10 hours during the heart of winter. However, as September unfolds, the promise of longer days slowly reemerges, hinting at the vibrancy of October and November, where daylight increases once again. This cyclical pattern not only enhances daily routines but also enriches the region's outdoor charm, inviting both locals and visitors to bask in the beauty of Byron Bay’s illuminating springtime ambiance.
As September sweeps into Byron Bay, a noticeable shift in the breeze sets the stage for the arrival of spring. The average wind speed climbs to 4.2 m/s (9 mph), marking it as the windiest month of the year so far. This invigorating gustiness contrasts sharply with the calmer days of winter, where wind speeds dipped as low as 3.1 m/s (7 mph). The transition into September not only heralds a change in weather but also enhances the coastal experience, invigorating the stunning landscapes and luring outdoor enthusiasts to embrace the refreshing air. As the warmer months approach, this uptick in wind speed hints at a vibrant season ahead, perfect for surfers, beachgoers, and nature lovers to revel in the evolving beauty of Byron Bay.
The weather in Byron Bay 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 Byron Bay and find detailed weather information for every month.
September and January in Byron Bay showcase significant differences in weather patterns. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 32°C (90°F), with an average of 18°C (64°F). The month experiences about 38 mm (1.5 in) of precipitation over approximately 5 days, accompanied by a moderate humidity level of 69%. In contrast, January is warmer, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 34°C (94°F), averaging 25°C (77°F). This month sees increased rainfall, with about 75 mm (2.9 in) of precipitation over around 10 days, and higher humidity at 78%. For more details, check out Byron Bay weather in January.
The weather in September and February presents distinct contrasts. In September, temperatures range from a chilly 9°C (48°F) at night to a warm 32°C (90°F) during the day, with an average of 18°C (64°F). This month sees relatively moderate precipitation of 38 mm (1.5 in) over about 5 days and humidity levels around 69%. In contrast, February tends to be significantly warmer, with minimum temperatures of 17°C (63°F) and daytime highs reaching up to 36°C (98°F), resulting in an average of 24°C (76°F). However, February experiences much higher precipitation, totaling 199 mm (7.8 in) spread across 15 days, along with increased humidity at 80%. For those interested in the specifics of February weather trends, visit Byron Bay weather in February.
September and March present distinctly different weather patterns. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 32°C (90°F), with an average of 18°C (64°F) and relatively low precipitation of 38 mm (1.5 in) over 5 days, resulting in a humidity level of 69%. In contrast, March features warmer temperatures, with a minimum of 16°C (62°F), an average of 23°C (74°F), and a maximum of 33°C (92°F). However, it sees significantly higher rainfall at 192 mm (7.5 in) over 20 days, contributing to a higher humidity level of 80%. For a more in-depth look at the weather during March, check out Byron Bay weather in March.
When comparing the weather in September to that of April, notable differences emerge. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 32°C (90°F), resulting in an average temperature of 18°C (64°F). The month experiences relatively low precipitation, with only 38 mm (1.5 in) over about 5 days, and a humidity level of 69%. In contrast, April sees slightly milder temperatures with minimums around 12°C (53°F) and maximums reaching 31°C (88°F), averaging 21°C (69°F). However, it also brings more rainfall, totaling 82 mm (3.2 in) over 13 days, alongside higher humidity at 78%. For a detailed look at the weather in April, check out Byron Bay weather in April.
In September, the weather features a minimum temperature of 9°C and an average of 18°C, peaking at a warm 32°C, with moderate precipitation of 38 mm over about 5 days and humidity at 69%. In contrast, May offers a slightly warmer minimum of 9°C and a similar average temperature of 18°C, but the maximum temperature is cooler at 27°C. May experiences more rainfall, accumulating 61 mm over 11 days, along with a higher humidity level of 73%. This comparison highlights a trend toward cooler, wetter conditions in May compared to the warmer, drier climate of September. For more detailed information, check out Byron Bay weather in May.
When comparing the weather in September to that in June, September generally offers warmer temperatures, with averages peaking at 18°C (64°F) compared to June's average of 16°C (60°F). September's maximum can soar to 32°C (90°F), making it noticeably hotter than June's maximum of 23°C (74°F). However, June experiences more rainfall, with 82 mm (3.2 in) over 12 days, while September sees only 38 mm (1.5 in) over 5 days. Humidity levels remain similar, with September at 69% and June slightly higher at 71%. For a detailed look at June's weather, you can refer to Byron Bay weather in June.
In comparing the weather of September and July, September tends to be warmer, with average temperatures reaching 18°C (64°F) compared to July's average of 15°C (59°F). Additionally, September experiences higher maximum temperatures, peaking at 32°C (90°F), whereas July's maximum is a milder 24°C (76°F). However, July has slightly more rainfall, accumulating 57 mm (2.3 in) over about 8 days, compared to September's 38 mm (1.5 in) of precipitation over 5 days. Humidity levels are comparable, with September at 69% and July at 70%. For more detailed information, you can check Byron Bay weather in July.
In comparing the weather of September and August, September offers warmer temperatures, with an average high of 32°C (90°F) compared to August's maximum of 27°C (82°F). The minimum temperatures are also slightly higher in September, starting at 9°C (48°F), while August begins at 6°C (43°F). Additionally, September sees a slight increase in precipitation, recorded at 38 mm over five days, as opposed to August's 30 mm over four days. Despite these differences, humidity remains relatively stable, with September at 69% and August at 71%. For more specific details on August weather, visit Byron Bay weather in August.
In September, the weather tends to feature a broader temperature range, with minimum temperatures dropping to around 9°C (48°F) and maximums reaching up to 32°C (90°F), leading to an average of 18°C (64°F). The month sees relatively low precipitation, with only 38 mm (1.5 in) falling over about 5 days and a humidity level of 69%.
In contrast, October experiences a slightly warmer climate, with minimum temperatures rising to 11°C (51°F) and average temperatures increasing to 20°C (69°F). However, this month is characterized by significantly more rainfall, totaling 131 mm (5.1 in) over 13 days, and a slight increase in humidity to 71%. This transition indicates a shift toward wetter conditions as the season progresses. For more specific insights on the weather during this month, you can refer to Byron Bay weather in October.
In September, the weather is generally milder, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 32°C (90°F), and an average temperature of 18°C (64°F). The month experiences relatively low precipitation of 38 mm (1.5 in) over about 5 days, and humidity averages around 69%. In contrast, November sees warmer conditions, with minimum temperatures rising to 14°C (57°F) and an average of 22°C (71°F), while still allowing for maximum highs of 32°C (90°F). However, November brings increased precipitation of 81 mm (3.2 in) spread over 11 days, alongside a slight uptick in humidity at 76%. For a detailed look at what to expect, you can check out Byron Bay weather in November.
September offers a milder climate with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 32°C (90°F), averaging around 18°C (64°F). With 38 mm of precipitation over just 5 days, the humidity stands at a comfortable 69%. In contrast, December heats up, with temperatures varying from a minimum of 17°C (63°F) to a maximum of 35°C (95°F), averaging 24°C (75°F). However, December also brings increased rainfall, totaling 147 mm over 14 days and a higher humidity level of 80%. For more detailed insights, check out the Byron Bay weather in December.
As September ushers in the spring season, Byron Bay experiences a notable shift in weather compared to the colder winter months. With a delightful average temperature of 18°C, days become warmer, peaking at a vibrant 32°C, ideal for beach activities. While occasional rain brings around 38 mm of precipitation over five days, the increase in humidity to 69% hints at the approaching summer warmth. This balance of sun and shower gives visitors a sneak peek into the lively climate ahead, making it a charming time to explore the region. For a deeper understanding of the evolving weather patterns, check out the detailed insights on Byron Bay Climate.