September Weather in Wollongong, Australia

Last updated: February 25, 2025

In Wollongong, Australia, September brings a delightful transition into spring, marked by a maximum temperature reaching 24°C (76°F) and an average of 16°C (60°F). As the days turn milder, the minimum temperature hovers around 10°C (51°F), providing a comfortable atmosphere for outdoor activities. This month experiences about 51 mm (2.0 in) of rainfall spread over 7 days, contributing to the lush greenery of the region. With an average humidity level of 64%, the coastal city offers a refreshing climate, making September an ideal time to explore its beautiful landscapes and vibrant community.

September Temperature in Wollongong

As September arrives in Wollongong, Australia, the city begins its transition from winter to spring, bringing with it a noticeable warming trend. The temperatures see a gentle rise, with minimums averaging 10°C (51°F) and maximums reaching up to 24°C (76°F). This shift marks a departure from the cooler winter months, and the average temperature of 16°C (60°F) invites residents and visitors alike to embrace the burgeoning warmth. The increasing daylight and milder weather create the perfect backdrop for outdoor activities, paving the way for a lush and vibrant spring ahead. As nature awakens, Wollongong's charm truly begins to flourish in September.

September Weather in Wollongong: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Wollongong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec727170676359585760636568
Data source: Temperature data for Wollongong generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Wollongong

In September, Wollongong experiences a slight dip in precipitation, receiving 51 mm (2.0 in) over 7 days. This marks a continuation of the dry trend following the winter months, where July and August recorded lower rainfall amounts of 59 mm and 70 mm, respectively. As spring approaches, the decrease in precipitation paves the way for the warmer months ahead. Interestingly, this autumn transition hints at a shift from the heavier rains of March, which recorded a substantial 217 mm (8.6 in), showcasing the region's tendency for variable weather patterns. As the city gears up for October, known for its 98 mm of rain over 13 days, residents can anticipate a more dynamic climatic shift in the weeks to come.

September Precipitation Trends in Wollongong

The chart displays monthly precipitation patterns in Wollongong, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec5713521755821225971519812186
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wollongong

September in Wollongong, Australia, ushers in a noticeable drop in humidity, recorded at 64%. This decline marks the continuation of a seasonal trend, as humidity levels generally taper off from the warm, humid months of summer—starting at 70% in January and peaking at 74% in February. As the year progresses into spring, Wollongong experiences an overall decrease, with September reaching its lowest point since earlier in the year. This reduction in humidity not only signals a shift towards drier weather but also prepares the region for the even more moderate conditions of October, which sees further lowering to 61%. Such transitions contribute to the unique charm of Wollongong’s climate, enhancing the coastal atmosphere that many residents and visitors cherish.

September Average Humidity in Wollongong

This chart illustrates the average monthly humidity levels in Wollongong, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec70%75%73%73%72%70%69%68%64%61%64%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Wollongong

As the seasons shift in Wollongong, September marks a notable transition in the UV Index, reaching a level of 8 with a very high exposure category, requiring just 15 minutes of sun before vulnerable skin risks burning. This increase follows the moderate levels seen throughout the winter months, where the UV Index hovered around 3 to 5. With the approach of spring, sun safety becomes crucial as the UV levels rise, reflecting a broader trend of escalating UV exposure in the lead-up to the hotter months. It's essential to stay informed and protected, especially as the Index climbs to 10 in October and peaks back into the extreme zone by November. For more insights and updates, refer to the Wollongong UV Index.

Maximum UV Index Levels in Wollongong for September

The chart shows the monthly maximum UV Index (UVI) for Wollongong in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec141312853458101214
Data source: Wollongong September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Wollongong

September in Wollongong, Australia, shines brightly with an impressive 287 hours of sunshine, marking the end of winter and the beginning of spring. This month stands out as a transition period, where days grow longer and warmer, as indicated by the upward trend in daylight hours leading into summer. Following August's 267 hours, September's increase demonstrates a clear pattern of longer, sunnier days that only intensifies with October's 302 hours and peaks in the summer months. This delightful surge in sunshine not only enhances the coastal city's vibrant landscape but also invites both locals and visitors to bask in the rejuvenating warmth of the changing season.

Monthly Sunshine Duration in Wollongong: September Highlighted

The September sunshine duration represents the total number of hours Wollongong experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec259h278h272h269h248h222h247h267h287h302h310h327h
Data source: Wollongong September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Wollongong During September

As September rolls in, Wollongong experiences a promising 60% chance of sunny weather, signaling the transition into spring. This trend offers a delightful uptick compared to the winter months, with July and August recording chances of 57% and 63%, respectively. The increase in sunshine not only enhances the city's vibrant coastal beauty but also encourages outdoor activities as the local community emerges from the cooler months. Following September, the chance of sunny days dips in October to 51% and takes a sharp decline towards the end of the year, particularly in November at just 26%. Thus, September serves as a sweet spot for sunny days, bridging the gap between winter quietude and the warmer months ahead.

Percentage of Sunny Days in September in Wollongong

The chart illustrates the percentage of sunny days in Wollongong throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Wollongong experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%42%39%71%56%50%57%63%60%51%26%42%
Data source: Wollongong September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Wollongong in September

As September unfolds in Wollongong, Australia, daylight begins to reclaim its presence after the winter months. With 11 hours of daylight, this month marks a subtle upturn from the shorter days of winter, aligning perfectly with the transition into spring. The gradual increase in daylight is a precursor to the longer, sun-soaked days ahead, peaking in January with 14 hours. Nature awakens with vibrant energy during September, inviting both residents and visitors to enjoy the outdoor beauty as daylight begins its steady march toward the summer peak. This rhythm of lengthening days not only signals a change in the seasons but also enriches the local atmosphere, enhancing activities and lifestyles throughout the region.

Average Daylight Hours in Wollongong for September

The chart illustrates the variation in daylight duration in Wollongong throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 9m13h 19m12h 15m11h 11m10h 18m9h 52m10h 5m10h 51m11h 52m12h 56m13h 54m14h 23m
Data source: Wollongong daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Wollongong

As autumn begins to unfurl its colors in Wollongong, September brings a subtle uptick in the wind, with an average speed of 6.1 m/s (14 mph), matching the momentum seen earlier in the year. This marks a shift from the calmer breezes of April, which dipped to 4.2 m/s (9 mph), reflecting a consistent pattern of increased wind speeds from late winter into spring. While the summer months flirt with slightly lower numbers, September stands out as a refreshing bridge to October, which sees a decrease to 5.1 m/s (11 mph). This interplay of breezy gusts hints at the invigorating changes nature brings as the season transitions, inviting residents and visitors alike to savor the crisp air and the beauty of the coastal landscape.

Average September Wind Speed in Wollongong

The chart displays monthly wind speed patterns in Wollongong, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.75.96.14.25.35.75.96.06.1 m/s5.15.55.9
Data source: Wollongong September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Wollongong Compares to Other Months

The weather in Wollongong 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 Wollongong and find detailed weather information for every month.

In September, the weather tends to be milder with average temperatures ranging from a minimum of 10°C (51°F) to a maximum of 24°C (76°F). The month typically experiences around 51 mm (2.0 in) of precipitation over about 7 days, accompanied by a humidity level of 64%.

By contrast, January brings warmer conditions, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 31°C (87°F). This month sees slightly higher precipitation, averaging 57 mm (2.2 in) over 9 days, and a higher humidity level of 70%. For a more detailed comparison, you can check Wollongong weather in January.

When comparing the weather in September and February, there are notable differences in temperature and precipitation. September experiences a milder climate with minimum temperatures around 10°C (51°F), averaging 16°C (60°F), and maximums reaching 24°C (76°F). This month sees about 51 mm (2.0 in) of precipitation over 7 days, with a humidity level of 64%. In contrast, February is significantly warmer, with minimum temperatures starting at 17°C (62°F) and averaging 22°C (72°F), peaking at 29°C (85°F). The month is also much wetter, with 135 mm (5.3 in) of rain spread over 15 days and a higher humidity of 74%. For a detailed look at February's weather patterns, you can check Wollongong weather in February.

September and March present quite different weather conditions. In September, temperatures range from a mild minimum of 10°C (51°F) to a comfortable maximum of 24°C (76°F), with average daily temperatures hovering around 16°C (60°F). The month sees about 51 mm (2.0 in) of precipitation spread over 7 days, accompanied by a relative humidity of 64%. In contrast, March experiences higher temperatures, with minimums around 15°C (59°F) and maximums reaching 31°C (88°F), resulting in an average of 21°C (70°F). However, this warmth comes with significantly more rainfall—217 mm (8.6 in) over 18 days—and a higher humidity level of 73%. For more details, you can check Wollongong weather in March.

When comparing the weather in September and April, April generally experiences warmer temperatures, with averages reaching 19°C (67°F) compared to September's average of 16°C (60°F). While September has a maximum temperature of 24°C (76°F), April can peak at 27°C (81°F). Precipitation levels are fairly similar, with September receiving 51 mm (2.0 in) over about 7 days, while April has a slightly higher total of 55 mm (2.2 in) across 9 days. Additionally, April tends to be more humid, averaging 73% compared to September's 64%. For a more detailed outlook, you can check Wollongong weather in April.

In comparing the weather of September and May, we notice subtle yet significant differences. September tends to have slightly warmer temperatures, with averages around 16°C (60°F) and a maximum of 24°C (76°F), while May has a slightly cooler average of 17°C (63°F) and a similar maximum of 23°C (73°F). Precipitation is more pronounced in May, totaling 82 mm (3.2 in) over 8 days, compared to September's 51 mm (2.0 in) over 7 days. Additionally, May experiences higher humidity at 72%, compared to September's 64%. For more specific details about May weather patterns, you can refer to Wollongong weather in May.

When comparing the weather in September to that of June, a few notable differences emerge. September tends to be slightly warmer, with average temperatures reaching 16°C (60°F) compared to June's average of 15°C (59°F). However, June experiences more precipitation, with 122 mm (4.8 in) spread over 14 days, whereas September sees only 51 mm (2.0 in) over 7 days. Additionally, June's humidity levels are slightly higher at 70%, compared to September's 64%. For more detailed information, you can check Wollongong weather in June.

In comparing the weather of September and July, September tends to be slightly warmer with average temperatures reaching 16°C (60°F), compared to July's average of 14°C (58°F). While the maximum temperature in September can climb to 24°C (76°F), July's peak is a cooler 21°C (71°F). Precipitation is fairly comparable, with September receiving 51 mm (2.0 in) over 7 days, while July has 59 mm (2.3 in) over 5 days. Additionally, humidity levels are a bit higher in July at 69% compared to September's 64%. For more detailed information, you can visit Wollongong weather in July.

In September, the weather is slightly warmer compared to August, with average temperatures reaching 16°C (60°F), while August has an average of 14°C (58°F). The maximum temperature in September also edges higher at 24°C (76°F) compared to August's maximum of 21°C (70°F). However, September enjoys less precipitation at 51 mm (2.0 in) over 7 days, whereas August sees higher rainfall of 70 mm (2.8 in) over the same number of days. Humidity levels are a bit lower in September at 64%, compared to 68% in August. For more details, you can visit Wollongong weather in August.

September typically offers milder conditions with an average temperature of 16°C (60°F) and a maximum reach of 24°C (76°F), alongside 51 mm (2.0 in) of precipitation over approximately 7 days. In contrast, October sees a slight increase in temperature with an average of 17°C (63°F) and a higher maximum of 27°C (80°F). However, it also experiences more rainfall, with precipitation rising to 98 mm (3.8 in) over about 13 days. While both months maintain a relatively similar humidity level, October tends to be wetter and warmer. For more detailed insights, check out Wollongong weather in October.

September and November exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 24°C (76°F), with an average of 16°C (60°F) and 51 mm (2.0 in) of precipitation occurring over 7 days. This month maintains a comfortable humidity level of 64%. In contrast, November sees slightly warmer temperatures, with minimums at 12°C (54°F) and maximums reaching up to 30°C (87°F), averaging 18°C (65°F). However, it experiences increased precipitation at 121 mm (4.8 in) over 10 days, with the same humidity level of 64%. For more detailed information about the weather in November, you can visit Wollongong weather in November.

In September, the weather is generally mild with temperatures ranging from a minimum of 10°C (51°F) to a maximum of 24°C (76°F), averaging around 16°C (60°F). There is moderate precipitation, with about 51 mm (2.0 in) falling over approximately 7 days, and the humidity is around 64%. In contrast, December brings warmer conditions, with temperatures between 15°C (59°F) and 28°C (83°F), and an average of 20°C (69°F). The month typically experiences higher precipitation at 86 mm (3.4 in), spread across 14 days, along with increased humidity of 71%. For more details, check out Wollongong weather in December.

Compare Wollongong's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Wollongong

As September unfolds in Wollongong, it marks a transition from the colder winter months to the more temperate spring season. This month typically brings a pleasant average temperature of around 16°C, with maximums occasionally reaching 24°C, making it one of the more enjoyable times of the year. Although the city experiences some rainfall, totaling about 51 mm over a handful of days, the humidity levels hold steady at 64%, creating a refreshing atmosphere. Compared to the chillier previous months, September invites residents and visitors alike to embrace the outdoors, making it a perfect backdrop for exploration and relaxation. For a deeper dive into what to expect throughout the year, check out the complete guide on Wollongong Climate.