September Weather in Mittagong, Australia

Last updated: February 26, 2025

In September, Mittagong, Australia, experiences a transition into spring, characterized by a maximum temperature reaching 31°C (87°F) and an average of 12°C (54°F), showcasing the warming climate. Nights can be quite brisk, with lows dipping to 0°C (32°F). This month also witnesses a moderate precipitation total of 43 mm (1.7 in) over 6 days, contributing to a humidity level of 64% that enhances the lushness of the landscape. As the season unfolds, the balance of warmth and rainfall sets the perfect stage for the blooming of nature in this picturesque region.

September Temperature in Mittagong

In September, Mittagong bids farewell to winter's chill, with temperatures gradually rising as spring approaches. The month starts with a minimum of 0°C (32°F), indicating a crisp morning air, which quickly warms up to an average of 12°C (54°F). The days bring a pleasant transition, reaching a maximum of 31°C (87°F), showcasing a leap in warmth compared to the preceding months. This upward trend marks the beginning of a more vibrant season, as nature awakens and colors bloom, making September a delightful time to experience the changing landscape of Mittagong.

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

The chart illustrates September temperature patterns in Mittagong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec706764595348484954596266
Data source: Temperature data for Mittagong 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 Mittagong

In Mittagong, Australia, September marks a transition in precipitation patterns, characterized by a total of 43 mm (1.7 in) of rainfall over six days. Compared to the preceding months, which saw heavier rainfall—particularly March with 170 mm (6.7 in)—September's figures reflect a notable decrease, aligning with the trend of spring's arrival. This lighter precipitation suggests a shift towards drier, milder conditions, setting the stage for a more vibrant landscape as the season progresses. However, it still contributes to maintaining the lush environment that characterizes this picturesque region during the year.

September Precipitation Trends in Mittagong

The chart displays monthly precipitation patterns in Mittagong, 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.
JanFebMarAprMayJunJulAugSepOctNovDec611331703454383559439310999
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mittagong

As the seasons transition in Mittagong, Australia, September marks a notable shift in humidity levels, with the average dipping to 64%. This is part of a gradual decline from the warmer months of early summer, where humidity peaks at around 74% in February, to the more comfortable conditions experienced in spring. The trend of decreasing humidity continues into October, reaching its lowest at 61%. This decrease not only enhances the crispness of the spring air but also paves the way for more enjoyable outdoor activities, as visitors and residents alike revel in the refreshing change from the higher humidity of the earlier months.

September Average Humidity in Mittagong

This chart illustrates the average monthly humidity levels in Mittagong, 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 Mittagong

In September, Mittagong experiences a UV Index of 8, placing it in the very high exposure category with a burn time of just 15 minutes. This marks a slight shift from the preceding months, as the sun's intensity begins to rise after the winter lull. The UV ratings in September are reminiscent of the spring transition, much like the higher indices observed during the peak summer months of January and February, where the UV Index soared to extremes of 14 and 15. As daylight lengthens and temperatures warm, it’s essential for residents and visitors to stay vigilant about sun protection during this time. For more comprehensive insights, check out the detailed Mittagong UV Index.

Maximum UV Index Levels in Mittagong for September

The chart shows the monthly maximum UV Index (UVI) for Mittagong 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.
JanFebMarAprMayJunJulAugSepOctNovDec151412853468101215
Data source: Mittagong 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 Mittagong

September graces Mittagong, Australia, with a wonderful flourish of sunlight, recording a remarkable 285 hours of radiant days. As the days transition from the cooler months, there’s a distinct upward trend in sunshine hours, paving the way for the warmer months ahead. This month showcases a noticeable increase from the preceding winter months, with sunshine soaring beyond August's 264 hours. Looking ahead, October promises even brighter days, with an anticipated 296 hours, signaling the arrival of spring in full bloom. The consistent rise in sunshine hours not only enhances outdoor activities but also lifts spirits, making September a delightful prelude to the vibrant sunny days that follow.

Monthly Sunshine Duration in Mittagong: September Highlighted

The September sunshine duration represents the total number of hours Mittagong 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.
JanFebMarAprMayJunJulAugSepOctNovDec255h274h265h266h244h215h245h264h285h296h305h321h
Data source: Mittagong September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mittagong During September

As September rolls around in Mittagong, Australia, the likelihood of enjoying sunny weather stands at a moderate 56%. This places it among the sunnier months, following a promising August, which boasts a 59% chance of sunshine. Interestingly, September serves as a bridge between the latter part of winter and the onset of spring, reflecting a steady increase in sunny days compared to the cooler months. After a relatively gloomy winter, the sunshine opportunity begins to rise, hinting at the vibrant colors and warmth that spring brings. With the drop in probability after September, it’s a perfect time to soak up the sun before the clouds settle in during the later months of the year.

Percentage of Sunny Days in September in Mittagong

The chart illustrates the percentage of sunny days in Mittagong 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 Mittagong experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec40%27%36%61%56%39%52%59%56%45%19%30%
Data source: Mittagong September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mittagong in September

As September unfolds in Mittagong, Australia, daylight begins to reclaim its presence after the winter months, offering a refreshing 11 hours of sunshine. This marks the transition from winter hibernation to the vibrant hues of spring, following the shorter days of June and July. Although the daylight hours remain modest compared to the heights of summer, this increase signals the impending return of longer and brighter days. With each passing month, as we edge closer to October, there is a palpable shift in the atmosphere, hinting at nature’s rejuvenation and the joy that comes with the arrival of warmer weather.

Average Daylight Hours in Mittagong for September

The chart illustrates the variation in daylight duration in Mittagong throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 8m13h 19m12h 15m11h 11m10h 18m9h 52m10h 5m10h 51m11h 52m12h 56m13h 53m14h 23m
Data source: Mittagong daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Mittagong

As September unfolds in Mittagong, Australia, the winds dance to a gentle rhythm, maintaining an average speed of 3.4 m/s (8 mph)—a figure consistent with the slightly breezy conditions experienced in August. This month marks a transition, as the wind speeds have notably increased since the milder months of early winter. Throughout the year, wind patterns reveal a subtle crescendo, with July recording the peak at 3.5 m/s (8 mph). Following a brief dip in April, those spring months show a gradual uptrend, creating an invigorating atmosphere as nature prepares for the warmer seasons ahead. The winds of September not only provide refreshing air but also hint at the vibrant changes that lie ahead, as the average speed settles into a pattern that’s both comfortable and exhilarating.

Average September Wind Speed in Mittagong

The chart displays monthly wind speed patterns in Mittagong, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.62.72.92.42.93.13.53.43.4 m/s2.92.92.6
Data source: Mittagong September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Mittagong Compares to Other Months

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

September and January display contrasting weather patterns. In September, temperatures range from a chilly 0°C (32°F) to a warm 31°C (87°F), with an average of 12°C (54°F). The month experiences about 43 mm (1.7 in) of precipitation over six days, coupled with a humidity level of 64%. In contrast, January boasts much warmer temperatures, with minimums of 8°C (47°F) and maximums soaring to 40°C (105°F), while the average temperature sits at a comfortable 21°C (70°F). Precipitation in January increases to 61 mm (2.4 in) over twelve days, and humidity rises to 70%. For those interested in the specifics of January weather, you can find more information here: Mittagong weather in January.

In September, the weather presents a more moderate climate with temperatures ranging from a chilly 0°C (32°F) to a warm 31°C (87°F), resulting in an average temperature of 12°C (54°F). In contrast, February tends to be significantly warmer, with temperatures varying from a minimum of 9°C (48°F) up to a scorching 39°C (103°F), averaging 20°C (67°F). While September experiences just 43 mm (1.7 in) of precipitation over about six days, February is much wetter, receiving 133 mm (5.2 in) of rain across approximately 14 days. The humidity in February also rises to 74%, compared to September's 64%. For a deeper dive into February's weather specifics, check out Mittagong weather in February.

September and March present quite distinct weather patterns. In September, temperatures range from a chilly minimum of 0°C (32°F) to a comfortable average of 12°C (54°F), peaking at a warm 31°C (87°F). The month sees moderate precipitation of 43 mm (1.7 in) over approximately 6 days, with humidity levels averaging around 64%. In contrast, March experiences milder minimum temperatures starting at 6°C (43°F) and a significantly higher average of 18°C (65°F), with maximum temperatures reaching a sweltering 36°C (96°F). This month is much wetter, with precipitation totaling 170 mm (6.7 in) spread over 16 days and humidity rising to an average of 73%. For a more detailed look at March weather, you can visit Mittagong weather in March.

In September, temperatures exhibit a wider range, with minimums dropping to 0°C (32°F) and maximums reaching 31°C (87°F), while the monthly average stands at 12°C (54°F). In contrast, April features milder temperatures, starting from a minimum of 4°C (40°F) to the same maximum of 31°C (88°F), yielding a higher average temperature of 15°C (60°F). Precipitation is slightly higher in September at 43 mm (1.7 in) compared to 34 mm (1.3 in) in April, both months experiencing around 6 days of rain. Notably, humidity levels are also higher in April, at 73%, compared to September's 64%, making April feel a bit more humid overall. For a more detailed look at weather conditions, check out Mittagong weather in April.

In comparing the weather of September to that of May, we can observe some notable differences. September typically experiences a wider temperature range, with minimums dropping to 0°C (32°F) and maximums reaching up to 31°C (87°F), while the average temperature remains similar at 12°C (54°F). In contrast, May has slightly warmer minimums at 2°C (36°F) and a cooler maximum of 24°C (75°F). While both months have about six days of precipitation, September sees less rainfall with 43 mm (1.7 in) compared to May's 54 mm (2.1 in). Furthermore, May tends to be more humid, averaging 72% compared to September’s 64%. For more specific insights about May weather, check Mittagong weather in May.

September generally offers warmer temperatures compared to June, with an average of 12°C (54°F) and a maximum of 31°C (87°F), while June sees cooler conditions, averaging 9°C (49°F) and peaking at 19°C (67°F). Both months feature a similar amount of precipitation; September records 43 mm (1.7 in) over 6 days, while June has slightly less at 38 mm (1.5 in) over 8 days. Additionally, humidity levels are moderate in both months, with September at 64% and June slightly higher at 70%. For a closer look at the weather patterns in June, you can visit Mittagong weather in June.

When comparing the weather in September to that of July, September generally experiences a broader range of temperatures, with a minimum of 0°C (32°F) and a maximum of 31°C (87°F), contrasting with July's cooler range of -2°C (29°F) to 22°C (72°F). The average temperature in September is also higher at 12°C (54°F), compared to July's average of 9°C (48°F). Additionally, September sees slightly more precipitation, totaling 43 mm (1.7 in) over six days, while July has 35 mm (1.4 in) spread over just five days. Humidity levels are comparable, with September at 64% and July slightly higher at 69%. For more detailed insights on July weather, you can refer to this link: Mittagong weather in July.

In comparing the weather of September and August, September generally experiences warmer temperatures, with a minimum of 0°C (32°F), an average of 12°C (54°F), and a maximum of 31°C (87°F). In contrast, August has cooler conditions, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 23°C (73°F) and an average of 9°C (49°F). Precipitation levels are slightly lower in September at 43 mm (1.7 in) over 6 days, compared to August's 59 mm (2.3 in) also over 6 days. Humidity is slightly lower in September at 64%, while August's humidity levels reach 68%. For more detailed information on August weather, you can check Mittagong weather in August.

In September, the weather showcases a wider temperature range with a minimum of 0°C (32°F) and a maximum of 31°C (87°F), averaging around 12°C (54°F). The month experiences a moderate amount of rainfall, totaling 43 mm (1.7 in) over about 6 days, with humidity hovering around 64%. In contrast, October brings slightly warmer temperatures, with minimums at 2°C (37°F) and an average of 15°C (59°F), while still reaching up to 31°C (88°F). However, October is considerably wetter, with precipitation increasing to 93 mm (3.7 in) across 13 rainy days, and a slight decrease in humidity to 61%. For more specific information on weather patterns in the area, see Mittagong weather in October.

In comparing the weather conditions of September and November, we can observe notable differences in temperature and precipitation. September begins with cooler nights, with a minimum temperature dipping to 0°C (32°F), while November's nights are milder, with temperatures starting at a minimum of 5°C (41°F). The average temperatures also rise in November, reaching around 17°C (62°F) compared to September’s average of 12°C (54°F). However, November experiences significantly more rainfall, totaling 109 mm (4.3 in) over 12 days, compared to just 43 mm (1.7 in) over 6 days in September. Despite the increase in precipitation, both months maintain similar humidity levels at 64%. For more detailed insights on November weather, you can visit Mittagong weather in November.

In September, the weather features a wider temperature range, with minimums reaching 0°C (32°F) and maximums peaking at 31°C (87°F), averaging around 12°C (54°F). The month sees about 43 mm (1.7 in) of precipitation over approximately six days, with an average humidity of 64%. In contrast, December brings warmer temperatures, with minimums of 9°C (48°F) and highs soaring to 38°C (101°F), resulting in a more pleasant average of 19°C (66°F). The month experiences increased rainfall, totaling 99 mm (3.9 in) across roughly 15 days, alongside higher humidity at 71%. For a detailed look at the weather specifics, refer to Mittagong weather in December.

Compare Mittagong's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Mittagong

As September rolls into Mittagong, the weather begins to shift, marking a transition from the cooler months to warmer conditions. Daytime temperatures can soar to a toasty 31°C (87°F), while nights remain refreshingly cool, dipping to average lows around 12°C (54°F). This month typically sees about 6 days of precipitation, contributing to the overall humidity level of 64%, making the air feel somewhat muggy at times. Compared to the chill of winter, September's weather injects a newfound warmth and vitality into the region, inviting locals and visitors alike to enjoy the emerging spring blooms. To learn more about seasonal variations in this beautiful area, check out Mittagong Climate.