September Weather in Alice Springs, Australia

Last updated: February 25, 2025

In September, Alice Springs experiences a remarkable transition from winter to spring, with temperatures exhibiting a wide range. The maximum temperature can soar up to 39°C (102°F), averaging a pleasant 20°C (69°F), while nighttime lows can dip to a cool 3°C (37°F). With only 5 mm (0.2 in) of precipitation occurring on just 1 day, the month remains predominantly dry, contributing to a low humidity level of 32%. This unique climate offers a mix of warm days and cool nights, perfect for outdoor activities in the stunning Australian outback.

September Temperature in Alice Springs

In September, Alice Springs transitions into a warmer climate, with temperatures beginning to climb gradually after the cooler winter months. The minimum temperature hovers around 3°C (37°F), providing a refreshing chill in the early mornings, while the average reaches a comfortable 20°C (69°F). As the sun shines brighter, the maximum temperature can soar to 39°C (102°F), hinting at the intense heat that characterizes the Australian Outback. This month serves as a delightful bridge between the coolness of winter and the extreme summer heat, making it an ideal time for outdoor adventures and exploration in this stunning region.

September Weather in Alice Springs: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Alice Springs, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec878481726154565969777985
Data source: Temperature data for Alice Springs generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Alice Springs

In September, Alice Springs experiences a modest uptick in precipitation, receiving 5 mm (0.2 in) of rain over one day. This slight increase marks a transition from the arid winter months of June through August, which typically see little to no rainfall. The pattern reveals that as the year progresses, the desert climate gradually shifts towards the wetter months, with October and November predicting more substantial rainfalls of 18 mm (0.7 in) and 29 mm (1.2 in), respectively. Thus, September serves as a subtle yet essential precursor to the wetter spring season, offering a brief reprieve from the dry conditions that dominate the earlier months of the year.

September Precipitation Trends in Alice Springs

The chart displays monthly precipitation patterns in Alice Springs, 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.
JanFebMarAprMayJunJulAugSepOctNovDec222233133215192942
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Alice Springs

In September, Alice Springs experiences a notable dip in humidity, with levels dropping to 32%, the lowest recorded for the year. This decrease follows a gradual decline from the higher humidity peak in March at 58%, and continues the trend of decreasing moisture as the region transitions into the warmer months. August ends with a humidity of 38%, setting the stage for September's shift. As the landscape dries out moving towards October, where humidity further declines to 23%, it's clear that spring in Alice Springs ushers in a fresher, crisper atmosphere, heralding the impending heat of summer.

September Average Humidity in Alice Springs

This chart illustrates the average monthly humidity levels in Alice Springs, 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.
JanFebMarAprMayJunJulAugSepOctNovDec36%40%58%49%46%46%45%38%32%23%31%35%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Alice Springs

In September, Alice Springs continues to experience a high UV Index of 12, placing it in the extreme exposure category with a quick burn time of just 10 minutes. This month marks a slight increase from the lower levels seen in winter, where the index dipped to 6 and 7 in June and July. As the transition to warmer months begins, the UV radiation remains a significant concern, aligning closely with the trends of April and October, both having similar extreme ratings. The consistency of extreme UV levels throughout the year underscores the importance of sun safety measures, as residents and visitors must remain vigilant when outdoors. For more detailed information, visit the Alice Springs UV Index.

Maximum UV Index Levels in Alice Springs for September

The chart shows the monthly maximum UV Index (UVI) for Alice Springs 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.
JanFebMarAprMayJunJulAugSepOctNovDec171715129671012141617
Data source: Alice Springs 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 Alice Springs

In September, Alice Springs basks in 305 hours of sunshine, reflecting a delightful transition towards the warmer months. As the daylight hours noticeably increase since winter, this vibrant snapshot of sunlight sets the tone for the approaching summer. Following a pattern established earlier in the year, September's sunshine hours closely rival those of the preceding months, notably August's 306 hours. This consistent exposure to sunlight hints at a gradual upward trend, culminating in an impressive 332 hours by October and peaking at 345 hours in December. Residents and visitors alike can revel in the golden warmth that September delivers, paving the way for even brighter days ahead in the heart of Australia.

Monthly Sunshine Duration in Alice Springs: September Highlighted

The September sunshine duration represents the total number of hours Alice Springs 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.
JanFebMarAprMayJunJulAugSepOctNovDec283h307h312h293h291h275h292h306h305h332h333h345h
Data source: Alice Springs September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Alice Springs During September

In Alice Springs, Australia, September boasts a 79% chance of sun, making it one of the more favorable months for sunshine as the region transitions into spring. This period follows the peak months of April (94%) and August (93%), indicating a strong trend of sunny weather during the late winter and early spring months. Notably, September’s likelihood of sun is significantly higher than the earlier months like March (58%) and even maintains a robust position compared to the late spring and summer months, such as October (74%) and November (74%). With its generous dose of sunshine, September is indeed a splendid time to experience the warm and inviting landscapes of this desert region.

Percentage of Sunny Days in September in Alice Springs

The chart illustrates the percentage of sunny days in Alice Springs 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 Alice Springs experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec65%71%58%94%67%62%85%93%79%75%74%74%
Data source: Alice Springs September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Alice Springs in September

In September, daylight duration in Alice Springs stabilizes at 11 hours, marking a transition as the region shifts from the shorter winter days towards the longer days of summer. This month shares daylight hours with both the preceding August and the following October, creating a consistent pattern that hints at the gradual lengthening of daylight as the year progresses. The trend reflects the natural ebb and flow of seasons, with daylight peaking in the warmer months of December and January, reaching a maximum of 13 hours. As September arrives, residents can enjoy the balance of warmth and light, while looking forward to the brighter days ahead.

Average Daylight Hours in Alice Springs for September

The chart illustrates the variation in daylight duration in Alice Springs throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 24m12h 52m12h 11m11h 30m10h 57m10h 40m10h 49m11h 18m11h 56m12h 38m13h 14m13h 33m
Data source: Alice Springs daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Alice Springs

As September rolls in, Alice Springs experiences a noticeable uptick in wind speed, averaging 4.4 m/s (10 mph), the highest since April. This increase marks a return to the breezy conditions that characterized the earlier months of the year, where January and February also saw similar gusts. The winds begin to pick up after a quieter June, which recorded a gentle 3.2 m/s (7 mph), hinting at the return of spring vitality. With the winds picking up again in September, the town transitions into a lively season, inviting locals and visitors alike to embrace the invigorating atmosphere. As autumn approaches, it's clear that the September winds bring both a refreshing change and a sense of connection to the vibrant landscape that surrounds this unique outback community.

Average September Wind Speed in Alice Springs

The chart displays monthly wind speed patterns in Alice Springs, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.33.73.93.73.23.83.84.4 m/s4.33.74.0
Data source: Alice Springs September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Alice Springs Compares to Other Months

The weather in Alice Springs 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 Alice Springs and find detailed weather information for every month.

September weather in Alice Springs is characterized by relatively mild temperatures, with a minimum of 3°C (37°F) and an average of 20°C (69°F), while it can peak at a scorching 39°C (102°F). The month sees very little precipitation, with only 5 mm (0.2 in) occurring on one day and humidity levels around 32%. In contrast, January is notably warmer, with minimum temperatures starting at 13°C (56°F) and average highs reaching 31°C (87°F), occasionally soaring to a blistering 44°C (111°F). Precipitation in January is also higher at 22 mm (0.9 in), typically falling over two days, and the humidity slightly increases to 36%. For more detailed information on January weather, you can check Alice Springs weather in January.

September and February offer notably different weather experiences. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 39°C (102°F), with an average of 20°C (69°F). The month sees minimal precipitation, averaging only 5 mm (0.2 in) over just one day, and maintains a relatively low humidity level of 32%. Conversely, February is warmer, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 41°C (107°F) and an average of 29°C (84°F). It experiences more precipitation at 22 mm (0.9 in) but still over just one day, and the humidity is higher at 40%. For more details, you can check Alice Springs weather in February.

September and March present two contrasting weather scenarios. In September, temperatures range from a cool 3°C (37°F) to a warm 39°C (102°F), with an average of 20°C (69°F). The month is relatively dry, receiving only 5 mm (0.2 in) of precipitation over just one day, and maintaining a low humidity level of 32%. In contrast, March is significantly warmer, featuring a minimum temperature of 12°C (53°F) and maximum reaching up to 42°C (107°F), with an average of 27°C (81°F). This month sees increased precipitation at 33 mm (1.3 in) over two days, and humidity levels rise notably to 58%. For a more detailed look at March weather, visit Alice Springs weather in March.

When comparing the weather in September and April, we notice some distinct differences. September typically sees a broader temperature range, with minimums reaching as low as 3°C (37°F) and maximums soaring up to 39°C (102°F), while the average temperature is around 20°C (69°F). In contrast, April offers a warmer minimum temperature of 6°C (42°F) and a slightly higher average of 22°C (73°F), with maximums not exceeding 37°C (99°F). Precipitation is minimal in both months, with September experiencing 5 mm over one day, whereas April enjoys even drier conditions with just 1 mm and no recorded rainfall. Furthermore, April's humidity is notably higher at 49% compared to September's drier 32%. For a closer look at weather specifics, you can check out Alice Springs weather in April.

When comparing the weather in September and May, September tends to be warmer overall, with maximum temperatures reaching up to 39°C (102°F), while May's highest temperature is more moderate at 33°C (91°F). Both months experience relatively low precipitation, but September has a slightly higher average with 5 mm (0.2 in) compared to May's 3 mm (0.1 in), and May typically enjoys a drier spell with no recorded precipitation days. Additionally, May has higher humidity levels at 46%, creating a more humid atmosphere compared to September's 32%. For a more detailed look at the climate, check out Alice Springs weather in May.

When comparing the weather in September and June, a notable difference in temperature and humidity can be observed. September typically features a minimum temperature of 3°C (37°F), an average of 20°C (69°F), and a maximum cap of 39°C (102°F), alongside relatively low humidity at 32% and minimal precipitation of only 5 mm over a single day. In contrast, June has cooler temperatures, with a minimum of -2°C (29°F), an average of 12°C (54°F), and a maximum of 31°C (88°F). The humidity is higher in June at 46%, but it experiences virtually no precipitation, recording only 2 mm across zero rainy days. For a more detailed look at June weather, check out Alice Springs weather in June.

When comparing the weather in September and July, it’s evident that September is significantly warmer. The average temperature in September reaches 20°C (69°F), with a maximum of 39°C (102°F), while July's average is much cooler at 13°C (56°F) and a maximum of just 31°C (88°F). Additionally, September sees a minimal 5 mm (0.2 in) of precipitation over just one day, whereas July has even less rainfall at 2 mm (0.1 in) with no rainy days at all. Interestingly, July also has a higher humidity level at 45%, compared to September's 32%. For a more detailed look at the weather trends, you can check out Alice Springs weather in July.

September weather in Alice Springs shows a notable increase in temperature compared to August, with minimums rising from 0°C (32°F) to 3°C (37°F) and maximums reaching up to 39°C (102°F) as opposed to August's peak of 32°C (90°F). The average temperature also climbs from 15°C (60°F) in August to a warmer 20°C (69°F) in September. Interestingly, while September records a slight increase in precipitation (5 mm over 1 day) compared to August, which had virtually no precipitation, the humidity is lower in September at 32% compared to 38% in August. For more detailed insights into August's weather, you can check Alice Springs weather in August.

September and October in Alice Springs exhibit notable differences in weather patterns. September experiences a minimum temperature of 3°C (37°F) and an average of 20°C (69°F), with maximum temperatures peaking at 39°C (102°F). The month sees minimal precipitation of just 5 mm (0.2 in) over one day and a relatively dry humidity level of 32%. In contrast, October brings slightly warmer temperatures, with a minimum of 7°C (44°F) and an average of 25°C (77°F), while still reaching a high of 40°C (105°F). However, October experiences more rainfall, totaling 18 mm (0.7 in) over two days, and a decrease in humidity to 23%. For more details on October weather, visit Alice Springs weather in October.

In September, the weather is characterized by a cooler climate with a minimum temperature of 3°C (37°F) and an average of 20°C (69°F). The month is relatively dry, receiving only about 5 mm (0.2 in) of precipitation over just one day, and maintains a humidity level of 32%. In contrast, November experiences warmer temperatures, with a minimum of 8°C (47°F) and an average high of 26°C (80°F). However, it also sees increased rainfall, totaling 29 mm (1.2 in) over three days. Humidity remains similar to September at 31%. For more details, you can check Alice Springs weather in November.

September and December in Alice Springs exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 39°C (102°F), with an average of 20°C (69°F) and minimal precipitation of just 5 mm (0.2 in) occurring on only one day. The humidity is relatively low at 32%, making for comfortable conditions.

In contrast, December sees significantly warmer temperatures, with a minimum of 11°C (52°F) and a maximum reaching up to 45°C (113°F). The average temperature rises to 30°C (86°F), accompanied by increased precipitation of 42 mm (1.7 in) over three days, and a slightly higher humidity level of 35%. For more details, you can check out the Alice Springs weather in December.

Compare Alice Springs's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Alice Springs

September in Alice Springs marks a transition into warmer days, showcasing a distinct shift from the cooler winter months. With an average temperature of 20°C (69°F) and the occasional peak reaching up to 39°C (102°F), the days become more inviting for outdoor activities. Interestingly, rainfall is quite rare, with only 5 mm recorded over a single day, allowing the arid landscape to bask in the sun. This month also brings lower humidity levels at 32%, contributing to more comfortable conditions compared to the sultry summer months. For a deeper understanding of what to expect throughout the year, check out Alice Springs Climate.