September Weather in Coolgardie, Australia

Last updated: February 25, 2025

In September, Coolgardie, Australia experiences a striking blend of temperature extremes and low precipitation, creating a unique climate. The maximum temperature can reach a scorching 35°C (95°F), while the average settles around a comfortable 16°C (61°F). Nighttime brings a dramatic drop, with temperatures dipping to a chilly 1°C (34°F). Residents and visitors can expect minimal rain, totaling just 6 mm (0.2 in) over only one day, contributing to a humidity level of 48% that can bring a refreshing contrast to the dry heat of the day. This dynamic weather sets the stage for a distinctly varied experience throughout the month.

September Temperature in Coolgardie

In September, Coolgardie experiences a noticeable shift in temperatures, marking the transition from the cooler winter months to the warmth of spring. With minimums still dipping to around 1°C (34°F), the average temperature rises to a comfortable 16°C (61°F), while daytime highs can reach up to 35°C (95°F). This month showcases a blend of crisp mornings and pleasantly warm afternoons, setting the stage for the hotter months ahead. The upward trend in temperature is evident, as September stands in stark contrast to the chill of July and August, inviting both locals and visitors to embrace the getting warmer days, and the promise of vibrant springtime ahead.

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

The chart illustrates September temperature patterns in Coolgardie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec797674685854535460667177
Data source: Temperature data for Coolgardie 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 Coolgardie

In September, Coolgardie experiences a notable dip in precipitation, receiving just 6 mm (0.2 in) over the month, making it one of the driest periods of the year. This minimal rainfall is distributed across only 1 day, underscoring a trend of fluctuating moisture levels as the region transitions from winter to the beginnings of spring. While earlier months such as February and November witness significantly higher rainfall, September marks a distinct shift towards drier conditions, hinting at the arid climate that characterizes much of the Australian landscape. As the year progresses, the limited precipitation serves as a reminder of the region's variability, where wetter months are followed by sharp decreases in rainfall, creating an intriguing pattern for meteorological observation.

September Precipitation Trends in Coolgardie

The chart displays monthly precipitation patterns in Coolgardie, 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.
JanFebMarAprMayJunJulAugSepOctNovDec194827818191520617286
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Coolgardie

As the seasons shift in Coolgardie, Australia, September marks a notable decline in humidity, dropping to 48%. This transition follows the peak moisture levels of the cooler months, where June recorded the highest humidity at 76%. The gradual decrease from August’s 59% indicates a shift towards the drier conditions characteristic of the approaching summer. Interestingly, this September humidity level aligns more closely with the drier air of late autumn, hinting at the significant swings in moisture that Coolgardie experiences throughout the year. As temperatures begin to rise, the humidity continues its downward trend, foreshadowing the crisp, dry allure of the approaching summer months.

September Average Humidity in Coolgardie

This chart illustrates the average monthly humidity levels in Coolgardie, 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%46%50%63%70%76%72%59%48%36%34%34%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Coolgardie

In September, Coolgardie experiences a UV Index of 9, placing it in the very high exposure category, which means that unprotected skin can burn in as little as 15 minutes. As winter transitions to spring, there's a noticeable rise in UV levels compared to the previous months, reflecting increasing sun intensity. This trend is consistent with the overall pattern observed over the year, where summer months peak at extreme levels of UV radiation. With October bringing an even higher index, residents and visitors should remain vigilant about sun protection during this time. For more information on UV levels year-round, visit Coolgardie UV Index.

Maximum UV Index Levels in Coolgardie for September

The chart shows the monthly maximum UV Index (UVI) for Coolgardie 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.
JanFebMarAprMayJunJulAugSepOctNovDec151513964579111315
Data source: Coolgardie 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 Coolgardie

As September arrives in Coolgardie, Australia, residents are greeted by a delightful 298 hours of sunshine, making it one of the brightest months of the year. This vibrant increase follows a slight dip in the cooler months of June (249 hours) and July (268 hours), ushering in the promise of warmer days ahead. September's sunshine sets the stage for an exciting transition into spring, just shy of the radiant October (331 hours) and the remarkable November (345 hours). The gradual climb from the winter months highlights a trend of increasing sunlight, invigorating the landscape and hinting at the longer, sun-drenched days to come. With its consistent warmth, September shines brightly as a harbinger of the summer glow that awaits Coolgardie.

Monthly Sunshine Duration in Coolgardie: September Highlighted

The September sunshine duration represents the total number of hours Coolgardie 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.
JanFebMarAprMayJunJulAugSepOctNovDec297h289h312h283h275h249h268h286h298h331h345h371h
Data source: Coolgardie September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Coolgardie During September

In Coolgardie, Australia, September offers a promising likelihood of sunny weather, matching the bright and vibrant month of August with a 75% chance of sunshine. This trend signifies a transition from the cooler winter months, where the sunniest days dipped to 46% in July. As spring approaches, September's sunny disposition not only brings warmth back into the air but also rejuvenates the landscape, making it a delightful time to explore the region. With October maintaining a decent 68% chance of sun, the idyllic weather continues, illustrating how the arrival of spring heralds a more cheerful and sunny climate in Coolgardie.

Percentage of Sunny Days in September in Coolgardie

The chart illustrates the percentage of sunny days in Coolgardie 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 Coolgardie experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec68%66%65%58%50%52%46%75%75%68%66%84%
Data source: Coolgardie September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Coolgardie in September

In Coolgardie, Australia, September marks a subtle transition as daylight begins to stretch once more, providing approximately 11 hours of sunlight each day. This gradual increase follows the shorter days of winter, where daylight dipped to just 10 hours. The trend observed from April to August shows a steady decline in daylight, hinting at the waning of the cooler months. However, as September rolls in, residents can anticipate a return to longer days, heralding the approach of spring. As the year progresses, the daylight gradually increases, peaking in December with a generous 14 hours, showcasing the distinct seasonal shifts that characterize this region.

Average Daylight Hours in Coolgardie for September

The chart illustrates the variation in daylight duration in Coolgardie throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 53m13h 9m12h 14m11h 18m10h 32m10h 9m10h 20m11h11h 53m12h 50m13h 40m14h 6m
Data source: Coolgardie daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Coolgardie

As September unfolds in Coolgardie, Australia, the wind begins to pick up slightly from the calmer months of winter, with an average speed of 4.2 m/s (9 mph). This gentle breeze ushers in a shift from the cooler, stiller days of July and August, inviting a renewed vibrancy into the environment. While the winds are not as fierce as those recorded in December, where they peak at 4.8 m/s (11 mph), September still holds its own in the annual cycle, nestled comfortably between the summer and winter averages. This transition hints at oncoming warmth, making it a delightful time for residents and visitors to enjoy the crisp air as spring approaches. As the months roll on toward October and November, the consistency in wind speeds suggests a gentle yet steady embrace of the shifting seasons, as nature prepares for its lively blooms.

Average September Wind Speed in Coolgardie

The chart displays monthly wind speed patterns in Coolgardie, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.34.63.93.83.73.54.83.94.2 m/s4.54.54.8
Data source: Coolgardie September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Coolgardie Compares to Other Months

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

In September, the weather features a more moderate temperature range with a minimum of 1°C (34°F) and an average of 16°C (61°F), while the maximum can reach up to 35°C (95°F). This month experiences minimal rainfall, with only 6 mm (0.2 in) over 1 day, and a humidity level of 48%. In contrast, January showcases much hotter conditions, with temperatures ranging from a minimum of 11°C (52°F) to a scorching maximum of 45°C (112°F) and an average of 26°C (79°F). The precipitation in January is slightly higher, totaling 19 mm (0.8 in) over 3 days, coupled with lower humidity at 36%. For more detailed information, you can check Coolgardie weather in January.

September and February present quite contrasting weather conditions. In September, temperatures can range from a chilly 1°C (34°F) at night to a warm 35°C (95°F) during the day, with an average of 16°C (61°F). The month is relatively dry, experiencing only 6 mm (0.2 in) of precipitation over just 1 day, and a humidity level of 48%.

In contrast, February brings much warmer temperatures, with lows of 11°C (52°F) and highs soaring to 42°C (109°F), averaging 25°C (77°F). This month sees significantly more rainfall, totaling 48 mm (1.9 in) across 5 days, while humidity remains slightly lower at 46%. For more detailed insights on February weather, you can check Coolgardie weather in February.

When comparing the weather in September and March, it's clear that March experiences significantly warmer temperatures overall. September has a minimum temperature of 1°C (34°F) and an average of 16°C (61°F), while March boasts a minimum of 9°C (48°F) and an average temperature of 23°C (74°F). Max temperatures also soar higher in March, reaching up to 44°C (111°F) compared to September's maximum of 35°C (95°F). Additionally, March sees more precipitation, with 27 mm (1.0 in) falling over four days, in contrast to September's mere 6 mm (0.2 in) across just one day. Humidity levels are similar, at 48% in September and 50% in March, making both months relatively comfortable. For a more detailed look at the weather patterns in March, you can visit Coolgardie weather in March.

When comparing the weather in September and April, we see notable differences in temperature and humidity. September typically experiences a minimum temperature of 1°C (34°F) and an average of 16°C (61°F), with a maximum reaching up to 35°C (95°F). In contrast, April boasts a higher minimum temperature of 5°C (42°F) and an average of 20°C (68°F), peaking at a scorching 38°C (100°F). Additionally, April has slightly more precipitation, measuring 8 mm (0.3 in) over one day, compared to September's 6 mm (0.2 in) on the same number of days. Notably, the humidity is higher in April at 63%, compared to September's 48%. For more detailed information, you can check Coolgardie weather in April.

September and May present contrasting weather conditions. In September, temperatures can range from a chilly 1°C (34°F) at night to a scorching 35°C (95°F) during the day, with an average of 16°C (61°F) and relatively low humidity at 48%. This month typically sees minimal precipitation, averaging just 6 mm (0.2 in) over about one day. In contrast, May offers slightly milder temperatures, with a minimum of 2°C (35°F) and a maximum of 31°C (88°F), averaging 15°C (58°F). The month is characterized by higher humidity at 70% and increased rainfall totaling 18 mm (0.7 in) over approximately two days. For a deeper look at the weather trends, you can check Coolgardie weather in May.

In comparing the weather between September and June, it becomes evident that September experiences a wider temperature range, with temperatures fluctuating from a minimum of 1°C (34°F) to a maximum of 35°C (95°F), and an average of 16°C (61°F). In contrast, June is notably cooler, with a minimum of 1°C (34°F), an average of 12°C (54°F), and a maximum of 28°C (83°F). Furthermore, September sees significantly less precipitation, measuring only 6 mm (0.2 in) over just one day, whereas June records 19 mm (0.8 in) across three days, resulting in higher humidity levels of 76% during June compared to 48% in September. For more detailed insights into June weather, check out Coolgardie weather in June.

When comparing the weather in September and July, it's evident that September experiences a broader temperature range, with minimums of 1°C (34°F), averages of 16°C (61°F), and maximums reaching 35°C (95°F). In contrast, July's temperatures are cooler, showcasing minimums of 1°C (34°F), average temperatures around 11°C (53°F), and maximums of 25°C (77°F). Furthermore, September is relatively drier, with only 6 mm (0.2 in) of precipitation over just one day compared to July's 15 mm (0.6 in) over two days. Interestingly, July also has higher humidity at 72%, while September maintains a lower humidity level of 48%. For more detailed insights, you can check the specific data at Coolgardie weather in July.

In comparing the weather of September and August, September typically offers warmer average temperatures, with a minimum of 1°C (34°F) and an average of 16°C (61°F), while August has a slightly cooler average of 12°C (54°F). The maximum temperature in September can reach a high of 35°C (95°F), compared to August's maximum of 32°C (90°F). Additionally, September experiences significantly less precipitation, with only 6 mm (0.2 in) over just one day, whereas August sees more rainfall totaling 20 mm (0.8 in) spread over four days. The humidity is also lower in September at 48%, compared to 59% in August. For more detailed information about August's weather, you can view Coolgardie weather in August.

Comparing the weather in September and October reveals notable differences in temperature and precipitation. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 35°C (95°F), with an average of 16°C (61°F) and only 6 mm of precipitation on just one day. In contrast, October sees a slight increase in minimum temperature to 4°C (39°F) and an average of 19°C (66°F), with maximum temperatures rising to 38°C (102°F). Additionally, October experiences increased rainfall, with 17 mm over three days, and lower humidity at 36%. For a more detailed look at the weather patterns, check out Coolgardie weather in October.

In September, the weather is marked by a minimum temperature of 1°C (34°F) and an average of 16°C (61°F), with highs reaching up to 35°C (95°F). This month typically experiences minimal rainfall, accumulating just 6 mm (0.2 in) over 1 day, while humidity sits at a relatively comfortable 48%. In contrast, November enjoys milder temperatures with a higher minimum of 6°C (43°F) and an average of 22°C (71°F), peaking at a scorching 45°C (113°F). However, November also sees increased precipitation at 28 mm (1.1 in) over 3 days, accompanied by lower humidity levels of 34%. For more detailed information about the weather in November, you can visit Coolgardie weather in November.

In September, temperatures range quite dramatically from a minimum of 1°C (34°F) to a maximum of 35°C (95°F), with an average temperature of 16°C (61°F). The month experiences minimal precipitation, recorded at just 6 mm (0.2 in) over a single day, and humidity levels are relatively moderate at 48%. In contrast, December sees warmer conditions overall, with a minimum of 8°C (47°F) and a maximum that can soar up to 44°C (111°F), leading to an average temperature of 25°C (78°F). Like September, December also receives limited rainfall of 6 mm (0.2 in) across one day, but with lower humidity at 34%. For a closer look at the December weather patterns, be sure to check out Coolgardie weather in December.

Compare Coolgardie's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Coolgardie

As September unfolds in Coolgardie, the weather begins to transition, marked by a notable increase in temperatures compared to the chill of winter. Days can soar to a warm 35°C, providing a stark contrast to the cool evenings that can dip to a brisk 1°C. While the month typically enjoys pleasant averages around 16°C, the limited rainfall of just 6 mm across a single day accentuates the dry and inviting atmosphere. With humidity hovering around 48%, this month stands out as a perfect prelude to the hotter months ahead, offering a unique blend of warmth during the day and coolness at night. For more insights on climate patterns, explore Coolgardie Climate.