September Weather in Newcastle, Australia

Last updated: February 26, 2025

In September, Newcastle, Australia, experiences a delightful transition into spring, with maximum temperatures reaching up to 28°C (83°F) and an average of 17°C (62°F). While the minimum temperatures drop to a comfortable 11°C (52°F), the weather remains pleasantly warm. This month also sees approximately 47 mm (1.9 in) of rain, spread over about 7 days, contributing to a humidity level of around 63%. Visitors can look forward to a mix of sunny days and refreshing showers, perfect for enjoying the vibrant coastal atmosphere.

September Temperature in Newcastle

In September, Newcastle experiences a refreshing transition as the winter chill gives way to warmer spring temperatures. With a minimum of 11°C (52°F) and a maximum reaching 28°C (83°F), the average temperature climbs to a pleasant 17°C (62°F). This month marks a notable upward shift compared to the cooler months of July and August, hinting at the vibrant spring days ahead. As the city begins to bloom, locals and visitors alike can enjoy the inviting weather that often encourages outdoor exploration and social gatherings. With warm days and cool nights, September in Newcastle truly embodies the essence of spring warmth, setting the stage for even more delightful days to come.

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

The chart illustrates September temperature patterns in Newcastle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec737372686460595962656770
Data source: Temperature data for Newcastle 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 Newcastle

In September, Newcastle experiences a modest precipitation total of 47 mm (1.9 in), falling slightly below the preceding month's average rainfall. With 7 days of rain, September aligns well with the patterns of earlier months, marking the transition into the warmer spring season. This gradual decrease in precipitation reflects a trend seen from the peak rainfall in March, where an impressive 201 mm (7.9 in) was recorded. As days shorten and temperatures begin to rise, the consistent, albeit lighter rainfall hints at the region's shifting climate, paving the way for October's anticipated increase in moisture. Overall, September serves as a gentle reminder of Newcastle's dynamic weather, balancing the lush greens of winter with the promise of a vibrant spring.

September Precipitation Trends in Newcastle

The chart displays monthly precipitation patterns in Newcastle, 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.
JanFebMarAprMayJunJulAugSepOctNovDec531272014856129694447938174
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Newcastle

As September unfolds in Newcastle, Australia, the humidity begins to dip, marking a refreshing transition toward the end of winter. With an average humidity of 63%, this month sees a slight decline compared to the slightly higher levels of the previous months. The overall trend throughout the year reveals a gradual increase in humidity from the cooler months of June and July, peaking in April at 75%. As spring approaches, September serves as a balance point, hinting at drier days ahead in October when humidity decreases further to 55%. This seasonal shift not only showcases the unique climate of Newcastle but also signals the advent of warmer, more inviting weather.

September Average Humidity in Newcastle

This chart illustrates the average monthly humidity levels in Newcastle, 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.
JanFebMarAprMayJunJulAugSepOctNovDec65%69%72%75%74%72%68%67%63%55%58%68%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Newcastle

As September arrives in Newcastle, Australia, the UV Index stands at a very high level of 8, signaling a shift from the winter months. With a burn time of just 15 minutes, it's crucial for residents and visitors to take proper sun protection measures during this time. This monthly transition reflects a gradual increase in UV exposure leading into spring, following the moderate levels experienced in July and August. Notably, September's UV Index sets the stage for the months ahead, where indices will escalate again, peaking at 15 in December. To stay informed about UV ratings and plan your sun safety strategies effectively, visit the comprehensive Newcastle UV Index.

Maximum UV Index Levels in Newcastle for September

The chart shows the monthly maximum UV Index (UVI) for Newcastle 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.
JanFebMarAprMayJunJulAugSepOctNovDec151412864468101215
Data source: Newcastle 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 Newcastle

September in Newcastle, Australia, shines brightly with an impressive 290 hours of sunshine, marking a significant leap from the previous months. As winter bids farewell, the days grow longer and sunnier, showcasing a remarkable upward trend that begins in August and continues into the spring. After the cooler months of June and July, which saw fewer sunny hours, September serves as a refreshing transition, inviting both locals and visitors to bask in the warmth. This sunny resurgence sets the stage for an even sunnier October, which boasts 298 hours, and paves the way for the summer months ahead. As nature awakens, Newcastle's vibrant atmosphere comes alive, making September a delightful time to explore the great outdoors.

Monthly Sunshine Duration in Newcastle: September Highlighted

The September sunshine duration represents the total number of hours Newcastle 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.
JanFebMarAprMayJunJulAugSepOctNovDec265h276h273h268h254h222h247h278h290h298h306h327h
Data source: Newcastle September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Newcastle During September

In Newcastle, Australia, September offers a favorable 62% chance of sunny weather, aligning closely with the 62% experienced in July. As winter transitions to spring, this month follows the higher percentages of sunshine seen in August (69%) and maintains a positive trend compared to the cooler months of June (53%) and May (56%). This period marks a delightful shift, signaling the onset of warmer days and an increasing likelihood of sunshine as the year progresses. Potential beach outings and outdoor activities can be well-planned, taking advantage of this sunny window before the clouds of November (27%) roll in.

Percentage of Sunny Days in September in Newcastle

The chart illustrates the percentage of sunny days in Newcastle 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 Newcastle experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec51%41%39%68%56%53%62%69%62%56%27%45%
Data source: Newcastle September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Newcastle in September

As winter wanes in Newcastle, Australia, September marks a pivotal transition in daylight duration. With around 11 hours of daylight, the days begin to lengthen again, gently nudging residents toward sunnier months. This increase signals the shift from the deep winter months of June and July, which offer just 9 and 10 hours of daylight, respectively. As spring approaches, the trend towards longer days continues, setting the stage for the 12 hours of daylight that October brings. This gradual elongation reflects nature's rhythm, inviting both locals and visitors to embrace the vibrant awakening of the season ahead.

Average Daylight Hours in Newcastle for September

The chart illustrates the variation in daylight duration in Newcastle throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 2m13h 15m12h 15m11h 14m10h 24m9h 59m10h 12m10h 55m11h 53m12h 53m13h 47m14h 16m
Data source: Newcastle daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Newcastle

As September unfolds in Newcastle, Australia, the winds begin to dance with a delightful average speed of 5.8 m/s (13 mph), positioning it among the brisker months of the year. Following the gentler breezes of April and May, which saw averages of 3.8 m/s and 4.9 m/s respectively, September's winds mark a notable return to the more invigorating gusts experienced in the mid-year months of June and July. This uptick not only enhances the coastal charm of Newcastle but also signals a transition towards spring, as gusts revive the vibrant outdoor atmosphere. Interestingly, September's winds closely mirror the strength of those in March, hinting at an exhilarating shift in seasonal dynamics and providing a refreshing prelude to the warmer months ahead.

Average September Wind Speed in Newcastle

The chart displays monthly wind speed patterns in Newcastle, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.55.65.93.84.95.65.95.15.8 m/s5.15.95.2
Data source: Newcastle September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Newcastle Compares to Other Months

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

September and January present contrasting weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), with an average of 17°C (62°F) and a total precipitation of 47 mm (1.9 in) over about 7 days. The humidity hovers around 63%. In contrast, January offers warmer conditions, featuring a minimum of 17°C (64°F) and a maximum of 33°C (92°F), with an average of 23°C (74°F). The precipitation increases slightly to 53 mm (2.1 in) over the same number of rainy days, while humidity rises to 65%. For more detailed information, check out Newcastle weather in January.

September typically experiences milder temperatures compared to February, with minimums around 11°C (52°F) and maximums reaching 28°C (83°F). In contrast, February sees warmer weather, with minimum temperatures starting at 18°C (65°F) and highs peaking at 33°C (92°F). Precipitation is another notable difference; September averages 47 mm (1.9 inches) over about 7 days, while February is significantly wetter, receiving 126 mm (5.0 inches) across 11 days. Additionally, humidity levels are slightly higher in February at 69%, compared to September’s 63%. For more detailed information, check out Newcastle weather in February.

In comparing the weather of September and March, it is notable that March generally exhibits warmer temperatures than September. September experiences a minimum temperature of 11°C (52°F) and an average of 17°C (62°F), with maximums reaching up to 28°C (83°F). In contrast, March has a higher minimum of 17°C (63°F) and an average temperature of 22°C (72°F), peaking at a maximum of 32°C (90°F). While September sees relatively moderate precipitation of 47 mm (1.9 in) over about 7 days, March is significantly wetter, with 201 mm (7.9 in) over 17 days, contributing to an increased humidity level of 72%. For more detailed insights, check out Newcastle weather in March.

When comparing the weather in September and April, it's clear that both months experience mild temperatures, but with some notable differences. In September, daily highs average around 28°C (83°F), while April sees slightly higher maximum temperatures of 29°C (85°F). However, September's average temperature is lower at 17°C (62°F) compared to April's 20°C (69°F). Additionally, April tends to have higher humidity levels at 75%, compared to September’s 63%. Precipitation is fairly consistent, with September receiving 47 mm over 7 days and April slightly more at 48 mm over 10 days. For a more detailed look at April weather, you can check Newcastle weather in April.

In comparing the weather of September and May, both months feature a minimum temperature of around 11°C (52°F), but May tends to be slightly warmer, with an average temperature of 18°C (64°F) compared to September's 17°C (62°F). The maximum temperatures also differ, as September can reach up to 28°C (83°F), while May's peak is more moderate at 24°C (76°F). Additionally, May sees a bit more rainfall, with 56 mm (2.2 in) of precipitation over 9 days, compared to September's 47 mm (1.9 in) over 7 days. Notably, humidity levels are higher in May at 74%, compared to 63% in September, contributing to a different seasonal feel. For more details, you can check out Newcastle weather in May.

When comparing the weather in September and June, September tends to be warmer, with average temperatures reaching 17°C (62°F) and maximums hitting 28°C (83°F), while June has a cooler average of 15°C (60°F) and a maximum of 22°C (72°F). September experiences less precipitation, totaling 47 mm (1.9 in) over about 7 days, compared to June's heavier rainfall of 129 mm (5.1 in) spread over 15 days. Additionally, humidity levels are slightly lower in September at 63%, whereas June has a higher humidity level of 72%. For a detailed look at the weather during June, check out Newcastle weather in June.

In comparison to July, September experiences milder temperatures, with a minimum of 11°C (52°F) and a maximum of 28°C (83°F), while July has slightly cooler temperatures ranging from 9°C (49°F) to a maximum of 21°C (71°F). The average temperature in September is higher at 17°C (62°F), compared to July's average of 15°C (59°F). Although September sees less precipitation at 47 mm (1.9 in) over 7 days, compared to July's 69 mm (2.7 in) over 6 days, it is also noteworthy that September's humidity is marginally lower at 63%, while July has a humidity level of 68%. For more detailed weather information, you can visit Newcastle weather in July.

In comparing the weather between September and August, September generally presents milder temperatures with a minimum of 11°C (52°F) and an average of 17°C (62°F), peaking at a maximum of 28°C (83°F). In contrast, August tends to be cooler, with a minimum of 9°C (48°F), an average of 15°C (59°F), and a maximum of only 22°C (72°F). Both months see similar precipitation levels, with September recording 47 mm (1.9 in) over 7 days compared to August's 44 mm (1.7 in) over 5 days. Notably, humidity in September is slightly lower at 63% compared to 67% in August, making September feel a bit more comfortable overall. For a more detailed look at August's weather patterns, visit Newcastle weather in August.

September and October showcase a gradual transition in weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (83°F), with an average of 17°C (62°F). The month sees about 47 mm (1.9 in) of precipitation across roughly 7 days, accompanied by a humidity level of 63%. In contrast, October presents slightly warmer temperatures, with a minimum of 13°C (56°F) and an average of 18°C (65°F), while still reaching a maximum of 28°C (83°F). However, it experiences more rainfall, totaling 93 mm (3.6 in) over approximately 10 days, and a reduced humidity of 55%. For more detailed information, you can visit Newcastle weather in October.

In September, temperatures in Newcastle range from a cool 11°C (52°F) at night to a warm 28°C (83°F) during the day, with an average of 17°C (62°F). The month sees about 47 mm (1.9 in) of rain over approximately 7 days, along with a humidity level of 63%. In contrast, November experiences slightly warmer temperatures, with nighttime lows of 14°C (58°F) and daytime highs reaching up to 33°C (91°F), averaging around 20°C (68°F). Precipitation increases to 81 mm (3.2 in) over 9 days, but humidity decreases to 57%. For more detailed insights, check Newcastle weather in November.

In September, the weather is characterized by milder temperatures, with averages around 17°C (62°F), and a maximum of 28°C (83°F). The month sees approximately 47 mm of precipitation spread over 7 days, resulting in a humidity level of 63%. Conversely, December experiences warmer conditions, with average temperatures rising to 21°C (71°F) and a peak of 35°C (95°F). This month also has increased precipitation, totaling 74 mm over 11 days, accompanied by a slight rise in humidity to 68%. For a more detailed look, you can check Newcastle weather in December.

Compare Newcastle's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Newcastle

As September rolls in, Newcastle experiences a refreshing change, with temperatures gradually rising and the city shedding the chill of winter. This month showcases a comfortable average temperature that invites outdoor activities, while still maintaining a pleasant humidity level that is typical for spring. Although rain may visit on a few days, its moderate amount is not enough to dampen the spirit of the season. Compared to summer's heat or winter's briskness, September strikes a lovely balance, making it a delightful time to explore the vibrant surroundings of Newcastle. For more insight into what to expect throughout the year, check out Newcastle Climate.