September Weather in Cooktown, Australia

Last updated: February 26, 2025

In September, Cooktown, Australia experiences delightful weather, with temperatures ranging from a comfortable 16°C (61°F) at night to a warm 28°C (83°F) during the day. The average temperature hovers around 24°C (75°F), making it an ideal time for outdoor activities. While the month sees a modest 21 mm (0.8 in) of rainfall spread over 5 days, the relatively high humidity of 76% ensures a refreshing atmosphere. This combination of warmth and occasional rain creates a vibrant landscape, perfect for exploring the beauty of Cooktown.

September Temperature in Cooktown

In September, Cooktown experiences a gentle transition into spring, with temperatures showcasing a pleasing warmth. The minimum temperature dips to a cool 16°C (61°F), providing a refreshing start to the day. As the sun rises higher, the average temperature settles around a comfy 24°C (75°F), while the maximum temperature reaches a pleasant 28°C (83°F). This pattern reflects a gradual warming trend from the cooler winter months, making September an ideal time to explore the natural beauty of Cooktown without the extremes of summer. With such inviting weather, outdoor adventures and sightseeing flourish, inviting both locals and visitors to bask in the vibrant atmosphere of this charming Australian town.

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

The chart illustrates September temperature patterns in Cooktown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec818180797673737374778081
Data source: Temperature data for Cooktown 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 Cooktown

In September, Cooktown experiences a notable shift in precipitation patterns, with rainfall amounting to 21 mm (0.8 in) spread across just 5 days. This slight increase from the drier months of August and July marks a transition toward the upcoming wet season. The rainfall, while minimal compared to the peak months of January and March, signifies the gradual reawakening of the landscape after the drier winter months. As October approaches, with an expected jump to 49 mm, the progressive rise in September's precipitation sets the stage for increased moisture and growth in the region. Overall, September serves as a brief interlude, hinting at the intensifying climatic pattern that will soon envelop the area.

September Precipitation Trends in Cooktown

The chart displays monthly precipitation patterns in Cooktown, 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.
JanFebMarAprMayJunJulAugSepOctNovDec37927030311862382717214943181
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Cooktown

In September, Cooktown, Australia experiences a slight dip in humidity, with levels averaging around 76%. This month follows the trend set during the winter months, where humidity peaked at 74% in July before gradually climbing to 77% in August. As one transitions into the warmer months, September serves as a gentle reminder of the tropical climate, striking a balance between cooler winter air and the rising humidity of spring. Overall, the subtle fluctuation in humidity levels throughout the year reflects the distinct seasonal shifts that define Cooktown's weather patterns.

September Average Humidity in Cooktown

This chart illustrates the average monthly humidity levels in Cooktown, 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.
JanFebMarAprMayJunJulAugSepOctNovDec80%81%82%82%81%80%75%78%76%76%77%77%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cooktown

In September, Cooktown, Australia, continues to experience extreme UV exposure with a UV Index of 14, necessitating a burn time of just 10 minutes for unprotected skin. This month marks a slight increase from the previous month’s Index of 12, indicating that the sun's intensity is on the rise as spring approaches. Notably, the trend shows that the peak months from January to March, consistently marked by a UV Index of 15 to 16, set the bar for extreme exposure throughout much of the year. As we transition into the warmer months, it's crucial to remain vigilant about sun protection. For more details on UV patterns, check out Cooktown UV Index.

Maximum UV Index Levels in Cooktown for September

The chart shows the monthly maximum UV Index (UVI) for Cooktown 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.
JanFebMarAprMayJunJulAugSepOctNovDec15161513108101214151516
Data source: Cooktown 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 Cooktown

September in Cooktown, Australia, shines brightly with an impressive 294 hours of sunlight, continuing the trend of increasing daylight as the year progresses. Following a vibrant August, which recorded 289 hours, September marks a steady ascent as the days grow longer, paving the way for even sunnier months ahead. This month serves as a delightful precursor to the peak of sunshine in October and November, where residents and visitors can bask in a total of 319 and 320 hours respectively. As the warmth of spring begins to embrace Cooktown, the increasing sunlight offers ample opportunities for outdoor adventures and exploration, making September a truly radiant time to visit this coastal gem.

Monthly Sunshine Duration in Cooktown: September Highlighted

The September sunshine duration represents the total number of hours Cooktown 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.
JanFebMarAprMayJunJulAugSepOctNovDec218h247h271h281h283h254h276h289h294h319h320h315h
Data source: Cooktown September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Cooktown During September

In Cooktown, Australia, September offers a promising shift towards sunnier days, displaying a 37% chance of sunshine. As winter recedes, the likelihood of clear skies begins to rise, following a gradual trend from the preceding months. After experiencing lower percentages in the earlier part of the year, such as 7% in January and 13% in February, the weather begins to brighten significantly by May, reaching 54%. This upward trajectory continues into October, which boasts the highest likelihood of sun at 55%. Consequently, September stands out as a transition month, marked by a moderate likelihood of sun that encourages outdoor adventures and leisurely activities.

Percentage of Sunny Days in September in Cooktown

The chart illustrates the percentage of sunny days in Cooktown 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 Cooktown experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec7%13%31%28%54%40%44%44%37%55%46%39%
Data source: Cooktown September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Cooktown in September

In September, daylight in Cooktown, Australia, remains consistent at 11 hours, marking the tail end of winter and a gradual transition into the warmer months. This duration is part of a broader trend observed from April to August, where daylight dips to 11 hours, providing a cozy ambiance that welcomes the change of seasons. As the year progresses into October, daylight begins to extend once more, hinting at the lively days of spring and summer ahead, where daylight will soon stretch back to 12 hours. This cyclical pattern underscores the predictability of daylight in Cooktown, creating a rhythmic balance within the seasonal landscape.

Average Daylight Hours in Cooktown for September

The chart illustrates the variation in daylight duration in Cooktown throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 55m12h 35m12h 9m11h 43m11h 22m11h 12m11h 17m11h 35m11h 59m12h 26m12h 49m13h
Data source: Cooktown daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Cooktown

As September rolls into Cooktown, Australia, the wind begins to pick up, reaching an average speed of 7.7 m/s (17 mph), making it the windiest month of the year. This noticeable increase follows a trend observed since May, where the winds have consistently gained strength. After a brief lull in the transitional months of January through April, the winds began their ascent, peaking in September before gently tapering off again in the subsequent months. This seasonal change not only brings a refreshing breeze but also sets the stage for outdoor activities, inviting adventurers and nature enthusiasts to embrace the invigorating atmosphere that characterizes this coastal gem.

Average September Wind Speed in Cooktown

The chart displays monthly wind speed patterns in Cooktown, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.23.35.05.67.35.85.77.27.7 m/s4.35.14.6
Data source: Cooktown September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Cooktown Compares to Other Months

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

In September, the weather is generally mild and pleasant, with average temperatures hovering around 24°C (75°F) and a maximum of 28°C (83°F). The month sees relatively low precipitation, totaling 21 mm (0.8 in) over about 5 days, making it a great time for outdoor activities. In contrast, January experiences significantly warmer temperatures, with an average of 27°C (81°F) and peaks reaching up to 35°C (95°F). However, this month is much wetter, receiving 379 mm (14.9 in) of rainfall over 22 days, leading to higher humidity levels at 80%. For a more detailed look at January's weather, you can visit Cooktown weather in January.

When comparing the weather of September and February, distinct differences emerge. September typically enjoys milder temperatures ranging from a minimum of 16°C (61°F) to a maximum of 28°C (83°F), with an average of 24°C (75°F). The month experiences relatively low precipitation at 21 mm (0.8 in) over about 5 days, accompanied by a humidity level of 76%. In contrast, February is significantly warmer, with temperatures soaring from a minimum of 23°C (74°F) to a scorching maximum of 36°C (97°F), averaging 27°C (82°F). However, February also sees much higher rainfall, totaling 270 mm (10.6 in) over approximately 20 days, alongside a slight increase in humidity at 81%. For a more detailed look at February weather, you can check out Cooktown weather in February.

In September, the weather is pleasantly mild, featuring an average temperature of 24°C (75°F) with a range that peaks at 28°C (83°F) and experiences minimal precipitation of 21 mm over just 5 days. The humidity levels are relatively moderate at 76%. In contrast, March showcases significantly warmer temperatures, with an average of 27°C (81°F) and highs reaching up to 34°C (94°F). However, this month also brings substantial rainfall, totaling 303 mm over 25 days, and slightly higher humidity at 82%. For more detailed insights, you can check out Cooktown weather in March.

When comparing the weather in September and April, notable differences emerge. September features milder temperatures, with a minimum of 16°C (61°F) and a maximum of 28°C (83°F), providing an average of 24°C (75°F). In contrast, April experiences warmer conditions, with a minimum of 22°C (71°F) and a maximum reaching up to 33°C (91°F), resulting in an average temperature of 26°C (79°F). The precipitation levels also vary significantly; September sees 21 mm (0.8 in) over just 5 days, while April is much wetter, receiving 118 mm (4.7 in) over 17 days. Humidity is slightly higher in April at 82% compared to September's 76%. For a more detailed look at April weather, you can visit Cooktown weather in April.

In comparing the weather between September and May, it's evident that both months experience similar average temperatures, hovering around 24°C (75°F). However, September tends to have slightly cooler minimum temperatures at 16°C (61°F), compared to May's minimum of 18°C (65°F). May also features a higher maximum temperature, reaching up to 29°C (85°F), while September caps at 28°C (83°F). Notably, May sees significantly more precipitation, with 62 mm (2.4 in) recorded across 16 rainy days, contrasted with September's 21 mm (0.8 in) over just 5 days. Additionally, humidity levels are higher in May at 81% compared to September's 76%. For a more detailed look at the weather patterns, you can visit Cooktown weather in May.

When comparing the weather in September and June, we notice a few key differences. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 28°C (83°F), with an average of 24°C (75°F), while June has slightly warmer minimum temperatures of 18°C (65°F) and a similar maximum of 28°C (83°F), averaging at 23°C (73°F). September experiences less precipitation, with only 21 mm (0.8 in) over 5 days, compared to June's 38 mm (1.5 in) over 13 days. Additionally, humidity is a bit lower in September at 76%, while June maintains a higher humidity level of 80%. For a more detailed look at June weather specifics, refer to Cooktown weather in June.

In comparing the weather of September to that of July, September typically offers slightly warmer temperatures, with an average of 24°C (75°F) compared to July’s 23°C (73°F). However, July starts out a bit cooler with a minimum of 18°C (64°F) versus September's 16°C (61°F). July also experiences more rainfall, with a total precipitation of 27 mm (1.1 in) over approximately 8 days, while September sees less rain at 21 mm (0.8 in) over just 5 days. Humidity levels are similar, with September slightly higher at 76% compared to July's 74%. For a more detailed look at July weather, you can check Cooktown weather in July.

In comparing the weather between September and August, we can see some notable differences. September features a slightly lower minimum temperature of 16°C (61°F) and an average temperature of 24°C (75°F), compared to August's minimum of 17°C (63°F) and average of 23°C (73°F). However, September's maximum temperature reaches 28°C (83°F), just shy of August's warmer high of 29°C (85°F). Precipitation is slightly higher in September at 21 mm (0.8 in), while both months experience rain for 5 days. Humidity levels are quite similar, with September at 76% and August at 77%. These conditions create a pleasant transition from the warmer summer days. For more details, you can check out Cooktown weather in August.

In comparing the weather between September and October, we see a notable shift in temperature and precipitation patterns. September features a milder range, with minimum temperatures of 16°C (61°F) and averages around 24°C (75°F), while October warms up, displaying a minimum of 20°C (68°F) and an average of 25°C (78°F). The maximum temperatures in October also rise to 31°C (88°F), contrasting with September's peak of 28°C (83°F). However, October experiences significantly higher precipitation at 49 mm (1.9 in) over 6 days compared to September's 21 mm (0.8 in) across 5 days. Both months maintain consistent humidity levels at 76%. For more detailed insights, you can check Cooktown weather in October.

In September, the weather features mild temperatures, ranging from a minimum of 16°C (61°F) to a maximum of 28°C (83°F), with an average of 24°C (75°F). This month sees relatively low precipitation, at 21 mm (0.8 in), occurring over five days, and the humidity is at a comfortable 76%.

Conversely, November experiences warmer temperatures, with a minimum of 21°C (71°F) and a maximum soaring to 36°C (98°F), giving it a higher average of 26°C (80°F). The month is wetter, with precipitation reaching 43 mm (1.7 in) across 11 days, and humidity slightly increases to 77%. For more detailed information on weather patterns, you can check Cooktown weather in November.

September and December weather in Cooktown show a noticeable shift in temperature and precipitation patterns. In September, the temperature ranges from a mild 16°C (61°F) to a comfortable maximum of 28°C (83°F), with an average of 24°C (75°F) and relatively low precipitation of 21 mm (0.8 in) over five days. In contrast, December experiences warmer temperatures, with a minimum of 24°C (75°F) and a maximum reaching up to 35°C (95°F). The average temperature in December is 27°C (82°F), but it sees significantly higher precipitation, totaling 180 mm (7.1 in) over 15 days and maintaining a humidity level of 77%. This shift indicates a transition from a relatively dry early spring to a wetter and hotter summer season. For more details, check out Cooktown weather in December.

Compare Cooktown's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Cooktown

As September unfolds in Cooktown, residents and visitors alike can expect a pleasant transition from the chill of winter to milder temperatures. With an average temperature that gracefully balances between warm days and cooler nights, this month typically sees less rainfall compared to the heavier precipitation of the preceding months. The air is characterized by a comfortable humidity level, providing a refreshing atmosphere for outdoor activities. Whether you’re soaking in the sights or exploring the vibrant wildlife, September’s weather in Cooktown is a delightful invitation to experience the natural beauty of this coastal gem. For a deeper understanding of what to expect throughout the year, check out the detailed insights on the region’s climate at Cooktown Climate.