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September Weather in Coleraine, Australia

Last updated: August 22, 2025

In September, the average temperature in Coleraine, Australia hovers around 10°C (50°F). Prepare for potential extremes, as temperatures can dip to a chilly -2°C (29°F) or climb to a warm 26°C (80°F). Expect about 66 mm (2.6 in) of precipitation spread over 12 days, coupled with an average humidity of 69%. Enjoy the month while staying prepared for weather fluctuations!

September Temperature in Coleraine

In September in Coleraine, the average temperature is 10°C (50°F). Maximums can reach 26°C (80°F) and minimums can be as low as -2°C (29°F). This makes it an ideal time for travelers to experience a mix of mild warmth and cool breezes, so be sure to pack accordingly!

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

The chart illustrates September temperature patterns in Coleraine, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Coleraine, September typically has an average temperature of 10°C (50°F), with highs reaching up to 26°C (80°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec676563575147464750545963
Data source: Temperature data for Coleraine 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 Coleraine

In Coleraine in September, the precipitation amount is 66 mm (2.6 in) over the course of 12 days.

September Precipitation Trends in Coleraine

The chart displays monthly precipitation patterns in Coleraine, 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. In Coleraine, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec272425407246727566636136
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Coleraine

In Coleraine in September, humidity is 69%. With an average temperature of 10°C (50°F), this humidity feels like a cool mist that clings to your skin, making outdoor activities invigorating yet slightly damp, so travelers should dress in layers to adjust to the refreshing air.

September Average Humidity in Coleraine

This chart illustrates the average monthly humidity levels in Coleraine, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Coleraine is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec45%49%57%67%75%79%80%75%69%59%56%50%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Coleraine

In Coleraine in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Coleraine.

Maximum UV Index Levels in Coleraine for September

The chart shows the monthly maximum UV Index (UVI) for Coleraine 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. In September, the maximum UV index in Coleraine typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14121174335791214
Data source: Coleraine 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.

How September Weather in Coleraine Compares to Other Months

Weather in Coleraine varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Coleraine, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Coleraine, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)27 mm (1.1 inches)45%extreme
February Weather18°C (65°F)24 mm (1.0 inches)49%extreme
March Weather17°C (63°F)25 mm (1.0 inches)57%extreme
April Weather14°C (58°F)40 mm (1.6 inches)67%high
May Weather11°C (51°F)72 mm (2.8 inches)75%moderate
June Weather8°C (47°F)46 mm (1.8 inches)79%moderate
July Weather8°C (47°F)72 mm (2.8 inches)80%moderate
August Weather8°C (47°F)75 mm (2.9 inches)75%moderate
September Weather10°C (50°F)66 mm (2.6 inches)69%high
October Weather12°C (54°F)63 mm (2.5 inches)59%very high
November Weather15°C (59°F)61 mm (2.4 inches)56%extreme
December Weather17°C (63°F)36 mm (1.4 inches)50%extreme

Compare Coleraine's Climate with Cities Worldwide