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September Weather in Dover, Australia

Last updated: August 22, 2025

In September, the average temperature in Dover, Australia is a mild 9°C (49°F), with a minimum that can dip to 2°C (37°F) and soaring to a pleasant maximum of 21°C (70°F). Expect 78 mm (3.1 in) of precipitation spread over about 16 days, contributing to an average humidity level of 82%. Stay prepared and enjoy the cozy atmosphere!

September Temperature in Dover

In September in Dover, the average temperature is 9°C (49°F), with maximums reaching 21°C (70°F) and minimums dropping to as low as 2°C (37°F). This mild climate makes Dover a great destination for travelers looking to explore comfortably during this time of year.

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

The chart illustrates September temperature patterns in Dover, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dover, September typically has an average temperature of 9°C (49°F), with highs reaching up to 21°C (70°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec605858545148474749525557
Data source: Temperature data for Dover 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 Dover

In Dover in September, the precipitation amount is 78 mm (3.1 in) over the course of 16 days.

September Precipitation Trends in Dover

The chart displays monthly precipitation patterns in Dover, 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 Dover, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec456381717671729678948979
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Dover

In Dover in September, humidity is 82%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and prompting travelers to seek warmth indoors or in cozy cafes.

September Average Humidity in Dover

This chart illustrates the average monthly humidity levels in Dover, 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 Dover is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%68%73%81%86%85%86%84%82%77%77%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dover

In Dover in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Dover, you can refer to this Hourly UV Index in Dover.

Maximum UV Index Levels in Dover for September

The chart shows the monthly maximum UV Index (UVI) for Dover 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 Dover typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1211963224681013
Data source: Dover 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 Dover Compares to Other Months

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

This table compares monthly weather conditions in Dover, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)45 mm (1.8 inches)68%extreme
February Weather15°C (59°F)63 mm (2.5 inches)68%extreme
March Weather14°C (58°F)81 mm (3.2 inches)73%very high
April Weather12°C (55°F)71 mm (2.8 inches)81%high
May Weather11°C (51°F)76 mm (3.0 inches)86%moderate
June Weather9°C (49°F)71 mm (2.8 inches)85%low
July Weather8°C (47°F)72 mm (2.8 inches)86%low
August Weather8°C (47°F)96 mm (3.8 inches)84%moderate
September Weather9°C (49°F)78 mm (3.1 inches)82%high
October Weather11°C (52°F)94 mm (3.7 inches)77%very high
November Weather13°C (55°F)89 mm (3.5 inches)77%very high
December Weather14°C (57°F)79 mm (3.1 inches)70%extreme

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