nomadseason

September Weather in Riverton, Australia

Last updated: August 22, 2025

The average temperature in Riverton, Australia during September hovers around 12°C (54°F). Expect a range where the minimum can dip to 1°C (34°F) and the maximum can rise to 29°C (85°F). There's also an anticipated precipitation amount of 33 mm (1.3 in) spread over about 7 days, with an average humidity of 65%.

September Temperature in Riverton

In September in Riverton, the average temperature is 12°C (54°F), with maximums reaching 29°C (85°F) and minimums dipping as low as 1°C (34°F). This diverse weather makes Riverton an ideal destination for travelers seeking both warmth and the chance to enjoy cooler temperatures.

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

The chart illustrates September temperature patterns in Riverton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverton, September typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (85°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec737068635550505054606570
Data source: Temperature data for Riverton 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 Riverton

In Riverton in September, the precipitation amount is 33 mm (1.3 in) over a period of 7 days.

September Precipitation Trends in Riverton

The chart displays monthly precipitation patterns in Riverton, 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 Riverton, September typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec142010243135415433343515
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Riverton

In Riverton in September, humidity is 65%. With an average temperature of 12°C (54°F), this humidity feels like a cool, damp embrace that can make outdoor activities a bit uncomfortable, but offers a refreshing atmosphere for exploring cozy cafes and indoor attractions.

September Average Humidity in Riverton

This chart illustrates the average monthly humidity levels in Riverton, 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 Riverton is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec41%46%55%66%73%76%76%70%65%51%50%46%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Riverton

In Riverton in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Riverton.

Maximum UV Index Levels in Riverton for September

The chart shows the monthly maximum UV Index (UVI) for Riverton 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 Riverton typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141412853458101315
Data source: Riverton 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 Riverton Compares to Other Months

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

This table compares monthly weather conditions in Riverton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)14 mm (0.6 inches)41%extreme
February Weather21°C (70°F)20 mm (0.8 inches)46%extreme
March Weather20°C (68°F)9 mm (0.4 inches)55%extreme
April Weather17°C (63°F)24 mm (1.0 inches)66%very high
May Weather13°C (55°F)31 mm (1.2 inches)73%moderate
June Weather10°C (50°F)35 mm (1.4 inches)76%moderate
July Weather10°C (50°F)41 mm (1.6 inches)76%moderate
August Weather10°C (50°F)54 mm (2.1 inches)70%moderate
September Weather12°C (54°F)33 mm (1.3 inches)65%very high
October Weather15°C (60°F)34 mm (1.3 inches)51%very high
November Weather18°C (65°F)35 mm (1.4 inches)50%extreme
December Weather21°C (70°F)15 mm (0.6 inches)46%extreme

Compare Riverton's Climate with Cities Worldwide