September Weather in Monash, Australia

Last updated: August 22, 2025

In September, the average temperature in Monash, Australia is a comfortable 14°C (58°F). However, prepare for a temperature range that can dip to a chilly 3°C (37°F) and soar up to a warm 34°C (93°F). Expect 14 mm (0.6 in) of precipitation over approximately 3 days, and enjoy an average humidity level of 61%.

September Temperature in Monash

In September in Monash, the average temperature is 14°C (58°F), with maximums soaring up to 34°C (93°F) and minimums dropping as low as 3°C (37°F). This range makes it important for travelers to pack layers to accommodate the fluctuating temperatures.

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

The chart illustrates September temperature patterns in Monash, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monash, September typically has an average temperature of 14°C (58°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (37°F).

Data source: Temperature data for Monash generated using information from the Copernicus Climate Change Service.

September Precipitation in Monash

In Monash in September, the precipitation amount is 14 mm (0.6 in) accumulated over the course of 3 days.

September Precipitation Trends in Monash

The chart displays monthly precipitation patterns in Monash, 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 Monash, September typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 3 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Monash

In Monash in September humidity is 61%. With an average temperature of 14°C (58°F), this humidity feels like a refreshing embrace, making for comfortable travel conditions that invite exploration while ensuring you stay hydrated and refreshed.

September Average Humidity in Monash

This chart illustrates the average monthly humidity levels in Monash, 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 Monash is approximately 61%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Monash

In Monash 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 Monash.

Maximum UV Index Levels in Monash for September

The chart shows the monthly maximum UV Index (UVI) for Monash 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 Monash typically reaches 8, which falls under the very high exposure category.

Data source: Monash 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 Monash Compares to Other Months

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

This table compares monthly weather conditions in Monash, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (78°F)	17 mm (0.7 inches)	33%	extreme
February Weather	23°C (74°F)	18 mm (0.7 inches)	39%	extreme
March Weather	22°C (72°F)	4 mm (0.2 inches)	51%	extreme
April Weather	18°C (65°F)	17 mm (0.7 inches)	61%	very high
May Weather	13°C (56°F)	16 mm (0.6 inches)	70%	moderate
June Weather	10°C (51°F)	15 mm (0.6 inches)	73%	moderate
July Weather	11°C (52°F)	14 mm (0.6 inches)	74%	moderate
August Weather	11°C (53°F)	21 mm (0.8 inches)	68%	moderate
September Weather	14°C (58°F)	14 mm (0.6 inches)	61%	very high
October Weather	18°C (64°F)	21 mm (0.8 inches)	47%	extreme
November Weather	21°C (69°F)	23 mm (0.9 inches)	43%	extreme
December Weather	23°C (74°F)	15 mm (0.6 inches)	38%	extreme