October Weather in Castle Hill, Australia

Last updated: August 22, 2025

In October, the average temperature in Castle Hill, Australia is a pleasant 25°C (77°F). Expect a comfortable range, with minimums dipping to 16°C (62°F) and maximums reaching up to 34°C (94°F). During this month, you can anticipate 30 mm (1.2 in) of precipitation spread over about 5 days, while the average humidity settles around 62%.

October Temperature in Castle Hill

In October in Castle Hill, the average temperature is 25°C (77°F), with maximums reaching 34°C (94°F) and minimums dropping to as low as 16°C (62°F). This range makes it a pleasant destination for travelers seeking comfortable weather.

October Weather in Castle Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Castle Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castle Hill, October typically has an average temperature of 25°C (77°F), with highs reaching up to 34°C (94°F) and lows dropping to around 16°C (62°F).

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

October Precipitation in Castle Hill

In Castle Hill in October, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.

October Precipitation Trends in Castle Hill

The chart displays monthly precipitation patterns in Castle Hill, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Castle Hill, October typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Castle Hill

In Castle Hill in October humidity is 62%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making travel enjoyable yet slightly sticky, so staying hydrated and taking breaks in the shade is essential for a comfortable experience.

October Average Humidity in Castle Hill

This chart illustrates the average monthly humidity levels in Castle Hill, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Castle Hill is approximately 62%, offering insight into how humid the weather typically is during this month.

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

October UV Index in Castle Hill

In Castle Hill in October, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Castle Hill, you can check here.

Maximum UV Index Levels in Castle Hill for October

The chart shows the monthly maximum UV Index (UVI) for Castle Hill in October, 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 October, the maximum UV index in Castle Hill typically reaches 14, which falls under the extreme exposure category.

Data source: Castle Hill October 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 October Weather in Castle Hill Compares to Other Months

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

This table compares monthly weather conditions in Castle Hill, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (82°F)	290 mm (11.4 inches)	76%	extreme
February Weather	28°C (82°F)	299 mm (11.8 inches)	78%	extreme
March Weather	27°C (81°F)	228 mm (9.0 inches)	81%	extreme
April Weather	25°C (78°F)	64 mm (2.5 inches)	76%	extreme
May Weather	22°C (73°F)	53 mm (2.1 inches)	72%	very high
June Weather	20°C (68°F)	21 mm (0.8 inches)	71%	high
July Weather	20°C (68°F)	16 mm (0.6 inches)	63%	very high
August Weather	21°C (70°F)	12 mm (0.5 inches)	67%	extreme
September Weather	22°C (73°F)	12 mm (0.5 inches)	61%	extreme
October Weather	25°C (77°F)	30 mm (1.2 inches)	62%	extreme
November Weather	26°C (80°F)	42 mm (1.7 inches)	63%	extreme
December Weather	28°C (82°F)	127 mm (5.0 inches)	69%	extreme