April Weather in Castle Hill, Australia

Last updated: August 22, 2025

In April, the average temperature in Castle Hill, Australia is a delightful 25°C (78°F). Expect a range where the minimum dips to 13°C (56°F) and the maximum can soar to 35°C (95°F). Be prepared for some wet days, as the region sees approximately 64 mm (2.5 in) of precipitation over 9 days. Additionally, the atmosphere is quite humid, with an average humidity level of 76%. Enjoy your time in this vibrant locale!

April Temperature in Castle Hill

In April in Castle Hill, the average temperature is 25°C (78°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 13°C (56°F). This pleasant climate makes Castle Hill an ideal destination for travelers seeking both warmth and the chance to enjoy comfortable evenings.

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

The chart illustrates April 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, April typically has an average temperature of 25°C (78°F), with highs reaching up to 35°C (95°F) and lows dropping to around 13°C (56°F).

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

April Precipitation in Castle Hill

In Castle Hill in April, the precipitation amount is 64 mm (2.5 in) over a span of 9 days.

April Precipitation Trends in Castle Hill

The chart displays monthly precipitation patterns in Castle Hill, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Castle Hill, April typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Castle Hill

In Castle Hill in April humidity is 76%. With an average temperature of 25°C (78°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick, causing travelers to seek shade and refreshment more often.

April Average Humidity in Castle Hill

This chart illustrates the average monthly humidity levels in Castle Hill, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Castle Hill is approximately 76%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Castle Hill

In Castle Hill in April, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Castle Hill.

Maximum UV Index Levels in Castle Hill for April

The chart shows the monthly maximum UV Index (UVI) for Castle Hill in April, 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 April, the maximum UV index in Castle Hill typically reaches 12, which falls under the extreme exposure category.

Data source: Castle Hill April 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 April 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 April’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 April’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