May Weather in Joondalup, Australia

Last updated: August 22, 2025

In May, the average temperature in Joondalup, Australia is a comfortable 17°C (63°F), with minima dipping to 7°C (45°F) and peaks reaching up to 29°C (85°F). Expect about 54 mm (2.1 in) of precipitation spread over 7 days, while the average humidity hovers around a moderate 69%.

May Temperature in Joondalup

In May in Joondalup, the average temperature is 17°C (63°F). Maximums can reach 29°C (85°F) and minimums can be as low as 7°C (45°F). This variation makes it an ideal time for travelers to enjoy a range of outdoor activities while being prepared for cooler evenings.

May Weather in Joondalup: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Joondalup, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joondalup, May typically has an average temperature of 17°C (63°F), with highs reaching up to 29°C (85°F) and lows dropping to around 7°C (45°F).

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

May Precipitation in Joondalup

In Joondalup in May, the precipitation amount is 54 mm (2.1 in) over a duration of 7 days.

May Precipitation Trends in Joondalup

The chart displays monthly precipitation patterns in Joondalup, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Joondalup, May typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Joondalup

In Joondalup in May, humidity is 69%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities feel slightly heavier, yet still comfortable for exploring.

May Average Humidity in Joondalup

This chart illustrates the average monthly humidity levels in Joondalup, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Joondalup is approximately 69%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Joondalup

In Joondalup in May, 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 Joondalup, you can refer to this Hourly UV Index in Joondalup.

Maximum UV Index Levels in Joondalup for May

The chart shows the monthly maximum UV Index (UVI) for Joondalup in May, 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 May, the maximum UV index in Joondalup typically reaches 6, which falls under the high exposure category.

Data source: Joondalup May 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 May Weather in Joondalup Compares to Other Months

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

This table compares monthly weather conditions in Joondalup, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	29 mm (1.2 inches)	40%	extreme
February Weather	24°C (75°F)	58 mm (2.3 inches)	44%	extreme
March Weather	23°C (73°F)	20 mm (0.8 inches)	50%	extreme
April Weather	20°C (68°F)	21 mm (0.8 inches)	65%	very high
May Weather	17°C (63°F)	54 mm (2.1 inches)	69%	high
June Weather	15°C (59°F)	100 mm (3.9 inches)	75%	moderate
July Weather	14°C (58°F)	111 mm (4.4 inches)	74%	moderate
August Weather	14°C (58°F)	102 mm (4.0 inches)	70%	high
September Weather	15°C (60°F)	39 mm (1.5 inches)	61%	very high
October Weather	17°C (63°F)	39 mm (1.5 inches)	50%	extreme
November Weather	20°C (68°F)	24 mm (0.9 inches)	45%	extreme
December Weather	23°C (73°F)	9 mm (0.3 inches)	40%	extreme