Hillarys Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Hillarys, Western Australia, Australia. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Now, let's break down all the details for a clearer picture.

Generally, Hillarys has a moderate amount of precipitation, averaging 591 mm (23 in) of rainfall annually. However, it does experience a distinct dry season during certain months. Take a look at our detailed charts below to see the seasonal variation.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Hillarys can be quite wet during July, receiving approximately 108 mm (4.3 in) of precipitation over 15 rainy days.

In contrast December, experiences much drier conditions, with 11 mm (0.4 in) of rainfall, spread across 4 rainy days.

July, the wettest month, has a maximum daytime temperature of 19°C (66°F). The city receives 191 hours of sunshine in this period. During the driest month December you can expect a temperature of 28°C (82°F). For more detailed insights into the city's temperatures, visit our Hillarys Temperature page.

Hillarys's average annual precipitation is 591 mm (23 in). Let's compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages 964 mm (38 in), with snowy winters and rainy summers.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Hillarys's weather, including sunshine hours, humidity levels, and temperature data, visit our Hillarys Climate page.