Wollongong Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Wollongong, New South Wales, Australia. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Wollongong has a notably wet climate with abundant precipitation, recording 1028 mm (40 in) of rainfall per year.

Monthly Precipitation Levels

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

The climate in Wollongong shows significant variation throughout the year. Expect 134 mm (5.3 in) of precipitation during the wettest month February, distributed over 12 rainy days.

In contrast, July offers drier and sunnier days, with around 55 mm (2.2 in) of rainfall over 8 rainy days.

February, the wettest month, has a maximum daytime temperature of 25°C (77°F). During the driest month July you can expect a temperature of 17°C (63°F). For more detailed insights into the city's temperatures, visit our Wollongong Temperature page.

Wollongong's average annual precipitation is 1028 mm (40 in). Let's compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

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.

Climate change is affecting precipitation patterns worldwide, including Wollongong:

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

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