Portsea Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Portsea, Victoria, Australia. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's break down all the details for a clearer picture.
Generally, Portsea has a moderate amount of precipitation, averaging 737 mm (29 in) of rainfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 75 mm (3 in) of precipitation, spread over 11 rainy days.
In contrast, March experiences a drier climate, with about 45 mm (1.8 in) of rainfall spread across 10 rainy days.
June, the wettest month, has a maximum daytime temperature of 15°C (59°F). The city receives 123 hours of sunshine in this period. During the driest month March you can expect a temperature of 21°C (70°F). For more detailed insights into the city's temperatures, visit our Portsea Temperature page.
Annual Rainfall in Australia: City Comparison
The map below shows the annual precipitation across Australia. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Portsea vs World: Rainfall Compared
Portsea's average annual precipitation is 737 mm (29 in). Let's compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.
Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.
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 Portsea:
- 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 Portsea's weather, including sunshine hours, humidity levels, and temperature data, visit our Portsea Climate page.
