Trieste Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Trieste. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Trieste has a notably wet climate with abundant precipitation, recording 1494 mm of rain/snowfall per year.

Monthly Precipitation Levels

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

The climate in Trieste shows significant variation throughout the year. Expect 188 mm of precipitation during the wettest month November, distributed over 13 rainy days.

In contrast, July offers drier and sunnier days, with around 83 mm of rainfall over 12 rainy days.

November, the city’s wettest month, has a maximum daytime temperature of 13°C and receives 98 hours of sunshine. During the driest month July you can expect a temperature of 28°C. For more detailed insights into the city’s temperatures, visit our Trieste Temperature page.

Annual Precipitation in Italy

The map below shows the annual precipitation across Italy. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Trieste’s average annual precipitation is 1494 mm. Let’s compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm, evenly distributed across the year with no extreme wet or dry seasons.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm of annual rainfall, mostly in the summer.

In Brisbane, Australia, the annual precipitation is 979 mm, making it wetter than Sydney.

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

How is Precipitation Measured?

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.

Sea vs. Land Precipitation

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

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