Castel Gandolfo Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Castel Gandolfo. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Castel Gandolfo is known for its substantial rainfall, with annual precipitation reaching 1015 mm.

Monthly Precipitation Levels

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

The seasons in Castel Gandolfo, bring significant changes in precipitation. The wettest month, November, receives high rainfall, with an average of 153 mm of precipitation.

This rainfall is distributed across 15 rainy days. In contrast, the driest month, July, experiences much less rainfall, totaling 27 mm over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

November, the wettest month, has a maximum daytime temperature of 17°C. The city receives 129 hours of sunshine in this period. During the driest month July you can expect a temperature of 30°C. For more detailed insights into the city’s temperatures, visit our Castel Gandolfo 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

Castel Gandolfo’s average annual precipitation is 1015 mm. Let’s compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 620 mm, evenly distributed across the year with no extreme wet or dry seasons.

Osaka, Japan, experiences 1507 mm of rainfall annually, spread across the year with wetter summers.

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

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.

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 Castel Gandolfo’s weather, including sunshine hours, humidity levels, and temperature data, visit our Castel Gandolfo Climate page.