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

This page shows the average amount of rainfall per month in Cascais. The numbers are calculated over a 30-year period to provide a reliable average. Let’s explore the details in depth to provide you with a complete overview.

Generally, Cascais has a moderate amount of precipitation, averaging 624 mm of rainfall annually.

Monthly Precipitation Levels

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

The climate in Cascais shows significant variation throughout the year. Expect 95 mm of precipitation during the wettest month November, distributed over 13 rainy days.

In contrast, July offers drier and sunnier days, with around 3.1 mm of rainfall over 2 rainy days.

November, the wettest month, has a maximum daytime temperature of 18°C. The city receives 186 hours of sunshine in this period. During the driest month July you can expect a temperature of 22°C. For more detailed insights into the city’s temperatures, visit our Cascais Temperature page.

Annual Precipitation in Portugal

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

Amsterdam Precipitation Compared World Wide

Cascais’s average annual precipitation is 624 mm. Let’s compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm of rainfall annually, with precipitation evenly distributed throughout the year.

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.

How Does Precipitation Affect Local Climate?

Precipitation has a very strong role in determining the local climate and ecosystem:

• Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
• Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

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