Castelo Branco Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Castelo Branco, Azores, Portugal. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's explore all the details to give you a full picture.

Generally, Castelo Branco has a moderate amount of precipitation, averaging 908 mm (36 in) of rainfall annually. However, it does experience a distinct dry season during certain months. Take a look at our detailed charts below to see the seasonal variation.

Monthly Precipitation Levels

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

The climate in Castelo Branco shows significant variation throughout the year. Expect 124 mm (4.9 in) of precipitation during the wettest month December, distributed over 18 rainy days.

In contrast, July offers drier and sunnier days, with around 31 mm (1.2 in) of rainfall over 11 rainy days.

December, the wettest month, has a maximum daytime temperature of 19°C (66°F). During the driest month July you can expect a temperature of 23°C (73°F). For more detailed insights into the city's temperatures, visit our Castelo Branco Temperature page.

Castelo Branco's average annual precipitation is 908 mm (36 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.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

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.

• 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 Castelo Branco's weather, including sunshine hours, humidity levels, and temperature data, visit our Castelo Branco Climate page.