Alcalá de Henares Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Alcalá de Henares, Community of Madrid, Spain. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's now guide you through the details for a complete overview.

Alcalá de Henares maintains relatively dry conditions year-round, with an average annual precipitation of 493 mm (19 in). However, it does have a distinct dry season during certain months, creating distinct seasonal patterns visible in our monthly breakdown below.

Monthly Precipitation Levels

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

Alcalá de Henares can be quite wet during October, receiving approximately 67 mm (2.6 in) of precipitation over 10 rainy days.

In contrast July, experiences much drier conditions, with 7.8 mm (0.3 in) of rainfall, spread across 5 rainy days.

October, the wettest month, has a maximum daytime temperature of 21°C (70°F). The city receives 204 hours of sunshine in this period. During the driest month July you can expect a temperature of 34°C (93°F). For more detailed insights into the city's temperatures, visit our Alcalá de Henares Temperature page.

Alcalá de Henares's average annual precipitation is 493 mm (19 in). Let's compare this to some popular worldwide tourist destinations:

The city of Rome, Italy, has an average annual precipitation of 832 mm (33 in), spread fairly evenly throughout the year.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

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

Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.

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 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.

• 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 Alcalá de Henares's weather, including sunshine hours, humidity levels, and temperature data, visit our Alcalá de Henares Climate page.