Foz do Arelho Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Foz do Arelho, Centro Region, Portugal. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Let's now guide you through the details for a complete overview.
Generally, Foz do Arelho experiences moderate precipitation patterns, averaging 660 mm (26 in) yearly. However, this average masks significant seasonal variation, including a distinct dry season during certain months that are clearly visible in our monthly breakdown below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, November receives substantial rainfall, averaging 94 mm (3.7 in) of precipitation, recorded across 14 rainy days.
In contrast, the driest month, July brings less rainfall, with 8.8 mm (0.3 in) over 3 rainy days.
November, the wettest month, has a maximum daytime temperature of 18°C (64°F). The city receives 138 hours of sunshine in this period. During the driest month July you can expect a temperature of 24°C (75°F). For more detailed insights into the city's temperatures, visit our Foz do Arelho Temperature page.
Annual Rainfall in Portugal: City Comparison
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.
heavy rainfall
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moderate
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Foz do Arelho vs World: Rainfall Compared
Foz do Arelho's average annual precipitation is 660 mm (26 in). Let's compare this to some popular worldwide tourist destinations:
In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.
Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.
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 Foz do Arelho's weather, including sunshine hours, humidity levels, and temperature data, visit our Foz do Arelho Climate page.
