São Bartolomeu da Serra Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in São Bartolomeu da Serra, Alentejo, Portugal. 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.
Generally, São Bartolomeu da Serra experiences moderate precipitation patterns, averaging 552 mm (22 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))
The climate in São Bartolomeu da Serra shows significant variation throughout the year. Expect 76 mm (3 in) of precipitation during the wettest month November, distributed over 11 rainy days.
In contrast, July offers drier and sunnier days, with around 2.4 mm (0.1 in) of rainfall over a single rainy day.
November, the wettest month, has a maximum daytime temperature of 19°C (66°F). The city receives 175 hours of sunshine in this period. During the driest month July you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our São Bartolomeu da Serra 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
high
moderate
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São Bartolomeu da Serra vs World: Rainfall Compared
São Bartolomeu da Serra's average annual precipitation is 552 mm (22 in). Let's compare this to some popular worldwide tourist destinations:
Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.
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.
Precipitation has a very strong role in determining the local climate and ecosystem:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- 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 São Bartolomeu da Serra's weather, including sunshine hours, humidity levels, and temperature data, visit our São Bartolomeu da Serra Climate page.
