Ribeira Grande Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Ribeira Grande, Azores, Portugal. Long-term data from 1990 to 2020 was used to calculate these averages. Now, let's explore all the details to give you a full picture.
Generally, Ribeira Grande has a moderate amount of precipitation, averaging 960 mm (38 in) of rainfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The climate in Ribeira Grande shows significant variation throughout the year. Expect 138 mm (5.4 in) of precipitation during the wettest month December, distributed over 20 rainy days.
In contrast, July offers drier and sunnier days, with around 30 mm (1.2 in) of rainfall over 12 rainy days.
December, the wettest month, has a maximum daytime temperature of 18°C (64°F). The city receives 94 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 Ribeira Grande 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
low
almost none
Ribeira Grande vs World: Rainfall Compared
Ribeira Grande's average annual precipitation is 960 mm (38 in). Let's compare this to some popular worldwide tourist destinations:
Boston, USA, experiences 1238 mm (49 in) of annual precipitation, including significant snowfall during the winter.
Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
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.
Climate change is affecting precipitation patterns worldwide, including Ribeira Grande:
- 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.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Ribeira Grande's weather, including sunshine hours, humidity levels, and temperature data, visit our Ribeira Grande Climate page.
