Vieques Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Vieques, Puerto Rico. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Vieques has a notably wet climate with abundant precipitation, recording 1276 mm (50 in) of rainfall per year.

Monthly Precipitation Levels

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

Vieques can be quite wet during September, receiving approximately 176 mm (6.9 in) of precipitation over 18 rainy days.

In contrast March, experiences much drier conditions, with 46 mm (1.8 in) of rainfall, spread across 15 rainy days.

September, the wettest month, has a maximum daytime temperature of 30°C (86°F). The city receives 236 hours of sunshine in this period. During the driest month March you can expect a temperature of 27°C (81°F). For more detailed insights into the city's temperatures, visit our Vieques Temperature page.

Vieques's average annual precipitation is 1276 mm (50 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.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

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.

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.

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