Grande Riviere Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Grande Riviere, Trinidad, Trinidad & Tobago. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.

Grande Riviere experiences significant rainfall throughout the year, averaging 1566 mm (62 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.

Monthly Precipitation Levels

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

Grande Riviere can be quite wet during November, receiving approximately 196 mm (7.7 in) of precipitation over 25 rainy days.

In contrast March, experiences much drier conditions, with 49 mm (1.9 in) of rainfall, spread across 10 rainy days.

November, the wettest month, has a maximum daytime temperature of 29°C (84°F). The city receives 196 hours of sunshine in this period. During the driest month March you can expect a temperature of 28°C (82°F). For more detailed insights into the city's temperatures, visit our Grande Riviere Temperature page.

Annual Rainfall in Trinidad & Tobago: City Comparison

The map below shows the annual precipitation across Trinidad & Tobago. You can also select the different months in case you are interested in a specific month.

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Legend heavy rainfall high moderate low almost none

Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Grande Riviere vs World: Rainfall Compared

Grande Riviere's average annual precipitation is 1566 mm (62 in). Let's compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

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.

Climate change is affecting precipitation patterns worldwide, including Grande Riviere:

• 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.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.

For more detailed information about Grande Riviere's weather, including sunshine hours, humidity levels, and temperature data, visit our Grande Riviere Climate page.