Méro Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Méro, Dominica. 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.
Méro has a relatively rainy climate with high precipitation levels, averaging 1001 mm (39 in) of rainfall annually. Despite the high annual total, it does experience a distinct dry season during certain months. Examine our detailed charts below to understand these seasonal patterns.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The climate in Méro shows significant variation throughout the year. Expect 141 mm (5.6 in) of precipitation during the wettest month October, distributed over 19 rainy days.
In contrast, March offers drier and sunnier days, with around 35 mm (1.4 in) of rainfall over 15 rainy days.
October, the wettest month, has a maximum daytime temperature of 29°C (84°F). The city receives 220 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 Méro Temperature page.
Explore Méro's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Méro spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Dominica: City Comparison
The map below shows the annual precipitation across Dominica. You can also select the different months in case you are interested in a specific month.
heavy rainfall
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Méro vs World: Rainfall Compared
Méro's average annual precipitation is 1001 mm (39 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.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
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 Méro:
- 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 Méro's weather, including sunshine hours, humidity levels, and temperature data, visit our Méro Climate page.
