Matoury Rainfall & Precipitation: Monthly Averages and Year-Round Insights
This page shows both the average monthly rainfall and the number of rainy days in Matoury, French Guiana. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Now, let’s break down all the details for a clearer picture.
Matoury experiences significant rainfall throughout the year, averaging 2662 mm of precipitation annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm)
The climate in Matoury shows significant variation throughout the year. Expect 409 mm of precipitation during the wettest month May, distributed over 26 rainy days.
In contrast, September offers drier and sunnier days, with around 62 mm of rainfall over 4 rainy days.May, the wettest month, has a maximum daytime temperature of 30°C. The city receives 122 hours of sunshine in this period. During the driest month September you can expect a temperature of 32°C. For more detailed insights into the city’s temperatures, visit our Matoury Temperature page.
Annual Precipitation in French Guiana
The map below shows the annual precipitation across French Guiana. You can also select the different months in case you are interested in a specific month.





Amsterdam Precipitation Compared World Wide
Matoury’s average annual precipitation is 2662 mm. Let’s compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm, with rain and snow contributing to its humid climate.
Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.
Perth, Australia, receives 565 mm of rainfall annually, mostly during the winter months.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.
How is Precipitation Measured?
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.
Interesting weather facts
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm 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 Matoury’s weather, including sunshine hours, humidity levels, and temperature data, visit our Matoury Climate page.