Saint Georges Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows both the average monthly rainfall and the number of rainy days in Saint Georges, French Guiana. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let’s break down all the details for a clearer picture.

Saint Georges experiences significant rainfall throughout the year, averaging 2458 mm of precipitation annually.

Monthly Precipitation Levels

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

The climate in Saint Georges shows significant variation throughout the year. Expect 377 mm of precipitation during the wettest month May, distributed over 26 rainy days.

In contrast, September offers drier and sunnier days, with around 42 mm of rainfall over 6 rainy days.

May, the wettest month, has a maximum daytime temperature of 30°C. The city receives 111 hours of sunshine in this period. During the driest month September you can expect a temperature of 33°C. For more detailed insights into the city’s temperatures, visit our Saint Georges 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

Saint Georges’s average annual precipitation is 2458 mm. Let’s compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm, characterized by wet winters and dry summers typical of the Mediterranean climate.

Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.

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

Ho Chi Minh City, Vietnam, receives 1955 mm of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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 Saint Georges’s weather, including sunshine hours, humidity levels, and temperature data, visit our Saint Georges Climate page.