Cilaos Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Cilaos, Reunion. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's break down all the details for a clearer picture.
Cilaos is known for its substantial rainfall, with annual precipitation reaching 1505 mm (59 in). While the overall climate is wet, there are notable seasonal patterns that create interesting contrasts, as demonstrated in our graph below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The climate in Cilaos shows significant variation throughout the year. Expect 284 mm (11 in) of precipitation during the wettest month February, distributed over 21 rainy days.
In contrast, August offers drier and sunnier days, with around 52 mm (2 in) of rainfall over 17 rainy days.
February, the wettest month, has a maximum daytime temperature of 27°C (81°F). During the driest month August you can expect a temperature of 22°C (72°F). For more detailed insights into the city's temperatures, visit our Cilaos Temperature page.
Annual Rainfall in Reunion: City Comparison
The map below shows the annual precipitation across Reunion. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Cilaos vs World: Rainfall Compared
Cilaos's average annual precipitation is 1505 mm (59 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.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
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.
- 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 Cilaos's weather, including sunshine hours, humidity levels, and temperature data, visit our Cilaos Climate page.
