Petite Île Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Petite Île, Reunion. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's now guide you through the details for a complete overview.

Petite Île has a relatively rainy climate with high precipitation levels, averaging 1481 mm (58 in) of rainfall annually. Despite the high annual total, it does experience a distinct rainy 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 seasons in Petite Île, bring significant changes in precipitation. The wettest month, February, receives heavy rainfall, with an average of 259 mm (10 in) of precipitation. This rainfall is distributed across 20 rainy days.

In contrast, the driest month, September, experiences much less rainfall, totaling 57 mm (2.2 in) over 13 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

February, the wettest month, has a maximum daytime temperature of 27°C (81°F). During the driest month September you can expect a temperature of 22°C (72°F). For more detailed insights into the city's temperatures, visit our Petite Île 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.

Petite Île vs World: Rainfall Compared

Petite Île's average annual precipitation is 1481 mm (58 in). Let's compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages 964 mm (38 in), with snowy winters and rainy summers.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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.

Precipitation has a very strong role in determining the local climate and ecosystem:

• 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.

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

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