Port Louis Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Port Louis. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s explore all the details to give you a full picture.

On average, Port Louis receives a reasonable amount of rainfall, with an annual precipitation of 939 mm.

Monthly Precipitation Levels

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

Significant seasonal changes in precipitation occur throughout the year. During the wet season, January receives substantial rainfall, averaging 189 mm of precipitation, recorded across 17 rainy days.

In contrast, the drier season, July brings less rainfall, with 28 mm over 15 rainy days.

January, the city’s wettest month, has a maximum daytime temperature of 29°C and receives 250 hours of sunshine. During the driest month July you can expect a temperature of 24°C. For more detailed insights into the city’s temperatures, visit our Port Louis Temperature page.

Annual Precipitation in Mauritius

The map below shows the annual precipitation across Mauritius. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Port Louis’s average annual precipitation is 939 mm. Let’s compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm, making it one of the drier Mediterranean climates with rainfall mostly in winter.

Osaka, Japan, experiences 1507 mm of rainfall annually, spread across the year with wetter summers.

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

• 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 Port Louis’s weather, including sunshine hours, humidity levels, and temperature data, visit our Port Louis Climate page.