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

This page shows the average amount of rainfall per month in Port-au-Prince. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Port-au-Prince has a relatively rainy climate with high precipitation levels, averaging 1431 mm of rainfall annually.

Monthly Precipitation Levels

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

The climate in Port-au-Prince shows significant variation throughout the year. Expect 214 mm of precipitation during the wettest month May, distributed over 12 rainy days.

In contrast, January offers drier and sunnier days, with around 25 mm of rainfall over 11 rainy days.

May, the wettest month, has a maximum daytime temperature of 29°C. The city receives 251 hours of sunshine in this period. During the driest month January you can expect a temperature of 28°C. For more detailed insights into the city’s temperatures, visit our Port-au-Prince Temperature page.

Annual Precipitation in Haiti

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

Amsterdam Precipitation Compared World Wide

Port-au-Prince’s average annual precipitation is 1431 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.

In Shanghai, China, the annual average precipitation is 1347 mm, with a humid subtropical climate.

Perth, Australia, receives 565 mm of rainfall annually, mostly during the winter months.

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

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.

Sea vs. Land Precipitation

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

For more detailed information about Port-au-Prince’s weather, including sunshine hours, humidity levels, and temperature data, visit our Port-au-Prince Climate page.