Mayaguez Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Mayaguez. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Generally, Mayaguez experiences moderate precipitation patterns, averaging 794 mm yearly.

Monthly Precipitation Levels

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

The seasons in Mayaguez, bring significant changes in precipitation. The wettest month, September, receives high rainfall, with an average of 126 mm of precipitation.

This rainfall is distributed across 17 rainy days. In contrast, the driest month, January, experiences much less rainfall, totaling 23 mm over 19 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

September, the wettest month, has a maximum daytime temperature of 31°C. During the driest month January you can expect a temperature of 29°C. For more detailed insights into the city’s temperatures, visit our Mayaguez Temperature page.

Annual Precipitation in Puerto Rico

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

Amsterdam Precipitation Compared World Wide

Mayaguez’s average annual precipitation is 794 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.

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

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

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.

How Does Precipitation Affect Local Climate?

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

• Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
• Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

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