Arecibo Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Arecibo, North Puerto Rico, Puerto Rico. Long-term data from 1990 to 2020 was used to calculate these averages. Let's now guide you through the details for a complete overview.

Arecibo has a relatively rainy climate with high precipitation levels, averaging 1260 mm (50 in) of rainfall annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in Arecibo shows significant variation throughout the year. Expect 172 mm (6.8 in) of precipitation during the wettest month May, distributed over 15 rainy days.

In contrast, February offers drier and sunnier days, with around 49 mm (1.9 in) of rainfall over 14 rainy days.

May, the wettest month, has a maximum daytime temperature of 30°C (86°F). During the driest month February you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our Arecibo Temperature page.

Arecibo's average annual precipitation is 1260 mm (50 in). Let's compare this to some popular worldwide tourist destinations:

Seville, Spain, experiences 541 mm (21 in) of rainfall annually, with wet winters and dry summers typical of southern Spain.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

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.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA, over 31.5 meters (103 feet) fell during the winter of 1972.

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