Hatillo Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Hatillo, North Puerto Rico, Puerto Rico. This average is based on long-term data collected between 1990 and 2020. Now, let's break down all the details for a clearer picture.

Hatillo is known for its substantial rainfall, with annual precipitation reaching 1236 mm (49 in).

Monthly Precipitation Levels

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

The seasons in Hatillo, bring significant changes in precipitation. The wettest month, September, receives heavy rainfall, with an average of 167 mm (6.6 in) of precipitation. This rainfall is distributed across 17 rainy days.

September, the wettest month, has a maximum daytime temperature of 31°C (88°F). During the driest month February you can expect a temperature of 28°C (82°F). For more detailed insights into the city's temperatures, visit our Hatillo Temperature page.

Hatillo's average annual precipitation is 1236 mm (49 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.

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

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

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.

Climate change is affecting precipitation patterns worldwide, including Hatillo:

• 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.

• "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 Hatillo's weather, including sunshine hours, humidity levels, and temperature data, visit our Hatillo Climate page.