Iloilo City Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows both the average monthly rainfall and the number of rainy days in Iloilo City, Province of Iloilo, Philippines. Long-term data from 1990 to 2020 was used to calculate these averages. Now, let’s break down all the details for a clearer picture.

Iloilo City has a relatively rainy climate with high precipitation levels, averaging 2154 mm of rainfall annually.

Monthly Precipitation Levels

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

Iloilo City can be quite wet during July, receiving approximately 333 mm of precipitation over 19 rainy days.

In contrast April, experiences much drier conditions, with 63 mm of rainfall, spread across 5 rainy days.

July, the wettest month, has a maximum daytime temperature of 31°C. During the driest month April you can expect a temperature of 34°C. For more detailed insights into the city’s temperatures, visit our Iloilo City Temperature page.

Annual Precipitation in Philippines

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

Amsterdam Precipitation Compared World Wide

Iloilo City’s average annual precipitation is 2154 mm. Let’s compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm, with rain and snow contributing to its humid climate.

Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.

Melbourne, Australia, has 690 mm of rainfall annually, spread fairly evenly throughout the year.

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.

Global Precipitation Patterns

Tropical Rainforests: In tropical regions, rainfall is generally abundant year-round. Areas near the equator, like the Amazon rainforest, can receive up to 3000 mm of rain annually.

Desert Regions: Deserts such as the Sahara and Arabian deserts typically see less than 250 mm of rainfall annually. Rainfall tends to be infrequent, but when it does occur, it is often intense.

Temperate Zones: In temperate regions, precipitation tends to be more evenly distributed, though areas closer to the ocean may see more rain in the winter months, and areas further inland experience drier summers.

Polar Regions: Precipitation in polar regions, like Antarctica, is extremely low, often falling as snow. Average annual precipitation in Antarctica is less than 200 mm, with some areas receiving as little as 50 mm annually.

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