Cilacap Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Cilacap, Central Java, Indonesia. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's explore all the details to give you a full picture.

Cilacap has a notably wet climate with abundant precipitation, recording 2749 mm (108 in) of rainfall per year. It does, however, have a distinct rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.

Monthly Precipitation Levels

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

The seasons in Cilacap, bring significant changes in precipitation. The wettest month, December, receives heavy rainfall, with an average of 403 mm (16 in) of precipitation. This rainfall is distributed across 17 rainy days.

In contrast, the driest month, August, experiences much less rainfall, totaling 81 mm (3.2 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

December, the wettest month, has a maximum daytime temperature of 29°C (84°F). During the driest month August you can expect a temperature of 28°C (82°F). For more detailed insights into the city's temperatures, visit our Cilacap Temperature page.

Annual Rainfall in Indonesia: City Comparison

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

Cilacap vs World: Rainfall Compared

Cilacap's average annual precipitation is 2749 mm (108 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

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.

Climate change is affecting precipitation patterns worldwide, including Cilacap:

• 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.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

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