Sidoarjo Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Sidoarjo, East 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.

Sidoarjo has a notably wet climate with abundant precipitation, recording 1793 mm (71 in) of rainfall per year. It does, however, have a distinct dry and 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 Sidoarjo, bring significant changes in precipitation. The wettest month, February, receives heavy rainfall, with an average of 338 mm (13 in) of precipitation. This rainfall is distributed across 17 rainy days.

In contrast, the driest month, August, experiences much less rainfall, totaling 8.2 mm (0.3 in) over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year.

February, the wettest month, has a maximum daytime temperature of 32°C (90°F). The city receives 124 hours of sunshine in this period. During the driest month August you can expect a temperature of 33°C (91°F). For more detailed insights into the city's temperatures, visit our Sidoarjo Temperature page.

Sidoarjo's average annual precipitation is 1793 mm (71 in). Let's compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

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.

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

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