Sidoarjo Rainfall & Precipitation: Monthly Averages and Year-Round Insights

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 of rainfall per year.

Monthly Precipitation Levels

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

The seasons in Sidoarjo, bring significant changes in precipitation. The wettest month, February, receives heavy rainfall, with an average of 338 mm of precipitation.

This rainfall is distributed across 17 rainy days. In contrast, the driest month, August, experiences much less rainfall, totaling 8.2 mm 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. The city receives 124 hours of sunshine in this period. During the driest month August you can expect a temperature of 33°C. For more detailed insights into the city’s temperatures, visit our Sidoarjo Temperature page.

Annual Precipitation in Indonesia

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.

Amsterdam Precipitation Compared World Wide

Sidoarjo’s average annual precipitation is 1793 mm. Let’s compare this to some popular worldwide tourist destinations:

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

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

In Tokyo, Japan, the average annual precipitation is 1528 mm, with significant summer rains due to typhoon season.

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.

How Does Precipitation Affect Local Climate?

Precipitation has a very strong role in determining the local climate and ecosystem:

• Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
• Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

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