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

This page shows the average amount of rainfall per month in Tomohon. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s explore all the details to give you a full picture.

Tomohon has a relatively rainy climate with high precipitation levels, averaging 3203 mm of rainfall annually.

Monthly Precipitation Levels

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

The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 327 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, August, still receives a respectable 154 mm of rainfall.

June, the city’s wettest month, has a maximum daytime temperature of 29°C. During the driest month August you can expect a temperature of 30°C. For more detailed insights into the city’s temperatures, visit our Tomohon 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

Tomohon’s average annual precipitation is 3203 mm. Let’s compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm of rainfall annually, with precipitation evenly distributed throughout the year.

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

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

Ho Chi Minh City, Vietnam, receives 1955 mm of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

Sea vs. Land Precipitation

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.

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