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

This page shows the average amount of rainfall per month in Shillong. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Shillong has a relatively rainy climate with high precipitation levels, averaging 3880 mm of rainfall annually.

Monthly Precipitation Levels

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

The seasons in Shillong, bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 770 mm of precipitation.

This rainfall is distributed across 21 rainy days. In contrast, the driest month, December, experiences much less rainfall, totaling 22 mm over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year.

July, the city’s wettest month, has a maximum daytime temperature of 27°C and receives 98 hours of sunshine. During the driest month December you can expect a temperature of 20°C. For more detailed insights into the city’s temperatures, visit our Shillong Temperature page.

Annual Precipitation in India

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

Amsterdam Precipitation Compared World Wide

Shillong’s average annual precipitation is 3880 mm. Let’s compare this to some popular worldwide tourist destinations:

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

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

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

Kuala Lumpur, Malaysia, receives 2529 mm of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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 Shillong’s weather, including sunshine hours, humidity levels, and temperature data, visit our Shillong Climate page.