Koh Samet Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Koh Samet. 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.

Koh Samet experiences significant rainfall throughout the year, averaging 1960 mm of precipitation annually.

Monthly Precipitation Levels

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

The seasons in Koh Samet, bring significant changes in precipitation. The wettest month, September, receives heavy rainfall, with an average of 322 mm of precipitation.

This rainfall is distributed across 19 rainy days. In contrast, the driest month, December, experiences much less rainfall, totaling 16 mm over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year.

September, the wettest month, has a maximum daytime temperature of 30°C. The city receives 110 hours of sunshine in this period. During the driest month December you can expect a temperature of 31°C. For more detailed insights into the city’s temperatures, visit our Koh Samet Temperature page.

Annual Precipitation in Thailand

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

Amsterdam Precipitation Compared World Wide

Koh Samet’s average annual precipitation is 1960 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.

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.

Singapore, situated near the equator, gets 2581 mm of rainfall annually, with no distinct dry season and consistent monthly precipitation.

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.

Interesting weather facts

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm wide and 20 cm thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters fell during the winter of 1972.

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