Ranong Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Ranong, Ranong Province, Thailand. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Now, let's explore all the details to give you a full picture.

Ranong experiences significant rainfall throughout the year, averaging 2615 mm (103 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in Ranong shows significant variation throughout the year. Expect 409 mm (16 in) of precipitation during the wettest month September, distributed over 25 rainy days.

In contrast, February offers drier and sunnier days, with around 31 mm (1.2 in) of rainfall over 3 rainy days.

September, the wettest month, has a maximum daytime temperature of 29°C (84°F). The city receives 109 hours of sunshine in this period. During the driest month February you can expect a temperature of 32°C (90°F). For more detailed insights into the city's temperatures, visit our Ranong Temperature page.

Annual Rainfall in Thailand: City Comparison

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.

Annual

Annual

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Legend

heavy rainfall

high

moderate

low

almost none

Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Ranong vs World: Rainfall Compared

Ranong's average annual precipitation is 2615 mm (103 in). Let's compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) 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.

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.

Interesting weather facts

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

Current rainfall in Ranong

10-Day Forecast