September weather forecast
Pattaya, Thailand

September stands out for its maximum rainfall of the year - 205mm (8.07"). The month experiences the highest relative humidity of 81% among all. Slowly retracting temperatures and diminishing daylight accentuate the predominantly wet and cloudy weather. The reduction in sea temperature and sunshine hours should be considered while planning outdoor activities. Lush, rain-washed landscapes offer a different appeal to visitors during September.

Temperature

The shift from August to September is characterized by an average high-temperature of a still hot 31°C (87.8°F), not significantly different from the 31.2°C (88.2°F) of August. An average temperature of 25.2°C (77.4°F) is recorded in Pattaya during the nights in September.

Heat index

During September, the heat index is appraised at an extremely hot 41°C (105.8°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Pattaya, the average relative humidity in September is 81%.

Rainfall

In Pattaya, during September, the rain falls for 17 days and regularly aggregates up to 205mm (8.07") of precipitation. In Pattaya, during the entire year, the rain falls for 106 days and collects up to 1111mm (43.74") of precipitation.

Sea temperature

In September, the average sea temperature in Pattaya is 29.1°C (84.4°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Pattaya, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:27. On the last day of September, sunrise is at 06:05 and sunset at 18:07 +07.

Sunshine

The months with the least sunshine in Pattaya are June through September, with an average of 5h of sunshine.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index in Pattaya, Thailand. A UV Index estimate of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 12 in September interprets into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. After every outdoor workout or swim, liberally apply and frequently reapply a broad-spectrum SPF 30+ sunscreen. Caution! Sand and water surfaces escalate the UV intensity from the Sun.