September weather forecast
Pattaya, Thailand

The Sanctuary of Truth Temple in Pattaya, Thailand, in the middle of a lovely natural park garden
The Sanctuary of Truth Temple in Pattaya, Thailand, in the middle of a lovely natural park garden

Weather in September

September, the first month of the autumn, in Pattaya, is also a hot month, with temperature in the range of an average low of 25.2°C (77.4°F) and an average high of 31°C (87.8°F).

Temperature

In Pattaya, the average high-temperature in September is relatively the same as in August - a still tropical 31°C (87.8°F). In Pattaya, the average low-temperature is 25.2°C (77.4°F).

Heat index

In September, the average heat index is appraised at a blistering 41.2°C (106.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, clothing). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in Pattaya is 81%.

Rainfall

In Pattaya, Thailand, in September, during 17 rainfall days, 204.7mm (8.06") of precipitation is typically accumulated. In Pattaya, during the entire year, the rain falls for 106 days and collects up to 1110.7mm (43.73") of precipitation.

Sea temperature

In Pattaya, the average water temperature is 29.1°C (84.4°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Pattaya, the average length of the day is 12.2h.

Sunshine

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

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index in Pattaya. A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 12 interpret into the following advice:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in September in Pattaya?

In September, in Pattaya, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 25.2°C (77.4°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is appraised at 41.2°C (106.2°F).

What is the average humidity in September in Pattaya?

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

How many days does it rain in September in Pattaya?

In Pattaya, in September, during 17 rainfall days, 204.7mm (8.06") of precipitation is typically accumulated.

What is the water temperature in September in Pattaya?

In September, the average sea temperature in Pattaya is 29.1°C (84.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Pattaya have in September?

In Pattaya, the average length of the day in September is 12.2h.

What is the month with the least sunshine in Pattaya?

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

How long on average sun shines in September in Pattaya?

The average sunshine in September in Pattaya, Thailand, is 5h.

When is the highest UV index in Pattaya?

Months with the highest UV index in Pattaya are February through September, with an average maximum UV index of 12.

How high is the UV index in September in Pattaya?

In Pattaya, Thailand, the average daily maximum UV index in September is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Pattaya, Thailand

Average temperature in September - Pattaya, Thailand
  • Average high temperature in September: 31°C

The warmest month (with the highest average high temperature) is April (32.9°C).
The month with the lowest average high temperature is December (30°C).

  • Average low temperature in September: 25.2°C

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is December (22.5°C).

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Average humidity in September
Pattaya, Thailand

Average humidity in September - Pattaya, Thailand
  • Average humidity in September: 81%

The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is December (70%).

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Average rainfall in September
Pattaya, Thailand

Average rainfall in September - Pattaya, Thailand
  • Average rainfall in September: 204.7mm

The wettest month (with the highest rainfall) is October (216.1mm).
The driest month (with the least rainfall) is December (8.3mm).

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Average rainfall days in September
Pattaya, Thailand

Average rainfall days in September - Pattaya, Thailand
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is October (18 days).
Months with the least rainy days are January and December (1 days).

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Average sea temperature in September
Pattaya, Thailand

Average sea temperature in September - Pattaya, Thailand
  • Average sea temperature in September: 29.1°C

The best month for swimming (with the highest average sea temperature) is May (30°C).
The coldest month (with the lowest average sea temperature) is January (27.2°C).

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Average daylight in September /
Average sunshine in September
Pattaya, Thailand

Average daylight in September / Average sunshine in September - Pattaya, Thailand
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.9h).
The month with the shortest days is December (Average daylight: 11.4h).

  • Average sunshine in September: 5h

Months with the most sunshine are January, February, March, April and December (Average sunshine: 8h).
Months with the least sunshine are June, July, August and September (Average sunshine: 5).

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Average UV index in September
Pattaya, Thailand

Average UV index in September - Pattaya, Thailand
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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