Hat Yai
Thailand
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Hat Yai, Thailand

The first month of the autumn, September, is still a tropical month in Hat Yai, Thailand, with average temperature varying between 32.5°C (90.5°F) and 23.4°C (74.1°F).

Temperature

In September, the average high-temperature is practically the same as in August - a still tropical 32.5°C (90.5°F). The average low-temperature, in Hat Yai, is 23.4°C (74.1°F).

Heat index

The average heat index is estimated at a blazing hot 47.2°C (117°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like pregnancy, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity is 82%.

Rainfall

In September, the rain falls for 18 days. Throughout September, 157.3mm (6.2") of precipitation is accumulated. Throughout the year, there are 160 rainfall days, and 1726.3mm (68") of precipitation is accumulated.

Daylight

The average length of the day in September is 12.2h.

Sunshine

Months with the least sunshine in Hat Yai are June, August through December, with an average of 6h of sunshine.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index in Hat Yai. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 12 in September interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in September in Hat Yai?

The average high-temperature, in September, in Hat Yai, is 32.5°C (90.5°F), while the average low-temperature is 23.4°C (74.1°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines air temperature and relative humidity, is evaluated at 47.2°C (117°F).

What is the average humidity in September in Hat Yai?

In September, the average relative humidity in Hat Yai, Thailand, is 82%.

How much does it rain in Hat Yai in September?

In September, in Hat Yai, Thailand, the rain falls for 18 days. Throughout September, 157.3mm (6.2") of precipitation is accumulated.

How many hours of daylight does Hat Yai have in September?

In September, the average length of the day in Hat Yai, Thailand, is 12.2h.

What is the month with the least sunshine in Hat Yai?

June, August through December, with an average of 6h of sunshine, are months with the least sunshine in Hat Yai, Thailand.

How many hours of sunshine does Hat Yai have in September?

In September, the average sunshine in Hat Yai is 6h.

What are the months with the highest UV index in Hat Yai?

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

How high is the UV index in September in Hat Yai?

The average daily maximum UV index in September in Hat Yai is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Hat Yai, Thailand
  • Average high temperature in September: 32.5°C

The warmest month (with the highest average high temperature) is April (34.6°C).
The month with the lowest average high temperature is December (29.7°C).

  • Average low temperature in September: 23.4°C

The month with the highest average low temperature is May (24°C).
The coldest month (with the lowest average low temperature) is January (22°C).

Average humidity in September - Hat Yai, Thailand
  • Average humidity in September: 82%

The month with the highest relative humidity is November (87%).
The month with the lowest relative humidity is March (76%).

Average rainfall in September - Hat Yai, Thailand
  • Average rainfall in September: 157.3mm

The wettest month (with the highest rainfall) is November (317.1mm).
The driest month (with the lowest rainfall) is February (24.4mm).

Average rainfall days in September - Hat Yai, Thailand
  • Average rainfall days in September: 18 days

Months with the highest number of rainy days are October and November (21 days).
The month with the lowest number of rainy days is February (3 days).

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

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in September: 6h

The month with most sunshine is February (Average sunshine: 9h).
Months with least sunshine are June, August, September, October, November and December (Average sunshine: 6).

Average UV index in September - Hat Yai, Thailand
  • Average UV index in September: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 11).