September weather forecast
Hua Hin, Thailand

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Scenic blue sky, clear water, and rocks on the white sandy beach of Sainoi in Hua Hin, Thailand
Scenic blue sky, clear water, and rocks on the white sandy beach of Sainoi in Hua Hin, Thailand

Weather in September

September in Hua Hin marks the peak of the rainy season with the highest rainfall of the year at 120mm (4.72"). Despite being the wettest month, the weather remains predominantly warm, with temperatures only slightly decreasing from the previous month. Despite the copious rainfall, Sunshine prevails, providing an average of five hours per day. As the month comes to a close, the rainfall begins to gradually decrease, hinting at the onset of the drier months. The warm sea becomes a consolation for the regular showers, remaining pleasant for those who crave a refreshing dip.

Temperature

Hua Hin, Thailand, marks the start of September with an average high-temperature of a still tropical 32.4°C (90.3°F), hinting at a slight fluctuation from August's 33°C (91.4°F). In Hua Hin, September's nights observe an average temperature dip to a warm 25°C (77°F).

Heat index

The heat index for September is computed to be a burning hot 45°C (113°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in September in Hua Hin is 77%.

Rainfall

In Hua Hin, during September, the rain falls for 17 days and regularly aggregates up to 120mm (4.72") of precipitation. Throughout the year, in Hua Hin, there are 118 rainfall days, and 955mm (37.6") of precipitation is accumulated.

Sea temperature

In Hua Hin, the average seawater temperature in September is 29°C (84.2°F).
Note: In water activities such as swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed highly pleasurable for extended periods without any unease.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of the month, sunrise is at 06:09 and sunset at 18:30. On the last day of September, sunrise is at 06:09 and sunset at 18:10 +07.

Sunshine

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

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 12 in September suggests the following recommendations:
Take all critical precautions, unprotected skin might burn swiftly. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. After every outdoor workout or swim, liberally apply and frequently reapply a broad-spectrum SPF 30+ sunscreen. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
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Frequently asked questions

How hot does it get in Hua Hin in September?

During September, Hua Hin experiences an average high-temperature of 32.4°C (90.3°F) and a low-temperature of 25°C (77°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is computed to be 45°C (113°F).

What is the average humidity in September in Hua Hin?

In Hua Hin, the average relative humidity in September is 77%.

How much does it rain in Hua Hin in September?

In Hua Hin, Thailand, in September, during 17 rainfall days, 120mm (4.72") of precipitation is typically accumulated.

What is the sea water temperature in September in Hua Hin?

In Hua Hin, Thailand, in September, the average water temperature is 29°C (84.2°F). 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.

How many hours of daylight does Hua Hin have in September?

In Hua Hin, the average day length in September is 12h and 12min.

When is the sunrise / sunset in September in Hua Hin?

On the first day of September in Hua Hin, Thailand, sunrise is at 06:09 and sunset at 18:30. On the last day of the month, sunrise is at 06:09 and sunset at 18:10 +07.

What is the month with the least sunshine in Hua Hin?

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

How many hours of sunshine does Hua Hin have in September?

In September, the average sunshine duration in Hua Hin is 5h.

What is the month with the highest UV index in Hua Hin?

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

What is the UV index reading in September in Hua Hin?

In September, the average daily maximum UV index in Hua Hin, Thailand, is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Hua Hin, Thailand

Average temperature in September - Hua Hin, Thailand
  • Average high temperature in September: 32.4°C

The warmest months (with the highest average high temperature) are April and May (33.6°C).
The month with the lowest average high temperature is December (29.5°C).

  • Average low temperature in September: 25°C

The month with the highest average low temperature is May (26°C).
The coldest month (with the lowest average low temperature) is January (22.2°C).

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Average humidity in September
Hua Hin, Thailand

Average humidity in September - Hua Hin, Thailand
  • Average humidity in September: 77%

The month with the highest relative humidity is October (80%).
The month with the lowest relative humidity is December (67%).

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Average rainfall in September
Hua Hin, Thailand

Average rainfall in September - Hua Hin, Thailand
  • Average rainfall in September: 120.4mm

The wettest month (with the highest rainfall) is October (246.2mm).
The driest month (with the least rainfall) is December (7.9mm).

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Average rainfall days in September
Hua Hin, Thailand

Average rainfall days in September - Hua Hin, Thailand
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is August (18 days).
The months with the least rainy days are January, February, March and December (2 days).

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Average sea temperature in September
Hua Hin, Thailand

Average sea temperature in September - Hua Hin, Thailand
  • Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are April, May and June (30°C).
The coldest months (with the lowest average sea temperature) are January, February and December (28°C).

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Average daylight in September /
Average sunshine in September
Hua Hin, Thailand

Average daylight in September / Average sunshine in September - Hua Hin, Thailand
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in September: 5h

The months with the most sunshine are January, February, March and December (Average sunshine: 9h).
The months with the least sunshine are June, July, August and September (Average sunshine: 5h).

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Average UV index in September
Hua Hin, Thailand

Average UV index in September - Hua Hin, Thailand
  • Average UV index in September: 12

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

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Hua Hin, Thailand

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