August weather forecast
Ko Samui, Thailand

August in Ko Samui, Thailand, mirrors the weather patterns of July. With the drop in rainfall to 111mm (4.37"), it is one of the more moderate months during monsoon. The sea temperature begins to drop, yet it remains comfortable for beachgoers. While showers continue, the sunshine doesn't surrender, thus maintaining the tropical island’s charm. The climate progression in August sets the stage the upcoming transitional month of September.

Temperature

With the onset of August, the average high-temperature stands at a still hot 31.7°C (89.1°F), closely aligned with July's 32.1°C (89.8°F). Ko Samui's nighttime temperature in August falls to an average of 25.2°C (77.4°F).

Heat index

In August, the average heat index is computed to be a blistering 42°C (107.6°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The months with the lowest humidity are June through August, with an average relative humidity of 78%.

Rainfall

In Ko Samui, in August, it is raining for 15 days, with typically 111mm (4.37") of accumulated precipitation. Throughout the year, in Ko Samui, there are 160 rainfall days, and 1960mm (77.17") of precipitation is accumulated.

Sea temperature

In Ko Samui, in August, the average water temperature is 29.2°C (84.6°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

In August, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 06:10 and sunset at 18:42. On the last day of August, sunrise is at 06:11 and sunset at 18:29 +07.

Sunshine

May through December, with an average of 6h of sunshine, are months with the least sunshine.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 12 in August transforms into the following instructions:
Take every essential safety procedure. Individuals with fair skin could sustain burns in less than 5 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise. Alert! Sand and water increase UV exposure due to their reflective properties.