August weather forecast
Bangkok, Thailand

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A beautiful park outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand
A beautiful park outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand

Weather in August

In Bangkok, August is typified by sustained rainfall, making it one of the wettest months of the year. Torrential showers are widespread, resulting in 219mm (8.62") precipitation, spreading across an extensive 20 days, making it the most rainy month. However, daylight duration begins to recede, mirroring the gradual approach of the dry season. Relative humidity also reaches its highest annual level, adding to the city's overall damp theme. As September approaches, angkorians await a decline in monsoon intensity.

Temperature

With the arrival of August, Bangkok's average high-temperature registers at a still hot 32.9°C (91.2°F), indicating a subtle variation from the previous month. During the month of August, the temperature generally drops to a low average of 25.5°C (77.9°F).

Heat index

For August, the heat index is appraised at a burning hot 46°C (114.8°F). Keep on guard: Heat exhaustion and heat cramps are probable. Heatstroke is a possible danger with ongoing physical activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In August, the average relative humidity in Bangkok is 76%.

Rainfall

In Bangkok, in August, during 20 rainfall days, 219mm (8.62") of precipitation is typically accumulated. Throughout the year, there are 128 rainfall days, and 1648mm (64.88") of precipitation is accumulated.

Sea temperature

In Bangkok, in August, the average water temperature is 28.9°C (84°F).
Note: For any water activity, surface water temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed perfect and extremely pleasing for enduring enjoyment.

Daylight

In August, the average length of the day is 12h and 34min.
On the first day of the month, sunrise is at 06:02 and sunset at 18:46. On the last day of August, sunrise is at 06:06 and sunset at 18:30 +07.

Sunshine

The months with the least sunshine are August and September, with an average of 5.2h of sunshine.

UV index

The months with the highest UV index in Bangkok are February through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 12 in August, converts into the following recommendations:
Implement all key precautions. Warding off sun damage is critical. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Regardless of cloud cover, it's recommended to apply generously and reapply often a sunscreen with an SPF of at least 30, especially after swimming or any outdoor activity. Alert! Sand and water increase UV exposure due to their reflective properties.

Frequently asked questions

How hot does it get in August?

The average high-temperature and low-temperature during August are 32.9°C (91.2°F) and 25.5°C (77.9°F) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 46°C (114.8°F).

What is the average humidity in August?

In August, the average relative humidity is 76%.

How many days does it rain in August?

In Bangkok, in August, during 20 rainfall days, 219mm (8.62") of precipitation is typically accumulated.

How warm is the water in August?

In Bangkok, in August, the average water temperature is 28.9°C (84°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.

What is the average length of the day in August?

The average day length in August is 12h and 34min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 06:02 and sunset at 18:46. On the last day of the month, in Bangkok, Thailand, sunrise is at 06:06 and sunset at 18:30 +07.

What are the months with the least sunshine?

The months with the least sunshine are August and September, with an average of 5.2h of sunshine.

How long on average sun shines in August?

In Bangkok, the average sunshine duration in August is 5.2h.

When is the highest UV index?

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

How high is the UV index in August?

The average daily maximum UV index in August is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Bangkok, Thailand

Average temperature in August - Bangkok, Thailand
  • Average high temperature in August: 32.9°C

The warmest month (with the highest average high temperature) is April (35.4°C).
The month with the lowest average high temperature is December (31.7°C).

  • Average low temperature in August: 25.5°C

The month with the highest average low temperature is April (26.9°C).
The coldest month (with the lowest average low temperature) is December (22°C).

Average humidity in August
Bangkok, Thailand

Average humidity in August - Bangkok, Thailand
  • Average humidity in August: 76%

The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is December (66%).

Average rainfall in August
Bangkok, Thailand

Average rainfall in August - Bangkok, Thailand
  • Average rainfall in August: 219.3mm

The wettest month (with the highest rainfall) is September (334.3mm).
The driest month (with the least rainfall) is December (6.3mm).

Average rainfall days in August
Bangkok, Thailand

Average rainfall days in August - Bangkok, Thailand
  • Average rainfall days in August: 20 days

The month with the highest number of rainy days is September (21 days).
The months with the least rainy days are January and December (1 days).

Average sea temperature in August
Bangkok, Thailand

Average sea temperature in August - Bangkok, Thailand
  • Average sea temperature in August: 28.9°C

The best month for swimming (with the highest average sea temperature) is May (29.9°C).
The coldest month (with the lowest average sea temperature) is January (26.7°C).

Average daylight in August /
Average sunshine in August
Bangkok, Thailand

Average daylight in August / Average sunshine in August - Bangkok, Thailand
  • Average daylight in August: 12h and 4min

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 18min).

  • Average sunshine in August: 5h and 1min

The month with the most sunshine is February (Average sunshine: 9h and 0min).
The months with the least sunshine are August and September (Average sunshine: 5h and 12min).

Average UV index in August
Bangkok, Thailand

Average UV index in August - Bangkok, Thailand
  • Average UV index in August: 12

The 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).

Bangkok, Thailand

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