August weather forecast
Phuket, Thailand

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Beautiful long tail boats on the white sandy shores of a beach in Phuket, Thailand
Beautiful long tail boats on the white sandy shores of a beach in Phuket, Thailand

Weather in August

August brings with it the highest rainfall recorded in the year at 287mm (11.3"). Box jellyfish sightings are common, indicating caution for sea swims. Despite the increased rainfall, the temperatures stay constant, allowing for continuity in nature-driven activities. Visitors to Phuket during this month can expect less sunshine hours but ample daylight to enjoy sight-seeing ventures. August’s weather extends its characteristics into September.

Temperature

In August, the shift in Phuket's meteorological conditions is hardly detectable, with high temperatures identical to those of July. Nighttime temperatures in August average to a moderately hot 25.3°C (77.5°F) in Phuket.

Heat index

The heat index value during August is estimated at a blistering 44°C (111.2°F). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. 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. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The average relative humidity in August is 79%.

Rainfall

In Phuket, in August, it is raining for 19 days, with typically 287mm (11.3") of accumulated precipitation. In Phuket, during the entire year, the rain falls for 170 days and collects up to 2220mm (87.4") of precipitation.

Sea temperature

In Phuket, the average seawater temperature in August is 29°C (84.2°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 Phuket, the average length of the day in August is 12h and 23min.
On the first day of the month, sunrise is at 06:19 and sunset at 18:46. On the last day of August, in Phuket, sunrise is at 06:18 and sunset at 18:35 +07.

Sunshine

In Phuket, the average sunshine in August is 5.6h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 12 in August translates into the following recommendations:
Carry out all vital precautions. Protection from sun exposure is a must. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Even on a cloudy day, sunscreen with a minimum SPF of 30 should be used liberally and reapplied often, especially after a swim or outdoor activity. Be cautious! Sand and water surfaces make the Sun's UV rays more potent.

Frequently asked questions

How hot is it in Phuket in August?

In August, the average high-temperature and low-temperature in Phuket, Thailand, are 32°C (89.6°F) and 25.3°C (77.5°F) respectively. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 44°C (111.2°F).

What is the average humidity in August in Phuket?

In August, the average relative humidity in Phuket, Thailand, is 79%.

How much does it rain in Phuket in August?

In Phuket, Thailand, in August, during 19 rainfall days, 287mm (11.3") of precipitation is typically accumulated.

What is the sea water temperature in August in Phuket?

In August, the average sea temperature in Phuket, Thailand, is 29°C (84.2°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 Phuket have in August?

In August, the average day length in Phuket is 12h and 23min.

When is the sunrise / sunset in August in Phuket?

On the first day of August in Phuket, sunrise is at 06:19 and sunset at 18:46. On the last day of the month, sunrise is at 06:18 and sunset at 18:35 +07.

How long on average sun shines in August in Phuket?

The average sunshine duration in August is 5.6h.

When is the highest UV index in Phuket?

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

What is the UV index reading in August in Phuket?

The average daily maximum UV index in August in Phuket is 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Phuket, Thailand

Average temperature in August - Phuket, Thailand
  • Average high temperature in August: 32°C

The warmest month (with the highest average high temperature) is March (34°C).
The months with the lowest average high temperature are September and October (31.5°C).

  • Average low temperature in August: 25.3°C

The month with the highest average low temperature is April (25.8°C).
The coldest month (with the lowest average low temperature) is December (24.4°C).

Average humidity in August
Phuket, Thailand

Average humidity in August - Phuket, Thailand
  • Average humidity in August: 79%

The months with the highest relative humidity are September and October (82%).
The month with the lowest relative humidity is February (69%).

Average rainfall in August
Phuket, Thailand

Average rainfall in August - Phuket, Thailand
  • Average rainfall in August: 286.8mm

The wettest month (with the highest rainfall) is September (361.2mm).
The driest month (with the least rainfall) is February (23.9mm).

Average rainfall days in August
Phuket, Thailand

Average rainfall days in August - Phuket, Thailand
  • Average rainfall days in August: 19 days

The month with the highest number of rainy days is September (23 days).
The month with the least rainy days is February (3 days).

Average sea temperature in August
Phuket, Thailand

Average sea temperature in August - Phuket, Thailand
  • Average sea temperature in August: 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).

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

Average daylight in August / Average sunshine in August - Phuket, Thailand
  • Average daylight in August: 12h and 2min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in August: 5h and 4min

The month with the most sunshine is February (Average sunshine: 9h and 42min).
The month with the least sunshine is June (Average sunshine: 4h and 42min).

Average UV index in August
Phuket, Thailand

Average UV index in August - Phuket, Thailand
  • Average UV index in August: 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 10).

Phuket, Thailand

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