Monthly weather forecast and climate
Phuket, Thailand

A close view of beautiful long tail boats on the white sandy shores of a beach in Phuket, Thailand
A close view of beautiful long tail boats on the white sandy shores of a beach in Phuket, Thailand
Phuket, the second smallest province and largest island of Thailand, experiences a tropical monsoon climate classified under the Köppen climatic classification as Am. The climate is characterized by moderately high temperatures that have little variations throughout the year. Geographically located off the west coast of Southern Thailand in the Andaman Sea, Phuket has two major seasons: the long hot and rainy season and the short hot and dry season.

The rainy season from April to November is influenced by the monsoon. There is high rainfall throughout with an average precipitation of 299.7mm (11.8"). September is the rainiest month with precipitation of 408.9mm (16.1") on average. The wet season remains moderately hot, with temperatures going as high as 34°C (93.2°F).

Within the rainy season, there is a period with the hottest temperatures of the year. Between February and April, the temperatures can go up to 37°C (98.6°F), making the hottest three months in Phuket. Humidity is moderately high in Phuket across the year, with a high average of 77%. The most humid months are September and October, with 82% humidity on average.

From December to March, Phuket experiences the dry season with minimal rainfall that fetches a low average precipitation of 43.2mm (1.7"). February remains the driest month with only four days of rain and a low precipitation of 27.9mm (1.1"). Humidity averages 70% during this period, with February as the least humid month at 69.1% of relative humidity.
The best time to visit Phuket is from mid-November to March. The temperatures remain high and scorching in the range of 22°C (71.6°F) and 34°C (93.2°F). Any outdoor engagements require protective sunscreen and cover from the hot sun, and a mildly high UV index of 9. However, the humidity is moderately tolerable, and the season is devoid of the extremely high rainfall of the wet season.
This period is suitable for touring all the lovely places in Phuket. Spending time on the glorious beaches is possible with warm sea temperatures of 29°C (84.2°F) on most days.
Touring the numerous islands around Phuket, the famous temples, and the striking monuments like the Giant Buddha make the top gorgeous bucket list ideas for any visit to the beautiful province. Clear blue skies and clear warm waters prevailing in the season makes a good time for sight-seeing from several striking viewpoints.

The worst time to visit Phuket is from July to October. This period falls in the rainiest and hottest weather. Touring Phuket becomes interrupted occasionally with the high rainfall. When the rains fall continuously for several days, Phuket gets wet and unpleasant with mild floods at its downtown.
The beaches remain lovely in the mid-morning, but often the sea gets rough with high waves and dangerous currents due to the monsoon. During this period, on most of the afternoons, the currents force an end to swim and any other sea activities.

Phuket is susceptible to flooding during the wet season. When the rains are received for several days continuously, floods build up and can cause significant damage.
During the monsoon season, Phuket is prone to tropical storms, albeit mildly, that can be highly hazardous. This period can also result in moderately high tides and strong currents that are potentially dangerous.
Tropical cyclones and typhoons can hit Phuket, although their occurrence differs from year to year as a result of Phuket's location on the Andaman Sea.

An average low humidity of 70% introduces the moderately hot weather of January. The weather is mainly characterized by high temperatures in the range of 22°C (71.6°F) and 32°C (89.6°F), and up to eight hours of hot sun daily. Weather in January »

Temperatures remain high in the range of 23°C (73.4°F) and 33°C (91.4°F), making the weather quite warm. February activities include swimming in the 29°C (84.2°F) ocean, and island hopping to cool off the excess heat. Weather in February »

The temperatures remain hot and scorching in the range of 23°C (73.4°F) and 34°C (93.2°F) prompting most people to escape the weather with the prolonged swims in the ocean. Weather in March »

The days are moderately hot and sunny, experiencing up to nine hours of sunshine, and more cover and sunscreen protection remains essential. Weather in April »

A steady high temperature in the range of 25°C (77°F) and 32°C (89.6°F) introduces the hot weather in May. Days remain hot with eight hours of sunshine on average, consequently heating the sea to 30°C (86°F). Weather in May »

The sea always remains warm at 30°C (86°F) from the seven warm hours of sunshine each day. Temperatures still scorch in the high range of 25°C (77°F) and 32°C (89.6°F) making most days sunny and tropical. Weather in June »

With eight long hours of sunshine and scorching temperatures in the range of 25°C (77°F) and 31°C (87.8°F), July in Phuket remains quite hot. Weather in July »

August experiences a slight reduction in rainfall, but still fetches moderately high precipitation of 264.2mm (10.4") across nineteen days of rain. The days are wet but remain sunny from the eight daily hours of sunshine. Weather in August »

September is the coolest month in Phuket with moderately low temperatures in the range of 24°C (75.2°F) and 30°C (86°F). These are the lowest temperatures experienced in Phuket. Weather in September »

Temperatures remain quite high in the range of 24°C (75.2°F), and 31°C (87.8°F) and the primary outdoor activities remain swimming in the endless beaches and touring the islands around Phuket. Weather in October »

November has consistent high temperatures in the range of 23°C (73.4°F) and 31°C (87.8°F), making most days hot albeit tolerable. The skies become less cloudy, and sight-seeing improves. Weather in November »

The days get drier, and the sunshine hours increase to eight per day, making most days warmer and mildly pleasant. Temperatures remain high in the range of 23°C (73.4°F) and 31°C (87.8°F). Weather in December »

How much does it rain in Phuket?

In Phuket, Thailand, during the entire year, the rain falls for 170 days and collects up to 2219.5mm (87.4") of precipitation.

What are the months with the coldest sea water in Phuket?

January, February and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Phuket, Thailand. 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.

What is the driest month in Phuket?

The month with the least rainfall is February when the rain falls for 3 days and typically collects 23.9mm (0.9") of precipitation.

What is the warmest month in Phuket?

The warmest month is March, with an average high-temperature of 34°C (93.2°F) and an average low-temperature of 25.4°C (77.7°F).

What months are the sea warmest in Phuket?

April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Phuket. For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

What is the coldest month in Phuket?

The coldest months in Phuket, Thailand, are September and October, with an average high-temperature of 31.5°C (88.7°F).

What is the wettest month in Phuket?

The month with the most rainfall is September when the rain falls for 23 days and typically aggregates up to 361.2mm (14.2") of precipitation.
Average temperature - Phuket, Thailand
Average humidity - Phuket, Thailand
Average rainfall - Phuket, Thailand

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

Average rainfall days - Phuket, Thailand
Average sea temperature - Phuket, Thailand

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

Average daylight / Average sunshine - Phuket, Thailand

The month with the longest days is June (Average daylight: 12.6h).
Months with shortest days are January and December (Average daylight: 11.7h).

The month with most sunshine is February (Average sunshine: 9.7h).
The month with least sunshine is June (Average sunshine: 4.7h).

Average UV index - Phuket, Thailand

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).