Thailand in June: a good time to visit? There’s a sacred festival, a royal holiday, a marathon, a jazz festival, and countrywide gay pride celebrations. And how is the Weather? Is it sunnier in Phuket or Koh Samui? Check out weather conditions in key Thai cities.
Last Updated: 24 December 2025.
In This Post
June Weather in Thailand
What is the weather like in Thailand in June? Because of high humidity, overcast skies, and lots of rain, June is considered wet season in Thailand. The Southwestern monsoon blows in from the Indian Ocean.
As a result, the weather tends to be hot, humid, and cloudy. It rains most days during this period. However, it is not as hot as during March, April, or May.
There are, of course, some regional differences in the weather. The Southern Thai islands of Phuket and Koh Samui, for example, experience very different types of weather in June.
Phuket is a bit cooler but much more humid. And it has less sunshine and considerably more rain. Koh Samui, meanwhile, is hotter, sunnier, and less humid. Moreover, the island also has much less rain than its neighbor to the East.
A look at the weather in the cities featured into this month’s travel guide follows.
Bangkok Weather in June
Bangkok is the nation’s capital. It is located in the Central region of the country.
Bangkok has an average high of 33 degrees Celsius, or 91 degrees Fahrenheit, in June. The average low drops to 26 degrees Celsius, or 79 degrees Fahrenheit. June is slightly cooler than May.
Bangkok has a daily average of six hours of sunshine a day in June. There are about 17 rainy days and an average of 180 millimeters of rain during the month. But the average humidity is a relatively mild 73%.
Chiang Mai Weather in June
Chiang Mai is located in the mountains of Northern Thailand.
Chiang Mai has an average high of 33 degrees Celsius, or 91 degrees Fahrenheit, in June. The average low drops to 24 degrees Celsius, or 75 degrees Fahrenheit. June is slightly cooler than May.
Chiang Mai has a daily average of six hours of sunshine in June. There are about 18 rainy days and an average of 130 millimeters of rain during the month. Although it is a rainy month, it gets less rainfall than May, July, August, or September. The average humidity is 75%.
Hua Hin Weather in June
Hua Hin is a popular beach resort in Central Thailand. It overlooks the Gulf of Thailand. Because it is a three hours’ drive from Bangkok, it is particularly popular with Bangkokians.
Hua Hin has an average high of 33 degrees Celsius, or 91 degrees Fahrenheit, in June. The average low drops to 26 degrees Celsius, or 79 degrees Fahrenheit. June is slightly cooler than May.
Hua Hin has a daily average of seven hours of sunshine in June. There are about 10 rainy days and an average of 80 millimetres of rain during the month. And the average humidity is a stuffy 80%.
Koh Samui Weather in June
Koh Samui is a popular beach resort in Southern Thailand. It is located off the coast of the mainland in the Gulf of Thailand.
Koh Samui has an average high of 34 degrees Celsius, or 93 degrees Fahrenheit, in June. The average low drops to 25 degrees Celsius, or 77 degrees Fahrenheit. June is slightly cooler than May.
Koh Samui enjoys a daily average of nine hours of sunshine in June. There are about five rainy days and an average of 50 millimeters of rain during the month. The average humidity is a mild 70%.
Because of mostly sunny skies and little rainfall, Koh Samui is a popular destination for beach-goers in June.
Phuket Weather in June
Phuket is Thailand largest island. It is also the country’s most popular beach resort. It is located off the shore of the mainland in the Andaman Sea.
Phuket has an average high of 32 degrees Celsius, or 90 degrees Fahrenheit, in June. The average low drops to 25 degrees Celsius, or 77 degrees Fahrenheit. June is slightly cooler than May.
Phuket has a daily average of seven hours of sunshine in June. There are about 18 rainy days. An average of 240 millimeters of rain falls in the month. The average humidity is 85%.
Because of the frequent rain, many beach-goers avoid Phuket in June. However, hotels often offer discounts this month, making the island a good choice for bargain-hunters or event-planners.
Songkha Weather in June
Songkhla is a coastal city in Southern Thailand, located on the Gulf of Thailand near the Malaysian border.
Songkhla has an average high of 33 degrees Celsius, or 91 degrees Fahrenheit, in June. The average low drops to 24 degrees Celsius, or 75 degrees
Fahrenheit. June is one of the warmest months of the year.
Songkhla enjoys a daily average of about 12 hours of daylight in June, with ample sunshine despite frequent showers. There are roughly 12 to 15 rainy days and an average of 100 millimeters of rainfall during the month. The average humidity remains high, around 80%, giving the city a distinctly tropical feel.
Because of its combination of warm temperatures, high humidity, and regular rainfall, Songkhla in June is best suited for travelers interested in cultural exploration, local cuisine, and festivals rather than purely beach‑focused holidays.
Gay Pride Month in Thailand
June is recognized globally as Gay Pride Month, and Thailand is no exception. Click HERE for more information. COMING!
Queen Suthida’s Birthday – 3 June 2026
His Majesty Maha Vajiralongkorn married his royal consort, General Suthida Vajiralongkorn Na Ayudhya, in Bangkok on 1 May.
The king’s wife has received the title of Queen Suthida. Her birthday is 3 June. It has been declared a national holiday in Thailand. If it falls on a weekend, it is celebrated on the following Monday.
Full Moon Party – 19 June 2026
The Full Moon Party is held on the beach of Haad Rin every month on the night of the full moon.
DJs play a variety of musical styles including trance, dubstep, reggae, and techno. Jugglers, fire-eaters, and fireworks add drama to the all-night event.
Haad Rin is crescent shaped beach located on the island of Ko Pha Ngan. It can be reached by boat from Koh Samui, an island off the coast of Southern Thailand.
Koh Samui is 293 miles (471 kilometres) south of Bangkok. Because the drive takes nearly 10 hours, air travel is recommended,. The flight takes just over one hour.
Laguna Phuket Marathon – 12 & 14 June 2026
Thousands of sports enthusiasts take part in Laguna Phuket Marathon each year. In fact, it is the Southern Thai island’s largest participatory event.
There will be a two‑kilometer kids run as well as a five‑kilometer and a 10.5‑kilometer run in the afternoon.
There will be a Half Marathon (21.0975 km), Marathon (42.195 km), and Marathon Relay (42.195 km) in the morning.
Phuket is about 425 miles (685 kilometers) south‑southwest of Bangkok. Because the drive takes about 10 and one‑half hours, other forms of transportation are recommended.
If You are Visiting Thailand
Check out these tips on how to be polite in the Land of Smiles.
Book Hotel Rooms in Thailand!
Check out the best Thai hotel deals at your favourite hotel booking website.
If you book a hotel room at one of the above booking websites, I will get a small commission to help cover the cost of publishing this blog – at NO extra charge.
This post contains affiliate links. If you make a purchase, I may receive a small commission.
