Monthly Travel Guide
Thailand in August
August continues the summer low season pattern: wet on the Andaman coast, largely dry on the Gulf coast. European visitors swell numbers on Koh Samui and Koh Phangan despite it not being peak season. Northern Thailand is at its most verdant and beautiful, with fewer tourists than during the cool season. Prices across the country remain at low-season levels except on the Gulf islands. Queen Mother's Birthday is celebrated on 12 August.
Weather by Region
North (Chiang Mai)
Rainy and green. Chiang Mai 24–32°C. Rain typically comes in afternoon bursts. Trekking is possible but trails can be muddy.
Central (Bangkok)
Bangkok experiences regular rain with occasional flooding in low-lying areas. Temperatures 27–33°C. Humidity is high.
South — Gulf Coast
Generally dry and warm. Koh Samui and Koh Phangan see warm conditions though some afternoon showers are possible.
South — Andaman Coast
Monsoon continues. Phuket and Krabi see heavy rain and rough seas. Limited beach activity possible on calm mornings.
Best Destinations in August
Reliably good weather on the Gulf coast while everywhere else is wet.
Lush green season scenery; the White Temple (Wat Rong Khun) and Blue Temple look spectacular in verdant surroundings.
Waterfalls and river scenery are at their best in the rainy season. Erawan Falls runs at full force.
Where to Avoid in August
Koh Lipe
Remote Andaman island with rough seas; ferry service unreliable or suspended.
Festivals & Events
Queen Mother's Birthday / Mother's Day
12 AugustThe birthday of Queen Sirikit, revered as the Mother of the Nation, is a national public holiday also celebrated as Mother's Day in Thailand. Illuminations and ceremonies take place in Bangkok around the Royal Palace area.