Things to Do in Southeast Asia in April
April weather, activities, events & insider tips
April Weather in Southeast Asia
Is April Right for You?
Advantages
- Peak diving season at Similan Islands (April 15-30 final weeks before monsoon closure) with 30m (98 ft) visibility and whale shark sightings
- Songkran water festival (April 13-15) transforms Thailand into the world's largest water fight with authentic cultural ceremonies in smaller towns
- Lowest rainfall of the year makes it perfect for island hopping - ferries run on schedule and beaches are accessible
- Temple visiting ideal in early morning (6-9am) and evening (5-7pm) when temperatures drop to 28-30°C (82-86°F)
Considerations
- Midday temperatures reach 40°C (104°F) in cities like Bangkok and Chiang Mai, making afternoon outdoor activities uncomfortable
- Peak season pricing with hotels 40-60% more expensive than low season, especially during Songkran week
- Air quality in northern Thailand often poor due to burning season, with Chiang Mai AQI frequently above 150
Best Activities in April
Similan Islands Diving and Snorkeling
April offers the final 2-3 weeks of Similan National Park season (closes May 15) with the year's clearest water. Visibility reaches 30m (98 ft), water temperature perfect at 28°C (82°F), and whale shark encounters peak. The intense heat makes cool ocean water incredibly refreshing.
Sunrise Temple Tours in Angkor
Beat the extreme heat by starting at 5am for Angkor Wat sunrise, exploring major temples 6-10am when temperatures are manageable at 26-32°C (79-90°F). April's dry conditions mean no muddy paths and crystal clear sunrise photos without haze.
Bangkok Food Market Tours
April's dry weather means street food vendors operate full hours without rain disruptions. Start at 6am in markets like Or Tor Kor and Saphan Phut when temperatures are bearable. The heat actually enhances flavors of som tam and brings out aromatic herbs in boat noodles.
Northern Thailand Hill Tribe Trekking
Despite burning season air quality issues, early morning treks 5-9am in areas around Chiang Mai offer cooler temperatures 22-28°C (72-82°F) and misty mountain views. April is harvest season for many hill tribes, offering authentic cultural encounters.
Mekong Delta Floating Market Tours
April's low rainfall means Mekong tributaries are calm and accessible. Early morning tours (5-9am) avoid afternoon heat and catch markets at peak activity. Dragon fruit and rambutan are in season, and vendors stay out longer due to lack of rain.
Koh Phi Phi Island Hopping
April offers the last weeks of peak season conditions before southwest monsoon arrives in May. Seas are calm, longtail boats operate full schedules, and Maya Bay access is guaranteed. Water temperature perfect for swimming at 29°C (84°F).
April Events & Festivals
Songkran Water Festival
Thailand's New Year celebration transforms the entire country into a massive water fight while maintaining deep spiritual significance. Bangkok's Silom and Khao San roads become party zones, while Chiang Mai and smaller towns offer more traditional ceremonies with temple visits and ancestor veneration. Expect business closures April 12-16.
Cambodian New Year (Chaul Chnam Thmey)
Cambodia's most important holiday brings temple festivities, traditional games, and family gatherings. Angkor Wat hosts special ceremonies, but expect higher crowds and some business closures. Local markets overflow with seasonal treats like num ansom and kralan.