Thailand Infos

Thailand in April: weather, best places and festivals

April is the hottest month of the year. In Pai the average reaches 39 degrees, in Kanchanaburi 38, in Ayutthaya 37, in Chiang Mai and Isan 36. Only 3 places stay dry: Ayutthaya, Chiang Mai and Hua Hin. The early morning hours are best for visiting temples.

On the Andaman Sea the rainy season begins. Khao Lak, Khao Sok and Koh Lipe are above 200 millimetres, Phuket at 143. The Gulf is calmer: Koh Samui, Koh Phangan and Koh Tao have 83 millimetres at 32 degrees. From 13 to 15 April it is Songkran, the water festival, and the whole country is on the move.

All 20 destinations in April

Sorted by rain, driest first. The figures are monthly averages from 1981 to 2010; the temperature is the average daily high.

dry 3 places

Under 60 millimetres of rain a month.

Curved sandy beach of Hua Hin in warm evening light, with a green hill and a golden temple at the end of the bay and fishing boats in the waterHua Hin46 mm34 °C, 26 °C at nightQuiet seaside resort on the GulfThree restored bell-shaped chedis of Wat Phra Si Sanphet in Ayutthaya in warm morning light, with lawn and old brick walls in frontAyutthaya49 mm37 °C, 26 °C at nightOld royal capital on the riverGolden chedi of a temple on a wooded hill, surrounded by mist, rice terraces and mountains in northern Thailand, seen from aboveChiang Mai57 mm36 °C, 23 °C at nightTemples and mountains in the north

changeable 12 places

60 to 150 millimetres, expect showers.

Misty green Pai valley at sunrise with gentle mountains and a small bamboo bridge over rice fieldsPai63 mm39 °C, 22 °C at nightMountain valley in the north-westPattaya beach promenade in the evening with palm trees, a curved bay and high-rises in the backgroundPattaya64 mm33 °C, 26 °C at nightBeach city close to BangkokThe steel Bridge on the River Kwai with its curved arches over the calm river in warm evening light, green trees on the bank and mountains in the backgroundKanchanaburi78 mm38 °C, 26 °C at nightBridge on the River Kwai and waterfallsHalf-moon bay with white sand and coconut palms on Koh Phangan, green hills behind, a longtail boat in the shallow turquoise waterKoh Phangan83 mm32 °C, 26 °C at nightQuiet bays, loud full moon nightsWhite sand beach with leaning coconut palms and turquoise sea, with a golden Buddha statue on a headland in the background on Koh SamuiKoh Samui83 mm32 °C, 26 °C at nightPalm island in the GulfThree small green islands joined by a white sandbar, surrounded by clear turquoise water at Koh TaoKoh Tao83 mm32 °C, 26 °C at nightSmall island for diversSandstone Khmer temple Phanom Rung in warm afternoon light, with green rice fields in front in northeastern ThailandIsan90 mm36 °C, 25 °C at nightKhmer temples and the MekongWat Arun on the Chao Phraya River in Bangkok at sunset, with a longtail boat on the water in frontBangkok91 mm35 °C, 27 °C at nightTemples, the river and street food stallsWhite Temple Wat Rong Khun with sparkling mirror decorations in calm morning light, a pond with a reflection in front and green hills behind in northern ThailandChiang Rai98 mm35 °C, 21 °C at nightWhite Temple and the Golden TriangleLong, almost empty sandy beach on the west coast of Koh Lanta in evening light, casuarinas and palms on the shore, a longtail boat in calm waterKoh Lanta119 mm34 °C, 25 °C at nightQuiet island off KrabiWhite sandy beach on Phuket with longtail boats in the turquoise water of the Andaman Sea, green hills behindPhuket143 mm34 °C, 26 °C at nightBeaches, old town and islandsTwo longtail boats in a turquoise bay with a white sandy beach, limestone cliffs and coral near Krabi and the Phi Phi IslandsKrabi & Phi Phi147 mm34 °C, 24 °C at nightLimestone cliffs and islands

rainy season 5 places

Over 150 millimetres, the rain shapes the day.

Quiet bay on Koh Chang with pale sandy beach, palms and turquoise water, steep, densely wooded mountains with clouds behind, a longtail boat in the shallow waterKoh Chang185 mm33 °C, 25 °C at nightGreen mountain island in the eastQuiet beach on Koh Kood with leaning coconut palms and a wooden jetty reaching into calm turquoise waterKoh Kood185 mm33 °C, 25 °C at nightQuiet island without a 7-ElevenClear turquoise shallow water and a white sandy beach on Koh Lipe, with longtail boats with colourful ribbons in front and a small island in the backgroundKoh Lipe206 mm34 °C, 24 °C at nightSmall island in the far southWide, quiet sandy beach at Khao Lak in the morning light, lined with casuarina trees and coconut palms, wooded hills behind, calm Andaman SeaKhao Lak210 mm34 °C, 24 °C at nightLong beaches north of PhuketFloating bamboo raft houses on the emerald-green Cheow Lan Lake, with steep limestone cliffs behind in the morning hazeKhao Sok210 mm34 °C, 24 °C at nightRainforest and Cheow Lan Lake

For places without a weather station of their own, the figures of the nearest station apply: Ayutthaya (Suphan Buri station), Khao Lak and Khao Sok (Takua Pa station), Koh Chang and Koh Kood (Trat station), Koh Lipe (Satun station), Koh Phangan and Koh Tao (Koh Samui station) and Pai (Mae Hong Son station). More places and every month in detail are on the weather page.

Festivals and public holidays in April

  • 6 April 2027Chakri DayPublic holiday, nationwideFounding of the Chakri dynasty.Banks closedOffices closed
  • 13 to 15 April 2027SongkranPublic holiday, nationwideThai New Year with a water festival. Water fights, buses and trains booked up, many road accidents.Banks closedOffices closed
  • 18 to 19 April 2027Wan LaiFestival, Pattaya and NakluaExtended Songkran with a big water fight. Beach Road closed.Date provisional

All dates of the year are in the festival calendar.

Frequently asked questions: Thailand in April

Where is it dry in Thailand in April?

3 of 20 places stay under 60 millimetres of rain in April: Hua Hin, Ayutthaya and Chiang Mai. It is changeable, meaning between 60 and 150 millimetres, in Pai, Pattaya, Kanchanaburi, Koh Phangan, Koh Samui, Koh Tao, Isan, Bangkok, Chiang Rai, Koh Lanta, Phuket and Krabi & Phi Phi.

How warm is it in Thailand in April?

By day the average ranges from 32 degrees in Koh Tao to 39 degrees in Pai. The coolest nights are in Chiang Rai, at an average of 21 degrees.

Is Thailand worth it in April despite the heat?

In the Gulf, yes: Koh Samui, Koh Phangan and Koh Tao have 32 degrees and 83 millimetres of rain. For temples inland, 36 to 39 degrees makes it hard going.

How the seasons are spread over the year is covered in the guide Best time to visit Thailand. All twelve months at a glance: the best time to visit overview. Also useful: the costs per day and the visa calculator.

Sources

  1. Thai Meteorological Department (TMD), climate averages 1981 to 2010, rounded
  2. The Nation: Bank of Thailand sets 18 bank holidays for 2027 (28 August 2026)
  3. Bank of Thailand: financial institutions’ holidays 2026
  4. Bank of Thailand Notification 37/2569: holidays 2027 (via tnews, 26 August 2026)
  5. Sanook: holidays 2027 (7 September 2026)
  6. myhora: Loy Krathong dates
  7. Full Moon Party Thailand: dates
  8. Straits Times: alcohol sales ban on Buddhist holidays
  9. The Nation: exemptions from the alcohol ban
  10. Surin Elephant Festival