Thailand in April

Hottest month; Songkran (13–15 Apr) soaks everyone and fills transport — plan around it or join in.

• Bangkok and centre · Bangkok, Ayutthaya, Kanchanaburihot

  Cool season Nov–Feb is the easy window; April reaches 38 °C; September and October bring street flooding in short bursts.

• North · Chiang Mai, Chiang Rai, Paismoke haze

  Cool nights Dec–Jan; the burning season (Feb–Apr) puts air quality among the worst in Asia — check AQI before booking.

• Andaman coast · Phuket, Krabi, Koh Lanta, Khao Lakhot

  Southwest monsoon May–Oct: rough seas, red-flag beaches, and the Similan and Surin parks closed.

• Gulf islands · Koh Samui, Koh Phangan, Koh Taobest weather

  Opposite rhythm: dry and calm Feb–Sep, wettest Oct–Dec when ferries can cancel.

• Bangkok35° / 27°, 6 rain days

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

• Songkran (Thai New Year) big impact

  13–15 Apr

  Nationwide water fights; transport out of Bangkok sells out; many shops close; phones and passports need waterproof bags.

• Chakri Day

  6 April · Bangkok

  Public holiday; royal ceremonies can close parts of the old city.

Crowds · Thailand

High

Prices · Thailand

High

High-price month: see what to book ahead.

• Light, breathable clothes, a sun hat and sunscreen

Build the full packing list for your trip →

Rated best or good this month

• Gulf islands

  Best weather of the year (Koh Samui, Koh Phangan, Koh Tao)

• Phuket

  Best months: Nov–Apr (dry season, calm seas)

Better another month

• Bangkok

  Hottest; Songkran 13–15 Apr: water fights, closures, sold-out transport.