Thailand in July

Western summer holidays lift Gulf island prices; the west coast stays rough.

• Bangkok and centre · Bangkok, Ayutthaya, Kanchanaburirainy

  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, Pairainy

  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 Lakrainy

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

• Gulf islands · Koh Samui, Koh Phangan, Koh Taofine

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

• Bangkok33° / 26°, 17 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.

• Asarnha Bucha + Khao Phansa

  July full moon (two days)

  Two alcohol-ban days; start of Buddhist Lent.

• Royal and memorial days

  28 Jul, 12 Aug, 13 Oct, 23 Oct, 5 Dec

  Public holidays; government offices closed, some roads closed for ceremonies.

• King Vajiralongkorn's birthday

  28 July · Bangkok

  Public holiday; yellow flags and portraits; royal events around Rattanakosin.

Crowds · Thailand

Medium

Prices · Thailand

Medium

• A rain jacket or umbrella and shoes that dry fast

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