Thailand in January

Cool and dry nearly everywhere: the easiest month; book islands and Chiang Mai early.

• Bangkok and centre · Bangkok, Ayutthaya, Kanchanaburibest weather

  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, Paibest weather

  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 Lakbest weather

  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.

• Bangkok32° / 22°, 2 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.

• New Year

  31 Dec – 1 Jan

  Beach and island beds sell out; Bangkok roads and trains packed on 30 Dec and 2 Jan.

• New Year's Day and Children's Day check

  1 January; Children's Day on the second Saturday · Bangkok

  Offices close on 1 January; on Children's Day some government sites and army bases open to kids.

• Chinese New Year check

  Around 6 February in 2027 · Bangkok

  Yaowarat Road closes to traffic for lion dances and food stalls; many Chinatown shops shut for 3–5 days afterwards.

Crowds · Thailand

High

Prices · Thailand

High

High-price month: see what to book ahead.

Nothing unusual for the weather this month.

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Rated best or good this month

• Bangkok and centre

  Best weather of the year (Bangkok, Ayutthaya, Kanchanaburi)

• North

  Best weather of the year (Chiang Mai, Chiang Rai, Pai)

• Andaman coast

  Best weather of the year (Phuket, Krabi, Koh Lanta, Khao Lak)

• Bangkok

  Cool (for Bangkok) and dry; high season; smog on still days (check AQI).

• Chiang Mai

  Best months: Nov–Feb (cooler and dry)

• Phuket

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

• Pattaya

  Best months: Nov–Feb