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Chiang Mai in April

April is the most extreme month in Chiang Mai — Songkran transforms the old city into Thailand's most legendary water fight zone, while the hot-season haze peaks with air quality that can be poor in early April. A visit for Songkran is unforgettable; a general sightseeing trip in April is not ideal.

Weather in Chiang Mai in April

Hot and hazy. Temperatures 33–40°C with significant haze from agricultural burning. Air quality can be poor (AQI 100–200+) in early April before Songkran. Some rain begins in the second half of April as pre-monsoon storms arrive.

Crowds & Prices

Songkran (13–15 April) makes Chiang Mai's old city one of the world's biggest water fights. The moat road and Tha Phae Gate area are packed with locals and tourists. Thai families return home for the holiday, creating traffic and accommodation pressure.

Best Things to Do in April

  • 1Songkran water festival at the old city moat — the best Songkran celebration in Thailand
  • 2Wat Phra Singh and other temples for Songkran merit-making ceremonies
  • 3Sand pagoda building in temple courtyards
  • 4Night markets — cooler evenings make these more bearable than daytime
  • 5Indoor cooking classes and spa treatments during peak heat hours
  • 6Doi Suthep — early morning visits before heat peaks

Travel Tips for April

  • Monitor the AQI (IQAir or AirVisual app) before arriving — if above 150, consider delaying.

  • For Songkran, stay on or near the old city moat road.

  • Songkran runs 13–15 April officially, but Chiang Mai's celebrations extend to around 17 April.

  • Book accommodation 3 months ahead for 12–18 April.

  • Carry all electronics in waterproof bags during Songkran.

Disclaimer

Weather conditions can vary from year to year. Always check forecasts closer to your departure date.

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