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Weather & Air Quality
Pai's three seasons, burning season info and when to visit for the best weather.
Partially VerifiedLast verified August 1, 2026
Pai has a tropical climate with three distinct seasons. Understanding the weather helps you plan the perfect visit — and avoid the burning season smoke.
Seasons in Pai
Pai has three main seasons, each with its own character.
Cool seasonNovember-February, 15-28°C, pleasant, popular
Hot seasonMarch-May, 25-38°C, hot and dry
Rainy seasonJune-October, 22-32°C, lush, afternoon showers
Burning Season (March-April)
During March and April, farmers in northern Thailand burn crop waste, causing significant smoke and poor air quality. This is known as the burning season. Visibility can be very low and health may be affected. If you're sensitive to air pollution, consider visiting at a different time.
PeriodTypically March to April
Air qualityCan reach unhealthy levels (AQI 150+)
VisibilityMountains and viewpoints may be obscured
Practical Tips
- Check the air quality index (AQI) during March-April — burning season smoke can reach unhealthy levels.
- Bring a mask (N95) if visiting during burning season.
- The cool season (November-February) is the most popular time — book accommodation in advance.
- Rainy season (June-October) is beautiful and less crowded, but roads can be slippery.
- Download an air quality app like AQICN before visiting during burning season.
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