The short answer
When to go to Pai
The best window is November to February, when mornings are cool, rainfall is low and the hills are green. March and April are hot, and regional burning is commonly reported to affect air quality, though we have not verified levels for Pai. The rainy season from May to October brings landslide and flood risk on hill roads, and August is the wettest month. The climate figures come from the Mae Hong Son station in the same province at a lower altitude, so Pai itself may be a little cooler. Older travellers should avoid the wet months because of the winding road.
Month by month
Pai weather by month
| Month | High | Low | Rain | Verdict | What to expect |
|---|---|---|---|---|---|
| January | 30°C | 15°C | 11 mm | Cool mornings, dry and clear; the most comfortable month | |
| February | 33°C | 15°C | 6 mm | Dry and warming; smoke from burning can start late in the month | |
| March | 37°C | 18°C | 19 mm | Hot and dry; regional burning commonly reported, check air quality | |
| April | 39°C | 23°C | 60 mm | Hottest month; heat and Songkran crowds | |
| May | 36°C | 24°C | 169 mm | Rains begin; hot and humid | |
| June | 34°C | 24°C | 180 mm | Green and wet; showers most days | |
| July | 32°C | 24°C | 226 mm | Very wet; landslides can affect hill roads | |
| August | 32°C | 24°C | 259 mm | Wettest month; road and river risks | |
| September | 33°C | 23°C | 201 mm | Still wet; waterfalls full, roads can be slick | |
| October | 33°C | 22°C | 117 mm | Rains ease; green countryside | |
| November | 31°C | 19°C | 40 mm | Fresh, mostly dry; the season opens | |
| December | 29°C | 16°C | 11 mm | Cool, dry and clear; busy and pleasant |
Temperatures and rainfall are long-term monthly averages. Check the forecast a few days before you travel.
Seasons at a glance
Pai seasons for families and seniors
The easiest months: January, November and December
- January: Cool mornings, dry and clear; the most comfortable month
- November: Fresh, mostly dry; the season opens
- December: Cool, dry and clear; busy and pleasant
Good, with small trade-offs: February
- February: Dry and warming; smoke from burning can start late in the month
Possible, with planning: May, June, July, September and October
- May: Rains begin; hot and humid
- June: Green and wet; showers most days
- July: Very wet; landslides can affect hill roads
- September: Still wet; waterfalls full, roads can be slick
- October: Rains ease; green countryside
Best avoided with parents or children: March, April and August
- March: Hot and dry; regional burning commonly reported, check air quality
- April: Hottest month; heat and Songkran crowds
- August: Wettest month; road and river risks
Useful answers
Best time to visit Pai: FAQs
What is the best month to visit Pai?
January, November and December are the best months to visit Pai, with February also good. The best window is November to February, when mornings are cool, rainfall is low and the hills are green. March and April are hot, and regional burning is commonly reported to affect air quality, though we have not verified levels for Pai. The rainy season from May to October brings landslide and flood risk on hill roads, and August is the wettest month. The climate figures come from the Mae Hong Son station in the same province at a lower altitude, so Pai itself may be a little cooler. Older travellers should avoid the wet months because of the winding road.
Which months should I avoid in Pai with elderly parents?
March, April and August are the months to avoid with older travellers. Hot and dry; regional burning commonly reported, check air quality Hottest month; heat and Songkran crowds
When does it rain most in Pai?
August is the wettest month, with about 259 mm of rain on average. The hottest month is April, with average highs around 39°C.