When to go · Pai

Pai in September

Avoid month. Listed as a month to avoid: Mar–Apr (smoke and heat), Aug–Sep (heaviest rain).

Key facts

Verdict: Avoid
Temperature: 30°C (86°F)86°F (30°C) / 21°C (70°F)70°F (21°C); average high / low
Rain days: 19
Crowds: Low; Thailand overall
Prices: Low; Thailand overall

Plan around it

Verdict

AvoidBest and avoid months for Pai

Listed as a month to avoid: Mar–Apr (smoke and heat), Aug–Sep (heaviest rain).

September is rated avoid. These months rate higher:

Long-term averages

PaiHighs around 30 °C (86 °F), lows around 21 °C (70 °F), rain on about 19 daysHighs around 86 °F (30 °C), lows around 70 °F (21 °C), rain on about 19 days
North, Thailand · 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.

Thailand overall: Wettest month in Bangkok and on the Andaman coast; flooding in low areas. Only for low prices.

Weather, crowds and prices for any two months in Pai, side by side.

First month

Second month

September: Listed as a month to avoid: Mar–Apr (smoke and heat), Aug–Sep (heaviest rain).

January: Inside Pai's best window: Nov–Feb (cool, dry, clear).

Pai: figures are long-term averages from this guide, not a forecast.