Koh Phi Phi in September
Not the best time
Monsoon season starts winding down but conditions are still pretty miserable. You might catch some decent weather toward the end of the month.
Weather
Late monsoon brings continued heavy rain but storms become more intermittent. Seas remain rough and humidity stays high around 85%.
31°C high24°C low18 rain days
Crowds & Cost
low crowds
~$45/day average
September Tips
- •Weather starts showing signs of improvement toward month's end
- •Book accommodations with good drainage - flooding can be an issue
- •Mosquitoes are worst this month - pack strong repellent
All Months
November through April is your sweet spot — dry skies, calm seas, and temperatures that hover around 30°C. December and January are peak season, which means higher prices but also the best weather for boat trips. The monsoon hits hard from May to October, and I mean hard. Boats to Maya Bay get cancelled, some restaurants close, and accommodation drops to half price for good reason. But here's a contrarian take: late October can be brilliant if you time it right between storm systems. You'll have the islands mostly to yourself. Just check the weather forecast obsessively and have backup plans.
Koh Phi Phi Scores
Solo
8/10
Couples
8/10
Families
5/10
Adventure
7/10
Budget
6/10
Luxury
6/10
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