Mid-December through early March. WeatherSpark identifies mid-December to early March as the optimal window for hot-weather activities in Phuket, with peak scores the first week of January through mid-February. Seas are calmest for island-hopping to Phi Phi, Similan, and Phang Nga Bay. Crowds peak at Christmas-New Year but the weather is reliably dry
| Month | High (°F) | Low (°F) | Notes |
|---|---|---|---|
| Jan | 84 | 77 | warm & changeable |
| Feb | 86 | 78 | hot & mostly dry |
| Mar | 87 | 79 | hot & changeable |
| Apr | 86 | 79 | hot & wet |
| May | 85 | 79 | hot & wet |
| Jun | 84 | 79 | warm & wet |
| Jul | 84 | 79 | warm & wet |
| Aug | 84 | 78 | warm & wet |
| Sep | 83 | 78 | warm & wet |
| Oct | 83 | 77 | warm & wet |
| Nov | 83 | 77 | warm & wet |
| Dec | 83 | 77 | warm & changeable |