Very mild cool season or weather at Phuket Starts mid of October ends at mid of March. Celsius is like 25c-32c.The hint of starting cool weather at phuket,when moisture weather winds at phuket crash with cool winds arrives from china. This wind meeting create fog in Phuket for around for 2 days, on that time if you go to any mountains like Big Buddha mountain, feels like you are in some of the other places.
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Weather Phuket | Travel Phuket