Phuket weather by month
Phuket weather by month is all about rain: 31 mm in January against 408 mm in September, while the day stays near 32 °C all year.
Phuket in November, daytime high
32 °C
| Night low | 23 °C |
| Sea surface | 29 °C |
| Rain in the month | 219 mm |
| Days with 1 mm or more | 16 days |
| Daylight | 11 h 48 min |
| October, daytime high | 31 °C |
| December, daytime high | 31 °C |
Averages 1991 to 2020 at Phuket International Airport. A typical month, not a forecast. Method.
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Phuket is Thailand's largest island, on the Andaman Sea coast in the south-west of the country. Like most of the tropics, it does not have a warm and a cold season so much as a dry and a wet one. Our figures come from Phuket International Airport, in the north of the island, averaged over 1991 to 2020. The temperature hardly moves: the daytime high runs from 31 °C in September to 34 °C in March, and the night from 23 °C to 24 °C. The sea is just as constant, 28 °C to 30 °C. The rain is what changes. From December to February the island is dry, with 4 days of rain in January and 3 days in February. From May the south-west monsoon sets in, and from May to October rain falls on 18 to 22 days a month, with the heaviest totals in September, at 408 mm.
Phuket weather by month: dry and wet seasons
| Month | Daytime high | Night low | Sea | Rain | Wet days | Daylight |
|---|---|---|---|---|---|---|
| January | 32 °C | 23 °C | 28 °C | 31 mm | 4 days | 11 h 42 min |
| February | 33 °C | 23 °C | 29 °C | 34 mm | 3 days | 11 h 54 min |
| March | 34 °C | 24 °C | 29 °C | 115 mm | 7 days | 12 h 06 min |
| April | 34 °C | 24 °C | 30 °C | 109 mm | 9 days | 12 h 18 min |
| May | 33 °C | 24 °C | 30 °C | 278 mm | 18 days | 12 h 30 min |
| June | 32 °C | 24 °C | 30 °C | 289 mm | 18 days | 12 h 36 min |
| July | 32 °C | 24 °C | 30 °C | 285 mm | 19 days | 12 h 30 min |
| August | 31 °C | 24 °C | 30 °C | 403 mm | 19 days | 12 h 24 min |
| September | 31 °C | 24 °C | 29 °C | 408 mm | 21 days | 12 h 12 min |
| October | 31 °C | 24 °C | 29 °C | 365 mm | 22 days | 11 h 54 min |
| November | 32 °C | 23 °C | 29 °C | 219 mm | 16 days | 11 h 48 min |
| December | 31 °C | 23 °C | 29 °C | 75 mm | 7 days | 11 h 42 min |
Best time to visit Thailand's west coast
In Phuket the months with 8 wet days or fewer are December to March. That is the peak season for the beaches of Phuket, Krabi and Khao Lak. March and April are the hottest months, 34 °C and 34 °C, and wetter than January. In the wet season, rain often comes as heavy showers rather than all-day rain, but the sea is rougher on the west coast and some beaches fly red flags.
Phuket or Koh Samui
The two islands have opposite calendars. Koh Samui, in the Gulf of Thailand, gets its heaviest rain at the end of the year: 447 mm in November, against 219 mm in Phuket. In July and August, when Phuket has 19 days and 19 days of rain, Koh Samui has 12 days and 13 days. For a British summer holiday in Thailand, the Gulf side is the better bet; for Christmas and New Year, the Andaman side. To set the two side by side for any month, use the comparison tool.