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Maya Bay (Ko Phi Phi Lee), Krabi, Thailand. Author Vincent. No Copyright
Maya Bay (Ko Phi Phi Lee), Krabi, Thailand. Author Vincent

Thailand climate: when to go to Thailand

Thailand, because of its great extent from north to south, has several climatic zones, most of the country is under the tropical monsoon climate, but the southern regions have typical characteristics of the equatorial climate, while in the northern mountainous areas the climate gradually becomes more temperate.

The climate of Thailand can be divided into two seasons, the rainy season extends from May to October, but that extends until November and December in the southern regions, and the dry season which includes the months between November and April. The rainfall is more abundant along the west coast.

Within these two seasons we found that the months between March and May are the hottest months of the year, while most of the rain is made ​​by the southwest monsoon, most of the precipitation falls in the afternoon, but during the rainy season sometimes it can rain for days.

Ko Nang Yuan, Thailand. Author Isderion. Licensed under the Creative Commons Attribution-Share Alike

Ko Nang Yuan, Thailand. Author Isderion

On average there are about 1,600 mm of rainfall throughout the country, but the southern coastal regions sometimes exceed 3,000 mm of precipitation a year, while the inland northern areas have 1,000 mm per year. The capital Bangkok, where the rainy season is from May to October, has an annual average of 1,500 mm of rain.

The mild temperatures undergo slight seasonal variations, in Bangkok, for example, have values ​​of average maximum temperatures of 35°C in the warmest month, and 31°C in the coldest month, also the average minimum temperatures vary little, between 26°C in April, and 21°C in December.

The islands along the west coast, overlooking the Andaman Sea, have constant temperatures throughout the year and heavy rains. In the island of Phuket, which is located in this area of ​​the country, the wettest period is from May to October, the average annual rainfall is over 2,200 mm.

Wat Chaiwatthanaram, Ayutthaya, Thailand. Author G2nfreeb. Licensed under the Creative Commons Attribution-Share Alike

Wat Chaiwatthanaram, Ayutthaya, Thailand. Author G2nfreeb

Along the east coast overlooking the Gulf of Thailand temperatures are constant throughout the year, but the amount of rainfall is lower than the west coast, for example on the island of Koh Samui, the average annual rainfall is 1,950 mm, the rains fall mostly between October and December, the driest months are between February and April.

The northern inland areas have a mild climate, with temperatures slightly lower, and less rainy of the rest of the country, in the city of Chiang Mai the rain falls mainly between May and October, while from November to April the climate is rather dry, average annual rainfall in Chiang Mai is just over 1,100 mm.

The temperature of the sea water in Thailand are great for swimming in any season, in fact vary between 28°C and 30°C.

WHEN TO GO TO THAILAND

The best time for a trip to Thailand are the months between mid-November and February, when the weather is milder, rainfall is less frequentand and humidity lower.

Climate of Ko Samui.

Climate of Phuket.

Climate of the Phi Phi Islands.

THAILAND CLIMATIC TABLES

BANGKOK (3 metres)
Month Average low (°C) Average high (°C) Precip. (mm) Precip. days
January 22,6 32,5 13,3  1,8
February 24,4 33,3 20,0  2,4
March 25,9 34,3 42,1  3,6
April 26,9 35,4 91,4  6,6
May 26,3 34,4 247,7  16,4
June 26,1 33,6 157,1  16,3
July 25,7 33,2 175,1  17,4
August 25,5 32,9 219,3  19,6
September 25,0 32,8 334,3  21,2
October 24,8 32,6 292,1  17,7
November 23,9 32,4 49,5  5,8
December 22,0 31,7 6,3  1,1
YEAR 24,9 33,3 1648,2  129,9

CHANG MAI (310 metres)
Month Average low (°C) Average high (°C) Precip. (mm) Precip. days
January 14,9 29,8 4,2  0,7
February 16,2 32,7 8,9  0,9
March 19,5 35,2 17,8  2,3
April 22,9 36,5 57,3  6,8
May 23,8 34,2 162,0  15,0
June 24,0 32,7 124,5  17,1
July 23,9 31,8 140,2  18,9
August 23,7 31,5 216,9  20,9
September 23,2 31,7 211,4  17,8
October 22,2 31,4 117,6  11,7
November 19,2 30,1 53,9  4,9
December 15,7 28,6 15,9  1,4
YEAR 20,8 32,2 1130,6  118,4
PHUKET (3 metres)
Month Average low (°C) Average high (°C) Precip. (mm) Precip. days
January 24,5 32,7 30,3  4,6
February 24,9 33,6 23,9  3,1
March 25,4 34,0 73,5  6,7
April 25,8 33,9 142,9  11,8
May 25,6 32,8 259,5  18,8
June 25,5 32,4 213,3  18,2
July 25,1 32,0 258,2  19,6
August 25,3 32,0 286,8  19,0
September 24,6 31,5 361,2  22,1
October 24,5 31,5 320,1  22,5
November 24,7 31,7 177,4  15,4
December 24,4 31,7 72,4  9,3
YEAR 25,0 32,5 2219,5  171,1

KO SAMUI (3 metres)
Month Average low (°C) Average high (°C) Precip. (mm) Precip. days
January 24,2 29,0 86,2  11,0
February 25,0 29,4 54,4  5,6
March 25,6 30,6 80,8  5,9
April 26,1 32,0 83,1  8,6
May 25,7 32,6 155,9  15,6
June 25,5 32,5 124,1  13,7
July 25,1 32,2 116,3  14,4
August 25,2 32,1 110,9  15,2
September 24,8 31,7 121,7  16,2
October 24,3 30,5 309,8  19,6
November 24,1 29,6 506,6  19,2
December 23,9 29,2 210,3  13,7
YEAR 25,0 31,0 1960,1  158,7

PHUKET
Month Sea Water Temperature °C
January 27
February 28
March 28
April 29
May 29
June 29
July 28
August 28
September 28
October 28
November 28
December 27

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