The climate of Ko Samui: when to go to Ko Samui

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Ko Samui is an island located in the Gulf of Siam, in the south-eastern part of Thailand about 9 degrees north of the equator. The climate of Ko Samui is monsoon tropical characterized by stable temperatures in all seasons with variations of a few degrees between the coldest and hottest months. This climate can be divided into a rainy season and a dry season.

The short dry season of Ko Samui’s climate runs from February to April. While the rainiest months are those between October and December. During the rest of the year the rains fall every day but only for a few tens of minutes. On average, almost 2,000 mm of rain per year fall on the island.

The island’s climate is hot and humid throughout the year. The average maximum temperatures vary between 29 ° C and 32 ° C. While the average minimum temperatures vary between 24 ° C and 26 ° C.

The sea water temperature on the island of Ko Samui is excellent for swimming in the sea at any time of the year.

WHEN TO GO TO KO SAMUI

The best time to travel to Ko Samui are the driest months between February and April. In addition to these, the months between January and September are also good, considering that in this period it rains generally only for a few tens of minutes every day.

Ang Thong National Park

KO SAMUI CLIMATE: CLIMATIC TABLES

KO SAMUI (3 meters)
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