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Weather in Koh Tao

Koh Tao is an island in the Gulf of Thailand that is one of the most popular tourist destinations in the country. The island is famous for its beautiful beaches, crystal clear waters and great weather. However, like any other region, Koh Tao has its own rainy season, which can affect the trip.

Rainy season in Koh Tao

The rainy season on Koh Tao starts in September and lasts until December. During this period, the island often experiences brief showers, which usually pass quickly. However, sometimes it can rain for several days in a row, which can affect the holiday.

When does the rainy season start in Koh Tao?

The rainy season on Koh Tao starts in mid-September and lasts until the end of December. Hurricanes and tropical storms are frequent on the island at this time, which can lead to heavy rain and winds. However, these phenomena do not occur often, and almost all the time in Koh Tao you can enjoy the beautiful weather.

High (dry) season in Koh Tao

The high season on Koh Tao lasts from February to April, when the island has the driest and warmest weather. At this time, the island is visited by a large number of tourists who want to enjoy the sun and swim in the warm water. Also during this period, various events, festivals and concerts are held on the island.

When is the best time to go to Koh Tao?

The best time to visit Koh Tao is from February to April, when the island has the driest and warmest weather. During this period, you can enjoy beautiful beaches, swim in crystal clear waters and spend time outdoors. However, if you are not afraid of a little rain, then you can visit the island at any time of the year.

Average monthly temperature,
°C day and night, water
Jan
+28
+27
+27
Feb
+28
+27
+28
Mar
+29
+28
+29
Apr
+30
+28
+30
May
+31
+29
+30
Jun
+31
+29
+30
Jul
+30
+28
+29
Aug
+30
+28
+29
Sep
+30
+28
+29
Oct
+29
+28
+29
Nov
+29
+28
+29
Dec
+29
+27
+28
January

In January, on Koh Tao, the average temperature during the day is about 28.6°C, and at night - 27.2°C. The water in the sea is pleasantly warm, around 27.8°C, which makes swimming in the sea very comfortable. Despite some humidity, the number of rainy days is not too high and averages 6 days per month.

Daytime weather
+28°
Weather at night
+27°
Water
+27°
February

In February, the temperature practically does not change, during the day it is about 28.8°C, and at night - 27.3°C. The temperature of the sea water rises slightly and is around 28.3°C. The number of rainy days in February is slightly reduced to 5 days.

Daytime weather
+28°
Weather at night
+27°
Water
+28°
March

In March the temperature continues to rise, with an average temperature of around 29.8°C during the day and 28.0°C at night. The water temperature also rises to 29.1°C. In March, Koh Tao usually has relatively few rainy days, with an average of 5 days per month.

Daytime weather
+29°
Weather at night
+28°
Water
+29°
April

In April, summer weather is already felt on Koh Tao, and the air temperature becomes even higher - about 30.8 ° C during the day, and 28.9 ° C at night. The water in the sea becomes even warmer and is around 30.1°C. In April, short showers are possible, so the number of rainy days rises to 7.

Daytime weather
+30°
Weather at night
+28°
Water
+30°
May

May is the beginning of the summer season on the island, when the air temperature reaches 31.5°C during the day and drops to 29.5°C at night. The sea temperature reaches 30.6°C, making it ideal for swimming and diving. During the month, 9 rainy days are expected, but the rains are usually short and pass quickly without interfering with rest.

Daytime weather
+31°
Weather at night
+29°
Water
+30°
June

June is the time when the air temperature on the island drops slightly, the average temperature during the day is about 31.2°C, and at night it drops to 29.1°C. The sea temperature also drops to 30.0°C, but it is still warm enough for comfortable swimming and diving. In June, 10 rainy days are expected on the island, which is slightly more than in May, but the rains are also short and do not affect the rest.

Daytime weather
+31°
Weather at night
+29°
Water
+30°
July

July is the month when air and sea water temperatures drop even more. The average temperature during the day is about 30.7°C, and at night it drops to 28.6°C. The sea temperature also drops to 29.5°C. There are also 10 rainy days expected in July, but this is not a hindrance for travelers who want to enjoy their holidays on the beautiful beaches of the island.

Daytime weather
+30°
Weather at night
+28°
Water
+29°
August

August is the month when the temperature of air and water in the sea is at about the same level as in July. The average temperature during the day is about 30.7°C, and at night it drops to 28.4°C. The number of rainy days is also reduced to 7 compared to the previous month.

Daytime weather
+30°
Weather at night
+28°
Water
+29°
September

In September, when summer ends, the daytime temperature averages 30.1°C, while at night the thermometer drops to 28.2°C. The sea temperature is pleasantly warm - 29.2°C, which makes it ideal for swimming and water sports. There can be up to 11 rainy days in September, but that doesn't stop you from enjoying your time on the beach.

Daytime weather
+30°
Weather at night
+28°
Water
+29°
October

With the onset of October, the temperature gradually begins to decrease, and on average the day becomes a little cooler - 29.9°C. However, the water remains warm and the temperature averages 29.1°C. At night, the thermometer also stays at a fairly high level - 28.2°C. The number of rainy days increases to 13, but sunny days still predominate.

Daytime weather
+29°
Weather at night
+28°
Water
+29°
November

In November, the period of transition to winter continues on Koh Tao. The daytime temperature drops another 0.1°C to 29.8°C, while at night the thermometer shows 28.3°C. The water temperature remains at the same level - 29.1°C. The number of rainy days reaches 16, but the island still attracts tourists with its beaches, boat trips and other outdoor activities.

Daytime weather
+29°
Weather at night
+28°
Water
+29°
December

In December, Ko Tao is noticeably cooler than in other months - the daytime temperature drops to 29.0°C, and at night it becomes even cooler - 27.6°C. The sea temperature also drops to 28.2°C. However, the rainfall drops to 9, making this month a good time to travel to the island for those who prefer a temperate climate.

Daytime weather
+29°
Weather at night
+27°
Water
+28°
Best Resorts
Average monthly temperature
+31°C afternoon, +25°C at night, +29°C water
Average monthly temperature
+31°C afternoon, +26°C at night, +29°C water
Average monthly temperature
+30°C afternoon, +28°C at night, +29°C water
Average monthly temperature
+31°C afternoon, +27°C at night, +29°C water
Average monthly temperature
+31°C afternoon, +28°C at night, +30°C water
Average monthly temperature
+30°C afternoon, +28°C at night, +29°C water