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Monthly climate in Koh Tao, Surat Thani, Thailand

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Koh Tao features a tropical monsoon climate (Am).Temperatures typically range between 27 °C (81 °F) and 29 °C (84 °F) through the year, but rarely can drop to 24 °C (75 °F) or can rise to as high as 31 °C (89 °F).The average annual precipitation amounts to about 1794 mm (70.6 inches) and receives 205 rainy days on the 1 mm (0.04 inches) threshold annually.Koh Tao enjoys an average of 3621 hours of sunshine throughout the year, and daylight varies from 11 hours 31 minutes to 12 hours 41 minutes per day.

Monthly average temperatures in Koh Tao, Surat Thani, Thailand §

The warmest months in Koh Tao are April, May and June, with daily mean temperatures ranging from 28 to 29 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 27 to 27 °C (81 - 81 °F) throughout the day. On average each year, Koh Tao experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Koh Tao, Surat Thani, Thailand.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 28°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 31°C
(88°F)		 31°C
(89°F)		 31°C
(89°F)		 31°C
(88°F)		 31°C
(88°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(85°F)		 29°C
(85°F)
Mean maximum 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 31°C
(87°F)		 31°C
(87°F)		 30°C
(87°F)		 30°C
(87°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(85°F)		 29°C
(85°F)		 28°C
(84°F)
Average high 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(84°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(82°F)
Daily mean 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(82°F)		 27°C
(82°F)		 27°C
(81°F)
Average low 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(82°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 26°C
(80°F)		 27°C
(80°F)		 26°C
(79°F)
Mean minimum 25°C
(78°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)
Minimum 24°C
(76°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(75°F)

Compare climate in Koh Tao with other places

Compare temperature, precipitation, sunshine, UV index in Koh Tao, Surat Thani, Thailand with other places around the world.

Monthly average precipitation in Koh Tao, Surat Thani, Thailand §

Koh Tao usually has the most precipitation in September, October and November, with an average of 23 rainy days and 238 mm (9.4 inches) of precipitation per month.The driest months in Koh Tao are February, March and July. On average, 61 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Koh Tao, Surat Thani, Thailand.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 148 (5.8) 37 (1.5) 33 (1.3) 133 (5.3) 153 (6.0) 137 (5.4) 113 (4.4) 133 (5.2) 192 (7.6) 242 (9.5) 281 (11.0) 191 (7.5)
Average precipitation days (≥ 1 mm) 10 7 6 16 22 19 19 21 22 27 22 14

Monthly sunshine hours in Koh Tao, Surat Thani, Thailand §

The sunniest months in Koh Tao are March, April and May, when the sun shines an average of 10 hours 46 minutes a day.Least sunny months in Koh Tao: January, September and October receive an average of 8 hours 52 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Koh Tao, Surat Thani, Thailand.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 250 307 345 317 328 304 310 295 279 286 290 305
Mean daily daylight hours 11h 35m 11h 47m 12h 3m 12h 20m 12h 34m 12h 41m 12h 37m 12h 25m 12h 9m 11h 52m 11h 38m 11h 31m

Solar UV radiation in Koh Tao, Surat Thani, Thailand §

Koh Tao experiences the highest level of ultraviolet (UV) radiation in March, April and September, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure.January, November and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly Koh Tao UV Index data.

Average daily maximum UV levels by month for Koh Tao, Surat Thani, Thailand.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 11 14 15 15 14 14 14 14 14 13 11 11