Sea weather in Koh Tao in Thailand All the beach weather in Koh Tao

All the essential weather information for enjoying the beach in Koh Tao in Thailand, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Koh Tao over the next 7 days?

Discover the best moment to go to the beach in Koh Tao in Thailand this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Koh Tao. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Saturday 18 July 202676°F to 85°Fdiscouraged
Sunday 19 July 202674°F to 86°Fdiscouraged
Monday 20 July 202674°F to 86°Fdiscouraged
Tuesday 21 July 202676°F to 86°Fdiscouraged
Wednesday 22 July 202676°F to 86°Fdiscouraged
Thursday 23 July 202681°F to 83°Fdiscouraged
Friday 24 July 202681°F to 83°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Koh Tao

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 06:07 and will set at 18:46 on the beach(es) of Koh Tao. The outside temperature will be a high of 85°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 17.4mph km/h (with gusts up to 24.2mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)27°C (80°F)29°C (83°F)29°C (84°F)
Perceived temperature32°C (90°F)32°C (89°F)32°C (89°F)32°C (89°F)26°C (78°F)29°C (83°F)32°C (90°F)33°C (92°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%77%76%76%76%71%71%76%
Barometric pressure1011 hPa1009 hPa1010 hPa1011 hPa1011 hPa1008 hPa1008 hPa1011 hPa
Cloud cover12%8%11%21%9%9%9%7%
Heat index32°C (90°F)32°C (89°F)32°C (89°F)32°C (89°F)26°C (78°F)29°C (83°F)32°C (90°F)33°C (92°F)
Dew point24°C (75°F)24°C (74°F)23°C (74°F)23°C (74°F)20°C (67°F)21°C (69°F)23°C (73°F)24°C (76°F)
Wind
Speed27km/h (17mph)22km/h (14mph)17km/h (11mph)16km/h (10mph)13km/h (8mph)13km/h (8mph)15km/h (9mph)28km/h (17mph)
Gusts35km/h (22mph)30km/h (18mph)22km/h (14mph)21km/h (13mph)26km/h (16mph)27km/h (17mph)25km/h (16mph)39km/h (24mph)
Direction 293°
WNW
283°
WNW
276°
W
271°
W
231°
SW
181°
S
209°
SSW
284°
WNW
Wind chill28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)27°C (80°F)29°C (83°F)29°C (84°F)
Waves
Height0.6m (2.0ft)0.5m (1.5ft)0.3m (1.1ft)0.3m (0.9ft)0.3m (0.9ft)0.2m (0.6ft)0.1m (0.4ft)0.4m (1.4ft)
Direction 302°
WNW
306°
NW
306°
NW
303°
WNW
255°
WSW
254°
WSW
247°
WSW
292°
WNW
Period2.6 sec.2.6 sec.2.6 sec.2.6 sec.2.7 sec.2.4 sec.2.5 sec.2.5 sec.
Significant height0.7m (2.3ft)0.5m (1.6ft)0.3m (1ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1ft)0.2m (0.7ft)0.8m (2.6ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 06:08 and will set at 18:46 on the beach(es) of Koh Tao. The outside temperature will be a high of 86°F t and a low of 74°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 20.5mph km/h (with gusts up to 28.6mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)26°C (79°F)29°C (85°F)29°C (84°F)
Perceived temperature32°C (90°F)32°C (89°F)31°C (88°F)31°C (88°F)26°C (79°F)28°C (83°F)33°C (92°F)33°C (91°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%78%78%77%75%72%69%73%
Barometric pressure1011 hPa1009 hPa1010 hPa1012 hPa1011 hPa1008 hPa1008 hPa1011 hPa
Cloud cover7%28%45%30%2%2%5%18%
Heat index32°C (90°F)32°C (89°F)31°C (88°F)31°C (88°F)26°C (79°F)28°C (83°F)33°C (92°F)33°C (91°F)
Dew point24°C (75°F)24°C (75°F)23°C (74°F)23°C (74°F)19°C (67°F)21°C (70°F)23°C (73°F)23°C (74°F)
Wind
Speed28km/h (17mph)22km/h (14mph)17km/h (10mph)14km/h (9mph)13km/h (8mph)12km/h (8mph)21km/h (13mph)33km/h (20mph)
Gusts37km/h (23mph)30km/h (18mph)22km/h (14mph)18km/h (11mph)28km/h (17mph)25km/h (16mph)36km/h (23mph)46km/h (28mph)
Direction 291°
WNW
266°
W
270°
W
263°
W
246°
WSW
203°
SSW
270°
W
291°
WNW
Wind chill28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)26°C (79°F)29°C (85°F)29°C (84°F)
Waves
Height0.6m (2.0ft)0.5m (1.6ft)0.4m (1.2ft)0.3m (1.0ft)0.3m (1.0ft)0.2m (0.7ft)0.3m (1.0ft)0.8m (2.8ft)
Direction 303°
WNW
302°
WNW
301°
WNW
282°
WNW
250°
WSW
251°
WSW
281°
WNW
297°
WNW
Period2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.8 sec.2.7 sec.2.0 sec.2.0 sec.
Significant height0.7m (2.3ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.5m (1.6ft)0.3m (1ft)0.7m (2.3ft)1.0m (3.3ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 06:08 and will set at 18:46 on the beach(es) of Koh Tao. The outside temperature will be a high of 86°F t and a low of 74°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 21.1mph km/h (with gusts up to 28.6mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)26°C (79°F)30°C (85°F)29°C (84°F)
Perceived temperature32°C (90°F)31°C (88°F)31°C (88°F)31°C (88°F)26°C (79°F)28°C (83°F)34°C (93°F)33°C (91°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%76%77%77%75%72%69%75%
Barometric pressure1011 hPa1010 hPa1011 hPa1012 hPa1011 hPa1009 hPa1009 hPa1011 hPa
Cloud cover0%15%29%25%0%0%14%10%
Heat index32°C (90°F)31°C (88°F)31°C (88°F)31°C (88°F)26°C (79°F)28°C (83°F)34°C (93°F)33°C (91°F)
Dew point23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)19°C (67°F)21°C (69°F)23°C (74°F)24°C (75°F)
Wind
Speed25km/h (16mph)22km/h (14mph)19km/h (12mph)15km/h (10mph)16km/h (10mph)11km/h (7mph)27km/h (17mph)34km/h (21mph)
Gusts34km/h (21mph)30km/h (18mph)26km/h (16mph)21km/h (13mph)34km/h (21mph)23km/h (14mph)33km/h (20mph)46km/h (29mph)
Direction 283°
WNW
275°
W
262°
W
256°
WSW
238°
WSW
204°
SSW
281°
WNW
297°
WNW
Wind chill28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)26°C (79°F)30°C (85°F)29°C (84°F)
Waves
Height0.6m (2.1ft)0.5m (1.6ft)0.4m (1.3ft)0.3m (1.1ft)0.3m (0.9ft)0.2m (0.8ft)0.4m (1.4ft)0.8m (2.6ft)
Direction 296°
WNW
301°
WNW
301°
WNW
287°
WNW
261°
W
250°
WSW
275°
W
291°
WNW
Period2.0 sec.2.0 sec.2.0 sec.3.1 sec.3.0 sec.2.8 sec.2.8 sec.2.8 sec.
Significant height0.7m (2.3ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.9m (3ft)1.0m (3.3ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 06:08 and will set at 18:46 on the beach(es) of Koh Tao. The outside temperature will be a high of 86°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 19.9mph km/h (with gusts up to 28.6mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)26°C (79°F)30°C (85°F)29°C (83°F)
Perceived temperature32°C (90°F)32°C (89°F)31°C (88°F)31°C (89°F)26°C (79°F)28°C (83°F)34°C (93°F)33°C (91°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%78%77%77%76%73%69%75%
Barometric pressure1012 hPa1010 hPa1011 hPa1013 hPa1011 hPa1009 hPa1009 hPa1011 hPa
Cloud cover10%36%38%41%2%4%8%18%
Heat index32°C (90°F)32°C (89°F)31°C (88°F)31°C (89°F)26°C (79°F)28°C (83°F)34°C (93°F)33°C (91°F)
Dew point24°C (75°F)24°C (74°F)23°C (74°F)23°C (74°F)20°C (67°F)21°C (70°F)23°C (74°F)24°C (75°F)
Wind
Speed27km/h (17mph)19km/h (12mph)15km/h (9mph)19km/h (12mph)15km/h (9mph)11km/h (7mph)25km/h (15mph)32km/h (20mph)
Gusts36km/h (22mph)27km/h (16mph)21km/h (13mph)26km/h (16mph)32km/h (20mph)23km/h (14mph)30km/h (19mph)46km/h (29mph)
Direction 286°
WNW
275°
W
254°
WSW
249°
WSW
229°
SW
187°
S
283°
WNW
294°
WNW
Wind chill28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)24°C (75°F)26°C (79°F)30°C (85°F)29°C (83°F)
Waves
Height0.6m (2.0ft)0.5m (1.5ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1.1ft)0.2m (0.7ft)0.6m (2.0ft)0.8m (2.8ft)
Direction 294°
WNW
299°
WNW
281°
W
254°
WSW
248°
WSW
246°
WSW
303°
WNW
303°
WNW
Period2.8 sec.2.8 sec.2.8 sec.2.8 sec.2.8 sec.2.6 sec.2.5 sec.2.5 sec.
Significant height0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)0.3m (1ft)0.3m (1ft)1.1m (3.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 06:08 and will set at 18:46 on the beach(es) of Koh Tao. The outside temperature will be a high of 86°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 19.9mph km/h (with gusts up to 28.6mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (83°F)28°C (82°F)28°C (82°F)24°C (76°F)26°C (79°F)29°C (85°F)29°C (84°F)
Perceived temperature32°C (90°F)32°C (90°F)31°C (88°F)31°C (88°F)26°C (79°F)28°C (83°F)34°C (92°F)33°C (92°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%76%76%76%76%73%70%75%
Barometric pressure1012 hPa1010 hPa1011 hPa1012 hPa1011 hPa1008 hPa1008 hPa1010 hPa
Cloud cover10%27%32%37%7%10%14%12%
Heat index32°C (90°F)32°C (90°F)31°C (88°F)31°C (88°F)26°C (79°F)28°C (83°F)34°C (92°F)33°C (92°F)
Dew point24°C (75°F)24°C (74°F)23°C (74°F)23°C (74°F)20°C (67°F)21°C (70°F)23°C (74°F)24°C (75°F)
Wind
Speed24km/h (15mph)23km/h (14mph)21km/h (13mph)18km/h (11mph)16km/h (10mph)10km/h (6mph)32km/h (20mph)32km/h (20mph)
Gusts31km/h (20mph)30km/h (19mph)28km/h (18mph)24km/h (15mph)34km/h (21mph)22km/h (13mph)38km/h (24mph)46km/h (28mph)
Direction 277°
W
255°
WSW
264°
W
260°
W
227°
SW
202°
SSW
288°
WNW
289°
WNW
Wind chill28°C (83°F)28°C (83°F)28°C (82°F)28°C (82°F)24°C (76°F)26°C (79°F)29°C (85°F)29°C (84°F)
Waves
Height0.6m (2.1ft)0.5m (1.7ft)0.4m (1.4ft)0.4m (1.3ft)0.3m (1.1ft)0.2m (0.8ft)0.4m (1.2ft)0.7m (2.3ft)
Direction 296°
WNW
296°
WNW
275°
W
261°
W
253°
WSW
250°
WSW
271°
W
294°
WNW
Period2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.7 sec.2.7 sec.2.5 sec.2.5 sec.
Significant height0.7m (2.3ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.3m (1ft)0.6m (2ft)0.9m (3ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 06:08 and will set at 18:46 on the beach(es) of Koh Tao. The outside temperature will be a high of 83°F t and a low of 81°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 23.6mph km/h (with gusts up to 31.7mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (82°F)27°C (81°F)28°C (82°F)
Perceived temperature33°C (91°F)32°C (90°F)32°C (90°F)32°C (89°F)32°C (89°F)31°C (88°F)31°C (87°F)31°C (88°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%77%77%77%75%76%78%78%
Barometric pressure1011 hPa1010 hPa1010 hPa1011 hPa1010 hPa1008 hPa1008 hPa1010 hPa
Cloud cover27%41%42%40%43%48%44%40%
Heat index33°C (91°F)32°C (90°F)32°C (90°F)32°C (89°F)32°C (89°F)31°C (88°F)31°C (87°F)31°C (88°F)
Dew point24°C (75°F)24°C (75°F)24°C (75°F)24°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)
Wind
Speed25km/h (16mph)22km/h (14mph)21km/h (13mph)22km/h (14mph)26km/h (16mph)36km/h (22mph)38km/h (23mph)38km/h (23mph)
Gusts35km/h (22mph)30km/h (19mph)28km/h (17mph)29km/h (18mph)37km/h (23mph)51km/h (32mph)51km/h (32mph)51km/h (32mph)
Direction 271°
W
265°
W
259°
W
266°
W
285°
WNW
294°
WNW
294°
WNW
279°
W
Wind chill28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (82°F)27°C (81°F)28°C (82°F)
Waves
Height0.6m (2.0ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1.0ft)0.7m (2.3ft)0.9m (3.0ft)
Direction 294°
WNW
287°
WNW
273°
W
260°
W
254°
WSW
264°
W
297°
WNW
309°
NW
Period2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.9 sec.2.7 sec.2.6 sec.2.6 sec.
Significant height0.7m (2.3ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)0.5m (1.6ft)0.4m (1.3ft)0.8m (2.6ft)1.1m (3.6ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather on Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 06:09 and will set at 18:45 on the beach(es) of Koh Tao. The outside temperature will be a high of 83°F t and a low of 81°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 22.4mph km/h (with gusts up to 29.8mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)
Perceived temperature31°C (88°F)32°C (89°F)31°C (89°F)31°C (89°F)31°C (87°F)31°C (88°F)31°C (87°F)31°C (87°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%74%72%73%73%71%77%74%
Barometric pressure1010 hPa1009 hPa1009 hPa1009 hPa1009 hPa1007 hPa1008 hPa1009 hPa
Cloud cover67%74%53%55%56%52%46%57%
Heat index31°C (88°F)32°C (89°F)31°C (89°F)31°C (89°F)31°C (87°F)31°C (88°F)31°C (87°F)31°C (87°F)
Dew point23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)22°C (72°F)22°C (72°F)23°C (73°F)23°C (73°F)
Wind
Speed36km/h (23mph)27km/h (17mph)26km/h (16mph)30km/h (18mph)28km/h (17mph)24km/h (15mph)26km/h (16mph)25km/h (15mph)
Gusts48km/h (30mph)36km/h (22mph)35km/h (21mph)40km/h (25mph)39km/h (24mph)35km/h (21mph)34km/h (21mph)34km/h (21mph)
Direction 266°
W
273°
W
276°
W
275°
W
276°
W
271°
W
278°
W
281°
W
Wind chill28°C (82°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)
Waves
Height0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.6m (2.0ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)
Direction 300°
WNW
299°
WNW
300°
WNW
304°
WNW
306°
NW
314°
NW
316°
NW
305°
NW
Period2.6 sec.2.6 sec.2.6 sec.2.6 sec.2.6 sec.2.6 sec.2.6 sec.2.6 sec.
Significant height1.0m (3.3ft)0.9m (3ft)1.0m (3.3ft)0.9m (3ft)0.7m (2.3ft)1.1m (3.6ft)1.1m (3.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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