Sea weather in Ko Samet in Thailand All the beach weather in Ko Samet

All the essential weather information for enjoying the beach in Ko Samet 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 Ko Samet over the next 7 days?

Discover the best moment to go to the beach in Ko Samet in Thailand this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Ko Samet. 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 202679°F to 86°Frecommended
Sunday 19 July 202679°F to 86°Frecommended
Monday 20 July 202677°F to 85°Fdiscouraged
Tuesday 21 July 202679°F to 86°Fdiscouraged
Wednesday 22 July 202681°F to 86°Fdiscouraged
Thursday 23 July 202681°F to 85°Fdiscouraged
Friday 24 July 202679°F to 85°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Ko Samet

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 05:57 and will set at 18:44 on the beach(es) of Ko Samet. The outside temperature will be a high of 86°F t and a low of 79°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 11.2mph km/h (with gusts up to 18.6mph). 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)27°C (81°F)29°C (84°F)27°C (80°F)28°C (82°F)28°C (83°F)28°C (82°F)
Perceived temperature33°C (91°F)31°C (89°F)31°C (88°F)33°C (92°F)28°C (83°F)30°C (86°F)31°C (88°F)32°C (89°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity80%79%79%71%65%65%70%76%
Barometric pressure1010 hPa1008 hPa1009 hPa1010 hPa1010 hPa1007 hPa1007 hPa1009 hPa
Cloud cover15%22%16%17%5%8%6%23%
Heat index33°C (91°F)31°C (89°F)31°C (88°F)33°C (92°F)28°C (83°F)30°C (86°F)31°C (88°F)32°C (89°F)
Dew point24°C (76°F)24°C (75°F)23°C (74°F)23°C (74°F)20°C (67°F)21°C (69°F)22°C (72°F)23°C (74°F)
Wind
Speed18km/h (11mph)16km/h (10mph)13km/h (8mph)14km/h (9mph)14km/h (9mph)16km/h (10mph)14km/h (9mph)16km/h (10mph)
Gusts28km/h (17mph)25km/h (15mph)21km/h (13mph)18km/h (11mph)30km/h (19mph)30km/h (19mph)24km/h (15mph)26km/h (16mph)
Direction 242°
WSW
254°
WSW
258°
WSW
255°
WSW
237°
WSW
226°
SW
168°
SSE
194°
SSW
Wind chill28°C (83°F)28°C (82°F)27°C (81°F)29°C (84°F)27°C (80°F)28°C (82°F)28°C (83°F)28°C (82°F)
Waves
Height0.6m (2.1ft)0.6m (2.0ft)0.5m (1.5ft)0.4m (1.4ft)0.4m (1.4ft)0.4m (1.5ft)0.3m (1.1ft)0.4m (1.4ft)
Direction 228°
SW
231°
SW
224°
SW
223°
SW
232°
SW
227°
SW
218°
SW
206°
SSW
Period4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.
Significant height0.9m (3ft)0.7m (2.3ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)0.6m (2ft)0.4m (1.3ft)0.6m (2ft)
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 05:57 and will set at 18:44 on the beach(es) of Ko Samet. The outside temperature will be a high of 86°F t and a low of 79°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 11.2mph km/h (with gusts up to 17.4mph). 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)27°C (81°F)29°C (84°F)26°C (80°F)28°C (82°F)28°C (83°F)28°C (82°F)
Perceived temperature33°C (91°F)31°C (88°F)30°C (86°F)32°C (90°F)28°C (82°F)30°C (85°F)31°C (88°F)31°C (89°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%77%77%68%63%61%66%76%
Barometric pressure1009 hPa1008 hPa1009 hPa1011 hPa1010 hPa1008 hPa1007 hPa1010 hPa
Cloud cover14%11%7%10%3%3%4%17%
Heat index33°C (91°F)31°C (88°F)30°C (86°F)32°C (90°F)28°C (82°F)30°C (85°F)31°C (88°F)31°C (89°F)
Dew point24°C (76°F)23°C (74°F)23°C (73°F)22°C (72°F)19°C (66°F)20°C (67°F)21°C (70°F)23°C (74°F)
Wind
Speed16km/h (10mph)18km/h (11mph)17km/h (10mph)16km/h (10mph)18km/h (11mph)14km/h (9mph)13km/h (8mph)15km/h (9mph)
Gusts25km/h (15mph)28km/h (18mph)26km/h (16mph)21km/h (13mph)22km/h (13mph)26km/h (16mph)23km/h (14mph)24km/h (15mph)
Direction 232°
SW
250°
WSW
256°
WSW
253°
WSW
244°
WSW
237°
WSW
188°
S
191°
S
Wind chill28°C (83°F)28°C (82°F)27°C (81°F)29°C (84°F)26°C (80°F)28°C (82°F)28°C (83°F)28°C (82°F)
Waves
Height0.6m (1.9ft)0.6m (2.0ft)0.5m (1.8ft)0.5m (1.6ft)0.5m (1.7ft)0.4m (1.4ft)0.4m (1.2ft)0.4m (1.4ft)
Direction 220°
SW
227°
SW
231°
SW
234°
SW
241°
WSW
231°
SW
215°
SW
201°
SSW
Period4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.
Significant height0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.6m (2ft)0.7m (2.3ft)0.5m (1.6ft)0.5m (1.6ft)0.7m (2.3ft)
Sea water temperature
Water temperature30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 05:58 and will set at 18:43 on the beach(es) of Ko Samet. The outside temperature will be a high of 85°F t and a low of 77°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 13.1mph km/h (with gusts up to 19.3mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)27°C (81°F)27°C (80°F)29°C (84°F)26°C (79°F)28°C (82°F)28°C (83°F)28°C (82°F)
Perceived temperature32°C (90°F)30°C (86°F)30°C (85°F)33°C (91°F)27°C (81°F)30°C (85°F)32°C (90°F)32°C (89°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%77%78%71%63%61%72%76%
Barometric pressure1010 hPa1009 hPa1010 hPa1011 hPa1010 hPa1008 hPa1008 hPa1010 hPa
Cloud cover8%7%14%49%3%3%23%25%
Heat index32°C (90°F)30°C (86°F)30°C (85°F)33°C (91°F)27°C (81°F)30°C (85°F)32°C (90°F)32°C (89°F)
Dew point24°C (75°F)23°C (73°F)23°C (73°F)23°C (74°F)19°C (65°F)20°C (67°F)23°C (73°F)23°C (74°F)
Wind
Speed19km/h (12mph)19km/h (12mph)17km/h (11mph)20km/h (13mph)21km/h (13mph)15km/h (9mph)15km/h (9mph)16km/h (10mph)
Gusts31km/h (19mph)31km/h (19mph)27km/h (17mph)25km/h (16mph)24km/h (15mph)28km/h (17mph)22km/h (14mph)25km/h (16mph)
Direction 255°
WSW
267°
W
259°
W
247°
WSW
244°
WSW
233°
SW
187°
S
192°
SSW
Wind chill28°C (82°F)27°C (81°F)27°C (80°F)29°C (84°F)26°C (79°F)28°C (82°F)28°C (83°F)28°C (82°F)
Waves
Height0.6m (2.1ft)0.7m (2.3ft)0.6m (2.1ft)0.6m (2.0ft)0.6m (2.0ft)0.5m (1.5ft)0.4m (1.2ft)0.4m (1.3ft)
Direction 226°
SW
234°
SW
236°
SW
239°
WSW
239°
WSW
232°
SW
215°
SW
217°
SW
Period4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.
Significant height1.1m (3.6ft)1.0m (3.3ft)0.8m (2.6ft)0.8m (2.6ft)0.9m (3ft)0.6m (2ft)0.4m (1.3ft)0.6m (2ft)
Sea water temperature
Water temperature30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 05:58 and will set at 18:43 on the beach(es) of Ko Samet. The outside temperature will be a high of 86°F t and a low of 79°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 15.5mph km/h (with gusts up to 22.4mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)27°C (81°F)27°C (81°F)29°C (84°F)29°C (84°F)30°C (85°F)29°C (84°F)28°C (83°F)
Perceived temperature32°C (89°F)30°C (86°F)30°C (86°F)33°C (91°F)32°C (90°F)33°C (92°F)32°C (90°F)32°C (89°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%75%75%71%67%65%69%74%
Barometric pressure1011 hPa1009 hPa1010 hPa1012 hPa1011 hPa1008 hPa1008 hPa1010 hPa
Cloud cover5%12%40%51%18%38%27%33%
Heat index32°C (89°F)30°C (86°F)30°C (86°F)33°C (91°F)32°C (90°F)33°C (92°F)32°C (90°F)32°C (89°F)
Dew point24°C (74°F)22°C (72°F)22°C (72°F)23°C (74°F)22°C (72°F)22°C (72°F)23°C (73°F)23°C (74°F)
Wind
Speed23km/h (15mph)21km/h (13mph)18km/h (11mph)25km/h (15mph)24km/h (15mph)21km/h (13mph)19km/h (12mph)15km/h (9mph)
Gusts36km/h (22mph)33km/h (21mph)29km/h (18mph)32km/h (20mph)34km/h (21mph)28km/h (18mph)28km/h (17mph)24km/h (15mph)
Direction 268°
W
264°
W
258°
WSW
250°
WSW
250°
WSW
246°
WSW
243°
WSW
232°
SW
Wind chill28°C (82°F)27°C (81°F)27°C (81°F)29°C (84°F)29°C (84°F)30°C (85°F)29°C (84°F)28°C (83°F)
Waves
Height0.6m (2.0ft)0.7m (2.2ft)0.7m (2.2ft)0.6m (2.0ft)0.6m (1.9ft)0.5m (1.5ft)0.4m (1.2ft)0.4m (1.3ft)
Direction 242°
WSW
240°
WSW
238°
WSW
237°
WSW
234°
SW
230°
SW
214°
SW
213°
SSW
Period4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.
Significant height0.9m (3ft)0.9m (3ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)0.5m (1.6ft)0.4m (1.3ft)0.6m (2ft)
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 05:58 and will set at 18:43 on the beach(es) of Ko Samet. The outside temperature will be a high of 86°F t and a low of 81°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 14.9mph km/h (with gusts up to 23mph). 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)27°C (80°F)27°C (81°F)29°C (84°F)29°C (84°F)30°C (85°F)29°C (84°F)28°C (83°F)
Perceived temperature32°C (89°F)30°C (86°F)30°C (87°F)33°C (91°F)33°C (91°F)34°C (92°F)33°C (92°F)32°C (90°F)
Precipitation0in0.1in0in0in0in0in0in0in
Humidity75%81%79%71%71%68%74%76%
Barometric pressure1010 hPa1009 hPa1009 hPa1011 hPa1010 hPa1008 hPa1008 hPa1009 hPa
Cloud cover40%30%57%41%90%75%46%65%
Heat index32°C (89°F)30°C (86°F)30°C (87°F)33°C (91°F)33°C (91°F)34°C (92°F)33°C (92°F)32°C (90°F)
Dew point23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)24°C (75°F)24°C (75°F)
Wind
Speed23km/h (14mph)23km/h (14mph)20km/h (12mph)24km/h (15mph)24km/h (15mph)20km/h (13mph)14km/h (9mph)20km/h (12mph)
Gusts34km/h (21mph)37km/h (23mph)26km/h (16mph)30km/h (19mph)33km/h (20mph)27km/h (17mph)21km/h (13mph)33km/h (20mph)
Direction 243°
WSW
262°
W
260°
W
254°
WSW
254°
WSW
244°
WSW
224°
SW
243°
WSW
Wind chill28°C (83°F)27°C (80°F)27°C (81°F)29°C (84°F)29°C (84°F)30°C (85°F)29°C (84°F)28°C (83°F)
Waves
Height0.7m (2.4ft)0.7m (2.4ft)0.7m (2.2ft)0.6m (2.1ft)0.6m (2.1ft)0.5m (1.8ft)0.4m (1.3ft)0.3m (1.0ft)
Direction 234°
SW
238°
WSW
238°
WSW
241°
WSW
241°
WSW
226°
SW
213°
SSW
213°
SSW
Period4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.
Significant height1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.7m (2.3ft)0.5m (1.6ft)0.4m (1.3ft)
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)30°C (86°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 05:58 and will set at 18:43 on the beach(es) of Ko Samet. The outside temperature will be a high of 85°F t and a low of 81°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 19.3mph km/h (with gusts up to 28mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (83°F)29°C (84°F)28°C (83°F)28°C (82°F)28°C (82°F)
Perceived temperature32°C (89°F)31°C (88°F)31°C (88°F)32°C (90°F)33°C (91°F)32°C (90°F)32°C (89°F)31°C (87°F)
Precipitation0.1in0.1in0in0in0in0in0in0in
Humidity77%78%79%75%73%74%75%76%
Barometric pressure1009 hPa1008 hPa1008 hPa1009 hPa1008 hPa1007 hPa1007 hPa1009 hPa
Cloud cover59%66%63%44%67%64%55%75%
Heat index32°C (89°F)31°C (88°F)31°C (88°F)32°C (90°F)33°C (91°F)32°C (90°F)32°C (89°F)31°C (87°F)
Dew point23°C (74°F)23°C (74°F)24°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (73°F)
Wind
Speed26km/h (16mph)25km/h (16mph)25km/h (15mph)28km/h (17mph)30km/h (18mph)28km/h (18mph)31km/h (19mph)29km/h (18mph)
Gusts41km/h (26mph)39km/h (24mph)33km/h (21mph)36km/h (22mph)40km/h (25mph)42km/h (26mph)45km/h (28mph)42km/h (26mph)
Direction 257°
WSW
260°
W
260°
W
259°
WSW
259°
WSW
253°
WSW
254°
WSW
265°
W
Wind chill28°C (82°F)28°C (82°F)28°C (82°F)28°C (83°F)29°C (84°F)28°C (83°F)28°C (82°F)28°C (82°F)
Waves
Height0.5m (1.6ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2.0ft)
Direction 234°
SW
238°
WSW
239°
WSW
239°
WSW
238°
WSW
239°
WSW
244°
WSW
251°
WSW
Period4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.
Significant height0.8m (2.6ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)
Sea water temperature
Water temperature30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)

Sea weather on Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 05:59 and will set at 18:43 on the beach(es) of Ko Samet. The outside temperature will be a high of 85°F t and a low of 79°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 17.4mph km/h (with gusts up to 25.5mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)26°C (80°F)27°C (80°F)28°C (83°F)28°C (83°F)27°C (81°F)27°C (80°F)27°C (80°F)
Perceived temperature31°C (87°F)30°C (85°F)30°C (86°F)32°C (90°F)32°C (90°F)31°C (87°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%82%81%76%75%81%84%81%
Barometric pressure1008 hPa1008 hPa1008 hPa1008 hPa1007 hPa1006 hPa1006 hPa1007 hPa
Cloud cover95%63%71%87%82%66%56%66%
Heat index31°C (87°F)30°C (85°F)30°C (86°F)32°C (90°F)32°C (90°F)31°C (87°F)30°C (86°F)30°C (86°F)
Dew point23°C (73°F)23°C (74°F)23°C (74°F)24°C (74°F)24°C (74°F)23°C (74°F)24°C (74°F)23°C (74°F)
Wind
Speed27km/h (17mph)27km/h (17mph)25km/h (16mph)25km/h (15mph)28km/h (17mph)28km/h (17mph)27km/h (17mph)28km/h (17mph)
Gusts39km/h (24mph)38km/h (24mph)39km/h (24mph)34km/h (21mph)30km/h (19mph)37km/h (23mph)35km/h (21mph)41km/h (26mph)
Direction 268°
W
277°
W
267°
W
259°
W
255°
WSW
248°
WSW
246°
WSW
247°
WSW
Wind chill27°C (81°F)26°C (80°F)27°C (80°F)28°C (83°F)28°C (83°F)27°C (81°F)27°C (80°F)27°C (80°F)
Waves
Height0.6m (2.0ft)0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.8m (2.6ft)0.9m (3.0ft)0.9m (3.0ft)
Direction 255°
WSW
237°
WSW
235°
SW
243°
WSW
249°
WSW
247°
WSW
235°
SW
233°
SW
Period4.8 sec.4.6 sec.4.7 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.4.8 sec.
Significant height0.9m (3ft)1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.0m (3.3ft)1.2m (3.9ft)1.3m (4.3ft)1.2m (3.9ft)
Sea water temperature
Water temperature30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)30°C (86°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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