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

All the essential weather information for enjoying the beach in Koh Lanta 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 Lanta over the next 7 days?

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

Date Outside temp. Our opinion
Monday 20 July 202683°F to 85°Frecommended
Tuesday 21 July 202681°F to 85°Frecommended
Wednesday 22 July 202683°F to 85°Frecommended
Thursday 23 July 202681°F to 85°Fdiscouraged
Friday 24 July 202679°F to 83°Fdiscouraged
Saturday 25 July 202681°F to 83°Fdiscouraged
Sunday 26 July 202681°F to 83°Fdiscouraged

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

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 06:15 and will set at 18:45 on the beach(es) of Koh Lanta. The outside temperature will be a high of 85°F t and a low of 83°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 16.8mph). Wave height will be up to 1ft 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)29°C (84°F)29°C (83°F)29°C (84°F)29°C (84°F)28°C (83°F)
Perceived temperature32°C (90°F)32°C (90°F)31°C (88°F)33°C (91°F)32°C (89°F)32°C (90°F)33°C (91°F)32°C (90°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%78%74%71%70%67%73%74%
Barometric pressure1012 hPa1010 hPa1011 hPa1012 hPa1012 hPa1010 hPa1010 hPa1012 hPa
Cloud cover39%61%74%53%80%18%44%15%
Heat index32°C (90°F)32°C (90°F)31°C (88°F)33°C (91°F)32°C (89°F)32°C (90°F)33°C (91°F)32°C (90°F)
Dew point23°C (74°F)24°C (75°F)23°C (73°F)23°C (74°F)22°C (72°F)22°C (72°F)23°C (74°F)23°C (74°F)
Wind
Speed17km/h (10mph)17km/h (10mph)18km/h (11mph)16km/h (10mph)15km/h (10mph)17km/h (11mph)17km/h (11mph)18km/h (11mph)
Gusts24km/h (15mph)24km/h (15mph)26km/h (16mph)21km/h (13mph)23km/h (14mph)25km/h (15mph)25km/h (15mph)27km/h (17mph)
Direction 289°
WNW
301°
WNW
302°
WNW
294°
WNW
289°
WNW
274°
W
263°
W
270°
W
Wind chill28°C (83°F)28°C (83°F)28°C (82°F)29°C (84°F)29°C (83°F)29°C (84°F)29°C (84°F)28°C (83°F)
Waves
Height0.3m (1.0ft)0.3m (0.9ft)0.3m (1.0ft)0.3m (0.9ft)0.2m (0.8ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)
Direction 274°
W
276°
W
280°
W
279°
W
278°
W
248°
WSW
270°
W
267°
W
Period6.5 sec.6.5 sec.6.5 sec.6.6 sec.6.7 sec.6.8 sec.6.8 sec.6.7 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)
Sea water temperature
Water temperature28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 06:15 and will set at 18:45 on the beach(es) of Koh Lanta. The outside temperature will be a high of 85°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 11.8mph km/h (with gusts up to 18mph). Wave height will be up to 1ft 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)29°C (84°F)29°C (83°F)27°C (80°F)28°C (83°F)29°C (83°F)
Perceived temperature32°C (90°F)32°C (90°F)32°C (89°F)33°C (91°F)32°C (89°F)29°C (84°F)31°C (88°F)32°C (90°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%74%76%72%70%69%71%73%
Barometric pressure1012 hPa1010 hPa1011 hPa1013 hPa1011 hPa1009 hPa1010 hPa1012 hPa
Cloud cover15%52%73%61%33%9%13%11%
Heat index32°C (90°F)32°C (90°F)32°C (89°F)33°C (91°F)32°C (89°F)29°C (84°F)31°C (88°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)21°C (69°F)22°C (72°F)23°C (74°F)
Wind
Speed17km/h (11mph)15km/h (10mph)16km/h (10mph)13km/h (8mph)12km/h (7mph)13km/h (8mph)16km/h (10mph)19km/h (12mph)
Gusts25km/h (15mph)22km/h (14mph)24km/h (15mph)17km/h (10mph)17km/h (11mph)26km/h (16mph)27km/h (17mph)29km/h (18mph)
Direction 273°
W
280°
W
301°
WNW
303°
WNW
287°
WNW
260°
W
255°
WSW
265°
W
Wind chill28°C (83°F)28°C (83°F)28°C (82°F)29°C (84°F)29°C (83°F)27°C (80°F)28°C (83°F)29°C (83°F)
Waves
Height0.2m (0.8ft)0.2m (0.8ft)0.2m (0.7ft)0.2m (0.6ft)0.2m (0.6ft)0.2m (0.7ft)0.3m (0.9ft)0.3m (1.0ft)
Direction 271°
W
277°
W
247°
WSW
247°
WSW
247°
WSW
247°
WSW
261°
W
264°
W
Period6.7 sec.6.8 sec.7.1 sec.7.2 sec.7.1 sec.7.0 sec.7.0 sec.7.0 sec.
Significant height0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.3m (1ft)0.4m (1.3ft)0.4m (1.3ft)0.5m (1.6ft)0.5m (1.6ft)
Sea water temperature
Water temperature28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 06:15 and will set at 18:45 on the beach(es) of Koh Lanta. The outside temperature will be a high of 85°F t and a low of 83°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 12.4mph km/h (with gusts up to 18mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (83°F)28°C (83°F)28°C (83°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)
Perceived temperature33°C (91°F)32°C (90°F)32°C (90°F)33°C (92°F)33°C (91°F)33°C (91°F)33°C (92°F)33°C (92°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity76%77%75%76%72%72%74%75%
Barometric pressure1012 hPa1010 hPa1011 hPa1012 hPa1012 hPa1009 hPa1009 hPa1011 hPa
Cloud cover39%85%78%65%49%78%32%15%
Heat index33°C (91°F)32°C (90°F)32°C (90°F)33°C (92°F)33°C (91°F)33°C (91°F)33°C (92°F)33°C (92°F)
Dew point24°C (75°F)24°C (75°F)23°C (74°F)24°C (75°F)23°C (74°F)23°C (74°F)24°C (75°F)24°C (75°F)
Wind
Speed18km/h (11mph)17km/h (11mph)17km/h (11mph)16km/h (10mph)16km/h (10mph)17km/h (11mph)19km/h (12mph)20km/h (12mph)
Gusts26km/h (16mph)25km/h (16mph)29km/h (18mph)22km/h (14mph)23km/h (14mph)24km/h (15mph)27km/h (17mph)29km/h (18mph)
Direction 276°
W
280°
W
286°
WNW
286°
WNW
278°
W
267°
W
265°
W
270°
W
Wind chill29°C (83°F)28°C (83°F)28°C (83°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)29°C (84°F)
Waves
Height0.3m (1.1ft)0.3m (1.1ft)0.4m (1.2ft)0.3m (1.1ft)0.3m (1.1ft)0.4m (1.2ft)0.4m (1.4ft)0.4m (1.5ft)
Direction 270°
W
269°
W
266°
W
247°
WSW
247°
WSW
275°
W
267°
W
271°
W
Period7.1 sec.7.7 sec.7.7 sec.7.5 sec.7.4 sec.7.2 sec.7.2 sec.7.2 sec.
Significant height0.5m (1.6ft)0.6m (2ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)
Sea water temperature
Water temperature28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 06:15 and will set at 18:45 on the beach(es) of Koh Lanta. 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 15.5mph km/h (with gusts up to 21.8mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature29°C (83°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (83°F)28°C (83°F)
Perceived temperature33°C (92°F)33°C (91°F)32°C (89°F)32°C (90°F)31°C (87°F)32°C (90°F)32°C (90°F)32°C (90°F)
Precipitation0in0in0in0in0in0.1in0in0in
Humidity77%79%78%78%76%75%76%75%
Barometric pressure1011 hPa1009 hPa1010 hPa1011 hPa1011 hPa1009 hPa1009 hPa1011 hPa
Cloud cover67%68%76%72%88%60%58%58%
Heat index33°C (92°F)33°C (91°F)32°C (89°F)32°C (90°F)31°C (87°F)32°C (90°F)32°C (90°F)32°C (90°F)
Dew point24°C (75°F)24°C (75°F)24°C (75°F)24°C (75°F)23°C (73°F)23°C (74°F)24°C (74°F)23°C (74°F)
Wind
Speed18km/h (11mph)19km/h (12mph)20km/h (13mph)17km/h (11mph)18km/h (11mph)22km/h (14mph)23km/h (15mph)25km/h (15mph)
Gusts26km/h (16mph)28km/h (17mph)30km/h (18mph)24km/h (15mph)32km/h (20mph)32km/h (20mph)30km/h (19mph)35km/h (22mph)
Direction 284°
WNW
285°
WNW
283°
WNW
275°
W
284°
WNW
286°
WNW
295°
WNW
310°
NW
Wind chill29°C (83°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (83°F)28°C (83°F)
Waves
Height0.4m (1.3ft)0.5m (1.5ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.7ft)0.7m (2.2ft)0.6m (2.1ft)0.6m (2.1ft)
Direction 245°
WSW
270°
W
261°
W
258°
WSW
263°
W
266°
W
289°
WNW
303°
WNW
Period5.5 sec.5.5 sec.5.5 sec.5.5 sec.5.5 sec.5.5 sec.4.1 sec.5.6 sec.
Significant height0.6m (2ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.9m (3ft)1.0m (3.3ft)1.0m (3.3ft)
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 Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 06:15 and will set at 18:45 on the beach(es) of Koh Lanta. The outside temperature will be a high of 83°F t and a low of 79°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 18.6mph km/h (with gusts up to 27.3mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)26°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)
Perceived temperature32°C (90°F)32°C (89°F)31°C (89°F)32°C (89°F)29°C (85°F)29°C (85°F)30°C (87°F)30°C (86°F)
Precipitation0in0in0.1in0in0in0in0in0in
Humidity76%77%78%76%80%77%76%78%
Barometric pressure1011 hPa1008 hPa1009 hPa1010 hPa1010 hPa1008 hPa1008 hPa1010 hPa
Cloud cover82%65%73%74%52%100%60%86%
Heat index32°C (90°F)32°C (89°F)31°C (89°F)32°C (89°F)29°C (85°F)29°C (85°F)30°C (87°F)30°C (86°F)
Dew point24°C (74°F)23°C (74°F)24°C (74°F)23°C (74°F)23°C (73°F)22°C (72°F)23°C (73°F)23°C (73°F)
Wind
Speed24km/h (15mph)22km/h (14mph)22km/h (14mph)25km/h (16mph)30km/h (19mph)16km/h (10mph)22km/h (13mph)28km/h (17mph)
Gusts33km/h (21mph)31km/h (19mph)34km/h (21mph)35km/h (22mph)44km/h (28mph)23km/h (14mph)31km/h (19mph)39km/h (24mph)
Direction 307°
NW
307°
NW
306°
NW
300°
WNW
285°
WNW
291°
WNW
301°
WNW
305°
NW
Wind chill28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)26°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)
Waves
Height0.5m (1.7ft)0.6m (1.9ft)0.7m (2.5ft)0.6m (2.1ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2.0ft)
Direction 244°
WSW
302°
WNW
315°
NW
300°
WNW
284°
WNW
272°
W
269°
W
280°
W
Period5.6 sec.5.6 sec.5.6 sec.5.5 sec.5.4 sec.5.4 sec.5.5 sec.5.5 sec.
Significant height0.8m (2.6ft)1.0m (3.3ft)1.1m (3.6ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)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 Saturday 25 July 2026

On Saturday 25 July 2026, the sun will rise at 06:16 and will set at 18:45 on the beach(es) of Koh Lanta. The outside temperature will be a high of 83°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 15.5mph km/h (with gusts up to 20.5mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)27°C (80°F)27°C (81°F)28°C (82°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)
Perceived temperature30°C (86°F)30°C (85°F)30°C (86°F)31°C (88°F)31°C (89°F)31°C (88°F)31°C (88°F)31°C (88°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%79%78%75%75%78%79%77%
Barometric pressure1010 hPa1009 hPa1009 hPa1010 hPa1009 hPa1008 hPa1008 hPa1010 hPa
Cloud cover96%68%32%29%61%51%38%52%
Heat index30°C (86°F)30°C (85°F)30°C (86°F)31°C (88°F)31°C (89°F)31°C (88°F)31°C (88°F)31°C (88°F)
Dew point23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (74°F)24°C (74°F)23°C (74°F)
Wind
Speed25km/h (15mph)19km/h (12mph)17km/h (11mph)18km/h (11mph)19km/h (12mph)21km/h (13mph)21km/h (13mph)18km/h (11mph)
Gusts33km/h (21mph)27km/h (17mph)24km/h (15mph)26km/h (16mph)26km/h (16mph)30km/h (18mph)30km/h (19mph)27km/h (17mph)
Direction 308°
NW
303°
WNW
299°
WNW
290°
WNW
290°
WNW
292°
WNW
296°
WNW
292°
WNW
Wind chill27°C (80°F)27°C (80°F)27°C (81°F)28°C (82°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)
Waves
Height0.7m (2.3ft)0.6m (2.0ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2.0ft)0.8m (2.6ft)0.7m (2.3ft)0.5m (1.6ft)
Direction 295°
WNW
296°
WNW
263°
W
248°
WSW
267°
W
269°
W
267°
W
253°
WSW
Period5.4 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.
Significant height0.9m (3ft)0.8m (2.6ft)0.6m (2ft)0.6m (2ft)0.8m (2.6ft)1.0m (3.3ft)0.8m (2.6ft)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 Sunday 26 July 2026

On Sunday 26 July 2026, the sun will rise at 06:16 and will set at 18:45 on the beach(es) of Koh Lanta. The outside temperature will be a high of 83°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 18.6mph km/h (with gusts up to 23.6mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)27°C (81°F)27°C (81°F)
Perceived temperature32°C (89°F)32°C (89°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (87°F)30°C (87°F)
Precipitation0in0in0in0.1in0.1in0in0in0in
Humidity76%77%79%79%76%77%79%80%
Barometric pressure1009 hPa1008 hPa1009 hPa1010 hPa1010 hPa1008 hPa1009 hPa1010 hPa
Cloud cover69%54%36%57%58%44%64%80%
Heat index32°C (89°F)32°C (89°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (88°F)31°C (87°F)30°C (87°F)
Dew point23°C (74°F)24°C (74°F)24°C (74°F)24°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)
Wind
Speed19km/h (12mph)20km/h (13mph)20km/h (12mph)20km/h (13mph)22km/h (13mph)25km/h (16mph)30km/h (18mph)24km/h (15mph)
Gusts28km/h (17mph)30km/h (19mph)29km/h (18mph)35km/h (22mph)34km/h (21mph)28km/h (18mph)38km/h (23mph)35km/h (22mph)
Direction 289°
WNW
285°
WNW
286°
WNW
289°
WNW
288°
WNW
290°
WNW
295°
WNW
300°
WNW
Wind chill28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)27°C (81°F)27°C (81°F)
Waves
Height0.5m (1.6ft)0.6m (2.0ft)0.6m (2.0ft)0.5m (1.6ft)0.6m (2.0ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)
Direction 263°
W
265°
W
258°
WSW
250°
WSW
252°
WSW
256°
WSW
259°
W
254°
WSW
Period5.3 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.5.3 sec.
Significant height0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)0.9m (3ft)1.0m (3.3ft)0.9m (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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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