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 13 December 202576°F to 86°Frecommended
Sunday 14 December 202579°F to 85°Frecommended
Monday 15 December 202574°F to 85°Frecommended
Tuesday 16 December 202576°F to 85°Frecommended
Wednesday 17 December 202577°F to 86°Frecommended
Thursday 18 December 202577°F to 85°Frecommended
Friday 19 December 202576°F to 83°Frecommended

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

Sea weather on Saturday 13 December 2025

On Saturday 13 December 2025, the sun will rise at 06:26 and will set at 17:50 on the beach(es) of Ko Samet. 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 8.1mph km/h (with gusts up to 12.4mph). Wave height will be up to 0.7ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)25°C (77°F)24°C (75°F)26°C (80°F)29°C (84°F)30°C (87°F)28°C (83°F)28°C (82°F)
Perceived temperature28°C (83°F)27°C (81°F)26°C (79°F)29°C (84°F)31°C (88°F)33°C (91°F)31°C (88°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%83%87%75%60%52%66%68%
Barometric pressure1011 hPa1010 hPa1010 hPa1012 hPa1011 hPa1008 hPa1009 hPa1011 hPa
Cloud cover86%76%54%45%47%44%30%17%
Heat index28°C (83°F)27°C (81°F)26°C (79°F)29°C (84°F)31°C (88°F)33°C (91°F)31°C (88°F)30°C (86°F)
Dew point22°C (72°F)22°C (72°F)22°C (71°F)22°C (71°F)20°C (69°F)20°C (67°F)21°C (70°F)21°C (70°F)
Wind
Speed9km/h (5mph)11km/h (7mph)13km/h (8mph)11km/h (7mph)6km/h (4mph)3km/h (2mph)3km/h (2mph)8km/h (5mph)
Gusts14km/h (9mph)19km/h (12mph)20km/h (12mph)14km/h (9mph)9km/h (5mph)5km/h (3mph)5km/h (3mph)15km/h (9mph)
Direction 29°
NNE
357°
N
14°
NNE
24°
NNE
63°
ENE
64°
ENE
13°
NNE
79°
ENE
Wind chill26°C (78°F)25°C (77°F)24°C (75°F)26°C (80°F)29°C (84°F)30°C (87°F)28°C (83°F)28°C (82°F)
Waves
Height0.2m (0.8ft)0.2m (0.8ft)0.2m (0.8ft)0.2m (0.8ft)0.2m (0.6ft)0.2m (0.5ft)0.1m (0.5ft)0.1m (0.5ft)
Direction 167°
SSE
166°
SSE
165°
SSE
165°
SSE
164°
SSE
165°
SSE
165°
SSE
167°
SSE
Period6.1 sec.5.9 sec.5.8 sec.5.7 sec.5.4 sec.5.0 sec.4.8 sec.4.6 sec.
Significant height0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 06:27 and will set at 17:51 on the beach(es) of Ko Samet. The outside temperature will be a high of 85°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 18mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)26°C (79°F)26°C (78°F)27°C (81°F)28°C (83°F)29°C (85°F)28°C (83°F)26°C (79°F)
Perceived temperature29°C (84°F)28°C (82°F)27°C (81°F)29°C (85°F)31°C (87°F)32°C (90°F)31°C (88°F)29°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity72%72%74%68%62%62%69%75%
Barometric pressure1011 hPa1009 hPa1010 hPa1013 hPa1011 hPa1009 hPa1009 hPa1012 hPa
Cloud cover77%29%23%17%18%74%88%59%
Heat index29°C (84°F)28°C (82°F)27°C (81°F)29°C (85°F)31°C (87°F)32°C (90°F)31°C (88°F)29°C (83°F)
Dew point21°C (70°F)21°C (69°F)21°C (69°F)21°C (70°F)20°C (69°F)21°C (70°F)22°C (71°F)22°C (71°F)
Wind
Speed8km/h (5mph)7km/h (4mph)9km/h (6mph)14km/h (9mph)11km/h (7mph)8km/h (5mph)18km/h (11mph)15km/h (10mph)
Gusts15km/h (9mph)12km/h (8mph)15km/h (9mph)18km/h (11mph)16km/h (10mph)12km/h (7mph)29km/h (18mph)27km/h (17mph)
Direction 46°
NE
23°
NNE
56°
NE
51°
NE
60°
ENE
45°
NE
29°
NNE
52°
NE
Wind chill27°C (80°F)26°C (79°F)26°C (78°F)27°C (81°F)28°C (83°F)29°C (85°F)28°C (83°F)26°C (79°F)
Waves
Height0.2m (0.6ft)0.2m (0.6ft)0.2m (0.6ft)0.3m (1.0ft)0.3m (1.1ft)0.2m (0.7ft)0.3m (1.0ft)0.3m (1.0ft)
Direction 165°
SSE
164°
SSE
165°
SSE
69°
ENE
81°
E
95°
E
65°
ENE
80°
E
Period4.8 sec.5.6 sec.5.2 sec.4.9 sec.4.8 sec.4.6 sec.4.5 sec.4.5 sec.
Significant height0.3m (1ft)0.3m (1ft)0.4m (1.3ft)0.7m (2.3ft)0.5m (1.6ft)0.4m (1.3ft)0.6m (2ft)0.4m (1.3ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 06:27 and will set at 17:51 on the beach(es) of Ko Samet. The outside temperature will be a high of 85°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 9.9mph km/h (with gusts up to 15.5mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (78°F)24°C (76°F)23°C (74°F)25°C (77°F)27°C (81°F)29°C (83°F)27°C (81°F)26°C (79°F)
Perceived temperature28°C (82°F)26°C (79°F)25°C (77°F)27°C (80°F)29°C (84°F)30°C (87°F)29°C (85°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%75%75%69%59%59%67%69%
Barometric pressure1012 hPa1010 hPa1012 hPa1014 hPa1012 hPa1009 hPa1011 hPa1013 hPa
Cloud cover33%45%46%32%24%24%26%14%
Heat index28°C (82°F)26°C (79°F)25°C (77°F)27°C (80°F)29°C (84°F)30°C (87°F)29°C (85°F)28°C (82°F)
Dew point21°C (69°F)20°C (67°F)19°C (66°F)19°C (66°F)19°C (66°F)20°C (68°F)21°C (69°F)20°C (68°F)
Wind
Speed16km/h (10mph)16km/h (10mph)15km/h (10mph)15km/h (9mph)10km/h (6mph)9km/h (6mph)12km/h (8mph)10km/h (6mph)
Gusts25km/h (15mph)25km/h (15mph)23km/h (15mph)19km/h (12mph)13km/h (8mph)13km/h (8mph)20km/h (12mph)17km/h (11mph)
Direction 22°
NNE
40°
NE
23°
NNE
40°
NE
48°
NE
82°
E
60°
ENE
41°
NE
Wind chill26°C (78°F)24°C (76°F)23°C (74°F)25°C (77°F)27°C (81°F)29°C (83°F)27°C (81°F)26°C (79°F)
Waves
Height0.3m (0.9ft)0.3m (1.1ft)0.4m (1.2ft)0.4m (1.4ft)0.3m (1.1ft)0.3m (1.1ft)0.4m (1.2ft)0.3m (1.0ft)
Direction 39°
NE
52°
NE
63°
ENE
62°
ENE
65°
ENE
71°
ENE
74°
ENE
86°
E
Period2.8 sec.4.6 sec.4.6 sec.4.6 sec.4.6 sec.5.0 sec.5.3 sec.5.3 sec.
Significant height0.6m (2ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.4m (1.3ft)0.5m (1.6ft)0.6m (2ft)0.4m (1.3ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 06:28 and will set at 17:52 on the beach(es) of Ko Samet. 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 8.1mph km/h (with gusts up to 13.7mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (76°F)24°C (75°F)26°C (79°F)26°C (78°F)29°C (84°F)28°C (82°F)27°C (81°F)
Perceived temperature27°C (80°F)26°C (79°F)26°C (78°F)28°C (82°F)26°C (79°F)31°C (87°F)30°C (86°F)29°C (85°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity70%71%72%62%52%55%67%70%
Barometric pressure1012 hPa1010 hPa1011 hPa1013 hPa1011 hPa1008 hPa1010 hPa1012 hPa
Cloud cover16%20%19%16%12%17%32%25%
Heat index27°C (80°F)26°C (79°F)26°C (78°F)28°C (82°F)26°C (79°F)31°C (87°F)30°C (86°F)29°C (85°F)
Dew point19°C (67°F)19°C (66°F)19°C (66°F)18°C (65°F)15°C (59°F)19°C (66°F)21°C (70°F)21°C (70°F)
Wind
Speed12km/h (8mph)13km/h (8mph)12km/h (8mph)12km/h (7mph)5km/h (3mph)4km/h (2mph)5km/h (3mph)5km/h (3mph)
Gusts21km/h (13mph)22km/h (14mph)20km/h (12mph)15km/h (9mph)10km/h (6mph)6km/h (4mph)10km/h (6mph)10km/h (6mph)
Direction 13°
NNE
26°
NNE
33°
NNE
28°
NNE
34°
NNE
208°
SSW
257°
WSW
36°
NE
Wind chill25°C (77°F)25°C (76°F)24°C (75°F)26°C (79°F)26°C (78°F)29°C (84°F)28°C (82°F)27°C (81°F)
Waves
Height0.3m (0.9ft)0.2m (0.8ft)0.2m (0.8ft)0.2m (0.8ft)0.2m (0.5ft)0.2m (0.5ft)0.2m (0.8ft)0.2m (0.6ft)
Direction 58°
ENE
36°
NE
40°
NE
44°
NE
80°
E
215°
SW
233°
SW
244°
WSW
Period2.8 sec.7.6 sec.7.4 sec.7.1 sec.2.6 sec.2.6 sec.2.6 sec.2.4 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.1m (0.3ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 06:28 and will set at 17:52 on the beach(es) of Ko Samet. The outside temperature will be a high of 86°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 8.1mph km/h (with gusts up to 9.9mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (80°F)26°C (78°F)25°C (77°F)27°C (81°F)26°C (78°F)30°C (86°F)28°C (82°F)27°C (81°F)
Perceived temperature28°C (83°F)27°C (81°F)27°C (80°F)29°C (84°F)27°C (80°F)32°C (89°F)30°C (85°F)30°C (85°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity70%70%69%62%56%54%67%69%
Barometric pressure1012 hPa1010 hPa1011 hPa1013 hPa1011 hPa1008 hPa1010 hPa1011 hPa
Cloud cover21%22%23%15%14%33%8%19%
Heat index28°C (83°F)27°C (81°F)27°C (80°F)29°C (84°F)27°C (80°F)32°C (89°F)30°C (85°F)30°C (85°F)
Dew point21°C (69°F)20°C (68°F)19°C (66°F)19°C (67°F)16°C (61°F)20°C (67°F)21°C (69°F)21°C (70°F)
Wind
Speed7km/h (4mph)9km/h (5mph)9km/h (6mph)13km/h (8mph)7km/h (4mph)2km/h (1mph)6km/h (4mph)6km/h (4mph)
Gusts12km/h (8mph)15km/h (9mph)16km/h (10mph)16km/h (10mph)15km/h (9mph)3km/h (2mph)11km/h (7mph)12km/h (7mph)
Direction 41°
NE
23°
NNE
24°
NNE
42°
NE
65°
ENE
90°
E
299°
WNW
132°
SE
Wind chill26°C (80°F)26°C (78°F)25°C (77°F)27°C (81°F)26°C (78°F)30°C (86°F)28°C (82°F)27°C (81°F)
Waves
Height0.1m (0.5ft)0.1m (0.5ft)0.1m (0.4ft)0.3m (0.9ft)0.2m (0.7ft)0.2m (0.5ft)0.2m (0.5ft)0.2m (0.7ft)
Direction 258°
WSW
33°
NNE
37°
NE
27°
NNE
28°
NNE
27°
NNE
28°
NNE
27°
NNE
Period2.5 sec.2.6 sec.2.5 sec.5.6 sec.5.2 sec.5.0 sec.4.7 sec.3.6 sec.
Significant height0.3m (1ft)0.3m (1ft)0.3m (1ft)0.6m (2ft)0.4m (1.3ft)0.3m (1ft)0.4m (1.3ft)0.5m (1.6ft)
Sea water temperature
Water temperature26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)28°C (82°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 06:29 and will set at 17:53 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 9.3mph km/h (with gusts up to 14.3mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)26°C (78°F)25°C (77°F)27°C (80°F)28°C (83°F)29°C (84°F)28°C (82°F)27°C (80°F)
Perceived temperature29°C (83°F)28°C (82°F)27°C (80°F)28°C (83°F)30°C (86°F)31°C (88°F)30°C (87°F)29°C (84°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity70%70%72%66%60%59%66%71%
Barometric pressure1011 hPa1010 hPa1011 hPa1013 hPa1011 hPa1008 hPa1009 hPa1010 hPa
Cloud cover20%23%24%21%19%28%33%22%
Heat index29°C (83°F)28°C (82°F)27°C (80°F)28°C (83°F)30°C (86°F)31°C (88°F)30°C (87°F)29°C (84°F)
Dew point21°C (69°F)20°C (68°F)20°C (67°F)20°C (67°F)20°C (67°F)20°C (68°F)21°C (70°F)21°C (70°F)
Wind
Speed8km/h (5mph)11km/h (7mph)15km/h (9mph)15km/h (9mph)9km/h (6mph)3km/h (2mph)4km/h (3mph)5km/h (3mph)
Gusts14km/h (9mph)19km/h (12mph)23km/h (14mph)19km/h (12mph)12km/h (7mph)4km/h (2mph)8km/h (5mph)8km/h (5mph)
Direction 40°
NE
36°
NE
38°
NE
49°
NE
77°
ENE
202°
SSW
292°
WNW
130°
SE
Wind chill27°C (80°F)26°C (78°F)25°C (77°F)27°C (80°F)28°C (83°F)29°C (84°F)28°C (82°F)27°C (80°F)
Waves
Height0.3m (1.0ft)0.3m (1.0ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1.0ft)0.2m (0.7ft)0.1m (0.3ft)0.3m (1.0ft)
Direction 19°
NNE
17°
NNE
25°
NNE
33°
NNE
41°
NE
55°
NE
6686°
3527°
Period3.0 sec.3.0 sec.3.0 sec.3.0 sec.3.1 sec.2.7 sec.2.4 sec.2.4 sec.
Significant height0.5m (1.6ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.4m (1.3ft)0.2m (0.7ft)0.3m (1ft)0.2m (0.7ft)
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 Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 06:29 and will set at 17:53 on the beach(es) of Ko Samet. The outside temperature will be a high of 83°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 9.3mph km/h (with gusts up to 14.3mph). Wave height will be up to 0.7ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)25°C (77°F)24°C (76°F)26°C (80°F)27°C (80°F)27°C (81°F)27°C (80°F)26°C (79°F)
Perceived temperature28°C (82°F)27°C (80°F)26°C (79°F)28°C (82°F)27°C (81°F)28°C (82°F)28°C (83°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity71%69%68%58%51%50%60%65%
Barometric pressure1010 hPa1009 hPa1010 hPa1011 hPa1010 hPa1007 hPa1008 hPa1009 hPa
Cloud cover14%13%10%7%4%5%4%2%
Heat index28°C (82°F)27°C (80°F)26°C (79°F)28°C (82°F)27°C (81°F)28°C (82°F)28°C (83°F)28°C (82°F)
Dew point20°C (69°F)19°C (66°F)18°C (64°F)17°C (63°F)16°C (60°F)16°C (60°F)18°C (65°F)19°C (66°F)
Wind
Speed7km/h (4mph)13km/h (8mph)14km/h (9mph)15km/h (9mph)10km/h (6mph)5km/h (3mph)5km/h (3mph)8km/h (5mph)
Gusts12km/h (7mph)21km/h (13mph)23km/h (14mph)21km/h (13mph)17km/h (11mph)11km/h (7mph)10km/h (6mph)14km/h (9mph)
Direction 29°
NNE
33°
NNE
36°
NE
42°
NE
69°
ENE
188°
S
273°
W
120°
ESE
Wind chill26°C (79°F)25°C (77°F)24°C (76°F)26°C (80°F)27°C (80°F)27°C (81°F)27°C (80°F)26°C (79°F)
Waves
Height0.2m (0.7ft)0.1m (0.3ft)0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)
Direction 286°
WNW
110°
ESE
31°
NNE
37°
NE
42°
NE
122°
ESE
205°
SSW
185°
S
Period2.0 sec.1.7 sec.1.7 sec.4.9 sec.3.6 sec.4.5 sec.5.4 sec.4.9 sec.
Significant height0.2m (0.7ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)
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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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