Sea weather in Koh Yao Yai in Thailand All the beach weather in Koh Yao Yai

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

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

Date Outside temp. Our opinion
Sunday 14 December 202577°F to 83°Frecommended
Monday 15 December 202579°F to 81°Fdiscouraged
Tuesday 16 December 202577°F to 83°Frecommended
Wednesday 17 December 202577°F to 85°Frecommended
Thursday 18 December 202577°F to 83°Frecommended
Friday 19 December 202579°F to 83°Frecommended
Saturday 20 December 202574°F to 83°Frecommended

Sea Weather: Your daily and hourly sea weather in Koh Yao Yai

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 06:30 and will set at 18:10 on the beach(es) of Koh Yao Yai. The outside temperature will be a high of 83°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 13.1mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)28°C (82°F)27°C (81°F)27°C (81°F)
Perceived temperature29°C (84°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (82°F)30°C (87°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%83%83%81%75%68%74%76%
Barometric pressure1011 hPa1009 hPa1010 hPa1012 hPa1011 hPa1007 hPa1008 hPa1011 hPa
Cloud cover15%28%18%28%17%89%74%45%
Heat index29°C (84°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (82°F)30°C (87°F)30°C (86°F)30°C (86°F)
Dew point23°C (73°F)23°C (73°F)22°C (72°F)22°C (72°F)21°C (70°F)21°C (71°F)22°C (72°F)22°C (72°F)
Wind
Speed13km/h (8mph)12km/h (7mph)13km/h (8mph)12km/h (7mph)9km/h (6mph)9km/h (6mph)9km/h (6mph)15km/h (10mph)
Gusts18km/h (11mph)15km/h (10mph)17km/h (11mph)16km/h (10mph)14km/h (9mph)14km/h (9mph)16km/h (10mph)21km/h (13mph)
Direction 41°
NE
41°
NE
41°
NE
58°
ENE
79°
ENE
113°
ESE
48°
NE
45°
NE
Wind chill26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)28°C (82°F)27°C (81°F)27°C (81°F)
Waves
Height0.3m (1.0ft)0.2m (0.6ft)0.1m (0.4ft)0.2m (0.8ft)0.1m (0.5ft)0.4m (1.2ft)0.3m (1.0ft)0.2m (0.8ft)
Direction 105°
ESE
104°
ESE
79°
ENE
81°
E
90°
E
116°
ESE
109°
ESE
116°
ESE
Period2.7 sec.2.7 sec.2.7 sec.2.7 sec.2.7 sec.2.7 sec.2.7 sec.2.7 sec.
Significant height0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.6m (2ft)0.8m (2.6ft)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 Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 06:30 and will set at 18:10 on the beach(es) of Koh Yao Yai. The outside temperature will be a high of 81°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 13.1mph 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 temperature26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)27°C (81°F)27°C (80°F)27°C (80°F)
Perceived temperature29°C (84°F)28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)30°C (86°F)30°C (85°F)30°C (85°F)
Precipitation0in0in0in0in0in0in0.1in0in
Humidity80%82%81%80%74%74%79%81%
Barometric pressure1011 hPa1009 hPa1010 hPa1012 hPa1011 hPa1008 hPa1009 hPa1012 hPa
Cloud cover64%43%79%32%21%88%89%84%
Heat index29°C (84°F)28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)30°C (86°F)30°C (85°F)30°C (85°F)
Dew point23°C (73°F)22°C (72°F)22°C (72°F)22°C (71°F)21°C (69°F)22°C (72°F)23°C (73°F)23°C (73°F)
Wind
Speed21km/h (13mph)17km/h (10mph)13km/h (8mph)10km/h (6mph)6km/h (4mph)15km/h (9mph)14km/h (9mph)17km/h (11mph)
Gusts27km/h (17mph)22km/h (14mph)17km/h (11mph)14km/h (8mph)9km/h (6mph)22km/h (14mph)26km/h (16mph)24km/h (15mph)
Direction 31°
NNE
45°
NE
48°
NE
50°
NE
102°
ESE
100°
E
81°
E
61°
ENE
Wind chill26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (78°F)27°C (81°F)27°C (80°F)27°C (80°F)
Waves
Height0.2m (0.8ft)0.2m (0.7ft)0.1m (0.5ft)0.1m (0.4ft)0.3m (1.0ft)0.1m (0.4ft)0.2m (0.7ft)0.3m (1.0ft)
Direction 55°
NE
24°
NNE
49°
NE
68°
ENE
79°
E
81°
E
100°
E
115°
ESE
Period2.5 sec.2.4 sec.1.8 sec.2.2 sec.2.2 sec.2.2 sec.2.2 sec.2.2 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.4m (1.3ft)0.4m (1.3ft)0.6m (2ft)0.6m (2ft)
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 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 06:31 and will set at 18:11 on the beach(es) of Koh Yao Yai. The outside temperature will be a high of 83°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 11.2mph km/h (with gusts up to 16.2mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (79°F)26°C (78°F)25°C (78°F)26°C (78°F)26°C (79°F)28°C (82°F)27°C (81°F)27°C (81°F)
Perceived temperature29°C (84°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)30°C (86°F)30°C (87°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%83%82%80%74%68%75%77%
Barometric pressure1011 hPa1009 hPa1010 hPa1012 hPa1011 hPa1007 hPa1009 hPa1012 hPa
Cloud cover37%32%20%17%75%69%70%73%
Heat index29°C (84°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)30°C (86°F)30°C (87°F)30°C (86°F)
Dew point23°C (73°F)22°C (72°F)22°C (72°F)22°C (71°F)21°C (70°F)21°C (70°F)23°C (73°F)23°C (73°F)
Wind
Speed15km/h (10mph)15km/h (9mph)14km/h (9mph)11km/h (7mph)9km/h (5mph)6km/h (4mph)12km/h (8mph)18km/h (11mph)
Gusts22km/h (14mph)20km/h (12mph)18km/h (11mph)15km/h (9mph)13km/h (8mph)10km/h (6mph)19km/h (12mph)26km/h (16mph)
Direction 48°
NE
44°
NE
49°
NE
54°
NE
85°
E
128°
SE
33°
NNE
49°
NE
Wind chill26°C (79°F)26°C (78°F)25°C (78°F)26°C (78°F)26°C (79°F)28°C (82°F)27°C (81°F)27°C (81°F)
Waves
Height0.3m (0.9ft)0.2m (0.6ft)0.2m (0.5ft)0.1m (0.5ft)0.1m (0.4ft)0.3m (1.0ft)0.1m (0.4ft)0.2m (0.5ft)
Direction 117°
ESE
115°
ESE
70°
ENE
69°
ENE
74°
ENE
76°
ENE
62°
ENE
56°
ENE
Period2.2 sec.2.6 sec.2.6 sec.2.6 sec.2.2 sec.2.1 sec.2.1 sec.2.5 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.5m (1.6ft)0.4m (1.3ft)0.1m (0.3ft)0.2m (0.7ft)0.5m (1.6ft)0.3m (1ft)
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 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 06:31 and will set at 18:11 on the beach(es) of Koh Yao Yai. 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 11.8mph km/h (with gusts up to 18mph). 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)26°C (78°F)26°C (78°F)26°C (78°F)26°C (79°F)28°C (83°F)27°C (81°F)27°C (81°F)
Perceived temperature29°C (84°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)31°C (87°F)30°C (87°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%83%82%80%73%64%75%76%
Barometric pressure1011 hPa1010 hPa1010 hPa1012 hPa1011 hPa1008 hPa1010 hPa1012 hPa
Cloud cover88%40%37%25%19%51%76%21%
Heat index29°C (84°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)31°C (87°F)30°C (87°F)30°C (86°F)
Dew point23°C (73°F)23°C (73°F)22°C (72°F)22°C (72°F)21°C (69°F)21°C (69°F)23°C (73°F)23°C (73°F)
Wind
Speed19km/h (12mph)19km/h (12mph)13km/h (8mph)11km/h (7mph)7km/h (4mph)4km/h (3mph)18km/h (11mph)16km/h (10mph)
Gusts29km/h (18mph)26km/h (16mph)18km/h (11mph)15km/h (9mph)11km/h (7mph)7km/h (4mph)27km/h (17mph)23km/h (14mph)
Direction 35°
NE
35°
NE
46°
NE
64°
ENE
73°
ENE
111°
ESE
79°
ENE
71°
ENE
Wind chill26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (79°F)28°C (83°F)27°C (81°F)27°C (81°F)
Waves
Height0.2m (0.7ft)0.2m (0.5ft)0.1m (0.4ft)0.1m (0.4ft)0.1m (0.4ft)0.1m (0.3ft)0.2m (0.5ft)0.2m (0.7ft)
Direction 46°
NE
29°
NNE
52°
NE
71°
ENE
87°
E
91°
E
73°
ENE
88°
E
Period3.0 sec.2.9 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.2.0 sec.
Significant height0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.4m (1.3ft)0.2m (0.7ft)0.2m (0.7ft)0.5m (1.6ft)0.6m (2ft)
Sea water temperature
Water temperature26°C (80°F)26°C (80°F)26°C (80°F)26°C (80°F)26°C (80°F)26°C (80°F)26°C (80°F)26°C (80°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 06:32 and will set at 18:12 on the beach(es) of Koh Yao Yai. The outside temperature will be a high of 83°F t and a low of 77°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 8.7mph 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 temperature26°C (80°F)26°C (78°F)26°C (78°F)26°C (79°F)26°C (79°F)28°C (82°F)27°C (81°F)27°C (80°F)
Perceived temperature29°C (84°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)30°C (87°F)30°C (86°F)30°C (85°F)
Precipitation0in0in0in0in0in0in0.1in0in
Humidity80%83%81%80%74%67%76%76%
Barometric pressure1011 hPa1009 hPa1010 hPa1013 hPa1011 hPa1008 hPa1009 hPa1011 hPa
Cloud cover44%18%23%16%29%88%83%39%
Heat index29°C (84°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)30°C (87°F)30°C (86°F)30°C (85°F)
Dew point23°C (73°F)23°C (73°F)22°C (72°F)22°C (72°F)21°C (70°F)21°C (70°F)23°C (73°F)22°C (72°F)
Wind
Speed13km/h (8mph)13km/h (8mph)10km/h (6mph)12km/h (7mph)5km/h (3mph)8km/h (5mph)14km/h (9mph)13km/h (8mph)
Gusts18km/h (11mph)18km/h (11mph)14km/h (8mph)15km/h (10mph)8km/h (5mph)12km/h (7mph)27km/h (17mph)20km/h (13mph)
Direction 42°
NE
58°
ENE
41°
NE
41°
NE
82°
E
48°
NE
60°
ENE
53°
NE
Wind chill26°C (80°F)26°C (78°F)26°C (78°F)26°C (79°F)26°C (79°F)28°C (82°F)27°C (81°F)27°C (80°F)
Waves
Height0.2m (0.6ft)0.1m (0.4ft)0.3m (0.9ft)0.2m (0.7ft)0.2m (0.6ft)0.2m (0.6ft)0.2m (0.5ft)0.1m (0.3ft)
Direction 112°
ESE
118°
ESE
60°
ENE
255°
WSW
255°
WSW
255°
WSW
255°
WSW
256°
WSW
Period2.4 sec.2.6 sec.2.6 sec.16.0 sec.15.9 sec.15.8 sec.15.7 sec.15.5 sec.
Significant height0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.4m (1.3ft)0.2m (0.7ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)
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)29°C (83°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 06:32 and will set at 18:12 on the beach(es) of Koh Yao Yai. The outside temperature will be a high of 83°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 10.6mph km/h (with gusts up to 14.9mph). Wave height will be up to 0.7ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature26°C (80°F)26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (79°F)27°C (81°F)27°C (81°F)
Perceived temperature29°C (84°F)28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)30°C (86°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%80%80%79%75%67%70%75%
Barometric pressure1011 hPa1010 hPa1010 hPa1011 hPa1010 hPa1007 hPa1008 hPa1009 hPa
Cloud cover24%23%25%20%16%13%31%25%
Heat index29°C (84°F)28°C (83°F)28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)30°C (86°F)30°C (86°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)22°C (71°F)21°C (70°F)20°C (67°F)22°C (71°F)22°C (72°F)
Wind
Speed11km/h (7mph)12km/h (7mph)13km/h (8mph)11km/h (7mph)5km/h (3mph)3km/h (2mph)12km/h (7mph)17km/h (11mph)
Gusts16km/h (10mph)16km/h (10mph)17km/h (11mph)14km/h (9mph)7km/h (4mph)6km/h (4mph)17km/h (11mph)24km/h (15mph)
Direction 38°
NE
39°
NE
39°
NE
39°
NE
72°
ENE
262°
W
149°
SSE
42°
NE
Wind chill26°C (80°F)26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)26°C (79°F)27°C (81°F)27°C (81°F)
Waves
Height0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)
Direction 255°
WSW
254°
WSW
254°
WSW
254°
WSW
254°
WSW
255°
WSW
255°
WSW
256°
WSW
Period15.2 sec.6.9 sec.10.7 sec.6.4 sec.10.4 sec.14.5 sec.14.4 sec.14.4 sec.
Significant height0.3m (1ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.5m (1.6ft)
Sea water temperature
Water temperature29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 06:33 and will set at 18:13 on the beach(es) of Koh Yao Yai. The outside temperature will be a high of 83°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 9.3mph 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 temperature26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)24°C (76°F)26°C (79°F)28°C (82°F)27°C (81°F)
Perceived temperature29°C (84°F)28°C (83°F)28°C (82°F)28°C (83°F)26°C (79°F)28°C (83°F)30°C (86°F)30°C (85°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%81%82%81%76%68%70%73%
Barometric pressure1009 hPa1008 hPa1008 hPa1010 hPa1009 hPa1006 hPa1006 hPa1009 hPa
Cloud cover16%21%28%24%16%23%17%10%
Heat index29°C (84°F)28°C (83°F)28°C (82°F)28°C (83°F)26°C (79°F)28°C (83°F)30°C (86°F)30°C (85°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)20°C (67°F)20°C (68°F)22°C (71°F)22°C (71°F)
Wind
Speed15km/h (9mph)11km/h (7mph)10km/h (6mph)10km/h (6mph)6km/h (4mph)2km/h (1mph)8km/h (5mph)15km/h (9mph)
Gusts21km/h (13mph)15km/h (9mph)13km/h (8mph)14km/h (9mph)9km/h (6mph)4km/h (2mph)13km/h (8mph)22km/h (14mph)
Direction 39°
NE
35°
NE
37°
NE
42°
NE
104°
ESE
191°
S
290°
WNW
128°
SE
Wind chill26°C (79°F)26°C (78°F)26°C (78°F)26°C (78°F)24°C (76°F)26°C (79°F)28°C (82°F)27°C (81°F)
Waves
Height0.3m (1.0ft)0.3m (1.0ft)0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)0.2m (0.7ft)0.3m (1.0ft)0.3m (1.0ft)
Direction 112°
ESE
183°
S
255°
WSW
255°
WSW
255°
WSW
255°
WSW
291°
WNW
322°
NW
Period14.2 sec.13.9 sec.13.6 sec.13.4 sec.13.3 sec.13.2 sec.13.2 sec.13.1 sec.
Significant height0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1ft)0.1m (0.3ft)0.3m (1ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)29°C (83°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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