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. | Max wind | Our opinion | Details |
|---|---|---|---|---|
| Monday 15 December 2025 | 79°F to 81°F | 13.1mph | discouraged | all the sea weather |
| Tuesday 16 December 2025 | 76°F to 81°F | 9.9mph | recommended | all the sea weather |
| Wednesday 17 December 2025 | 79°F to 81°F | 8.7mph | discouraged | all the sea weather |
| Thursday 18 December 2025 | 79°F to 81°F | 6.8mph | recommended | all the sea weather |
| Friday 19 December 2025 | 79°F to 81°F | 8.1mph | discouraged | all the sea weather |
| Saturday 20 December 2025 | 76°F to 81°F | 8.1mph | recommended | all the sea weather |
| Sunday 21 December 2025 | 76°F to 81°F | 10.6mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Koh Tao
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 06:29 and will set at 18:02 on the beach(es) of Koh Tao. 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 18mph). Wave height will be up to 3.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  |  | |  |  | | |  |
| Outside temperature | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 26°C (80°F) |
| Perceived temperature | 30°C (86°F) | 30°C (86°F) | 29°C (85°F) | 29°C (85°F) | 28°C (83°F) | 29°C (83°F) | 29°C (85°F) | 29°C (85°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 82% | 81% | 78% | 76% | 78% | 81% | 82% | 83% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1010 hPa | 1013 hPa | 1012 hPa | 1010 hPa | 1010 hPa | 1013 hPa |
| Cloud cover | 26% | 78% | 83% | 34% | 79% | 53% | 88% | 60% |
| Heat index | 30°C (86°F) | 30°C (86°F) | 29°C (85°F) | 29°C (85°F) | 28°C (83°F) | 29°C (83°F) | 29°C (85°F) | 29°C (85°F) |
| Dew point | 24°C (74°F) | 23°C (74°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 23°C (73°F) | 23°C (74°F) |
| Wind | ||||||||
| Speed | 17km/h (11mph) | 14km/h (9mph) | 11km/h (7mph) | 8km/h (5mph) | 15km/h (9mph) | 18km/h (11mph) | 18km/h (11mph) | 21km/h (13mph) |
| Gusts | 24km/h (15mph) | 21km/h (13mph) | 18km/h (11mph) | 12km/h (7mph) | 23km/h (14mph) | 26km/h (16mph) | 25km/h (16mph) | 29km/h (18mph) |
| Direction | 67° ENE | 75° ENE | 61° ENE | 87° E | 56° ENE | 57° ENE | 66° ENE | 54° NE |
| Wind chill | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 26°C (80°F) |
| Waves | ||||||||
| Height | 0.8m (2.5ft) | 0.7m (2.2ft) | 0.6m (1.9ft) | 0.5m (1.7ft) | 0.5m (1.7ft) | 0.8m (2.5ft) | 0.9m (3.1ft) | 1.0m (3.2ft) |
| Direction | 31° NNE | 48° NE | 47° NE | 42° NE | 35° NE | 61° ENE | 67° ENE | 56° NE |
| Period | 4.8 sec. | 4.6 sec. | 5.0 sec. | 4.2 sec. | 5.5 sec. | 4.5 sec. | 4.5 sec. | 5.6 sec. |
| Significant height | 1.0m (3.3ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 06:30 and will set at 18:02 on the beach(es) of Koh Tao. The outside temperature will be a high of 81°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 11.2mph km/h (with gusts up to 16.8mph). Wave height will be up to 3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 27°C (80°F) | 26°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) | 27°C (81°F) | 27°C (80°F) |
| Perceived temperature | 30°C (85°F) | 29°C (85°F) | 29°C (85°F) | 30°C (85°F) | 29°C (84°F) | 30°C (85°F) | 30°C (86°F) | 30°C (86°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 80% | 80% | 78% | 79% | 79% | 78% | 80% | 81% |
| Barometric pressure | 1012 hPa | 1010 hPa | 1011 hPa | 1013 hPa | 1012 hPa | 1009 hPa | 1010 hPa | 1013 hPa |
| Cloud cover | 70% | 81% | 51% | 45% | 77% | 89% | 28% | 14% |
| Heat index | 30°C (85°F) | 29°C (85°F) | 29°C (85°F) | 30°C (85°F) | 29°C (84°F) | 30°C (85°F) | 30°C (86°F) | 30°C (86°F) |
| Dew point | 23°C (73°F) | 23°C (73°F) | 22°C (72°F) | 23°C (73°F) | 22°C (72°F) | 23°C (73°F) | 23°C (74°F) | 23°C (74°F) |
| Wind | ||||||||
| Speed | 17km/h (10mph) | 17km/h (11mph) | 15km/h (9mph) | 17km/h (11mph) | 17km/h (11mph) | 18km/h (11mph) | 16km/h (10mph) | 16km/h (10mph) |
| Gusts | 23km/h (14mph) | 24km/h (15mph) | 23km/h (14mph) | 25km/h (15mph) | 27km/h (17mph) | 26km/h (16mph) | 24km/h (15mph) | 23km/h (14mph) |
| Direction | 62° ENE | 69° ENE | 41° NE | 42° NE | 43° NE | 36° NE | 30° NNE | 44° NE |
| Wind chill | 27°C (80°F) | 26°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) | 27°C (81°F) | 27°C (80°F) |
| Waves | ||||||||
| Height | 0.9m (3.0ft) | 0.8m (2.7ft) | 0.7m (2.3ft) | 0.6m (2.0ft) | 0.7m (2.2ft) | 0.7m (2.2ft) | 0.7m (2.2ft) | 0.7m (2.2ft) |
| Direction | 39° NE | 78° ENE | 44° NE | 55° NE | 32° NNE | 31° NNE | 26° NNE | 20° NNE |
| Period | 5.8 sec. | 5.8 sec. | 5.4 sec. | 5.1 sec. | 6.9 sec. | 6.7 sec. | 6.6 sec. | 6.5 sec. |
| Significant height | 1.0m (3.3ft) | 0.7m (2.3ft) | 0.9m (3ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) |
| Sea water temperature | ||||||||
| Water temperature | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) |
Sea weather on Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 06:30 and will set at 18:03 on the beach(es) of Koh Tao. 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 13.7mph km/h (with gusts up to 21.1mph). Wave height will be up to 2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) |
| Perceived temperature | 30°C (85°F) | 29°C (85°F) | 29°C (85°F) | 29°C (85°F) | 29°C (83°F) | 29°C (85°F) | 29°C (84°F) | 30°C (86°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 78% | 77% | 78% | 79% | 76% | 78% | 82% | 82% |
| Barometric pressure | 1012 hPa | 1010 hPa | 1011 hPa | 1013 hPa | 1012 hPa | 1010 hPa | 1011 hPa | 1012 hPa |
| Cloud cover | 23% | 51% | 51% | 70% | 88% | 72% | 10% | 81% |
| Heat index | 30°C (85°F) | 29°C (85°F) | 29°C (85°F) | 29°C (85°F) | 29°C (83°F) | 29°C (85°F) | 29°C (84°F) | 30°C (86°F) |
| Dew point | 23°C (73°F) | 22°C (72°F) | 22°C (72°F) | 23°C (73°F) | 22°C (71°F) | 22°C (72°F) | 23°C (73°F) | 24°C (74°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 13km/h (8mph) | 12km/h (7mph) | 13km/h (8mph) | 17km/h (10mph) | 22km/h (14mph) | 18km/h (11mph) | 14km/h (9mph) |
| Gusts | 16km/h (10mph) | 20km/h (12mph) | 17km/h (11mph) | 19km/h (12mph) | 28km/h (18mph) | 34km/h (21mph) | 31km/h (19mph) | 20km/h (13mph) |
| Direction | 54° NE | 42° NE | 21° NNE | 18° NNE | 33° NNE | 38° NE | 43° NE | 47° NE |
| Wind chill | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) |
| Waves | ||||||||
| Height | 0.6m (2.0ft) | 0.5m (1.8ft) | 0.5m (1.6ft) | 0.4m (1.4ft) | 0.4m (1.2ft) | 0.4m (1.3ft) | 0.6m (2.0ft) | 0.6m (2.1ft) |
| Direction | 24° NNE | 28° NNE | 34° NE | 40° NE | 50° NE | 33° NNE | 14° NNE | 12° NNE |
| Period | 6.6 sec. | 4.2 sec. | 6.0 sec. | 4.0 sec. | 5.3 sec. | 5.1 sec. | 6.0 sec. | 6.2 sec. |
| Significant height | 0.5m (1.6ft) | 0.8m (2.6ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.6m (2ft) | 0.6m (2ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 06:31 and will set at 18:03 on the beach(es) of Koh Tao. 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 8.1mph km/h (with gusts up to 13.1mph). Wave height will be up to 2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 27°C (80°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 26°C (79°F) |
| Perceived temperature | 30°C (85°F) | 30°C (86°F) | 30°C (86°F) | 30°C (86°F) | 29°C (84°F) | 29°C (84°F) | 30°C (86°F) | 29°C (83°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0.1in |
| Humidity | 79% | 75% | 75% | 75% | 68% | 67% | 74% | 79% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1011 hPa | 1013 hPa | 1011 hPa | 1009 hPa | 1010 hPa | 1012 hPa |
| Cloud cover | 19% | 82% | 46% | 58% | 54% | 37% | 83% | 70% |
| Heat index | 30°C (85°F) | 30°C (86°F) | 30°C (86°F) | 30°C (86°F) | 29°C (84°F) | 29°C (84°F) | 30°C (86°F) | 29°C (83°F) |
| Dew point | 23°C (73°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 21°C (69°F) | 21°C (69°F) | 22°C (72°F) | 22°C (72°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 10km/h (6mph) | 9km/h (5mph) | 6km/h (4mph) | 5km/h (3mph) | 6km/h (4mph) | 11km/h (7mph) | 11km/h (7mph) |
| Gusts | 21km/h (13mph) | 16km/h (10mph) | 13km/h (8mph) | 8km/h (5mph) | 8km/h (5mph) | 8km/h (5mph) | 16km/h (10mph) | 18km/h (11mph) |
| Direction | 35° NE | 58° ENE | 57° ENE | 47° NE | 88° E | 69° ENE | 31° NNE | 39° NE |
| Wind chill | 27°C (80°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 0.6m (1.9ft) | 0.5m (1.6ft) | 0.4m (1.4ft) | 0.4m (1.2ft) | 0.3m (1.1ft) | 0.4m (1.2ft) | 0.4m (1.5ft) | 0.5m (1.7ft) |
| Direction | 12° NNE | 13° NNE | 15° NNE | 21° NNE | 105° ESE | 21° NNE | 12° NNE | 28° NNE |
| Period | 4.6 sec. | 4.5 sec. | 4.2 sec. | 4.0 sec. | 3.8 sec. | 3.7 sec. | 4.1 sec. | 6.2 sec. |
| Significant height | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.5m (1.6ft) | 0.6m (2ft) |
| Sea water temperature | ||||||||
| Water temperature | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 06:31 and will set at 18:04 on the beach(es) of Koh Tao. 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 14.3mph km/h (with gusts up to 21.8mph). Wave height will be up to 3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | |  |
| Outside temperature | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) |
| Perceived temperature | 30°C (85°F) | 29°C (85°F) | 30°C (85°F) | 29°C (85°F) | 29°C (83°F) | 29°C (85°F) | 29°C (85°F) | 29°C (85°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0.1in | 0in | 0in | 0in |
| Humidity | 76% | 75% | 76% | 79% | 78% | 77% | 78% | 77% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1010 hPa | 1012 hPa | 1011 hPa | 1008 hPa | 1009 hPa | 1010 hPa |
| Cloud cover | 84% | 26% | 86% | 71% | 71% | 28% | 15% | 12% |
| Heat index | 30°C (85°F) | 29°C (85°F) | 30°C (85°F) | 29°C (85°F) | 29°C (83°F) | 29°C (85°F) | 29°C (85°F) | 29°C (85°F) |
| Dew point | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 23°C (73°F) | 22°C (71°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 9km/h (5mph) | 13km/h (8mph) | 23km/h (14mph) | 22km/h (13mph) | 23km/h (14mph) | 22km/h (14mph) | 13km/h (8mph) |
| Gusts | 13km/h (8mph) | 13km/h (8mph) | 19km/h (12mph) | 34km/h (21mph) | 35km/h (22mph) | 34km/h (21mph) | 32km/h (20mph) | 19km/h (12mph) |
| Direction | 46° NE | 25° NNE | 13° NNE | 22° NNE | 30° NNE | 24° NNE | 32° NNE | 49° NE |
| Wind chill | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 26°C (79°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) |
| Waves | ||||||||
| Height | 0.6m (2.0ft) | 0.6m (2.0ft) | 0.5m (1.8ft) | 0.6m (2.1ft) | 0.8m (2.7ft) | 0.9m (3.1ft) | 0.9m (3.0ft) | 0.8m (2.6ft) |
| Direction | 44° NE | 45° NE | 52° NE | 30° NNE | 26° NNE | 24° NNE | 24° NNE | 27° NNE |
| Period | 4.3 sec. | 4.4 sec. | 4.3 sec. | 6.1 sec. | 6.5 sec. | 6.6 sec. | 6.5 sec. | 5.4 sec. |
| Significant height | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 1.0m (3.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 27°C (81°F) |
Sea weather on Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 06:32 and will set at 18:04 on the beach(es) of Koh Tao. The outside temperature will be a high of 81°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 11.8mph km/h (with gusts up to 20.5mph). Wave height will be up to 2.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | |  | | | | |
| Outside temperature | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 25°C (77°F) | 25°C (76°F) | 26°C (79°F) | 26°C (80°F) |
| Perceived temperature | 29°C (84°F) | 29°C (84°F) | 29°C (84°F) | 30°C (85°F) | 27°C (81°F) | 27°C (80°F) | 28°C (83°F) | 29°C (84°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 73% | 72% | 73% | 76% | 77% | 75% | 76% | 75% |
| Barometric pressure | 1010 hPa | 1009 hPa | 1009 hPa | 1011 hPa | 1010 hPa | 1008 hPa | 1008 hPa | 1009 hPa |
| Cloud cover | 11% | 12% | 10% | 7% | 5% | 3% | 1% | 0% |
| Heat index | 29°C (84°F) | 29°C (84°F) | 29°C (84°F) | 30°C (85°F) | 27°C (81°F) | 27°C (80°F) | 28°C (83°F) | 29°C (84°F) |
| Dew point | 22°C (71°F) | 21°C (70°F) | 21°C (71°F) | 22°C (72°F) | 21°C (69°F) | 20°C (68°F) | 21°C (70°F) | 22°C (71°F) |
| Wind | ||||||||
| Speed | 7km/h (4mph) | 6km/h (4mph) | 10km/h (6mph) | 15km/h (9mph) | 19km/h (12mph) | 19km/h (12mph) | 18km/h (11mph) | 13km/h (8mph) |
| Gusts | 10km/h (6mph) | 9km/h (5mph) | 14km/h (9mph) | 21km/h (13mph) | 24km/h (15mph) | 33km/h (20mph) | 30km/h (18mph) | 19km/h (12mph) |
| Direction | 48° NE | 26° NNE | 14° NNE | 11° NNE | 13° NNE | 20° NNE | 32° NNE | 52° NE |
| Wind chill | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 25°C (77°F) | 25°C (76°F) | 26°C (79°F) | 26°C (80°F) |
| Waves | ||||||||
| Height | 0.7m (2.3ft) | 0.6m (2.0ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.6m (2.0ft) | 0.7m (2.3ft) | 0.7m (2.3ft) |
| Direction | 32° NNE | 35° NE | 37° NE | 38° NE | 37° NE | 32° NNE | 27° NNE | 23° NNE |
| Period | 4.8 sec. | 4.6 sec. | 4.4 sec. | 5.5 sec. | 6.1 sec. | 6.2 sec. | 6.2 sec. | 5.1 sec. |
| Significant height | 1.0m (3.3ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.9m (3ft) |
| Sea water temperature | ||||||||
| Water temperature | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) |
Sea weather on Sunday 21 December 2025
On Sunday 21 December 2025, the sun will rise at 06:32 and will set at 18:05 on the beach(es) of Koh Tao. The outside temperature will be a high of 81°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 13.1mph km/h (with gusts up to 17.4mph). Wave height will be up to 2.6ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 25°C (77°F) | 25°C (76°F) | 26°C (79°F) | 27°C (80°F) |
| Perceived temperature | 29°C (84°F) | 29°C (83°F) | 29°C (84°F) | 29°C (85°F) | 27°C (81°F) | 27°C (80°F) | 28°C (83°F) | 29°C (84°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 72% | 70% | 70% | 73% | 76% | 74% | 74% | 75% |
| Barometric pressure | 1009 hPa | 1009 hPa | 1009 hPa | 1011 hPa | 1010 hPa | 1008 hPa | 1009 hPa | 1011 hPa |
| Cloud cover | 0% | 1% | 2% | 2% | 2% | 1% | 0% | 0% |
| Heat index | 29°C (84°F) | 29°C (83°F) | 29°C (84°F) | 29°C (85°F) | 27°C (81°F) | 27°C (80°F) | 28°C (83°F) | 29°C (84°F) |
| Dew point | 21°C (70°F) | 21°C (69°F) | 21°C (69°F) | 22°C (71°F) | 20°C (69°F) | 20°C (68°F) | 21°C (70°F) | 22°C (71°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 9km/h (6mph) | 12km/h (7mph) | 17km/h (11mph) | 19km/h (12mph) | 21km/h (13mph) | 20km/h (13mph) | 17km/h (10mph) |
| Gusts | 14km/h (9mph) | 13km/h (8mph) | 16km/h (10mph) | 23km/h (15mph) | 23km/h (14mph) | 24km/h (15mph) | 28km/h (18mph) | 24km/h (15mph) |
| Direction | 26° NNE | 12° NNE | 10° N | 12° NNE | 21° NNE | 27° NNE | 32° NNE | 43° NE |
| Wind chill | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 27°C (80°F) | 25°C (77°F) | 25°C (76°F) | 26°C (79°F) | 27°C (80°F) |
| Waves | ||||||||
| Height | 0.6m (2.0ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.3m (1.0ft) | 0.4m (1.3ft) | 0.6m (2.0ft) | 0.8m (2.6ft) | 0.8m (2.6ft) |
| Direction | 22° NNE | 23° NNE | 24° NNE | 28° NNE | 26° NNE | 24° NNE | 22° NNE | 22° NNE |
| Period | 4.6 sec. | 4.4 sec. | 4.2 sec. | 5.1 sec. | 5.6 sec. | 5.5 sec. | 5.4 sec. | 4.9 sec. |
| Significant height | 0.9m (3ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.4m (1.3ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.9m (3ft) |
| Sea water temperature | ||||||||
| Water temperature | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) |