Sea weather in Dehiwala-Mount Lavinia in Sri Lanka All the beach weather in Dehiwala-Mount Lavinia
All the essential weather information for enjoying the beach in Dehiwala-Mount Lavinia in Sri Lanka, 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 Dehiwala-Mount Lavinia over the next 7 days?
Discover the best moment to go to the beach in Dehiwala-Mount Lavinia in Sri Lanka this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Dehiwala-Mount Lavinia. 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 |
|---|---|---|---|---|
| Friday 5 December 2025 | 76°F to 81°F | 6.8mph | recommended | all the sea weather |
| Saturday 6 December 2025 | 76°F to 81°F | 8.1mph | recommended | all the sea weather |
| Sunday 7 December 2025 | 74°F to 81°F | 3.7mph | recommended | all the sea weather |
| Monday 8 December 2025 | 76°F to 81°F | 13.1mph | discouraged | all the sea weather |
| Tuesday 9 December 2025 | 76°F to 81°F | 16.8mph | discouraged | all the sea weather |
| Wednesday 10 December 2025 | 77°F to 81°F | 19.3mph | discouraged | all the sea weather |
| Thursday 11 December 2025 | 76°F to 81°F | 15.5mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Dehiwala-Mount Lavinia
Sea weather on Friday 5 December 2025
On Friday 5 December 2025, the sun will rise at 06:09 and will set at 17:54 on the beach(es) of Dehiwala-Mount Lavinia. The outside temperature will be a high of 81°F t and a low of 76°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 11.8mph km/h (with gusts up to 16.8mph). 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 | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) | 27°C (80°F) | 24°C (74°F) | 27°C (81°F) | 27°C (80°F) | 26°C (79°F) |
| Perceived temperature | 29°C (84°F) | 29°C (84°F) | 28°C (83°F) | 30°C (85°F) | 25°C (78°F) | 30°C (87°F) | 29°C (85°F) | 29°C (85°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 82% | 83% | 84% | 77% | 75% | 77% | 81% | 83% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1012 hPa | 1013 hPa | 1011 hPa | 1009 hPa | 1011 hPa | 1012 hPa |
| Cloud cover | 11% | 19% | 84% | 25% | 80% | 78% | 74% | 80% |
| Heat index | 29°C (84°F) | 29°C (84°F) | 28°C (83°F) | 30°C (85°F) | 25°C (78°F) | 30°C (87°F) | 29°C (85°F) | 29°C (85°F) |
| Dew point | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 22°C (72°F) | 19°C (66°F) | 23°C (73°F) | 23°C (73°F) | 23°C (74°F) |
| Wind | ||||||||
| Speed | 5km/h (3mph) | 12km/h (7mph) | 11km/h (7mph) | 6km/h (4mph) | 9km/h (6mph) | 19km/h (12mph) | 15km/h (10mph) | 11km/h (7mph) |
| Gusts | 8km/h (5mph) | 18km/h (11mph) | 16km/h (10mph) | 8km/h (5mph) | 20km/h (12mph) | 27km/h (17mph) | 25km/h (15mph) | 17km/h (11mph) |
| Direction | 62° ENE | 135° SE | 121° ESE | 117° ESE | 282° WNW | 269° W | 320° NW | 358° N |
| Wind chill | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) | 27°C (80°F) | 24°C (74°F) | 27°C (81°F) | 27°C (80°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 0.6m (1.9ft) | 0.6m (1.9ft) | 0.6m (1.8ft) | 0.5m (1.7ft) | 0.5m (1.7ft) | 0.5m (1.7ft) | 0.5m (1.6ft) | 0.5m (1.7ft) |
| Direction | 230° SW | 230° SW | 230° SW | 230° SW | 230° SW | 229° SW | 228° SW | 228° SW |
| Period | 5.4 sec. | 5.3 sec. | 5.3 sec. | 5.3 sec. | 5.2 sec. | 11.8 sec. | 5.8 sec. | 5.7 sec. |
| Significant height | 0.5m (1.6ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.4m (1.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 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) | 28°C (83°F) |
Sea weather on Saturday 6 December 2025
On Saturday 6 December 2025, the sun will rise at 06:10 and will set at 17:54 on the beach(es) of Dehiwala-Mount Lavinia. The outside temperature will be a high of 81°F t and a low of 76°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 8.1mph km/h (with gusts up to 14.9mph). 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 | 26°C (78°F) | 25°C (77°F) | 25°C (77°F) | 26°C (79°F) | 26°C (79°F) | 27°C (81°F) | 27°C (80°F) | 25°C (78°F) |
| Perceived temperature | 28°C (83°F) | 27°C (81°F) | 27°C (81°F) | 29°C (84°F) | 29°C (84°F) | 30°C (85°F) | 29°C (85°F) | 28°C (82°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0.1in | 0.1in |
| Humidity | 87% | 88% | 86% | 79% | 75% | 72% | 79% | 86% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1012 hPa | 1014 hPa | 1011 hPa | 1009 hPa | 1011 hPa | 1013 hPa |
| Cloud cover | 71% | 86% | 17% | 16% | 77% | 54% | 50% | 82% |
| Heat index | 28°C (83°F) | 27°C (81°F) | 27°C (81°F) | 29°C (84°F) | 29°C (84°F) | 30°C (85°F) | 29°C (85°F) | 28°C (82°F) |
| Dew point | 23°C (74°F) | 23°C (73°F) | 22°C (72°F) | 22°C (72°F) | 22°C (71°F) | 22°C (71°F) | 23°C (73°F) | 23°C (73°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 12km/h (8mph) | 11km/h (7mph) | 6km/h (4mph) | 10km/h (6mph) | 9km/h (6mph) | 9km/h (6mph) | 13km/h (8mph) |
| Gusts | 12km/h (8mph) | 19km/h (11mph) | 16km/h (10mph) | 8km/h (5mph) | 14km/h (9mph) | 13km/h (8mph) | 15km/h (9mph) | 24km/h (15mph) |
| Direction | 65° ENE | 65° ENE | 46° NE | 37° NE | 296° WNW | 269° W | 333° NNW | 117° ESE |
| Wind chill | 26°C (78°F) | 25°C (77°F) | 25°C (77°F) | 26°C (79°F) | 26°C (79°F) | 27°C (81°F) | 27°C (80°F) | 25°C (78°F) |
| Waves | ||||||||
| Height | 0.5m (1.8ft) | 0.6m (1.9ft) | 0.5m (1.8ft) | 0.5m (1.7ft) | 0.5m (1.7ft) | 0.5m (1.8ft) | 0.7m (2.4ft) | 0.7m (2.4ft) |
| Direction | 228° SW | 228° SW | 227° SW | 227° SW | 229° SW | 229° SW | 229° SW | 313° NW |
| Period | 4.3 sec. | 4.6 sec. | 4.8 sec. | 5.0 sec. | 5.0 sec. | 4.8 sec. | 4.7 sec. | 5.0 sec. |
| Significant height | 0.5m (1.6ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.7m (2.3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 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) | 28°C (83°F) |
Sea weather on Sunday 7 December 2025
On Sunday 7 December 2025, the sun will rise at 06:10 and will set at 17:55 on the beach(es) of Dehiwala-Mount Lavinia. The outside temperature will be a high of 81°F t and a low of 74°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 10.6mph km/h (with gusts up to 19.9mph). 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 | 24°C (75°F) | 24°C (76°F) | 25°C (76°F) | 26°C (79°F) | 26°C (79°F) | 25°C (77°F) | 26°C (79°F) | 27°C (80°F) |
| Perceived temperature | 27°C (80°F) | 27°C (80°F) | 27°C (81°F) | 28°C (83°F) | 28°C (83°F) | 27°C (80°F) | 29°C (84°F) | 29°C (85°F) |
| Precipitation | 0.1in | 0in | 0in | 0in | 0in | 0in | 0.1in | 0in |
| Humidity | 92% | 87% | 85% | 80% | 78% | 75% | 83% | 78% |
| Barometric pressure | 1012 hPa | 1011 hPa | 1013 hPa | 1014 hPa | 1012 hPa | 1009 hPa | 1011 hPa | 1013 hPa |
| Cloud cover | 59% | 80% | 46% | 18% | 86% | 81% | 78% | 63% |
| Heat index | 27°C (80°F) | 27°C (80°F) | 27°C (81°F) | 28°C (83°F) | 28°C (83°F) | 27°C (80°F) | 29°C (84°F) | 29°C (85°F) |
| Dew point | 23°C (73°F) | 22°C (71°F) | 22°C (72°F) | 22°C (72°F) | 22°C (71°F) | 20°C (68°F) | 23°C (74°F) | 22°C (72°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 3km/h (2mph) | 8km/h (5mph) | 6km/h (4mph) | 12km/h (7mph) | 17km/h (10mph) | 13km/h (8mph) | 6km/h (4mph) |
| Gusts | 14km/h (9mph) | 4km/h (2mph) | 12km/h (7mph) | 8km/h (5mph) | 17km/h (10mph) | 32km/h (20mph) | 21km/h (13mph) | 11km/h (7mph) |
| Direction | 192° SSW | 40° NE | 56° NE | 42° NE | 313° NW | 298° WNW | 332° NNW | 3° N |
| Wind chill | 24°C (75°F) | 24°C (76°F) | 25°C (76°F) | 26°C (79°F) | 26°C (79°F) | 25°C (77°F) | 26°C (79°F) | 27°C (80°F) |
| Waves | ||||||||
| Height | 0.7m (2.3ft) | 0.6m (2.1ft) | 0.6m (2.0ft) | 0.5m (1.8ft) | 0.5m (1.7ft) | 0.5m (1.8ft) | 0.7m (2.2ft) | 0.7m (2.4ft) |
| Direction | 228° SW | 228° SW | 228° SW | 228° SW | 228° SW | 227° SW | 227° SW | 227° SW |
| Period | 5.3 sec. | 5.3 sec. | 5.3 sec. | 5.1 sec. | 4.8 sec. | 16.2 sec. | 16.3 sec. | 5.0 sec. |
| Significant height | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.7m (2.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 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) | 28°C (83°F) |
Sea weather on Monday 8 December 2025
On Monday 8 December 2025, the sun will rise at 06:11 and will set at 17:55 on the beach(es) of Dehiwala-Mount Lavinia. The outside temperature will be a high of 81°F t and a low of 76°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 19.3mph). 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 | 26°C (79°F) | 26°C (78°F) | 25°C (77°F) | 26°C (79°F) | 26°C (79°F) | 27°C (80°F) | 26°C (79°F) | 25°C (76°F) |
| Perceived temperature | 29°C (84°F) | 28°C (82°F) | 28°C (82°F) | 29°C (84°F) | 28°C (83°F) | 30°C (85°F) | 29°C (84°F) | 27°C (81°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0.1in |
| Humidity | 81% | 84% | 84% | 80% | 80% | 78% | 83% | 91% |
| Barometric pressure | 1012 hPa | 1010 hPa | 1012 hPa | 1014 hPa | 1011 hPa | 1009 hPa | 1011 hPa | 1013 hPa |
| Cloud cover | 80% | 71% | 30% | 20% | 70% | 83% | 75% | 80% |
| Heat index | 29°C (84°F) | 28°C (82°F) | 28°C (82°F) | 29°C (84°F) | 28°C (83°F) | 30°C (85°F) | 29°C (84°F) | 27°C (81°F) |
| Dew point | 23°C (73°F) | 23°C (73°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 23°C (73°F) | 23°C (73°F) | 23°C (74°F) |
| Wind | ||||||||
| Speed | 5km/h (3mph) | 11km/h (7mph) | 9km/h (6mph) | 5km/h (3mph) | 14km/h (9mph) | 15km/h (9mph) | 21km/h (13mph) | 21km/h (13mph) |
| Gusts | 8km/h (5mph) | 17km/h (10mph) | 13km/h (8mph) | 7km/h (4mph) | 21km/h (13mph) | 22km/h (13mph) | 31km/h (19mph) | 30km/h (19mph) |
| Direction | 108° ESE | 131° SE | 89° E | 26° NNE | 299° WNW | 307° NW | 6° N | 30° NNE |
| Wind chill | 26°C (79°F) | 26°C (78°F) | 25°C (77°F) | 26°C (79°F) | 26°C (79°F) | 27°C (80°F) | 26°C (79°F) | 25°C (76°F) |
| Waves | ||||||||
| Height | 0.7m (2.3ft) | 0.7m (2.2ft) | 0.6m (2.0ft) | 0.6m (1.9ft) | 0.5m (1.8ft) | 0.5m (1.8ft) | 0.5m (1.8ft) | 0.6m (1.9ft) |
| Direction | 228° SW | 227° SW | 227° SW | 228° SW | 228° SW | 228° SW | 228° SW | 228° SW |
| Period | 5.3 sec. | 5.3 sec. | 5.3 sec. | 15.2 sec. | 14.7 sec. | 14.5 sec. | 14.4 sec. | 4.5 sec. |
| Significant height | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 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) | 28°C (83°F) |
Sea weather on Tuesday 9 December 2025
On Tuesday 9 December 2025, the sun will rise at 06:11 and will set at 17:56 on the beach(es) of Dehiwala-Mount Lavinia. The outside temperature will be a high of 81°F t and a low of 76°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 29.2mph). Wave height will be up to 5.2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 24°C (75°F) | 24°C (74°F) | 24°C (75°F) | 26°C (78°F) | 27°C (81°F) | 26°C (80°F) | 27°C (80°F) | 26°C (79°F) |
| Perceived temperature | 27°C (80°F) | 26°C (78°F) | 26°C (79°F) | 28°C (83°F) | 30°C (86°F) | 29°C (85°F) | 30°C (85°F) | 29°C (84°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0.1in | 0in | 0in |
| Humidity | 93% | 92% | 90% | 83% | 73% | 81% | 83% | 85% |
| Barometric pressure | 1012 hPa | 1010 hPa | 1011 hPa | 1013 hPa | 1010 hPa | 1008 hPa | 1010 hPa | 1012 hPa |
| Cloud cover | 71% | 74% | 80% | 42% | 23% | 76% | 55% | 37% |
| Heat index | 27°C (80°F) | 26°C (78°F) | 26°C (79°F) | 28°C (83°F) | 30°C (86°F) | 29°C (85°F) | 30°C (85°F) | 29°C (84°F) |
| Dew point | 23°C (73°F) | 22°C (72°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 | 22km/h (14mph) | 11km/h (7mph) | 14km/h (9mph) | 20km/h (12mph) | 21km/h (13mph) | 30km/h (19mph) | 29km/h (18mph) | 27km/h (17mph) |
| Gusts | 30km/h (19mph) | 16km/h (10mph) | 20km/h (13mph) | 25km/h (16mph) | 31km/h (19mph) | 47km/h (30mph) | 42km/h (26mph) | 39km/h (24mph) |
| Direction | 34° NNE | 58° ENE | 24° NNE | 22° NNE | 349° NNW | 340° NNW | 238° WSW | 13° NNE |
| Wind chill | 24°C (75°F) | 24°C (74°F) | 24°C (75°F) | 26°C (78°F) | 27°C (81°F) | 26°C (80°F) | 27°C (80°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 0.6m (2.1ft) | 0.6m (2.1ft) | 1.4m (4.5ft) | 1.3m (4.4ft) | 1.3m (4.2ft) | 1.4m (4.4ft) | 1.5m (4.9ft) | 1.6m (5.2ft) |
| Direction | 229° SW | 229° SW | 218° SW | 217° SW | 217° SW | 217° SW | 217° SW | 217° SW |
| Period | 5.1 sec. | 5.4 sec. | 13.9 sec. | 13.7 sec. | 13.6 sec. | 13.5 sec. | 13.4 sec. | 13.4 sec. |
| Significant height | 0.6m (2ft) | 0.6m (2ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.5m (4.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 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) | 28°C (83°F) |
Sea weather on Wednesday 10 December 2025
On Wednesday 10 December 2025, the sun will rise at 06:12 and will set at 17:56 on the beach(es) of Dehiwala-Mount Lavinia. The outside temperature will be a high of 81°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 20.5mph km/h (with gusts up to 28mph). Wave height will be up to 4.9ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | |  | | | | | |
| Outside temperature | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 26°C (79°F) | 27°C (80°F) | 26°C (78°F) | 25°C (77°F) | 25°C (77°F) |
| Perceived temperature | 28°C (82°F) | 28°C (82°F) | 28°C (82°F) | 29°C (84°F) | 30°C (86°F) | 29°C (84°F) | 28°C (82°F) | 27°C (81°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 87% | 89% | 88% | 82% | 78% | 84% | 87% | 87% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1011 hPa | 1011 hPa | 1010 hPa | 1008 hPa | 1009 hPa | 1011 hPa |
| Cloud cover | 35% | 41% | 48% | 61% | 63% | 66% | 58% | 73% |
| Heat index | 28°C (82°F) | 28°C (82°F) | 28°C (82°F) | 29°C (84°F) | 30°C (86°F) | 29°C (84°F) | 28°C (82°F) | 27°C (81°F) |
| Dew point | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) |
| Wind | ||||||||
| Speed | 28km/h (17mph) | 29km/h (18mph) | 29km/h (18mph) | 29km/h (18mph) | 30km/h (19mph) | 33km/h (20mph) | 30km/h (19mph) | 31km/h (19mph) |
| Gusts | 40km/h (25mph) | 39km/h (24mph) | 39km/h (24mph) | 39km/h (24mph) | 43km/h (27mph) | 45km/h (28mph) | 42km/h (26mph) | 42km/h (26mph) |
| Direction | 19° NNE | 19° NNE | 21° NNE | 16° NNE | 0° N | 7° N | 20° NNE | 24° NNE |
| Wind chill | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 26°C (79°F) | 27°C (80°F) | 26°C (78°F) | 25°C (77°F) | 25°C (77°F) |
| Waves | ||||||||
| Height | 1.5m (4.9ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.4m (4.6ft) | 1.4m (4.6ft) | 1.4m (4.6ft) | 1.3m (4.3ft) |
| Direction | 217° SW | 217° SW | 217° SW | 217° SW | 217° SW | 218° SW | 217° SW | 216° SW |
| Period | 13.4 sec. | 13.3 sec. | 13.3 sec. | 13.4 sec. | 13.6 sec. | 14.0 sec. | 14.1 sec. | 11.3 sec. |
| Significant height | 1.5m (4.9ft) | 1.4m (4.6ft) | 1.4m (4.6ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.3m (4.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 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) | 28°C (83°F) |
Sea weather on Thursday 11 December 2025
On Thursday 11 December 2025, the sun will rise at 06:12 and will set at 17:56 on the beach(es) of Dehiwala-Mount Lavinia. The outside temperature will be a high of 81°F t and a low of 76°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 24.2mph). Wave height will be up to 4.6ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 25°C (76°F) | 25°C (76°F) | 25°C (76°F) | 26°C (78°F) | 26°C (80°F) | 26°C (79°F) | 26°C (78°F) | 25°C (77°F) |
| Perceived temperature | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 28°C (82°F) | 29°C (84°F) | 29°C (84°F) | 29°C (84°F) | 28°C (82°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0.1in | 0.1in | 0.1in |
| Humidity | 89% | 88% | 89% | 84% | 78% | 83% | 86% | 90% |
| Barometric pressure | 1010 hPa | 1009 hPa | 1010 hPa | 1011 hPa | 1009 hPa | 1008 hPa | 1009 hPa | 1010 hPa |
| Cloud cover | 70% | 94% | 72% | 36% | 35% | 37% | 54% | 71% |
| Heat index | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 28°C (82°F) | 29°C (84°F) | 29°C (84°F) | 29°C (84°F) | 28°C (82°F) |
| Dew point | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 23°C (73°F) | 22°C (72°F) | 23°C (73°F) | 23°C (74°F) | 23°C (74°F) |
| Wind | ||||||||
| Speed | 28km/h (18mph) | 24km/h (15mph) | 23km/h (14mph) | 21km/h (13mph) | 20km/h (12mph) | 28km/h (17mph) | 28km/h (17mph) | 25km/h (16mph) |
| Gusts | 39km/h (24mph) | 33km/h (21mph) | 30km/h (19mph) | 27km/h (17mph) | 29km/h (18mph) | 38km/h (23mph) | 30km/h (18mph) | 29km/h (18mph) |
| Direction | 23° NNE | 20° NNE | 30° NNE | 23° NNE | 120° ESE | 229° SW | 7° N | 20° NNE |
| Wind chill | 25°C (76°F) | 25°C (76°F) | 25°C (76°F) | 26°C (78°F) | 26°C (80°F) | 26°C (79°F) | 26°C (78°F) | 25°C (77°F) |
| Waves | ||||||||
| Height | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.4m (4.6ft) | 1.4m (4.6ft) |
| Direction | 216° SW | 215° SW | 215° SW | 214° SW | 215° SW | 216° SW | 215° SW | 212° SSW |
| Period | 6.0 sec. | 8.4 sec. | 13.2 sec. | 13.2 sec. | 13.1 sec. | 12.9 sec. | 12.7 sec. | 12.4 sec. |
| Significant height | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.3m (4.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 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) | 28°C (83°F) |