Sea weather in Koumac in New Calendonia All the beach weather in Koumac
All the essential weather information for enjoying the beach in Koumac in New Calendonia, 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 Koumac over the next 7 days?
Discover the best moment to go to the beach in Koumac in New Calendonia this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Koumac. 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 | 72°F to 81°F | 13.1mph | discouraged | all the sea weather |
| Tuesday 16 December 2025 | 77°F to 79°F | 24.9mph | discouraged | all the sea weather |
| Wednesday 17 December 2025 | 77°F to 79°F | 21.8mph | discouraged | all the sea weather |
| Thursday 18 December 2025 | 77°F to 79°F | 17.4mph | discouraged | all the sea weather |
| Friday 19 December 2025 | 70°F to 79°F | 9.9mph | recommended | all the sea weather |
| Saturday 20 December 2025 | 72°F to 79°F | 11.8mph | discouraged | all the sea weather |
| Sunday 21 December 2025 | 72°F to 81°F | 7.5mph | recommended | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Koumac
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 05:18 and will set at 18:40 on the beach(es) of Koumac. The outside temperature will be a high of 81°F t and a low of 72°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 18mph). 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 | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 23°C (73°F) | 25°C (76°F) | 27°C (80°F) | 26°C (79°F) |
| Perceived temperature | 28°C (83°F) | 28°C (83°F) | 28°C (82°F) | 28°C (83°F) | 25°C (77°F) | 26°C (79°F) | 29°C (85°F) | 29°C (83°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 74% | 76% | 76% | 75% | 72% | 70% | 73% | 79% |
| Barometric pressure | 1009 hPa | 1008 hPa | 1009 hPa | 1010 hPa | 1009 hPa | 1009 hPa | 1010 hPa | 1011 hPa |
| Cloud cover | 87% | 89% | 79% | 16% | 5% | 10% | 64% | 37% |
| Heat index | 28°C (83°F) | 28°C (83°F) | 28°C (82°F) | 28°C (83°F) | 25°C (77°F) | 26°C (79°F) | 29°C (85°F) | 29°C (83°F) |
| Dew point | 21°C (70°F) | 21°C (71°F) | 21°C (70°F) | 21°C (70°F) | 17°C (63°F) | 19°C (66°F) | 22°C (71°F) | 22°C (72°F) |
| Wind | ||||||||
| Speed | 1km/h (1mph) | 8km/h (5mph) | 6km/h (4mph) | 5km/h (3mph) | 7km/h (4mph) | 12km/h (7mph) | 17km/h (10mph) | 21km/h (13mph) |
| Gusts | 2km/h (1mph) | 11km/h (7mph) | 9km/h (6mph) | 7km/h (4mph) | 15km/h (9mph) | 23km/h (14mph) | 23km/h (14mph) | 29km/h (18mph) |
| Direction | 186° S | 131° SE | 148° SSE | 140° SE | 232° SW | 233° SW | 172° S | 144° SE |
| Wind chill | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 23°C (73°F) | 25°C (76°F) | 27°C (80°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 0.8m (2.7ft) | 0.8m (2.7ft) | 0.8m (2.7ft) | 0.8m (2.8ft) | 0.8m (2.7ft) | 0.8m (2.6ft) | 0.8m (2.5ft) | 0.8m (2.6ft) |
| Direction | 154° SSE | 155° SSE | 155° SSE | 155° SSE | 156° SSE | 157° SSE | 158° SSE | 159° SSE |
| Period | 7.4 sec. | 7.3 sec. | 7.5 sec. | 7.5 sec. | 7.4 sec. | 7.4 sec. | 7.6 sec. | 9.3 sec. |
| Significant height | 0.8m (2.6ft) | 1.0m (3.3ft) | 1.1m (3.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 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 Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 05:18 and will set at 18:40 on the beach(es) of Koumac. The outside temperature will be a high of 79°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 24.9mph km/h (with gusts up to 34.2mph). 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 | 26°C (79°F) | 26°C (78°F) | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) |
| Perceived temperature | 28°C (83°F) | 28°C (83°F) | 28°C (83°F) | 29°C (83°F) | 28°C (82°F) | 28°C (83°F) | 29°C (83°F) | 28°C (83°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 80% | 80% | 78% | 78% | 78% | 81% | 81% | 81% |
| Barometric pressure | 1010 hPa | 1009 hPa | 1010 hPa | 1011 hPa | 1010 hPa | 1010 hPa | 1011 hPa | 1012 hPa |
| Cloud cover | 53% | 68% | 76% | 61% | 28% | 72% | 61% | 61% |
| Heat index | 28°C (83°F) | 28°C (83°F) | 28°C (83°F) | 29°C (83°F) | 28°C (82°F) | 28°C (83°F) | 29°C (83°F) | 28°C (83°F) |
| Dew point | 22°C (72°F) | 22°C (72°F) | 22°C (71°F) | 22°C (72°F) | 21°C (71°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) |
| Wind | ||||||||
| Speed | 24km/h (15mph) | 24km/h (15mph) | 23km/h (14mph) | 24km/h (15mph) | 25km/h (16mph) | 28km/h (17mph) | 35km/h (22mph) | 40km/h (25mph) |
| Gusts | 33km/h (20mph) | 32km/h (20mph) | 31km/h (19mph) | 32km/h (20mph) | 39km/h (24mph) | 39km/h (24mph) | 48km/h (30mph) | 55km/h (34mph) |
| Direction | 149° SSE | 145° SE | 139° SE | 142° SE | 169° SSE | 152° SSE | 151° SSE | 147° SSE |
| Wind chill | 26°C (79°F) | 26°C (78°F) | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 0.8m (2.7ft) | 0.9m (2.9ft) | 0.9m (3.0ft) | 0.9m (3.0ft) | 0.9m (3.1ft) | 1.1m (3.5ft) | 1.4m (4.5ft) | 1.6m (5.1ft) |
| Direction | 161° SSE | 163° SSE | 156° SSE | 157° SSE | 153° SSE | 151° SSE | 156° SSE | 154° SSE |
| Period | 9.4 sec. | 10.2 sec. | 7.7 sec. | 7.8 sec. | 9.0 sec. | 8.8 sec. | 14.5 sec. | 14.3 sec. |
| Significant height | 0.7m (2.3ft) | 0.6m (2ft) | 0.6m (2ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.9m (3ft) | 1.1m (3.6ft) | 1.2m (3.9ft) |
| 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 05:18 and will set at 18:41 on the beach(es) of Koumac. The outside temperature will be a high of 79°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 22.4mph km/h (with gusts up to 30.5mph). Wave height will be up to 6.2ft 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 (79°F) | 26°C (79°F) | 25°C (78°F) | 26°C (78°F) | 26°C (78°F) | 26°C (79°F) |
| Perceived temperature | 29°C (83°F) | 28°C (83°F) | 28°C (83°F) | 28°C (83°F) | 28°C (82°F) | 28°C (82°F) | 28°C (83°F) | 28°C (83°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 80% | 80% | 79% | 80% | 78% | 79% | 80% | 80% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1011 hPa | 1012 hPa | 1011 hPa | 1010 hPa | 1011 hPa | 1012 hPa |
| Cloud cover | 72% | 70% | 76% | 54% | 73% | 50% | 67% | 62% |
| Heat index | 29°C (83°F) | 28°C (83°F) | 28°C (83°F) | 28°C (83°F) | 28°C (82°F) | 28°C (82°F) | 28°C (83°F) | 28°C (83°F) |
| Dew point | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 22°C (72°F) | 21°C (70°F) | 22°C (71°F) | 22°C (72°F) | 22°C (72°F) |
| Wind | ||||||||
| Speed | 33km/h (21mph) | 28km/h (17mph) | 23km/h (15mph) | 28km/h (17mph) | 30km/h (19mph) | 33km/h (21mph) | 36km/h (22mph) | 35km/h (22mph) |
| Gusts | 46km/h (28mph) | 44km/h (27mph) | 32km/h (20mph) | 38km/h (24mph) | 47km/h (29mph) | 47km/h (29mph) | 49km/h (30mph) | 48km/h (30mph) |
| Direction | 139° SE | 140° SE | 133° SE | 139° SE | 151° SSE | 152° SSE | 147° SSE | 137° SE |
| Wind chill | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 25°C (78°F) | 26°C (78°F) | 26°C (78°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 1.6m (5.2ft) | 1.4m (4.7ft) | 1.4m (4.6ft) | 1.3m (4.4ft) | 1.4m (4.6ft) | 1.6m (5.2ft) | 1.8m (5.8ft) | 1.9m (6.2ft) |
| Direction | 153° SSE | 153° SSE | 154° SSE | 202° SSW | 201° SSW | 200° SSW | 200° SSW | 199° SSW |
| Period | 13.9 sec. | 13.5 sec. | 20.0 sec. | 19.3 sec. | 18.8 sec. | 18.5 sec. | 17.8 sec. | 17.2 sec. |
| Significant height | 0.8m (2.6ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 1.2m (3.9ft) | 1.2m (3.9ft) | 1.0m (3.3ft) | 0.7m (2.3ft) |
| 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) | 25°C (77°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 05:19 and will set at 18:41 on the beach(es) of Koumac. The outside temperature will be a high of 79°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 17.4mph km/h (with gusts up to 24.2mph). Wave height will be up to 6.2ft 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 (78°F) | 26°C (78°F) | 26°C (79°F) | 25°C (78°F) | 26°C (78°F) | 26°C (78°F) | 26°C (79°F) |
| Perceived temperature | 28°C (83°F) | 28°C (82°F) | 28°C (82°F) | 28°C (82°F) | 27°C (81°F) | 28°C (82°F) | 28°C (82°F) | 28°C (82°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 77% | 74% | 75% | 71% | 70% | 73% | 75% | 73% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1012 hPa | 1012 hPa | 1011 hPa | 1010 hPa | 1011 hPa | 1012 hPa |
| Cloud cover | 75% | 78% | 76% | 38% | 16% | 76% | 75% | 72% |
| Heat index | 28°C (83°F) | 28°C (82°F) | 28°C (82°F) | 28°C (82°F) | 27°C (81°F) | 28°C (82°F) | 28°C (82°F) | 28°C (82°F) |
| Dew point | 22°C (71°F) | 21°C (70°F) | 21°C (70°F) | 20°C (69°F) | 20°C (67°F) | 21°C (69°F) | 21°C (70°F) | 21°C (69°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 7km/h (4mph) | 16km/h (10mph) | 6km/h (4mph) | 11km/h (7mph) | 21km/h (13mph) | 28km/h (17mph) | 28km/h (18mph) |
| Gusts | 14km/h (9mph) | 10km/h (6mph) | 23km/h (14mph) | 8km/h (5mph) | 18km/h (11mph) | 30km/h (19mph) | 39km/h (24mph) | 39km/h (24mph) |
| Direction | 118° ESE | 127° SE | 132° SE | 108° ESE | 186° S | 169° SSE | 148° SSE | 142° SE |
| Wind chill | 26°C (79°F) | 26°C (78°F) | 26°C (78°F) | 26°C (79°F) | 25°C (78°F) | 26°C (78°F) | 26°C (78°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 1.9m (6.2ft) | 1.9m (6.2ft) | 1.9m (6.1ft) | 1.8m (6.1ft) | 1.8m (5.9ft) | 1.8m (5.8ft) | 1.8m (5.8ft) | 1.8m (5.9ft) |
| Direction | 199° SSW | 199° SSW | 199° SSW | 199° SSW | 198° SSW | 198° SSW | 198° SSW | 198° SSW |
| Period | 6.5 sec. | 15.7 sec. | 15.3 sec. | 14.9 sec. | 14.6 sec. | 14.4 sec. | 14.2 sec. | 14.0 sec. |
| Significant height | 0.7m (2.3ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.3m (1ft) | 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 05:19 and will set at 18:42 on the beach(es) of Koumac. The outside temperature will be a high of 79°F t and a low of 70°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 14.3mph). Wave height will be up to 5.9ft 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) | 25°C (77°F) | 22°C (71°F) | 24°C (74°F) | 26°C (78°F) | 26°C (78°F) |
| Perceived temperature | 28°C (82°F) | 27°C (81°F) | 27°C (80°F) | 27°C (80°F) | 22°C (71°F) | 25°C (77°F) | 27°C (81°F) | 27°C (81°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 68% | 67% | 67% | 66% | 66% | 66% | 67% | 71% |
| Barometric pressure | 1011 hPa | 1009 hPa | 1011 hPa | 1011 hPa | 1010 hPa | 1010 hPa | 1010 hPa | 1011 hPa |
| Cloud cover | 89% | 10% | 0% | 0% | 0% | 9% | 37% | 84% |
| Heat index | 28°C (82°F) | 27°C (81°F) | 27°C (80°F) | 27°C (80°F) | 25°C (76°F) | 25°C (77°F) | 27°C (81°F) | 27°C (81°F) |
| Dew point | 20°C (68°F) | 19°C (66°F) | 19°C (65°F) | 18°C (65°F) | 15°C (59°F) | 17°C (62°F) | 19°C (67°F) | 20°C (68°F) |
| Wind | ||||||||
| Speed | 7km/h (4mph) | 9km/h (5mph) | 9km/h (6mph) | 6km/h (4mph) | 11km/h (7mph) | 11km/h (7mph) | 12km/h (7mph) | 16km/h (10mph) |
| Gusts | 9km/h (6mph) | 12km/h (7mph) | 13km/h (8mph) | 8km/h (5mph) | 23km/h (14mph) | 22km/h (14mph) | 17km/h (10mph) | 22km/h (14mph) |
| Direction | 38° NE | 92° E | 126° SE | 162° SSE | 187° S | 179° S | 146° SE | 149° SSE |
| Wind chill | 26°C (79°F) | 26°C (78°F) | 25°C (77°F) | 25°C (77°F) | 22°C (71°F) | 24°C (74°F) | 26°C (78°F) | 26°C (78°F) |
| Waves | ||||||||
| Height | 1.8m (6.1ft) | 1.8m (6.0ft) | 1.8m (5.8ft) | 1.7m (5.6ft) | 1.7m (5.4ft) | 1.6m (5.3ft) | 1.6m (5.1ft) | 1.5m (5.0ft) |
| Direction | 198° SSW | 197° SSW | 197° SSW | 197° SSW | 202° SSW | 202° SSW | 202° SSW | 202° SSW |
| Period | 13.7 sec. | 13.5 sec. | 13.4 sec. | 13.3 sec. | 13.0 sec. | 12.8 sec. | 12.5 sec. | 12.3 sec. |
| Significant height | 0.3m (1ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.5m (1.6ft) | 0.5m (1.6ft) |
| 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 Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 05:20 and will set at 18:43 on the beach(es) of Koumac. The outside temperature will be a high of 79°F t and a low of 72°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 14.3mph km/h (with gusts up to 19.9mph). 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 | 26°C (78°F) | 26°C (78°F) | 26°C (78°F) | 24°C (76°F) | 23°C (73°F) | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) |
| Perceived temperature | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 26°C (79°F) | 25°C (78°F) | 27°C (81°F) | 28°C (82°F) | 28°C (82°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 71% | 68% | 66% | 66% | 66% | 67% | 72% | 75% |
| Barometric pressure | 1010 hPa | 1009 hPa | 1010 hPa | 1011 hPa | 1011 hPa | 1010 hPa | 1010 hPa | 1011 hPa |
| Cloud cover | 24% | 8% | 6% | 7% | 12% | 23% | 27% | 14% |
| Heat index | 27°C (81°F) | 27°C (81°F) | 27°C (81°F) | 26°C (79°F) | 25°C (78°F) | 27°C (81°F) | 28°C (82°F) | 28°C (82°F) |
| Dew point | 20°C (68°F) | 19°C (67°F) | 19°C (66°F) | 18°C (64°F) | 16°C (61°F) | 19°C (67°F) | 20°C (69°F) | 21°C (70°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 7km/h (4mph) | 4km/h (3mph) | 4km/h (2mph) | 11km/h (7mph) | 18km/h (11mph) | 23km/h (15mph) | 19km/h (12mph) |
| Gusts | 19km/h (12mph) | 10km/h (6mph) | 6km/h (4mph) | 7km/h (4mph) | 20km/h (13mph) | 26km/h (16mph) | 32km/h (20mph) | 26km/h (16mph) |
| Direction | 94° E | 125° SE | 251° WSW | 100° E | 191° S | 179° S | 144° SE | 105° ESE |
| Wind chill | 26°C (78°F) | 26°C (78°F) | 26°C (78°F) | 24°C (76°F) | 23°C (73°F) | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) |
| Waves | ||||||||
| Height | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.4m (4.6ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.5m (4.9ft) |
| Direction | 202° SSW | 202° SSW | 201° SSW | 201° SSW | 201° SSW | 201° SSW | 201° SSW | 201° SSW |
| Period | 12.1 sec. | 12.0 sec. | 11.9 sec. | 11.8 sec. | 11.6 sec. | 11.3 sec. | 11.0 sec. | 10.9 sec. |
| Significant height | 0.4m (1.3ft) | 0.3m (1ft) | 0.3m (1ft) | 0.7m (2.3ft) | 1.1m (3.6ft) | 1.3m (4.3ft) | 1.4m (4.6ft) | 1.2m (3.9ft) |
| 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 05:20 and will set at 18:43 on the beach(es) of Koumac. The outside temperature will be a high of 81°F t and a low of 72°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 16.2mph). 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 | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) | 24°C (76°F) | 23°C (74°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) |
| Perceived temperature | 28°C (82°F) | 28°C (82°F) | 27°C (81°F) | 26°C (79°F) | 26°C (78°F) | 28°C (82°F) | 28°C (82°F) | 28°C (83°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 70% | 69% | 70% | 69% | 69% | 71% | 74% | 72% |
| Barometric pressure | 1011 hPa | 1010 hPa | 1011 hPa | 1012 hPa | 1012 hPa | 1011 hPa | 1011 hPa | 1012 hPa |
| Cloud cover | 7% | 5% | 9% | 10% | 17% | 31% | 37% | 30% |
| Heat index | 28°C (82°F) | 28°C (82°F) | 27°C (81°F) | 26°C (79°F) | 26°C (78°F) | 28°C (82°F) | 28°C (82°F) | 28°C (83°F) |
| Dew point | 20°C (68°F) | 20°C (68°F) | 20°C (68°F) | 18°C (65°F) | 17°C (63°F) | 20°C (68°F) | 21°C (70°F) | 21°C (70°F) |
| Wind | ||||||||
| Speed | 6km/h (4mph) | 8km/h (5mph) | 9km/h (5mph) | 6km/h (4mph) | 14km/h (9mph) | 15km/h (10mph) | 17km/h (11mph) | 12km/h (7mph) |
| Gusts | 8km/h (5mph) | 11km/h (7mph) | 12km/h (7mph) | 12km/h (8mph) | 26km/h (16mph) | 22km/h (14mph) | 24km/h (15mph) | 18km/h (11mph) |
| Direction | 46° NE | 77° ENE | 121° ESE | 147° SSE | 187° S | 173° S | 150° SSE | 100° E |
| Wind chill | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) | 24°C (76°F) | 23°C (74°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) |
| Waves | ||||||||
| Height | 1.5m (4.9ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.2m (3.9ft) |
| Direction | 200° SSW | 200° SSW | 201° SSW | 203° SSW | 204° SSW | 203° SSW | 202° SSW | 202° SSW |
| Period | 9.2 sec. | 5.8 sec. | 7.5 sec. | 10.9 sec. | 10.6 sec. | 12.1 sec. | 15.6 sec. | 14.8 sec. |
| Significant height | 1.0m (3.3ft) | 0.7m (2.3ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.3m (4.3ft) |
| 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) |