Sea weather in Sein island (Île-de-Sein) in Brittany All the beach weather in Sein island (Île-de-Sein)
All the essential weather information for enjoying the beach in Sein island (Île-de-Sein) in Brittany, 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 Sein island (Île-de-Sein) over the next 7 days?
Discover the best moment to go to the beach in Sein island (Île-de-Sein) in Brittany this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Sein island (Île-de-Sein). 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 | 52°F to 59°F | 34.2mph | not recommended | all the sea weather |
| Saturday 6 December 2025 | 56°F to 58°F | 24.2mph | not recommended | all the sea weather |
| Sunday 7 December 2025 | 56°F to 59°F | 21.8mph | not recommended | all the sea weather |
| Monday 8 December 2025 | 54°F to 59°F | 26.1mph | not recommended | all the sea weather |
| Tuesday 9 December 2025 | 58°F to 59°F | 34.8mph | not recommended | all the sea weather |
| Wednesday 10 December 2025 | 52°F to 56°F | 18mph | discouraged | all the sea weather |
| Thursday 11 December 2025 | 56°F to 56°F | 21.1mph | not recommended | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Sein island (Île-de-Sein)
Sea weather on Friday 5 December 2025
On Friday 5 December 2025, the sun will rise at 08:53 and will set at 17:27 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 59°F t and a low of 52°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 34.2mph km/h (with gusts up to 34.8mph). Wave height will be up to 14.4ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  |  | |  | | |  | |
| Outside temperature | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 11°C (52°F) | 12°C (54°F) | 15°C (58°F) | 13°C (56°F) | 13°C (56°F) |
| Perceived temperature | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 8°C (46°F) | 8°C (47°F) | 12°C (53°F) | 10°C (50°F) | 10°C (50°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0.1in | 0in | 0in | 0in |
| Humidity | 52% | 57% | 57% | 79% | 89% | 91% | 79% | 78% |
| Barometric pressure | 1008 hPa | 1008 hPa | 1008 hPa | 1006 hPa | 1003 hPa | 998 hPa | 999 hPa | 1001 hPa |
| Cloud cover | 76% | 100% | 85% | 100% | 100% | 100% | 79% | 86% |
| Heat index | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 11°C (52°F) | 12°C (54°F) | 15°C (58°F) | 13°C (56°F) | 13°C (56°F) |
| Dew point | 2°C (36°F) | 3°C (38°F) | 4°C (38°F) | 8°C (46°F) | 10°C (50°F) | 13°C (56°F) | 10°C (50°F) | 9°C (49°F) |
| Wind | ||||||||
| Speed | 25km/h (15mph) | 22km/h (14mph) | 28km/h (17mph) | 38km/h (23mph) | 48km/h (30mph) | 51km/h (32mph) | 49km/h (30mph) | 55km/h (34mph) |
| Gusts | 33km/h (21mph) | 30km/h (19mph) | 37km/h (23mph) | 48km/h (30mph) | 52km/h (32mph) | 54km/h (33mph) | 51km/h (32mph) | 56km/h (35mph) |
| Direction | 300° WNW | 251° WSW | 227° SW | 183° S | 193° SSW | 225° SW | 256° WSW | 245° WSW |
| Wind chill | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 8°C (46°F) | 8°C (47°F) | 12°C (53°F) | 10°C (50°F) | 10°C (50°F) |
| Waves | ||||||||
| Height | 3.9m (12.7ft) | 4.0m (13.0ft) | 4.0m (13.1ft) | 3.9m (13.0ft) | 3.9m (12.7ft) | 3.9m (12.9ft) | 4.1m (13.4ft) | 4.4m (14.3ft) |
| Direction | 283° WNW | 282° WNW | 283° WNW | 282° WNW | 283° WNW | 283° WNW | 287° WNW | 263° W |
| Period | 13.6 sec. | 14.5 sec. | 14.8 sec. | 16.6 sec. | 16.4 sec. | 16.2 sec. | 15.3 sec. | 10.1 sec. |
| Significant height | 0.9m (3ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 1.3m (4.3ft) | 2.3m (7.5ft) | 1.5m (4.9ft) | 1.6m (5.2ft) | 1.8m (5.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) |
Sea weather on Saturday 6 December 2025
On Saturday 6 December 2025, the sun will rise at 08:54 and will set at 17:27 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 58°F t and a low of 56°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 37.3mph km/h (with gusts up to 39.2mph). Wave height will be up to 20.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | |  | | | | |
| Outside temperature | 13°C (56°F) | 13°C (56°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 14°C (56°F) |
| Perceived temperature | 10°C (49°F) | 9°C (49°F) | 9°C (48°F) | 9°C (49°F) | 9°C (49°F) | 10°C (50°F) | 10°C (50°F) | 11°C (51°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 76% | 74% | 76% | 73% | 77% | 78% | 77% | 85% |
| Barometric pressure | 1001 hPa | 1002 hPa | 1004 hPa | 1006 hPa | 1008 hPa | 1008 hPa | 1009 hPa | 1010 hPa |
| Cloud cover | 76% | 87% | 80% | 75% | 59% | 76% | 30% | 65% |
| Heat index | 13°C (56°F) | 13°C (56°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 14°C (56°F) |
| Dew point | 9°C (48°F) | 9°C (47°F) | 9°C (48°F) | 8°C (47°F) | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 11°C (52°F) |
| Wind | ||||||||
| Speed | 57km/h (36mph) | 60km/h (37mph) | 58km/h (36mph) | 57km/h (36mph) | 48km/h (30mph) | 43km/h (27mph) | 39km/h (24mph) | 39km/h (24mph) |
| Gusts | 61km/h (38mph) | 63km/h (39mph) | 61km/h (38mph) | 61km/h (38mph) | 50km/h (31mph) | 49km/h (31mph) | 41km/h (26mph) | 57km/h (35mph) |
| Direction | 250° WSW | 254° WSW | 258° WSW | 263° W | 263° W | 258° WSW | 253° WSW | 236° WSW |
| Wind chill | 10°C (49°F) | 9°C (49°F) | 9°C (48°F) | 9°C (49°F) | 9°C (49°F) | 10°C (50°F) | 10°C (50°F) | 11°C (51°F) |
| Waves | ||||||||
| Height | 4.9m (15.9ft) | 5.3m (17.3ft) | 5.8m (19.0ft) | 6.2m (20.2ft) | 6.1m (20.2ft) | 5.9m (19.3ft) | 5.5m (18.1ft) | 5.2m (16.9ft) |
| Direction | 274° W | 277° W | 279° W | 275° W | 270° W | 269° W | 272° W | 271° W |
| Period | 11.4 sec. | 12.5 sec. | 13.8 sec. | 15.3 sec. | 15.9 sec. | 16.0 sec. | 15.8 sec. | 15.6 sec. |
| Significant height | 2.1m (6.9ft) | 2.1m (6.9ft) | 2.0m (6.6ft) | 1.8m (5.9ft) | 1.6m (5.2ft) | 1.6m (5.2ft) | 1.3m (4.3ft) | 1.4m (4.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) |
Sea weather on Sunday 7 December 2025
On Sunday 7 December 2025, the sun will rise at 08:55 and will set at 17:27 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 59°F t and a low of 56°F. Precipitation is in the forecast (0.3in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 37.3mph km/h (with gusts up to 41.6mph). Wave height will be up to 18ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 13°C (56°F) | 14°C (58°F) | 14°C (58°F) | 15°C (58°F) | 14°C (58°F) | 14°C (58°F) | 14°C (57°F) | 14°C (57°F) |
| Perceived temperature | 11°C (52°F) | 12°C (53°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (53°F) | 12°C (53°F) |
| Precipitation | 0in | 0.1in | 0.1in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 93% | 96% | 94% | 93% | 92% | 91% | 95% | 96% |
| Barometric pressure | 1009 hPa | 1007 hPa | 1005 hPa | 1005 hPa | 1006 hPa | 1007 hPa | 1008 hPa | 1009 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Heat index | 13°C (56°F) | 14°C (58°F) | 14°C (58°F) | 15°C (58°F) | 14°C (58°F) | 14°C (58°F) | 14°C (57°F) | 14°C (57°F) |
| Dew point | 12°C (54°F) | 14°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (55°F) | 13°C (56°F) | 13°C (56°F) |
| Wind | ||||||||
| Speed | 26km/h (16mph) | 39km/h (24mph) | 55km/h (34mph) | 59km/h (37mph) | 60km/h (38mph) | 57km/h (35mph) | 32km/h (20mph) | 35km/h (21mph) |
| Gusts | 37km/h (23mph) | 40km/h (25mph) | 60km/h (37mph) | 66km/h (41mph) | 67km/h (42mph) | 59km/h (37mph) | 35km/h (22mph) | 35km/h (22mph) |
| Direction | 213° SSW | 219° SW | 230° SW | 232° SW | 236° SW | 237° WSW | 248° WSW | 236° SW |
| Wind chill | 11°C (52°F) | 12°C (53°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (53°F) | 12°C (53°F) |
| Waves | ||||||||
| Height | 4.8m (15.6ft) | 4.5m (14.9ft) | 4.6m (15.1ft) | 5.1m (16.6ft) | 5.4m (17.7ft) | 5.5m (17.9ft) | 4.9m (16.2ft) | 4.5m (14.8ft) |
| Direction | 271° W | 270° W | 273° W | 272° W | 254° WSW | 255° WSW | 252° WSW | 252° WSW |
| Period | 15.5 sec. | 14.9 sec. | 14.3 sec. | 13.9 sec. | 10.7 sec. | 11.5 sec. | 12.0 sec. | 11.7 sec. |
| Significant height | 1.2m (3.9ft) | 1.7m (5.6ft) | 2.1m (6.9ft) | 2.4m (7.9ft) | 2.4m (7.9ft) | 1.9m (6.2ft) | 0.5m (1.6ft) | 1.0m (3.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) |
Sea weather on Monday 8 December 2025
On Monday 8 December 2025, the sun will rise at 08:56 and will set at 17:26 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 59°F t and a low of 54°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 26.1mph km/h (with gusts up to 31.1mph). Wave height will be up to 15.4ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | | | | | | |
| Outside temperature | 14°C (58°F) | 14°C (58°F) | 14°C (57°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (56°F) | 14°C (57°F) |
| Perceived temperature | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 13°C (55°F) | 12°C (53°F) | 10°C (51°F) | 11°C (52°F) | 11°C (52°F) |
| Precipitation | 0in | 0in | 0.1in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 95% | 95% | 95% | 89% | 89% | 94% | 96% | 94% |
| Barometric pressure | 1009 hPa | 1010 hPa | 1010 hPa | 1010 hPa | 1011 hPa | 1010 hPa | 1010 hPa | 1010 hPa |
| Cloud cover | 100% | 100% | 100% | 95% | 100% | 100% | 100% | 100% |
| Heat index | 14°C (58°F) | 14°C (58°F) | 14°C (57°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (56°F) | 14°C (57°F) |
| Dew point | 13°C (56°F) | 13°C (56°F) | 13°C (55°F) | 11°C (52°F) | 11°C (51°F) | 12°C (53°F) | 13°C (55°F) | 13°C (55°F) |
| Wind | ||||||||
| Speed | 33km/h (21mph) | 42km/h (26mph) | 29km/h (18mph) | 5km/h (3mph) | 11km/h (7mph) | 21km/h (13mph) | 27km/h (17mph) | 42km/h (26mph) |
| Gusts | 50km/h (31mph) | 48km/h (30mph) | 44km/h (28mph) | 7km/h (5mph) | 16km/h (10mph) | 31km/h (19mph) | 42km/h (26mph) | 43km/h (27mph) |
| Direction | 217° SW | 236° WSW | 234° SW | 239° WSW | 204° SSW | 176° S | 211° SSW | 208° SSW |
| Wind chill | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 13°C (55°F) | 12°C (53°F) | 10°C (51°F) | 11°C (52°F) | 11°C (52°F) |
| Waves | ||||||||
| Height | 4.3m (14.0ft) | 4.2m (13.7ft) | 4.2m (13.8ft) | 4.0m (13.0ft) | 3.9m (12.8ft) | 4.0m (13.2ft) | 4.3m (14.3ft) | 4.7m (15.3ft) |
| Direction | 251° WSW | 249° WSW | 247° WSW | 242° WSW | 242° WSW | 260° W | 259° W | 263° W |
| Period | 11.8 sec. | 11.3 sec. | 23.5 sec. | 11.4 sec. | 11.3 sec. | 11.2 sec. | 10.9 sec. | 17.8 sec. |
| Significant height | 0.8m (2.6ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 0.7m (2.3ft) | 0.9m (3ft) | 0.6m (2ft) | 0.8m (2.6ft) | 1.3m (4.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) |
Sea weather on Tuesday 9 December 2025
On Tuesday 9 December 2025, the sun will rise at 08:58 and will set at 17:26 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 59°F t and a low of 58°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 41mph km/h (with gusts up to 42.9mph). Wave height will be up to 16.4ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 14°C (58°F) | 14°C (57°F) | 14°C (57°F) | 15°C (58°F) | 15°C (59°F) | 15°C (59°F) | 15°C (58°F) | 14°C (58°F) |
| Perceived temperature | 12°C (53°F) | 10°C (51°F) | 10°C (51°F) | 12°C (53°F) | 15°C (59°F) | 13°C (55°F) | 11°C (52°F) | 11°C (52°F) |
| Precipitation | 0in | 0.1in | 0.1in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 94% | 92% | 86% | 78% | 73% | 72% | 78% | 85% |
| Barometric pressure | 1010 hPa | 1008 hPa | 1006 hPa | 1004 hPa | 1004 hPa | 1003 hPa | 1003 hPa | 1004 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Heat index | 14°C (58°F) | 14°C (57°F) | 14°C (57°F) | 15°C (58°F) | 15°C (59°F) | 15°C (59°F) | 15°C (58°F) | 14°C (58°F) |
| Dew point | 13°C (56°F) | 12°C (54°F) | 12°C (53°F) | 11°C (52°F) | 10°C (50°F) | 10°C (50°F) | 11°C (51°F) | 12°C (53°F) |
| Wind | ||||||||
| Speed | 41km/h (26mph) | 55km/h (34mph) | 65km/h (40mph) | 62km/h (39mph) | 60km/h (37mph) | 64km/h (40mph) | 66km/h (41mph) | 56km/h (35mph) |
| Gusts | 41km/h (26mph) | 58km/h (36mph) | 69km/h (43mph) | 67km/h (42mph) | 65km/h (40mph) | 67km/h (42mph) | 68km/h (42mph) | 57km/h (35mph) |
| Direction | 210° SSW | 188° S | 188° S | 193° SSW | 198° SSW | 204° SSW | 209° SSW | 217° SW |
| Wind chill | 12°C (53°F) | 10°C (51°F) | 10°C (51°F) | 12°C (53°F) | 15°C (59°F) | 13°C (55°F) | 11°C (52°F) | 11°C (52°F) |
| Waves | ||||||||
| Height | 4.8m (15.6ft) | 4.7m (15.3ft) | 4.8m (15.6ft) | 4.9m (16.0ft) | 4.9m (16.0ft) | 4.8m (15.7ft) | 4.8m (15.7ft) | 5.0m (16.4ft) |
| Direction | 262° W | 253° WSW | 252° WSW | 252° WSW | 255° WSW | 258° WSW | 258° WSW | 254° WSW |
| Period | 17.6 sec. | 17.5 sec. | 17.4 sec. | 17.2 sec. | 16.8 sec. | 16.2 sec. | 15.8 sec. | 14.9 sec. |
| Significant height | 1.6m (5.2ft) | 1.1m (3.6ft) | 1.4m (4.6ft) | 1.7m (5.6ft) | 1.8m (5.9ft) | 1.7m (5.6ft) | 1.7m (5.6ft) | 1.7m (5.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) |
Sea weather on Wednesday 10 December 2025
On Wednesday 10 December 2025, the sun will rise at 08:59 and will set at 17:26 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 56°F t and a low of 52°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 24.2mph km/h (with gusts up to 34.2mph). Wave height will be up to 17.7ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | |  | |  | |
| Outside temperature | 13°C (56°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 12°C (54°F) | 12°C (54°F) | 11°C (52°F) | 12°C (54°F) |
| Perceived temperature | 11°C (52°F) | 11°C (51°F) | 10°C (51°F) | 10°C (50°F) | 9°C (49°F) | 9°C (48°F) | 8°C (46°F) | 9°C (49°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 90% | 92% | 86% | 80% | 79% | 79% | 80% | 82% |
| Barometric pressure | 1005 hPa | 1005 hPa | 1007 hPa | 1009 hPa | 1012 hPa | 1015 hPa | 1017 hPa | 1019 hPa |
| Cloud cover | 100% | 96% | 98% | 49% | 23% | 16% | 6% | 5% |
| Heat index | 13°C (56°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 12°C (54°F) | 12°C (54°F) | 11°C (52°F) | 12°C (54°F) |
| Dew point | 12°C (53°F) | 11°C (52°F) | 11°C (51°F) | 9°C (49°F) | 9°C (48°F) | 9°C (47°F) | 8°C (46°F) | 9°C (48°F) |
| Wind | ||||||||
| Speed | 27km/h (17mph) | 21km/h (13mph) | 29km/h (18mph) | 38km/h (24mph) | 39km/h (24mph) | 35km/h (22mph) | 32km/h (20mph) | 29km/h (18mph) |
| Gusts | 31km/h (19mph) | 29km/h (18mph) | 40km/h (25mph) | 53km/h (33mph) | 55km/h (34mph) | 45km/h (28mph) | 37km/h (23mph) | 39km/h (24mph) |
| Direction | 260° W | 273° W | 258° WSW | 258° WSW | 260° W | 258° WSW | 251° WSW | 235° SW |
| Wind chill | 11°C (52°F) | 11°C (51°F) | 10°C (51°F) | 10°C (50°F) | 9°C (49°F) | 9°C (48°F) | 8°C (46°F) | 9°C (49°F) |
| Waves | ||||||||
| Height | 5.2m (17.1ft) | 5.4m (17.7ft) | 5.4m (17.7ft) | 5.3m (17.4ft) | 5.2m (17.1ft) | 4.8m (15.7ft) | 4.3m (14.1ft) | 3.9m (12.8ft) |
| Direction | 250° WSW | 249° WSW | 244° WSW | 247° WSW | 250° WSW | 251° WSW | 256° WSW | 261° W |
| Period | 14.6 sec. | 15.1 sec. | 15.4 sec. | 14.9 sec. | 14.7 sec. | 14.4 sec. | 13.5 sec. | 12.8 sec. |
| Significant height | 1.4m (4.6ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 0.9m (3ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) |
Sea weather on Thursday 11 December 2025
On Thursday 11 December 2025, the sun will rise at 08:59 and will set at 17:26 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 56°F t and a low of 56°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 25.5mph km/h (with gusts up to 33.6mph). Wave height will be up to 14.1ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | |  | | | |
| Outside temperature | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (56°F) |
| Perceived temperature | 11°C (51°F) | 10°C (51°F) | 10°C (50°F) | 10°C (50°F) | 9°C (49°F) | 10°C (49°F) | 10°C (50°F) | 11°C (51°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 83% | 83% | 83% | 83% | 83% | 86% | 85% | 83% |
| Barometric pressure | 1019 hPa | 1019 hPa | 1018 hPa | 1017 hPa | 1017 hPa | 1016 hPa | 1015 hPa | 1015 hPa |
| Cloud cover | 8% | 7% | 12% | 26% | 28% | 32% | 50% | 54% |
| Heat index | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (56°F) |
| Dew point | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (51°F) | 10°C (51°F) | 10°C (51°F) |
| Wind | ||||||||
| Speed | 28km/h (18mph) | 31km/h (19mph) | 36km/h (22mph) | 39km/h (24mph) | 41km/h (25mph) | 40km/h (25mph) | 36km/h (22mph) | 34km/h (21mph) |
| Gusts | 40km/h (25mph) | 43km/h (27mph) | 50km/h (31mph) | 54km/h (34mph) | 46km/h (29mph) | 41km/h (26mph) | 38km/h (23mph) | 46km/h (29mph) |
| Direction | 211° SSW | 197° SSW | 187° S | 183° S | 178° S | 179° S | 190° S | 197° SSW |
| Wind chill | 11°C (51°F) | 10°C (51°F) | 10°C (50°F) | 10°C (50°F) | 9°C (49°F) | 10°C (49°F) | 10°C (50°F) | 11°C (51°F) |
| Waves | ||||||||
| Height | 3.6m (11.8ft) | 3.4m (11.2ft) | 3.5m (11.5ft) | 4.1m (13.5ft) | 4.3m (14.1ft) | 4.2m (13.8ft) | 4.0m (13.1ft) | 4.0m (13.1ft) |
| Direction | 262° W | 260° W | 259° W | 258° WSW | 255° WSW | 257° WSW | 260° W | 262° W |
| Period | 12.2 sec. | 11.7 sec. | 11.6 sec. | 10.9 sec. | 11.1 sec. | 11.8 sec. | 11.8 sec. | 11.9 sec. |
| Significant height | 1.0m (3.3ft) | 1.3m (4.3ft) | 1.8m (5.9ft) | 2.1m (6.9ft) | 1.2m (3.9ft) | 0.6m (2ft) | 1.1m (3.6ft) | 1.7m (5.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) | 14°C (56°F) |