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 |
|---|---|---|---|---|
| Sunday 14 December 2025 | 52°F to 56°F | 23mph | discouraged | all the sea weather |
| Monday 15 December 2025 | 54°F to 56°F | 24.9mph | not recommended | all the sea weather |
| Tuesday 16 December 2025 | 52°F to 54°F | 14.9mph | not recommended | all the sea weather |
| Wednesday 17 December 2025 | 52°F to 54°F | 21.8mph | discouraged | all the sea weather |
| Thursday 18 December 2025 | 52°F to 56°F | 24.2mph | not recommended | all the sea weather |
| Friday 19 December 2025 | 49°F to 52°F | 18mph | not recommended | all the sea weather |
| Saturday 20 December 2025 | 49°F to 52°F | 13.1mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Sein island (Île-de-Sein)
Sea weather on Sunday 14 December 2025
On Sunday 14 December 2025, the sun will rise at 09:02 and will set at 17:27 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 23mph km/h (with gusts up to 33.6mph). Wave height will be up to 8.9ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | | |  |  | |  |
| Outside temperature | 11°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 13°C (55°F) |
| Perceived temperature | 9°C (49°F) | 10°C (49°F) | 9°C (49°F) | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) | 9°C (49°F) | 10°C (50°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 69% | 75% | 79% | 80% | 85% | 90% | 90% | 90% |
| Barometric pressure | 1026 hPa | 1025 hPa | 1023 hPa | 1022 hPa | 1021 hPa | 1018 hPa | 1015 hPa | 1013 hPa |
| Cloud cover | 5% | 8% | 22% | 4% | 89% | 38% | 33% | 81% |
| Heat index | 11°C (53°F) | 12°C (53°F) | 12°C (53°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 13°C (55°F) |
| Dew point | 6°C (43°F) | 7°C (45°F) | 8°C (47°F) | 9°C (48°F) | 10°C (50°F) | 11°C (51°F) | 11°C (51°F) | 11°C (52°F) |
| Wind | ||||||||
| Speed | 17km/h (11mph) | 19km/h (12mph) | 23km/h (14mph) | 24km/h (15mph) | 31km/h (19mph) | 31km/h (19mph) | 33km/h (21mph) | 37km/h (23mph) |
| Gusts | 23km/h (14mph) | 25km/h (16mph) | 31km/h (19mph) | 33km/h (21mph) | 44km/h (28mph) | 47km/h (29mph) | 36km/h (22mph) | 54km/h (33mph) |
| Direction | 170° S | 190° S | 181° S | 186° S | 188° S | 181° S | 182° S | 180° S |
| Wind chill | 9°C (49°F) | 10°C (49°F) | 9°C (49°F) | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) | 9°C (49°F) | 10°C (50°F) |
| Waves | ||||||||
| Height | 2.3m (7.7ft) | 2.2m (7.1ft) | 2.1m (6.8ft) | 2.1m (6.8ft) | 2.2m (7.3ft) | 2.5m (8.1ft) | 2.6m (8.6ft) | 2.7m (8.9ft) |
| Direction | 283° WNW | 285° WNW | 287° WNW | 284° WNW | 285° WNW | 284° WNW | 282° WNW | 276° W |
| Period | 14.0 sec. | 13.4 sec. | 13.2 sec. | 12.7 sec. | 12.6 sec. | 12.7 sec. | 12.8 sec. | 14.1 sec. |
| Significant height | 0.4m (1.3ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.9m (3ft) | 1.0m (3.3ft) | 0.9m (3ft) | 1.2m (3.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) |
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 09:03 and will set at 17:27 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 54°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 28mph km/h (with gusts up to 34.2mph). Wave height will be up to 11.2ft 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 (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (55°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) |
| Perceived temperature | 10°C (50°F) | 10°C (50°F) | 11°C (51°F) | 10°C (51°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 90% | 90% | 88% | 87% | 89% | 87% | 85% | 86% |
| Barometric pressure | 1011 hPa | 1009 hPa | 1006 hPa | 1005 hPa | 1005 hPa | 1003 hPa | 1003 hPa | 1003 hPa |
| Cloud cover | 85% | 54% | 100% | 87% | 84% | 100% | 100% | 100% |
| Heat index | 13°C (55°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (55°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) |
| Dew point | 11°C (52°F) | 11°C (53°F) | 11°C (52°F) | 11°C (52°F) | 11°C (51°F) | 10°C (51°F) | 10°C (50°F) | 10°C (49°F) |
| Wind | ||||||||
| Speed | 38km/h (24mph) | 37km/h (23mph) | 34km/h (21mph) | 41km/h (26mph) | 45km/h (28mph) | 40km/h (25mph) | 37km/h (23mph) | 40km/h (25mph) |
| Gusts | 54km/h (34mph) | 53km/h (33mph) | 48km/h (30mph) | 48km/h (30mph) | 45km/h (28mph) | 41km/h (25mph) | 39km/h (24mph) | 55km/h (34mph) |
| Direction | 189° S | 195° SSW | 205° SSW | 199° SSW | 207° SSW | 201° SSW | 192° SSW | 177° S |
| Wind chill | 10°C (50°F) | 10°C (50°F) | 11°C (51°F) | 10°C (51°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) |
| Waves | ||||||||
| Height | 2.8m (9.1ft) | 2.8m (9.1ft) | 2.8m (9.2ft) | 2.8m (9.3ft) | 3.0m (9.7ft) | 3.2m (10.5ft) | 3.4m (11.2ft) | 3.3m (10.7ft) |
| Direction | 277° W | 276° W | 275° W | 274° W | 273° W | 272° W | 272° W | 278° W |
| Period | 13.9 sec. | 13.8 sec. | 13.6 sec. | 13.5 sec. | 13.4 sec. | 13.4 sec. | 13.4 sec. | 13.2 sec. |
| Significant height | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.6m (5.2ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 09:04 and will set at 17:27 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 54°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! Be careful, the sea will be generally rough with a wind speed of up to 34.8mph km/h (with gusts up to 45.4mph). Wave height will be up to 10.2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 12°C (54°F) | 12°C (54°F) | 11°C (53°F) | 11°C (51°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 11°C (53°F) |
| Perceived temperature | 9°C (49°F) | 10°C (50°F) | 8°C (46°F) | 6°C (43°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 9°C (48°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 87% | 83% | 85% | 85% | 77% | 68% | 69% | 69% |
| Barometric pressure | 1002 hPa | 1003 hPa | 1005 hPa | 1009 hPa | 1013 hPa | 1014 hPa | 1017 hPa | 1019 hPa |
| Cloud cover | 37% | 95% | 96% | 100% | 97% | 57% | 70% | 82% |
| Heat index | 12°C (54°F) | 12°C (54°F) | 11°C (53°F) | 11°C (51°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 11°C (53°F) |
| Dew point | 10°C (51°F) | 9°C (49°F) | 9°C (48°F) | 8°C (47°F) | 7°C (44°F) | 5°C (42°F) | 5°C (42°F) | 6°C (43°F) |
| Wind | ||||||||
| Speed | 37km/h (23mph) | 17km/h (11mph) | 47km/h (29mph) | 56km/h (35mph) | 37km/h (23mph) | 40km/h (25mph) | 31km/h (19mph) | 24km/h (15mph) |
| Gusts | 51km/h (32mph) | 24km/h (15mph) | 62km/h (39mph) | 73km/h (45mph) | 52km/h (32mph) | 58km/h (36mph) | 47km/h (29mph) | 34km/h (21mph) |
| Direction | 197° SSW | 332° NNW | 337° NNW | 1° N | 358° N | 352° N | 354° N | 348° NNW |
| Wind chill | 9°C (49°F) | 10°C (50°F) | 8°C (46°F) | 6°C (43°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 9°C (48°F) |
| Waves | ||||||||
| Height | 3.1m (10.1ft) | 3.0m (9.7ft) | 2.9m (9.7ft) | 2.9m (9.5ft) | 2.8m (9.2ft) | 2.7m (8.9ft) | 2.7m (8.8ft) | 2.6m (8.5ft) |
| Direction | 278° W | 279° W | 280° W | 280° W | 281° W | 280° W | 279° W | 278° W |
| Period | 14.7 sec. | 14.6 sec. | 14.8 sec. | 14.6 sec. | 14.4 sec. | 14.3 sec. | 14.2 sec. | 14.2 sec. |
| Significant height | 1.0m (3.3ft) | 0.9m (3ft) | 1.2m (3.9ft) | 1.2m (3.9ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.9m (3ft) | 0.7m (2.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) |
Sea weather on Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 09:04 and will set at 17:27 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 54°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 22.4mph km/h (with gusts up to 32.9mph). Wave height will be up to 8.2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | |  | | |
| Outside temperature | 11°C (52°F) | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 12°C (53°F) | 12°C (53°F) | 12°C (54°F) |
| Perceived temperature | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (49°F) | 9°C (47°F) | 9°C (48°F) | 9°C (47°F) | 9°C (49°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 67% | 64% | 63% | 63% | 67% | 69% | 72% | 73% |
| Barometric pressure | 1020 hPa | 1021 hPa | 1022 hPa | 1023 hPa | 1024 hPa | 1022 hPa | 1022 hPa | 1022 hPa |
| Cloud cover | 36% | 30% | 16% | 38% | 74% | 69% | 75% | 64% |
| Heat index | 11°C (52°F) | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 12°C (53°F) | 12°C (53°F) | 12°C (54°F) |
| Dew point | 5°C (41°F) | 4°C (40°F) | 4°C (39°F) | 4°C (40°F) | 5°C (42°F) | 6°C (43°F) | 7°C (44°F) | 8°C (46°F) |
| Wind | ||||||||
| Speed | 18km/h (11mph) | 12km/h (7mph) | 14km/h (9mph) | 14km/h (9mph) | 25km/h (16mph) | 30km/h (19mph) | 36km/h (22mph) | 35km/h (22mph) |
| Gusts | 25km/h (16mph) | 16km/h (10mph) | 20km/h (12mph) | 19km/h (12mph) | 36km/h (22mph) | 43km/h (27mph) | 53km/h (33mph) | 49km/h (31mph) |
| Direction | 339° NNW | 314° NW | 268° W | 225° SW | 216° SW | 211° SSW | 212° SSW | 200° SSW |
| Wind chill | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (49°F) | 9°C (47°F) | 9°C (48°F) | 9°C (47°F) | 9°C (49°F) |
| Waves | ||||||||
| Height | 2.5m (8.3ft) | 2.5m (8.1ft) | 2.4m (7.9ft) | 2.3m (7.5ft) | 2.1m (6.9ft) | 1.9m (6.3ft) | 1.7m (5.7ft) | 1.8m (6.0ft) |
| Direction | 277° W | 278° W | 278° W | 277° W | 278° W | 279° W | 280° W | 281° WNW |
| Period | 14.0 sec. | 13.8 sec. | 13.6 sec. | 13.5 sec. | 13.3 sec. | 13.0 sec. | 12.7 sec. | 12.6 sec. |
| Significant height | 0.5m (1.6ft) | 0.3m (1ft) | 0.1m (0.3ft) | 0.4m (1.3ft) | 0.2m (0.7ft) | 0.4m (1.3ft) | 0.6m (2ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 09:05 and will set at 17:28 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. 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 35.4mph km/h (with gusts up to 37.3mph). Wave height will be up to 19.4ft 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) | 12°C (54°F) | 13°C (55°F) | 13°C (55°F) | 12°C (54°F) | 12°C (53°F) | 11°C (53°F) |
| Perceived temperature | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (47°F) | 8°C (46°F) | 8°C (46°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0.1in | 0in | 0in |
| Humidity | 75% | 77% | 79% | 85% | 86% | 88% | 84% | 69% |
| Barometric pressure | 1021 hPa | 1019 hPa | 1016 hPa | 1014 hPa | 1011 hPa | 1009 hPa | 1009 hPa | 1011 hPa |
| Cloud cover | 94% | 19% | 26% | 67% | 89% | 100% | 100% | 83% |
| Heat index | 13°C (55°F) | 13°C (55°F) | 12°C (54°F) | 13°C (55°F) | 13°C (55°F) | 12°C (54°F) | 12°C (53°F) | 11°C (53°F) |
| Dew point | 8°C (47°F) | 9°C (47°F) | 9°C (48°F) | 10°C (50°F) | 10°C (51°F) | 11°C (51°F) | 9°C (48°F) | 6°C (42°F) |
| Wind | ||||||||
| Speed | 37km/h (23mph) | 38km/h (24mph) | 44km/h (28mph) | 50km/h (31mph) | 51km/h (32mph) | 57km/h (35mph) | 45km/h (28mph) | 39km/h (24mph) |
| Gusts | 50km/h (31mph) | 52km/h (33mph) | 60km/h (37mph) | 51km/h (32mph) | 52km/h (32mph) | 60km/h (37mph) | 57km/h (36mph) | 55km/h (34mph) |
| Direction | 191° SSW | 185° S | 178° S | 174° S | 178° S | 192° SSW | 245° WSW | 265° W |
| Wind chill | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (47°F) | 8°C (46°F) | 8°C (46°F) |
| Waves | ||||||||
| Height | 2.2m (7.2ft) | 3.6m (11.9ft) | 4.8m (15.7ft) | 5.6m (18.2ft) | 5.8m (19.2ft) | 5.9m (19.4ft) | 5.7m (18.7ft) | 5.5m (18.0ft) |
| Direction | 282° WNW | 271° W | 267° W | 265° W | 263° W | 262° W | 263° W | 263° W |
| Period | 12.4 sec. | 15.3 sec. | 19.3 sec. | 19.7 sec. | 19.3 sec. | 18.9 sec. | 18.3 sec. | 17.8 sec. |
| Significant height | 1.0m (3.3ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.4m (4.6ft) | 1.6m (5.2ft) | 1.7m (5.6ft) | 1.6m (5.2ft) | 1.4m (4.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 09:06 and will set at 17:28 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 52°F t and a low of 49°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 25.5mph km/h (with gusts up to 35.4mph). Wave height will be up to 25.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | |  | | |
| Outside temperature | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 9°C (49°F) | 10°C (50°F) | 11°C (51°F) | 11°C (52°F) |
| Perceived temperature | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 7°C (45°F) | 5°C (41°F) | 6°C (43°F) | 7°C (45°F) | 8°C (46°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0.1in | 0in | 0in | 0in |
| Humidity | 67% | 64% | 59% | 57% | 78% | 77% | 69% | 66% |
| Barometric pressure | 1014 hPa | 1015 hPa | 1016 hPa | 1018 hPa | 1019 hPa | 1020 hPa | 1022 hPa | 1024 hPa |
| Cloud cover | 84% | 53% | 33% | 28% | 75% | 98% | 65% | 52% |
| Heat index | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 9°C (49°F) | 10°C (50°F) | 11°C (51°F) | 11°C (52°F) |
| Dew point | 5°C (42°F) | 5°C (40°F) | 3°C (38°F) | 3°C (37°F) | 5°C (42°F) | 6°C (43°F) | 5°C (42°F) | 5°C (41°F) |
| Wind | ||||||||
| Speed | 41km/h (25mph) | 41km/h (25mph) | 37km/h (23mph) | 36km/h (22mph) | 41km/h (25mph) | 41km/h (26mph) | 36km/h (22mph) | 29km/h (18mph) |
| Gusts | 55km/h (34mph) | 54km/h (33mph) | 49km/h (30mph) | 48km/h (30mph) | 54km/h (33mph) | 57km/h (35mph) | 52km/h (32mph) | 42km/h (26mph) |
| Direction | 266° W | 266° W | 263° W | 260° W | 254° WSW | 298° WNW | 322° NW | 323° NW |
| Wind chill | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 7°C (45°F) | 5°C (41°F) | 6°C (43°F) | 7°C (45°F) | 8°C (46°F) |
| Waves | ||||||||
| Height | 5.6m (18.4ft) | 5.9m (19.4ft) | 6.0m (19.7ft) | 7.0m (23.0ft) | 7.7m (25.3ft) | 7.3m (24.0ft) | 6.8m (22.3ft) | 6.4m (21.0ft) |
| Direction | 264° W | 265° W | 266° W | 261° W | 250° WSW | 252° WSW | 257° WSW | 262° W |
| Period | 17.6 sec. | 17.5 sec. | 17.1 sec. | 16.5 sec. | 16.1 sec. | 16.0 sec. | 15.7 sec. | 15.0 sec. |
| Significant height | 1.6m (5.2ft) | 1.9m (6.2ft) | 2.0m (6.6ft) | 2.2m (7.2ft) | 1.9m (6.2ft) | 1.6m (5.2ft) | 1.5m (4.9ft) | 1.4m (4.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) |
Sea weather on Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 09:06 and will set at 17:28 on the beach(es) of Sein island (Île-de-Sein). The outside temperature will be a high of 52°F t and a low of 49°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 18.6mph). Wave height will be up to 19.4ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | |  |  | | | |
| Outside temperature | 11°C (52°F) | 11°C (51°F) | 11°C (51°F) | 10°C (50°F) | 10°C (49°F) | 9°C (49°F) | 10°C (49°F) | 9°C (49°F) |
| Perceived temperature | 8°C (47°F) | 9°C (48°F) | 10°C (50°F) | 9°C (49°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 64% | 61% | 58% | 60% | 67% | 69% | 68% | 70% |
| Barometric pressure | 1025 hPa | 1025 hPa | 1025 hPa | 1025 hPa | 1024 hPa | 1023 hPa | 1022 hPa | 1023 hPa |
| Cloud cover | 52% | 49% | 24% | 19% | 16% | 16% | 36% | 52% |
| Heat index | 11°C (52°F) | 11°C (51°F) | 11°C (51°F) | 10°C (50°F) | 10°C (49°F) | 9°C (49°F) | 10°C (49°F) | 9°C (49°F) |
| Dew point | 4°C (40°F) | 4°C (38°F) | 3°C (37°F) | 3°C (37°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 4°C (40°F) |
| Wind | ||||||||
| Speed | 21km/h (13mph) | 13km/h (8mph) | 7km/h (4mph) | 8km/h (5mph) | 13km/h (8mph) | 14km/h (9mph) | 17km/h (11mph) | 21km/h (13mph) |
| Gusts | 29km/h (18mph) | 18km/h (11mph) | 9km/h (6mph) | 11km/h (7mph) | 20km/h (13mph) | 22km/h (14mph) | 26km/h (16mph) | 30km/h (19mph) |
| Direction | 322° NW | 321° NW | 325° NW | 193° SSW | 139° SE | 149° SSE | 136° SE | 123° ESE |
| Wind chill | 8°C (47°F) | 9°C (48°F) | 10°C (50°F) | 9°C (49°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) |
| Waves | ||||||||
| Height | 5.9m (19.4ft) | 5.3m (17.4ft) | 4.8m (15.7ft) | 4.3m (14.1ft) | 3.9m (12.8ft) | 3.5m (11.5ft) | 3.2m (10.5ft) | 2.9m (9.5ft) |
| Direction | 267° W | 269° W | 272° W | 274° W | 276° W | 278° W | 278° W | 279° W |
| Period | 14.3 sec. | 13.9 sec. | 13.7 sec. | 13.4 sec. | 13.0 sec. | 12.9 sec. | 12.7 sec. | 12.3 sec. |
| Significant height | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.2m (0.7ft) | 0.2m (0.7ft) |
| Sea water temperature | ||||||||
| Water temperature | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) | 13°C (56°F) |