Sea weather in Saint-Briac-sur-Mer in Brittany All the beach weather in Saint-Briac-sur-Mer
All the essential weather information for enjoying the beach in Saint-Briac-sur-Mer 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 Saint-Briac-sur-Mer over the next 7 days?
Discover the best moment to go to the beach in Saint-Briac-sur-Mer in Brittany this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Saint-Briac-sur-Mer. 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 | 49°F to 56°F | 18.6mph | discouraged | all the sea weather |
| Tuesday 16 December 2025 | 47°F to 52°F | 11.2mph | discouraged | all the sea weather |
| Wednesday 17 December 2025 | 43°F to 49°F | 11.2mph | recommended | all the sea weather |
| Thursday 18 December 2025 | 43°F to 54°F | 19.3mph | not recommended | all the sea weather |
| Friday 19 December 2025 | 43°F to 52°F | 8.7mph | discouraged | all the sea weather |
| Saturday 20 December 2025 | 41°F to 47°F | 17.4mph | discouraged | all the sea weather |
| Sunday 21 December 2025 | 43°F to 49°F | 10.6mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Saint-Briac-sur-Mer
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 08:54 and will set at 17:13 on the beach(es) of Saint-Briac-sur-Mer. The outside temperature will be a high of 56°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 19.3mph km/h (with gusts up to 29.2mph). 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 | 9°C (47°F) | 11°C (52°F) | 10°C (50°F) | 12°C (53°F) | 12°C (54°F) | 13°C (55°F) | 11°C (51°F) | 11°C (53°F) |
| Perceived temperature | 5°C (41°F) | 8°C (46°F) | 7°C (45°F) | 9°C (48°F) | 10°C (50°F) | 10°C (50°F) | 8°C (46°F) | 8°C (47°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 93% | 82% | 92% | 83% | 83% | 79% | 86% | 82% |
| Barometric pressure | 1014 hPa | 1011 hPa | 1009 hPa | 1008 hPa | 1008 hPa | 1006 hPa | 1005 hPa | 1005 hPa |
| Cloud cover | 81% | 93% | 87% | 98% | 76% | 58% | 72% | 66% |
| Heat index | 9°C (47°F) | 11°C (52°F) | 10°C (50°F) | 12°C (53°F) | 12°C (54°F) | 13°C (55°F) | 11°C (51°F) | 11°C (53°F) |
| Dew point | 7°C (45°F) | 8°C (46°F) | 9°C (48°F) | 9°C (48°F) | 10°C (49°F) | 9°C (48°F) | 9°C (47°F) | 9°C (47°F) |
| Wind | ||||||||
| Speed | 24km/h (15mph) | 28km/h (17mph) | 26km/h (16mph) | 31km/h (19mph) | 27km/h (17mph) | 27km/h (17mph) | 27km/h (17mph) | 30km/h (18mph) |
| Gusts | 38km/h (24mph) | 43km/h (27mph) | 40km/h (25mph) | 47km/h (29mph) | 40km/h (25mph) | 42km/h (26mph) | 31km/h (19mph) | 46km/h (28mph) |
| Direction | 180° S | 185° S | 181° S | 189° S | 189° S | 171° S | 162° SSE | 171° S |
| Wind chill | 5°C (41°F) | 8°C (46°F) | 7°C (45°F) | 9°C (48°F) | 10°C (50°F) | 10°C (50°F) | 8°C (46°F) | 8°C (47°F) |
| Waves | ||||||||
| Height | 0.7m (2.2ft) | 0.7m (2.2ft) | 0.7m (2.4ft) | 0.7m (2.5ft) | 0.7m (2.4ft) | 0.7m (2.2ft) | 0.6m (2.1ft) | 0.6m (2.1ft) |
| Direction | 309° NW | 310° NW | 310° NW | 309° NW | 309° NW | 308° NW | 309° NW | 308° NW |
| Period | 13.0 sec. | 13.5 sec. | 13.6 sec. | 13.5 sec. | 13.3 sec. | 13.1 sec. | 13.2 sec. | 13.3 sec. |
| Significant height | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 1.1m (3.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) | 10°C (49°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 08:55 and will set at 17:13 on the beach(es) of Saint-Briac-sur-Mer. The outside temperature will be a high of 52°F t and a low of 47°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 22.4mph). 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 | 11°C (51°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (47°F) |
| Perceived temperature | 8°C (47°F) | 8°C (46°F) | 9°C (48°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 6°C (43°F) | 6°C (42°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 92% | 93% | 94% | 91% | 89% | 85% | 84% | 77% |
| Barometric pressure | 1005 hPa | 1006 hPa | 1006 hPa | 1009 hPa | 1012 hPa | 1013 hPa | 1015 hPa | 1018 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 53% | 85% | 18% |
| Heat index | 11°C (51°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (47°F) |
| Dew point | 9°C (49°F) | 9°C (48°F) | 9°C (49°F) | 8°C (47°F) | 8°C (46°F) | 7°C (44°F) | 7°C (44°F) | 5°C (41°F) |
| Wind | ||||||||
| Speed | 20km/h (13mph) | 18km/h (11mph) | 10km/h (6mph) | 20km/h (13mph) | 14km/h (9mph) | 15km/h (10mph) | 22km/h (14mph) | 18km/h (11mph) |
| Gusts | 32km/h (20mph) | 30km/h (18mph) | 16km/h (10mph) | 29km/h (18mph) | 20km/h (13mph) | 24km/h (15mph) | 36km/h (22mph) | 32km/h (20mph) |
| Direction | 172° S | 168° SSE | 204° SSW | 321° NW | 330° NNW | 345° NNW | 344° NNW | 355° N |
| Wind chill | 8°C (47°F) | 8°C (46°F) | 9°C (48°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 6°C (43°F) | 6°C (42°F) |
| Waves | ||||||||
| Height | 0.6m (1.8ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.5m (1.7ft) | 0.5m (1.6ft) | 0.4m (1.5ft) | 0.5m (1.7ft) | 0.9m (3.1ft) |
| Direction | 309° NW | 311° NW | 311° NW | 311° NW | 312° NW | 312° NW | 312° NW | 311° NW |
| Period | 13.9 sec. | 14.3 sec. | 14.2 sec. | 14.3 sec. | 14.3 sec. | 14.3 sec. | 14.3 sec. | 14.1 sec. |
| Significant height | 0.9m (3ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.8m (2.6ft) | 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 Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 08:56 and will set at 17:13 on the beach(es) of Saint-Briac-sur-Mer. The outside temperature will be a high of 49°F t and a low of 43°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 22.4mph). 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 | 8°C (47°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) | 8°C (46°F) | 9°C (48°F) | 6°C (43°F) | 6°C (42°F) |
| Perceived temperature | 6°C (42°F) | 6°C (43°F) | 6°C (43°F) | 7°C (44°F) | 6°C (43°F) | 7°C (44°F) | 3°C (38°F) | 2°C (36°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 78% | 79% | 81% | 81% | 76% | 69% | 79% | 85% |
| Barometric pressure | 1020 hPa | 1021 hPa | 1022 hPa | 1023 hPa | 1024 hPa | 1022 hPa | 1022 hPa | 1021 hPa |
| Cloud cover | 11% | 8% | 23% | 10% | 10% | 40% | 20% | 30% |
| Heat index | 8°C (47°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) | 8°C (46°F) | 9°C (48°F) | 6°C (43°F) | 6°C (42°F) |
| Dew point | 5°C (41°F) | 5°C (40°F) | 5°C (40°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 3°C (37°F) | 3°C (38°F) |
| Wind | ||||||||
| Speed | 17km/h (10mph) | 12km/h (8mph) | 9km/h (6mph) | 4km/h (2mph) | 9km/h (6mph) | 14km/h (9mph) | 15km/h (9mph) | 18km/h (11mph) |
| Gusts | 29km/h (18mph) | 22km/h (14mph) | 17km/h (10mph) | 7km/h (5mph) | 14km/h (9mph) | 21km/h (13mph) | 31km/h (19mph) | 36km/h (22mph) |
| Direction | 356° N | 346° NNW | 321° NW | 260° W | 214° SSW | 198° SSW | 188° S | 186° S |
| Wind chill | 6°C (42°F) | 6°C (43°F) | 6°C (43°F) | 7°C (44°F) | 6°C (43°F) | 7°C (44°F) | 3°C (38°F) | 2°C (36°F) |
| Waves | ||||||||
| Height | 0.8m (2.6ft) | 0.7m (2.5ft) | 0.6m (2.0ft) | 0.5m (1.7ft) | 0.5m (1.5ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.4m (1.3ft) |
| Direction | 311° NW | 311° NW | 311° NW | 311° NW | 310° NW | 310° NW | 310° NW | 310° NW |
| Period | 14.1 sec. | 14.1 sec. | 13.9 sec. | 13.9 sec. | 13.7 sec. | 13.6 sec. | 13.4 sec. | 13.0 sec. |
| Significant height | 0.9m (3ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.7m (2.3ft) |
| 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 Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 08:56 and will set at 17:14 on the beach(es) of Saint-Briac-sur-Mer. The outside temperature will be a high of 54°F t and a low of 43°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 26.7mph km/h (with gusts up to 30.5mph). Wave height will be up to 3.6ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 6°C (43°F) | 6°C (43°F) | 6°C (43°F) | 7°C (45°F) | 10°C (51°F) | 12°C (54°F) | 11°C (52°F) | 12°C (54°F) |
| Perceived temperature | 2°C (36°F) | 2°C (36°F) | 2°C (36°F) | 3°C (37°F) | 6°C (44°F) | 9°C (48°F) | 7°C (45°F) | 9°C (48°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 89% | 89% | 88% | 93% | 88% | 82% | 86% | 86% |
| Barometric pressure | 1021 hPa | 1019 hPa | 1016 hPa | 1013 hPa | 1010 hPa | 1007 hPa | 1007 hPa | 1007 hPa |
| Cloud cover | 18% | 57% | 66% | 89% | 100% | 100% | 100% | 100% |
| Heat index | 6°C (43°F) | 6°C (43°F) | 6°C (43°F) | 7°C (45°F) | 10°C (51°F) | 12°C (54°F) | 11°C (52°F) | 12°C (54°F) |
| Dew point | 4°C (40°F) | 5°C (40°F) | 4°C (40°F) | 6°C (43°F) | 8°C (47°F) | 9°C (49°F) | 9°C (48°F) | 10°C (50°F) |
| Wind | ||||||||
| Speed | 20km/h (13mph) | 23km/h (14mph) | 27km/h (17mph) | 32km/h (20mph) | 39km/h (24mph) | 43km/h (27mph) | 42km/h (26mph) | 31km/h (19mph) |
| Gusts | 38km/h (23mph) | 40km/h (25mph) | 45km/h (28mph) | 34km/h (21mph) | 45km/h (28mph) | 49km/h (31mph) | 45km/h (28mph) | 38km/h (24mph) |
| Direction | 182° S | 175° S | 169° S | 163° SSE | 173° S | 186° S | 194° SSW | 223° SW |
| Wind chill | 2°C (36°F) | 2°C (36°F) | 2°C (36°F) | 3°C (37°F) | 6°C (44°F) | 9°C (48°F) | 7°C (45°F) | 9°C (48°F) |
| Waves | ||||||||
| Height | 0.4m (1.4ft) | 0.5m (1.7ft) | 0.7m (2.2ft) | 0.8m (2.5ft) | 0.9m (2.9ft) | 1.0m (3.3ft) | 1.1m (3.6ft) | 1.1m (3.6ft) |
| Direction | 310° NW | 310° NW | 310° NW | 313° NW | 313° NW | 313° NW | 312° NW | 312° NW |
| Period | 12.8 sec. | 12.6 sec. | 12.4 sec. | 21.6 sec. | 20.5 sec. | 19.8 sec. | 19.0 sec. | 18.7 sec. |
| Significant height | 0.7m (2.3ft) | 1.0m (3.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.6m (5.2ft) | 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) | 12°C (53°F) | 12°C (53°F) | 12°C (53°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 08:57 and will set at 17:14 on the beach(es) of Saint-Briac-sur-Mer. The outside temperature will be a high of 52°F t and a low of 43°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 16.2mph km/h (with gusts up to 25.5mph). 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 | 11°C (51°F) | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 7°C (45°F) | 6°C (43°F) |
| Perceived temperature | 8°C (46°F) | 6°C (43°F) | 6°C (43°F) | 6°C (43°F) | 6°C (44°F) | 7°C (45°F) | 5°C (40°F) | 3°C (38°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 79% | 79% | 66% | 71% | 71% | 68% | 76% | 82% |
| Barometric pressure | 1009 hPa | 1012 hPa | 1015 hPa | 1018 hPa | 1021 hPa | 1021 hPa | 1022 hPa | 1022 hPa |
| Cloud cover | 100% | 59% | 80% | 84% | 87% | 18% | 17% | 12% |
| Heat index | 11°C (51°F) | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 7°C (45°F) | 6°C (43°F) |
| Dew point | 7°C (45°F) | 6°C (42°F) | 3°C (38°F) | 4°C (39°F) | 4°C (39°F) | 4°C (38°F) | 3°C (38°F) | 4°C (38°F) |
| Wind | ||||||||
| Speed | 26km/h (16mph) | 22km/h (14mph) | 24km/h (15mph) | 15km/h (9mph) | 16km/h (10mph) | 13km/h (8mph) | 13km/h (8mph) | 14km/h (9mph) |
| Gusts | 41km/h (26mph) | 35km/h (22mph) | 37km/h (23mph) | 26km/h (16mph) | 24km/h (15mph) | 21km/h (13mph) | 25km/h (16mph) | 27km/h (17mph) |
| Direction | 237° WSW | 238° WSW | 322° NW | 282° WNW | 264° W | 252° WSW | 236° SW | 221° SW |
| Wind chill | 8°C (46°F) | 6°C (43°F) | 6°C (43°F) | 6°C (43°F) | 6°C (44°F) | 7°C (45°F) | 5°C (40°F) | 3°C (38°F) |
| Waves | ||||||||
| Height | 0.8m (2.7ft) | 0.9m (2.8ft) | 1.0m (3.1ft) | 0.9m (3.1ft) | 0.9m (2.9ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.7m (2.3ft) |
| Direction | 312° NW | 312° NW | 311° NW | 312° NW | 312° NW | 311° NW | 311° NW | 311° NW |
| Period | 17.9 sec. | 17.9 sec. | 17.9 sec. | 17.6 sec. | 16.9 sec. | 16.2 sec. | 15.6 sec. | 15.1 sec. |
| Significant height | 1.0m (3.3ft) | 1.3m (4.3ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 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 Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 08:57 and will set at 17:14 on the beach(es) of Saint-Briac-sur-Mer. The outside temperature will be a high of 47°F t and a low of 41°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 18mph km/h (with gusts up to 25.5mph). 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 | 6°C (43°F) | 5°C (42°F) | 5°C (41°F) | 5°C (42°F) | 7°C (44°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) |
| Perceived temperature | 3°C (37°F) | 2°C (35°F) | 1°C (34°F) | 1°C (35°F) | 3°C (37°F) | 3°C (38°F) | 3°C (38°F) | 3°C (37°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 85% | 87% | 89% | 89% | 84% | 82% | 83% | 84% |
| Barometric pressure | 1022 hPa | 1021 hPa | 1019 hPa | 1017 hPa | 1015 hPa | 1013 hPa | 1010 hPa | 1009 hPa |
| Cloud cover | 8% | 6% | 8% | 27% | 21% | 20% | 58% | 92% |
| Heat index | 6°C (43°F) | 5°C (42°F) | 5°C (41°F) | 5°C (42°F) | 7°C (44°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) |
| Dew point | 4°C (38°F) | 3°C (38°F) | 3°C (38°F) | 4°C (39°F) | 4°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) |
| Wind | ||||||||
| Speed | 15km/h (9mph) | 17km/h (11mph) | 19km/h (12mph) | 21km/h (13mph) | 26km/h (16mph) | 29km/h (18mph) | 29km/h (18mph) | 28km/h (18mph) |
| Gusts | 29km/h (18mph) | 32km/h (20mph) | 36km/h (22mph) | 37km/h (23mph) | 41km/h (25mph) | 37km/h (23mph) | 33km/h (21mph) | 40km/h (25mph) |
| Direction | 205° SSW | 194° SSW | 186° S | 177° S | 170° S | 169° S | 167° SSE | 162° SSE |
| Wind chill | 3°C (37°F) | 2°C (35°F) | 1°C (34°F) | 1°C (35°F) | 3°C (37°F) | 3°C (38°F) | 3°C (38°F) | 3°C (37°F) |
| Waves | ||||||||
| Height | 0.6m (2.0ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.6m (2.0ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.4m (1.3ft) |
| Direction | 311° NW | 311° NW | 312° NW | 312° NW | 312° NW | 311° NW | 312° NW | 311° NW |
| Period | 14.8 sec. | 14.5 sec. | 14.4 sec. | 14.1 sec. | 13.8 sec. | 13.6 sec. | 13.4 sec. | 13.0 sec. |
| Significant height | 1.0m (3.3ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.7m (2.3ft) |
| 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 Sunday 21 December 2025
On Sunday 21 December 2025, the sun will rise at 08:58 and will set at 17:15 on the beach(es) of Saint-Briac-sur-Mer. The outside temperature will be a high of 49°F t and a low of 43°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 26.1mph). 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 | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 8°C (47°F) | 7°C (44°F) | 6°C (42°F) |
| Perceived temperature | 3°C (38°F) | 3°C (38°F) | 4°C (38°F) | 4°C (40°F) | 6°C (42°F) | 6°C (42°F) | 4°C (38°F) | 2°C (36°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 86% | 88% | 89% | 85% | 78% | 70% | 80% | 89% |
| Barometric pressure | 1008 hPa | 1006 hPa | 1006 hPa | 1007 hPa | 1007 hPa | 1006 hPa | 1007 hPa | 1007 hPa |
| Cloud cover | 80% | 90% | 100% | 89% | 71% | 26% | 22% | 36% |
| Heat index | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 8°C (47°F) | 7°C (44°F) | 6°C (42°F) |
| Dew point | 5°C (41°F) | 5°C (42°F) | 6°C (42°F) | 5°C (41°F) | 4°C (40°F) | 3°C (38°F) | 3°C (38°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 28km/h (17mph) | 26km/h (16mph) | 24km/h (15mph) | 17km/h (11mph) | 14km/h (9mph) | 14km/h (9mph) | 16km/h (10mph) | 17km/h (10mph) |
| Gusts | 42km/h (26mph) | 37km/h (23mph) | 34km/h (21mph) | 25km/h (16mph) | 20km/h (12mph) | 24km/h (15mph) | 31km/h (19mph) | 31km/h (19mph) |
| Direction | 161° SSE | 164° SSE | 259° WSW | 278° W | 240° WSW | 223° SW | 193° SSW | 193° SSW |
| Wind chill | 3°C (38°F) | 3°C (38°F) | 4°C (38°F) | 4°C (40°F) | 6°C (42°F) | 6°C (42°F) | 4°C (38°F) | 2°C (36°F) |
| Waves | ||||||||
| Height | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.6m (2.0ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.7m (2.3ft) |
| Direction | 310° NW | 311° NW | 311° NW | 311° NW | 311° NW | 313° NW | 314° NW | 313° NW |
| Period | 12.8 sec. | 12.6 sec. | 12.5 sec. | 12.4 sec. | 12.7 sec. | 13.9 sec. | 15.6 sec. | 15.9 sec. |
| Significant height | 0.8m (2.6ft) | 1.0m (3.3ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 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) |