Sea weather in Viana do Castelo in Portugal All the beach weather in Viana do Castelo
All the essential weather information for enjoying the beach in Viana do Castelo in Portugal, 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 Viana do Castelo over the next 7 days?
Discover the best moment to go to the beach in Viana do Castelo in Portugal this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Viana do Castelo. 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 | 58°F to 61°F | 22.4mph | discouraged | all the sea weather |
| Saturday 6 December 2025 | 61°F to 61°F | 21.8mph | discouraged | all the sea weather |
| Sunday 7 December 2025 | 59°F to 61°F | 26.1mph | not recommended | all the sea weather |
| Monday 8 December 2025 | 59°F to 61°F | 33.6mph | not recommended | all the sea weather |
| Tuesday 9 December 2025 | 59°F to 63°F | 41.6mph | not recommended | all the sea weather |
| Wednesday 10 December 2025 | 50°F to 58°F | 6.2mph | discouraged | all the sea weather |
| Thursday 11 December 2025 | 56°F to 59°F | 22.4mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Viana do Castelo
Sea weather on Friday 5 December 2025
On Friday 5 December 2025, the sun will rise at 07:47 and will set at 17:05 on the beach(es) of Viana do Castelo. The outside temperature will be a high of 61°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. The sea will be generally calm, with a wind speed of up to 22.4mph km/h (with gusts up to 28mph). 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 | 14°C (58°F) | 15°C (58°F) | 14°C (58°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) |
| Perceived temperature | 13°C (55°F) | 13°C (56°F) | 12°C (54°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0.1in | 0.1in |
| Humidity | 72% | 74% | 88% | 93% | 93% | 91% | 92% | 94% |
| Barometric pressure | 1018 hPa | 1018 hPa | 1017 hPa | 1017 hPa | 1018 hPa | 1017 hPa | 1017 hPa | 1018 hPa |
| Cloud cover | 100% | 91% | 100% | 100% | 62% | 96% | 100% | 100% |
| Heat index | 14°C (58°F) | 15°C (58°F) | 14°C (58°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) |
| Dew point | 9°C (49°F) | 10°C (50°F) | 12°C (54°F) | 14°C (58°F) | 15°C (58°F) | 14°C (58°F) | 14°C (58°F) | 15°C (58°F) |
| Wind | ||||||||
| Speed | 23km/h (15mph) | 20km/h (12mph) | 29km/h (18mph) | 21km/h (13mph) | 28km/h (17mph) | 32km/h (20mph) | 31km/h (19mph) | 36km/h (22mph) |
| Gusts | 32km/h (20mph) | 28km/h (17mph) | 39km/h (24mph) | 32km/h (20mph) | 45km/h (28mph) | 32km/h (20mph) | 35km/h (22mph) | 43km/h (27mph) |
| Direction | 243° WSW | 203° SSW | 187° S | 216° SW | 228° SW | 234° SW | 227° SW | 231° SW |
| Wind chill | 13°C (55°F) | 13°C (56°F) | 12°C (54°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) |
| Waves | ||||||||
| Height | 4.2m (13.7ft) | 4.3m (14.2ft) | 4.4m (14.5ft) | 4.3m (14.2ft) | 4.1m (13.6ft) | 4.0m (13.0ft) | 3.8m (12.4ft) | 3.8m (12.4ft) |
| Direction | 307° NW | 306° NW | 305° NW | 303° WNW | 303° WNW | 303° WNW | 303° WNW | 304° WNW |
| Period | 13.3 sec. | 13.6 sec. | 14.4 sec. | 14.8 sec. | 17.1 sec. | 16.7 sec. | 16.1 sec. | 15.9 sec. |
| Significant height | 0.8m (2.6ft) | 0.5m (1.6ft) | 0.6m (2ft) | 1.0m (3.3ft) | 0.6m (2ft) | 0.9m (3ft) | 0.8m (2.6ft) | 1.0m (3.3ft) |
| 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 6 December 2025
On Saturday 6 December 2025, the sun will rise at 07:48 and will set at 17:05 on the beach(es) of Viana do Castelo. The outside temperature will be a high of 61°F t and a low of 61°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 22.4mph km/h (with gusts up to 31.1mph). 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 | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Perceived temperature | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Precipitation | 0.1in | 0.1in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 93% | 95% | 97% | 94% | 94% | 92% | 87% | 82% |
| Barometric pressure | 1019 hPa | 1019 hPa | 1019 hPa | 1020 hPa | 1020 hPa | 1019 hPa | 1020 hPa | 1021 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 51% | 77% |
| Heat index | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Dew point | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (58°F) | 14°C (58°F) | 13°C (56°F) | 13°C (56°F) |
| Wind | ||||||||
| Speed | 36km/h (22mph) | 33km/h (21mph) | 29km/h (18mph) | 33km/h (20mph) | 36km/h (22mph) | 32km/h (20mph) | 32km/h (20mph) | 35km/h (21mph) |
| Gusts | 36km/h (23mph) | 50km/h (31mph) | 44km/h (27mph) | 50km/h (31mph) | 38km/h (24mph) | 39km/h (24mph) | 40km/h (25mph) | 41km/h (25mph) |
| Direction | 232° SW | 233° SW | 224° SW | 220° SW | 209° SSW | 210° SSW | 205° SSW | 183° S |
| Wind chill | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Waves | ||||||||
| Height | 4.0m (13.2ft) | 4.3m (14.0ft) | 4.6m (15.2ft) | 5.1m (16.9ft) | 5.4m (17.6ft) | 5.2m (17.0ft) | 4.9m (16.0ft) | 4.5m (14.9ft) |
| Direction | 305° NW | 303° WNW | 301° WNW | 299° WNW | 297° WNW | 295° WNW | 293° WNW | 292° WNW |
| Period | 15.5 sec. | 13.6 sec. | 14.6 sec. | 15.5 sec. | 16.2 sec. | 16.1 sec. | 15.9 sec. | 15.7 sec. |
| Significant height | 1.0m (3.3ft) | 0.9m (3ft) | 0.8m (2.6ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 0.9m (3ft) | 0.9m (3ft) | 0.9m (3ft) |
| 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 Sunday 7 December 2025
On Sunday 7 December 2025, the sun will rise at 07:49 and will set at 17:05 on the beach(es) of Viana do Castelo. The outside temperature will be a high of 61°F t and a low of 59°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 26.1mph km/h (with gusts up to 26.7mph). Wave height will be up to 13.8ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 16°C (62°F) | 16°C (61°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 15°C (59°F) | 15°C (60°F) |
| Perceived temperature | 16°C (62°F) | 16°C (61°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 13°C (55°F) | 15°C (60°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 78% | 78% | 83% | 79% | 81% | 80% | 87% | 88% |
| Barometric pressure | 1021 hPa | 1021 hPa | 1020 hPa | 1021 hPa | 1021 hPa | 1020 hPa | 1020 hPa | 1020 hPa |
| Cloud cover | 58% | 66% | 59% | 52% | 91% | 100% | 84% | 74% |
| Heat index | 16°C (62°F) | 16°C (61°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 15°C (59°F) | 15°C (60°F) |
| Dew point | 13°C (55°F) | 12°C (54°F) | 13°C (55°F) | 13°C (55°F) | 12°C (54°F) | 12°C (54°F) | 13°C (55°F) | 13°C (56°F) |
| Wind | ||||||||
| Speed | 32km/h (20mph) | 36km/h (22mph) | 39km/h (24mph) | 37km/h (23mph) | 41km/h (25mph) | 41km/h (26mph) | 37km/h (23mph) | 42km/h (26mph) |
| Gusts | 33km/h (21mph) | 43km/h (27mph) | 43km/h (27mph) | 43km/h (27mph) | 42km/h (26mph) | 42km/h (26mph) | 41km/h (26mph) | 43km/h (27mph) |
| Direction | 195° SSW | 196° SSW | 177° S | 183° S | 175° S | 173° S | 189° S | 176° S |
| Wind chill | 16°C (62°F) | 16°C (61°F) | 16°C (60°F) | 16°C (61°F) | 16°C (60°F) | 16°C (60°F) | 13°C (55°F) | 15°C (60°F) |
| Waves | ||||||||
| Height | 4.2m (13.9ft) | 3.9m (12.9ft) | 3.7m (12.3ft) | 3.5m (11.6ft) | 3.5m (11.4ft) | 3.7m (12.0ft) | 3.8m (12.5ft) | 3.8m (12.5ft) |
| Direction | 293° WNW | 293° WNW | 292° WNW | 291° WNW | 294° WNW | 292° WNW | 288° WNW | 284° WNW |
| Period | 15.4 sec. | 14.6 sec. | 14.5 sec. | 14.0 sec. | 13.3 sec. | 13.1 sec. | 12.8 sec. | 12.6 sec. |
| Significant height | 0.9m (3ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.2m (3.9ft) |
| 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 Monday 8 December 2025
On Monday 8 December 2025, the sun will rise at 07:50 and will set at 17:05 on the beach(es) of Viana do Castelo. The outside temperature will be a high of 61°F t and a low of 59°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 33.6mph km/h (with gusts up to 34.8mph). 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 | 16°C (60°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Perceived temperature | 16°C (60°F) | 15°C (59°F) | 12°C (54°F) | 15°C (59°F) | 15°C (59°F) | 15°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 84% | 85% | 85% | 84% | 82% | 81% | 80% | 79% |
| Barometric pressure | 1019 hPa | 1019 hPa | 1018 hPa | 1019 hPa | 1018 hPa | 1017 hPa | 1017 hPa | 1018 hPa |
| Cloud cover | 66% | 86% | 57% | 45% | 83% | 100% | 100% | 78% |
| Heat index | 16°C (60°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Dew point | 13°C (55°F) | 13°C (55°F) | 12°C (54°F) | 13°C (55°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) |
| Wind | ||||||||
| Speed | 44km/h (27mph) | 47km/h (29mph) | 46km/h (28mph) | 48km/h (30mph) | 50km/h (31mph) | 49km/h (30mph) | 50km/h (31mph) | 54km/h (33mph) |
| Gusts | 48km/h (30mph) | 54km/h (33mph) | 46km/h (29mph) | 53km/h (33mph) | 53km/h (33mph) | 56km/h (35mph) | 53km/h (33mph) | 54km/h (34mph) |
| Direction | 167° SSE | 167° SSE | 170° S | 168° SSE | 168° SSE | 174° S | 165° SSE | 167° SSE |
| Wind chill | 16°C (60°F) | 15°C (59°F) | 12°C (54°F) | 15°C (59°F) | 15°C (59°F) | 15°C (60°F) | 16°C (60°F) | 16°C (61°F) |
| Waves | ||||||||
| Height | 3.6m (11.9ft) | 3.5m (11.5ft) | 3.4m (11.1ft) | 3.4m (11.1ft) | 3.8m (12.5ft) | 4.2m (13.7ft) | 4.5m (14.8ft) | 4.7m (15.5ft) |
| Direction | 282° WNW | 280° W | 278° W | 276° W | 284° WNW | 285° WNW | 285° WNW | 285° WNW |
| Period | 12.2 sec. | 12.0 sec. | 11.8 sec. | 11.5 sec. | 11.6 sec. | 19.2 sec. | 18.3 sec. | 17.7 sec. |
| Significant height | 1.1m (3.6ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) |
| 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 Tuesday 9 December 2025
On Tuesday 9 December 2025, the sun will rise at 07:51 and will set at 17:05 on the beach(es) of Viana do Castelo. The outside temperature will be a high of 63°F t and a low of 59°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 41.6mph km/h (with gusts up to 44.7mph). Wave height will be up to 15.7ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | |  |
| Outside temperature | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 15°C (60°F) | 16°C (61°F) | 17°C (62°F) | 15°C (59°F) |
| Perceived temperature | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 15°C (60°F) | 16°C (61°F) | 17°C (62°F) | 12°C (53°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0.2in |
| Humidity | 81% | 80% | 75% | 72% | 70% | 68% | 70% | 83% |
| Barometric pressure | 1017 hPa | 1016 hPa | 1014 hPa | 1014 hPa | 1013 hPa | 1010 hPa | 1010 hPa | 1008 hPa |
| Cloud cover | 83% | 96% | 5% | 5% | 10% | 23% | 75% | 100% |
| Heat index | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 15°C (60°F) | 16°C (61°F) | 17°C (62°F) | 15°C (59°F) |
| Dew point | 12°C (54°F) | 12°C (54°F) | 11°C (53°F) | 11°C (51°F) | 10°C (50°F) | 10°C (50°F) | 11°C (52°F) | 12°C (54°F) |
| Wind | ||||||||
| Speed | 54km/h (34mph) | 55km/h (34mph) | 58km/h (36mph) | 62km/h (38mph) | 63km/h (39mph) | 67km/h (41mph) | 64km/h (40mph) | 67km/h (42mph) |
| Gusts | 56km/h (35mph) | 56km/h (35mph) | 64km/h (40mph) | 63km/h (39mph) | 66km/h (41mph) | 69km/h (43mph) | 66km/h (41mph) | 72km/h (45mph) |
| Direction | 168° SSE | 169° SSE | 168° SSE | 168° SSE | 168° SSE | 172° S | 173° S | 163° SSE |
| Wind chill | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (61°F) | 15°C (60°F) | 16°C (61°F) | 17°C (62°F) | 12°C (53°F) |
| Waves | ||||||||
| Height | 4.8m (15.7ft) | 4.8m (15.6ft) | 4.7m (15.3ft) | 4.6m (15.1ft) | 4.6m (15.0ft) | 4.6m (15.2ft) | 4.8m (15.9ft) | 4.7m (15.5ft) |
| Direction | 284° WNW | 285° WNW | 285° WNW | 285° WNW | 286° WNW | 285° WNW | 285° WNW | 284° WNW |
| Period | 17.6 sec. | 17.5 sec. | 17.3 sec. | 17.0 sec. | 16.2 sec. | 15.8 sec. | 15.5 sec. | 15.5 sec. |
| Significant height | 1.3m (4.3ft) | 1.4m (4.6ft) | 1.4m (4.6ft) | 1.6m (5.2ft) | 1.6m (5.2ft) | 1.7m (5.6ft) | 1.8m (5.9ft) | 1.3m (4.3ft) |
| 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 Wednesday 10 December 2025
On Wednesday 10 December 2025, the sun will rise at 07:52 and will set at 17:05 on the beach(es) of Viana do Castelo. The outside temperature will be a high of 58°F t and a low of 50°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 18mph km/h (with gusts up to 24.9mph). Wave height will be up to 16.7ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | |  | |  | |
| Outside temperature | 14°C (56°F) | 14°C (57°F) | 14°C (58°F) | 14°C (58°F) | 12°C (54°F) | 11°C (52°F) | 10°C (51°F) | 13°C (56°F) |
| Perceived temperature | 11°C (52°F) | 12°C (54°F) | 12°C (54°F) | 13°C (56°F) | 10°C (51°F) | 9°C (49°F) | 9°C (47°F) | 13°C (55°F) |
| Precipitation | 0.1in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 89% | 82% | 73% | 66% | 62% | 62% | 63% | 69% |
| Barometric pressure | 1013 hPa | 1015 hPa | 1017 hPa | 1019 hPa | 1020 hPa | 1020 hPa | 1021 hPa | 1021 hPa |
| Cloud cover | 100% | 100% | 76% | 63% | 0% | 0% | 0% | 0% |
| Heat index | 14°C (56°F) | 14°C (57°F) | 14°C (58°F) | 14°C (58°F) | 12°C (54°F) | 11°C (52°F) | 10°C (51°F) | 13°C (56°F) |
| Dew point | 12°C (53°F) | 11°C (51°F) | 10°C (49°F) | 8°C (47°F) | 5°C (41°F) | 4°C (39°F) | 4°C (39°F) | 8°C (46°F) |
| Wind | ||||||||
| Speed | 27km/h (17mph) | 18km/h (11mph) | 29km/h (18mph) | 17km/h (11mph) | 16km/h (10mph) | 13km/h (8mph) | 13km/h (8mph) | 10km/h (6mph) |
| Gusts | 37km/h (23mph) | 25km/h (15mph) | 40km/h (25mph) | 24km/h (15mph) | 32km/h (20mph) | 28km/h (17mph) | 27km/h (17mph) | 15km/h (9mph) |
| Direction | 307° NW | 336° NNW | 338° NNW | 353° N | 354° N | 352° N | 10° N | 114° ESE |
| Wind chill | 11°C (52°F) | 12°C (54°F) | 12°C (54°F) | 13°C (56°F) | 10°C (51°F) | 9°C (49°F) | 9°C (47°F) | 13°C (55°F) |
| Waves | ||||||||
| Height | 5.1m (16.8ft) | 5.0m (16.5ft) | 4.8m (15.8ft) | 4.5m (14.9ft) | 4.1m (13.6ft) | 3.9m (12.8ft) | 3.6m (11.9ft) | 3.4m (11.0ft) |
| Direction | 279° W | 278° W | 280° W | 283° WNW | 283° WNW | 287° WNW | 285° WNW | 286° WNW |
| Period | 15.1 sec. | 15.1 sec. | 14.6 sec. | 14.3 sec. | 13.3 sec. | 13.0 sec. | 12.4 sec. | 12.1 sec. |
| Significant height | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.3m (1ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) |
Sea weather on Thursday 11 December 2025
On Thursday 11 December 2025, the sun will rise at 07:53 and will set at 17:05 on the beach(es) of Viana do Castelo. The outside temperature will be a high of 59°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! 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 12.8ft 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) | 14°C (56°F) | 14°C (57°F) | 14°C (58°F) | 15°C (58°F) |
| Perceived temperature | 12°C (53°F) | 11°C (52°F) | 11°C (51°F) | 10°C (51°F) | 11°C (52°F) | 12°C (53°F) | 12°C (53°F) | 12°C (54°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 78% | 80% | 81% | 85% | 82% | 84% | 87% | 86% |
| Barometric pressure | 1020 hPa | 1020 hPa | 1018 hPa | 1018 hPa | 1018 hPa | 1016 hPa | 1016 hPa | 1016 hPa |
| Cloud cover | 9% | 5% | 58% | 100% | 100% | 100% | 100% | 82% |
| Heat index | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 14°C (56°F) | 14°C (57°F) | 14°C (58°F) | 15°C (58°F) |
| Dew point | 9°C (49°F) | 10°C (49°F) | 10°C (49°F) | 11°C (51°F) | 10°C (51°F) | 12°C (53°F) | 12°C (54°F) | 12°C (54°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 17km/h (11mph) | 24km/h (15mph) | 30km/h (19mph) | 34km/h (21mph) | 36km/h (22mph) | 37km/h (23mph) | 36km/h (22mph) |
| Gusts | 19km/h (12mph) | 24km/h (15mph) | 33km/h (20mph) | 41km/h (25mph) | 48km/h (30mph) | 52km/h (32mph) | 54km/h (34mph) | 51km/h (32mph) |
| Direction | 143° SE | 149° SSE | 151° SSE | 155° SSE | 159° SSE | 175° S | 175° S | 172° S |
| Wind chill | 12°C (53°F) | 11°C (52°F) | 11°C (51°F) | 10°C (51°F) | 11°C (52°F) | 12°C (53°F) | 12°C (53°F) | 12°C (54°F) |
| Waves | ||||||||
| Height | 3.1m (10.3ft) | 3.0m (9.8ft) | 2.9m (9.5ft) | 2.9m (9.7ft) | 3.2m (10.6ft) | 3.6m (11.7ft) | 3.8m (12.6ft) | 3.9m (12.7ft) |
| Direction | 286° WNW | 286° WNW | 287° WNW | 288° WNW | 287° WNW | 285° WNW | 280° W | 279° W |
| Period | 11.9 sec. | 11.8 sec. | 11.9 sec. | 11.9 sec. | 11.9 sec. | 11.6 sec. | 11.3 sec. | 11.4 sec. |
| Significant height | 0.6m (2ft) | 1.0m (3.3ft) | 1.2m (3.9ft) | 1.6m (5.2ft) | 1.7m (5.6ft) | 1.8m (5.9ft) | 2.0m (6.6ft) | 1.6m (5.2ft) |
| 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) |