Sea weather in Cornwall in England All the beach weather in Cornwall
All the essential weather information for enjoying the beach in Cornwall in England, 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 Cornwall over the next 7 days?
Discover the best moment to go to the beach in Cornwall in England this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Cornwall. 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 54°F | 18.6mph | not recommended | all the sea weather |
| Tuesday 16 December 2025 | 40°F to 50°F | 5mph | discouraged | all the sea weather |
| Wednesday 17 December 2025 | 49°F to 54°F | 29.2mph | not recommended | all the sea weather |
| Thursday 18 December 2025 | 49°F to 54°F | 31.7mph | not recommended | all the sea weather |
| Friday 19 December 2025 | 49°F to 50°F | 19.3mph | not recommended | all the sea weather |
| Saturday 20 December 2025 | 45°F to 52°F | 11.8mph | not recommended | all the sea weather |
| Sunday 21 December 2025 | 49°F to 49°F | 9.3mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Cornwall
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 08:13 and will set at 16:18 on the beach(es) of Cornwall. The outside temperature will be a high of 54°F t and a low of 49°F. Precipitation is in the forecast (0.8in 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 32.3mph km/h (with gusts up to 39.2mph). 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 | 12°C (54°F) | 11°C (52°F) | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 10°C (51°F) | 10°C (49°F) |
| Perceived temperature | 9°C (48°F) | 7°C (45°F) | 7°C (44°F) | 7°C (44°F) | 8°C (46°F) | 7°C (45°F) | 9°C (47°F) | 6°C (43°F) |
| Precipitation | 0in | 0.1in | 0.1in | 0.1in | 0in | 0.1in | 0in | 0.2in |
| Humidity | 90% | 92% | 94% | 93% | 93% | 94% | 91% | 91% |
| Barometric pressure | 1007 hPa | 1005 hPa | 1003 hPa | 1003 hPa | 1002 hPa | 1000 hPa | 1001 hPa | 1001 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Heat index | 12°C (54°F) | 11°C (52°F) | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 10°C (51°F) | 10°C (49°F) |
| Dew point | 11°C (51°F) | 10°C (50°F) | 10°C (50°F) | 10°C (49°F) | 10°C (50°F) | 10°C (50°F) | 9°C (48°F) | 8°C (47°F) |
| Wind | ||||||||
| Speed | 46km/h (29mph) | 49km/h (31mph) | 52km/h (32mph) | 46km/h (29mph) | 38km/h (23mph) | 45km/h (28mph) | 14km/h (9mph) | 30km/h (19mph) |
| Gusts | 50km/h (31mph) | 51km/h (32mph) | 57km/h (36mph) | 63km/h (39mph) | 56km/h (35mph) | 46km/h (29mph) | 21km/h (13mph) | 42km/h (26mph) |
| Direction | 201° SSW | 194° SSW | 197° SSW | 204° SSW | 197° SSW | 183° S | 294° WNW | 360° N |
| Wind chill | 9°C (48°F) | 7°C (45°F) | 7°C (44°F) | 7°C (44°F) | 8°C (46°F) | 7°C (45°F) | 9°C (47°F) | 6°C (43°F) |
| Waves | ||||||||
| Height | 4.0m (13.3ft) | 4.1m (13.5ft) | 4.2m (13.7ft) | 4.0m (13.2ft) | 3.7m (12.2ft) | 3.7m (12.2ft) | 3.8m (12.6ft) | 3.5m (11.6ft) |
| Direction | 256° WSW | 255° WSW | 254° WSW | 253° WSW | 253° WSW | 254° WSW | 257° WSW | 258° WSW |
| Period | 13.0 sec. | 12.6 sec. | 12.6 sec. | 12.6 sec. | 13.2 sec. | 13.9 sec. | 14.5 sec. | 14.5 sec. |
| Significant height | 1.7m (5.6ft) | 1.8m (5.9ft) | 1.9m (6.2ft) | 1.6m (5.2ft) | 0.8m (2.6ft) | 1.4m (4.6ft) | 0.5m (1.6ft) | 1.0m (3.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 08:14 and will set at 16:18 on the beach(es) of Cornwall. The outside temperature will be a high of 50°F t and a low of 40°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 23.6mph km/h (with gusts up to 31.7mph). Wave height will be up to 10.8ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | | |  |  |  | |
| Outside temperature | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 10°C (49°F) | 9°C (49°F) | 5°C (41°F) | 8°C (47°F) |
| Perceived temperature | 5°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 7°C (44°F) | 7°C (44°F) | 2°C (36°F) | 7°C (44°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 77% | 79% | 76% | 78% | 72% | 69% | 72% | 73% |
| Barometric pressure | 1003 hPa | 1006 hPa | 1009 hPa | 1012 hPa | 1014 hPa | 1016 hPa | 1018 hPa | 1020 hPa |
| Cloud cover | 75% | 71% | 100% | 94% | 67% | 36% | 0% | 16% |
| Heat index | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 10°C (49°F) | 9°C (49°F) | 5°C (41°F) | 8°C (47°F) |
| Dew point | 6°C (42°F) | 6°C (42°F) | 5°C (41°F) | 6°C (42°F) | 5°C (41°F) | 4°C (39°F) | 0°C (33°F) | 4°C (38°F) |
| Wind | ||||||||
| Speed | 38km/h (23mph) | 29km/h (18mph) | 27km/h (17mph) | 25km/h (15mph) | 21km/h (13mph) | 19km/h (12mph) | 13km/h (8mph) | 8km/h (5mph) |
| Gusts | 51km/h (31mph) | 41km/h (25mph) | 38km/h (24mph) | 37km/h (23mph) | 30km/h (18mph) | 29km/h (18mph) | 27km/h (17mph) | 13km/h (8mph) |
| Direction | 1° N | 334° NNW | 334° NNW | 329° NNW | 344° NNW | 348° NNW | 332° NNW | 316° NW |
| Wind chill | 5°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 7°C (44°F) | 7°C (44°F) | 2°C (36°F) | 7°C (44°F) |
| Waves | ||||||||
| Height | 3.3m (10.9ft) | 3.2m (10.5ft) | 3.1m (10.3ft) | 3.1m (10.3ft) | 3.0m (10.0ft) | 2.9m (9.6ft) | 2.8m (9.2ft) | 2.7m (8.8ft) |
| Direction | 259° WSW | 259° W | 260° W | 260° W | 259° W | 259° WSW | 259° WSW | 258° WSW |
| Period | 14.6 sec. | 14.7 sec. | 14.7 sec. | 14.8 sec. | 14.7 sec. | 14.5 sec. | 14.4 sec. | 14.3 sec. |
| Significant height | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.3m (1ft) | 0.1m (0.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) |
Sea weather on Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 08:14 and will set at 16:18 on the beach(es) of Cornwall. The outside temperature will be a high of 54°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! Be careful, the sea will be generally rough with a wind speed of up to 29.2mph km/h (with gusts up to 34.2mph). 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 | 9°C (47°F) | 10°C (49°F) | 10°C (50°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) |
| Perceived temperature | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 7°C (45°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 71% | 67% | 68% | 71% | 77% | 79% | 81% | 86% |
| Barometric pressure | 1020 hPa | 1021 hPa | 1020 hPa | 1021 hPa | 1020 hPa | 1017 hPa | 1016 hPa | 1015 hPa |
| Cloud cover | 5% | 16% | 78% | 74% | 89% | 44% | 100% | 100% |
| Heat index | 9°C (47°F) | 10°C (49°F) | 10°C (50°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) |
| Dew point | 4°C (39°F) | 4°C (39°F) | 4°C (40°F) | 6°C (42°F) | 7°C (45°F) | 7°C (45°F) | 8°C (47°F) | 9°C (48°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 18km/h (11mph) | 24km/h (15mph) | 33km/h (20mph) | 38km/h (24mph) | 43km/h (27mph) | 44km/h (28mph) | 47km/h (29mph) |
| Gusts | 12km/h (7mph) | 26km/h (16mph) | 36km/h (22mph) | 47km/h (29mph) | 55km/h (34mph) | 44km/h (28mph) | 51km/h (32mph) | 50km/h (31mph) |
| Direction | 244° WSW | 228° SW | 219° SW | 207° SSW | 203° SSW | 198° SSW | 201° SSW | 200° SSW |
| Wind chill | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 7°C (45°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) |
| Waves | ||||||||
| Height | 2.6m (8.6ft) | 2.6m (8.6ft) | 2.5m (8.4ft) | 2.5m (8.1ft) | 2.5m (8.3ft) | 2.8m (9.3ft) | 3.5m (11.4ft) | 3.9m (12.9ft) |
| Direction | 257° WSW | 256° WSW | 259° WSW | 259° WSW | 258° WSW | 259° W | 261° W | 262° W |
| Period | 14.3 sec. | 14.2 sec. | 13.8 sec. | 13.4 sec. | 13.2 sec. | 13.1 sec. | 12.4 sec. | 11.7 sec. |
| Significant height | 0.2m (0.7ft) | 0.5m (1.6ft) | 0.8m (2.6ft) | 1.1m (3.6ft) | 1.4m (4.6ft) | 1.6m (5.2ft) | 1.9m (6.2ft) | 1.8m (5.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 08:15 and will set at 16:18 on the beach(es) of Cornwall. The outside temperature will be a high of 54°F t and a low of 49°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 45.4mph km/h (with gusts up to 48.5mph). Wave height will be up to 23.6ft 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) | 12°C (54°F) | 11°C (53°F) | 11°C (51°F) | 11°C (52°F) | 11°C (51°F) |
| Perceived temperature | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 7°C (44°F) | 7°C (45°F) | 7°C (45°F) | 6°C (43°F) |
| Precipitation | 0in | 0.1in | 0in | 0in | 0.1in | 0in | 0in | 0in |
| Humidity | 92% | 92% | 91% | 85% | 92% | 87% | 89% | 79% |
| Barometric pressure | 1013 hPa | 1011 hPa | 1007 hPa | 1002 hPa | 998 hPa | 999 hPa | 1001 hPa | 1003 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 29% |
| Heat index | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 12°C (54°F) | 11°C (53°F) | 11°C (51°F) | 11°C (52°F) | 11°C (51°F) |
| Dew point | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (49°F) | 10°C (50°F) | 9°C (47°F) | 9°C (48°F) | 7°C (45°F) |
| Wind | ||||||||
| Speed | 44km/h (27mph) | 45km/h (28mph) | 55km/h (34mph) | 65km/h (40mph) | 73km/h (45mph) | 36km/h (22mph) | 40km/h (25mph) | 51km/h (32mph) |
| Gusts | 60km/h (37mph) | 62km/h (39mph) | 61km/h (38mph) | 69km/h (43mph) | 78km/h (48mph) | 52km/h (33mph) | 43km/h (26mph) | 56km/h (35mph) |
| Direction | 203° SSW | 194° SSW | 185° S | 176° S | 185° S | 235° SW | 218° SW | 236° SW |
| Wind chill | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 7°C (44°F) | 7°C (45°F) | 7°C (45°F) | 6°C (43°F) |
| Waves | ||||||||
| Height | 4.1m (13.5ft) | 4.9m (16.1ft) | 6.3m (20.8ft) | 7.1m (23.4ft) | 7.2m (23.5ft) | 6.8m (22.2ft) | 6.7m (22.1ft) | 6.6m (21.8ft) |
| Direction | 261° W | 252° WSW | 251° WSW | 250° WSW | 248° WSW | 252° WSW | 251° WSW | 254° WSW |
| Period | 25.5 sec. | 22.9 sec. | 21.6 sec. | 21.0 sec. | 20.7 sec. | 19.4 sec. | 19.2 sec. | 17.8 sec. |
| Significant height | 2.1m (6.9ft) | 1.8m (5.9ft) | 1.9m (6.2ft) | 2.3m (7.5ft) | 2.4m (7.9ft) | 2.3m (7.5ft) | 2.7m (8.9ft) | 2.3m (7.5ft) |
| Sea water temperature | ||||||||
| Water temperature | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) | 10°C (50°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 08:16 and will set at 16:19 on the beach(es) of Cornwall. The outside temperature will be a high of 50°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! Be careful, the sea will be generally rough with a wind speed of up to 26.7mph km/h (with gusts up to 36.7mph). Wave height will be up to 23.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 10°C (50°F) |
| Perceived temperature | 5°C (40°F) | 5°C (42°F) | 5°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (43°F) | 6°C (42°F) | 7°C (44°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 69% | 65% | 65% | 67% | 69% | 64% | 65% | 71% |
| Barometric pressure | 1008 hPa | 1012 hPa | 1014 hPa | 1017 hPa | 1018 hPa | 1019 hPa | 1019 hPa | 1019 hPa |
| Cloud cover | 77% | 70% | 17% | 76% | 54% | 79% | 19% | 45% |
| Heat index | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 10°C (50°F) |
| Dew point | 4°C (39°F) | 3°C (37°F) | 3°C (37°F) | 3°C (38°F) | 4°C (39°F) | 3°C (37°F) | 3°C (37°F) | 5°C (42°F) |
| Wind | ||||||||
| Speed | 43km/h (27mph) | 30km/h (19mph) | 27km/h (17mph) | 27km/h (17mph) | 28km/h (17mph) | 26km/h (16mph) | 27km/h (17mph) | 31km/h (19mph) |
| Gusts | 59km/h (36mph) | 44km/h (27mph) | 40km/h (25mph) | 39km/h (24mph) | 40km/h (25mph) | 41km/h (25mph) | 28km/h (17mph) | 46km/h (28mph) |
| Direction | 311° NW | 288° WNW | 271° W | 255° WSW | 251° WSW | 250° WSW | 244° WSW | 229° SW |
| Wind chill | 5°C (40°F) | 5°C (42°F) | 5°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (43°F) | 6°C (42°F) | 7°C (44°F) |
| Waves | ||||||||
| Height | 6.7m (22.1ft) | 7.1m (23.4ft) | 7.0m (22.9ft) | 6.2m (20.3ft) | 5.4m (17.7ft) | 4.7m (15.4ft) | 4.1m (13.6ft) | 3.7m (12.1ft) |
| Direction | 254° WSW | 251° WSW | 243° WSW | 246° WSW | 249° WSW | 252° WSW | 253° WSW | 255° WSW |
| Period | 17.2 sec. | 16.9 sec. | 17.2 sec. | 16.3 sec. | 15.8 sec. | 15.4 sec. | 14.7 sec. | 14.5 sec. |
| Significant height | 2.1m (6.9ft) | 2.1m (6.9ft) | 1.4m (4.6ft) | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) |
Sea weather on Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 08:16 and will set at 16:19 on the beach(es) of Cornwall. The outside temperature will be a high of 52°F t and a low of 45°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 33.6mph km/h (with gusts up to 39.8mph). Wave height will be up to 10.8ft 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) | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 10°C (50°F) | 7°C (45°F) | 8°C (46°F) |
| Perceived temperature | 7°C (45°F) | 7°C (45°F) | 6°C (44°F) | 7°C (44°F) | 7°C (44°F) | 6°C (42°F) | 3°C (38°F) | 5°C (41°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0.1in | 0in | 0in |
| Humidity | 76% | 80% | 86% | 82% | 82% | 92% | 86% | 76% |
| Barometric pressure | 1017 hPa | 1015 hPa | 1012 hPa | 1010 hPa | 1007 hPa | 1004 hPa | 1005 hPa | 1006 hPa |
| Cloud cover | 54% | 87% | 100% | 100% | 100% | 100% | 93% | 100% |
| Heat index | 11°C (51°F) | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 11°C (52°F) | 10°C (50°F) | 7°C (45°F) | 8°C (46°F) |
| Dew point | 7°C (44°F) | 8°C (46°F) | 8°C (47°F) | 8°C (46°F) | 8°C (46°F) | 9°C (48°F) | 5°C (41°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 35km/h (22mph) | 43km/h (27mph) | 46km/h (29mph) | 49km/h (30mph) | 54km/h (33mph) | 46km/h (29mph) | 29km/h (18mph) | 19km/h (12mph) |
| Gusts | 50km/h (31mph) | 60km/h (37mph) | 64km/h (40mph) | 54km/h (34mph) | 56km/h (35mph) | 53km/h (33mph) | 41km/h (25mph) | 26km/h (16mph) |
| Direction | 211° SSW | 202° SSW | 205° SSW | 201° SSW | 193° SSW | 196° SSW | 303° WNW | 273° W |
| Wind chill | 7°C (45°F) | 7°C (45°F) | 6°C (44°F) | 7°C (44°F) | 7°C (44°F) | 6°C (42°F) | 3°C (38°F) | 5°C (41°F) |
| Waves | ||||||||
| Height | 3.3m (10.9ft) | 3.0m (9.9ft) | 2.8m (9.3ft) | 2.7m (8.7ft) | 2.5m (8.2ft) | 2.4m (7.9ft) | 2.6m (8.4ft) | 2.5m (8.3ft) |
| Direction | 257° WSW | 258° WSW | 259° W | 260° W | 260° W | 260° W | 261° W | 262° W |
| Period | 14.3 sec. | 13.8 sec. | 13.4 sec. | 13.2 sec. | 13.1 sec. | 12.6 sec. | 12.1 sec. | 12.2 sec. |
| Significant height | 0.3m (1ft) | 0.3m (1ft) | 0.4m (1.3ft) | 0.5m (1.6ft) | 0.9m (3ft) | 1.1m (3.6ft) | 1.5m (4.9ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) |
Sea weather on Sunday 21 December 2025
On Sunday 21 December 2025, the sun will rise at 08:17 and will set at 16:20 on the beach(es) of Cornwall. The outside temperature will be a high of 49°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 19.3mph). 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 | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (47°F) | 9°C (47°F) | 9°C (48°F) |
| Perceived temperature | 6°C (43°F) | 6°C (44°F) | 6°C (44°F) | 6°C (43°F) | 7°C (44°F) | 6°C (43°F) | 7°C (44°F) | 6°C (44°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 73% | 70% | 70% | 81% | 74% | 70% | 71% | 72% |
| Barometric pressure | 1006 hPa | 1005 hPa | 1005 hPa | 1005 hPa | 1005 hPa | 1005 hPa | 1005 hPa | 1006 hPa |
| Cloud cover | 61% | 87% | 47% | 87% | 100% | 74% | 68% | 75% |
| Heat index | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) | 9°C (47°F) | 9°C (47°F) | 9°C (48°F) |
| Dew point | 4°C (40°F) | 4°C (39°F) | 4°C (39°F) | 6°C (42°F) | 5°C (40°F) | 3°C (38°F) | 4°C (38°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 18km/h (11mph) | 17km/h (11mph) | 21km/h (13mph) | 16km/h (10mph) | 15km/h (9mph) | 17km/h (11mph) | 12km/h (7mph) | 15km/h (9mph) |
| Gusts | 26km/h (16mph) | 26km/h (16mph) | 31km/h (19mph) | 24km/h (15mph) | 22km/h (13mph) | 27km/h (17mph) | 19km/h (12mph) | 22km/h (14mph) |
| Direction | 262° W | 289° WNW | 259° W | 283° WNW | 327° NNW | 311° NW | 288° WNW | 270° W |
| Wind chill | 6°C (43°F) | 6°C (44°F) | 6°C (44°F) | 6°C (43°F) | 7°C (44°F) | 6°C (43°F) | 7°C (44°F) | 6°C (44°F) |
| Waves | ||||||||
| Height | 2.7m (8.7ft) | 3.1m (10.2ft) | 2.9m (9.6ft) | 2.8m (9.1ft) | 2.6m (8.6ft) | 2.5m (8.2ft) | 2.4m (7.8ft) | 2.2m (7.2ft) |
| Direction | 265° W | 265° W | 266° W | 266° W | 266° W | 267° W | 267° W | 269° W |
| Period | 12.1 sec. | 11.7 sec. | 12.0 sec. | 12.0 sec. | 11.9 sec. | 11.8 sec. | 11.6 sec. | 11.4 sec. |
| Significant height | 0.9m (3ft) | 1.8m (5.9ft) | 1.2m (3.9ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.4m (4.6ft) | 1.3m (4.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) |