Sea weather in Castlerock in Northern Ireland All the beach weather in Castlerock
All the essential weather information for enjoying the beach in Castlerock in Northern Ireland, 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 Castlerock over the next 7 days?
Discover the best moment to go to the beach in Castlerock in Northern Ireland this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Castlerock. 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 16 March 2025 | 40°F to 47°F | 5mph | recommended | all the sea weather |
| Monday 17 March 2025 | 38°F to 45°F | 8.1mph | discouraged | all the sea weather |
| Tuesday 18 March 2025 | 38°F to 45°F | 9.3mph | discouraged | all the sea weather |
| Wednesday 19 March 2025 | 38°F to 49°F | 6.8mph | recommended | all the sea weather |
| Thursday 20 March 2025 | 40°F to 50°F | 6.8mph | recommended | all the sea weather |
| Friday 21 March 2025 | 41°F to 50°F | 15.5mph | discouraged | all the sea weather |
| Saturday 22 March 2025 | 45°F to 50°F | 8.7mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Castlerock
Sea weather on Sunday 16 March 2025
On Sunday 16 March 2025, the sun will rise at 06:39 and will set at 18:33 on the beach(es) of Castlerock. The outside temperature will be a high of 47°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 8.1mph km/h (with gusts up to 16.2mph). Wave height will be up to 2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | |  | |  | |  |
| Outside temperature | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (45°F) | 7°C (44°F) | 7°C (45°F) | 4°C (39°F) | 6°C (42°F) |
| Perceived temperature | 4°C (40°F) | 5°C (40°F) | 5°C (42°F) | 6°C (43°F) | 5°C (40°F) | 5°C (41°F) | 1°C (33°F) | 4°C (39°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 76% | 74% | 75% | 72% | 63% | 64% | 73% | 72% |
| Barometric pressure | 1027 hPa | 1027 hPa | 1027 hPa | 1029 hPa | 1029 hPa | 1029 hPa | 1029 hPa | 1031 hPa |
| Cloud cover | 96% | 93% | 79% | 0% | 0% | 2% | 0% | 90% |
| Heat index | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (45°F) | 7°C (44°F) | 7°C (45°F) | 4°C (39°F) | 6°C (42°F) |
| Dew point | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 0°C (32°F) | 1°C (34°F) | -1°C (31°F) | 1°C (34°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 10km/h (6mph) | 6km/h (4mph) | 7km/h (4mph) | 9km/h (6mph) | 12km/h (7mph) | 13km/h (8mph) | 8km/h (5mph) |
| Gusts | 21km/h (13mph) | 17km/h (11mph) | 11km/h (7mph) | 10km/h (6mph) | 18km/h (11mph) | 23km/h (14mph) | 26km/h (16mph) | 16km/h (10mph) |
| Direction | 344° NNW | 352° N | 19° NNE | 92° E | 72° ENE | 81° E | 103° ESE | 136° SE |
| Wind chill | 4°C (40°F) | 5°C (40°F) | 5°C (42°F) | 6°C (43°F) | 5°C (40°F) | 5°C (41°F) | 1°C (33°F) | 4°C (39°F) |
| Waves | ||||||||
| Height | 0.5m (1.8ft) | 0.5m (1.8ft) | 0.5m (1.8ft) | 0.6m (1.8ft) | 0.6m (1.8ft) | 0.6m (1.8ft) | 0.5m (1.8ft) | 0.5m (1.7ft) |
| Direction | 320° NW | 322° NW | 325° NW | 328° NNW | 330° NNW | 329° NNW | 330° NNW | 329° NNW |
| Period | 7.4 sec. | 7.3 sec. | 7.2 sec. | 7.3 sec. | 7.9 sec. | 7.8 sec. | 7.5 sec. | 7.4 sec. |
| Significant height | 0.6m (2ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) |
Sea weather on Monday 17 March 2025
On Monday 17 March 2025, the sun will rise at 06:36 and will set at 18:35 on the beach(es) of Castlerock. The outside temperature will be a high of 45°F t and a low of 38°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 14.3mph km/h (with gusts up to 19.9mph). 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 | 7°C (44°F) | 5°C (42°F) | 4°C (38°F) | 6°C (42°F) | 6°C (44°F) | 7°C (44°F) | 5°C (41°F) | 3°C (38°F) |
| Perceived temperature | 5°C (41°F) | 2°C (36°F) | -0°C (32°F) | 1°C (35°F) | 2°C (36°F) | 3°C (37°F) | 2°C (35°F) | -0°C (32°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 69% | 80% | 88% | 80% | 70% | 67% | 71% | 79% |
| Barometric pressure | 1031 hPa | 1031 hPa | 1031 hPa | 1032 hPa | 1031 hPa | 1030 hPa | 1029 hPa | 1029 hPa |
| Cloud cover | 97% | 52% | 0% | 29% | 80% | 78% | 36% | 2% |
| Heat index | 7°C (44°F) | 5°C (42°F) | 4°C (38°F) | 6°C (42°F) | 6°C (44°F) | 7°C (44°F) | 5°C (41°F) | 3°C (38°F) |
| Dew point | 1°C (34°F) | 2°C (36°F) | 2°C (35°F) | 2°C (36°F) | 1°C (34°F) | 1°C (34°F) | 0°C (33°F) | -0°C (32°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 15km/h (9mph) | 17km/h (10mph) | 23km/h (14mph) | 23km/h (15mph) | 23km/h (14mph) | 16km/h (10mph) | 13km/h (8mph) |
| Gusts | 14km/h (9mph) | 27km/h (17mph) | 30km/h (19mph) | 30km/h (19mph) | 31km/h (20mph) | 32km/h (20mph) | 26km/h (16mph) | 26km/h (16mph) |
| Direction | 142° SE | 128° SE | 126° SE | 125° SE | 126° SE | 126° SE | 136° SE | 123° ESE |
| Wind chill | 5°C (41°F) | 2°C (36°F) | -0°C (32°F) | 1°C (35°F) | 2°C (36°F) | 3°C (37°F) | 2°C (35°F) | -0°C (32°F) |
| Waves | ||||||||
| Height | 0.5m (1.7ft) | 0.5m (1.7ft) | 0.5m (1.8ft) | 0.6m (2.1ft) | 0.7m (2.5ft) | 0.7m (2.2ft) | 0.5m (1.8ft) | 0.5m (1.6ft) |
| Direction | 328° NNW | 327° NNW | 326° NNW | 307° NW | 307° NW | 305° NW | 309° NW | 296° WNW |
| Period | 7.3 sec. | 7.0 sec. | 6.9 sec. | 6.7 sec. | 6.9 sec. | 6.8 sec. | 7.8 sec. | 7.7 sec. |
| Significant height | 0.5m (1.6ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) |
Sea weather on Tuesday 18 March 2025
On Tuesday 18 March 2025, the sun will rise at 06:33 and will set at 18:37 on the beach(es) of Castlerock. The outside temperature will be a high of 45°F t and a low of 38°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 28mph). 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 | 4°C (38°F) | 4°C (39°F) | 3°C (37°F) | 5°C (41°F) | 7°C (44°F) | 7°C (45°F) | 5°C (42°F) | 4°C (39°F) |
| Perceived temperature | -0°C (31°F) | -1°C (30°F) | -2°C (28°F) | -0°C (32°F) | 2°C (36°F) | 3°C (37°F) | 1°C (35°F) | 1°C (33°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 84% | 83% | 79% | 73% | 69% | 68% | 75% | 83% |
| Barometric pressure | 1028 hPa | 1026 hPa | 1026 hPa | 1025 hPa | 1024 hPa | 1022 hPa | 1022 hPa | 1023 hPa |
| Cloud cover | 1% | 12% | 9% | 97% | 47% | 19% | 18% | 2% |
| Heat index | 4°C (38°F) | 4°C (39°F) | 3°C (37°F) | 5°C (41°F) | 7°C (44°F) | 7°C (45°F) | 5°C (42°F) | 4°C (39°F) |
| Dew point | 1°C (34°F) | 1°C (34°F) | -0°C (31°F) | 1°C (33°F) | 1°C (34°F) | 2°C (35°F) | 1°C (34°F) | 1°C (34°F) |
| Wind | ||||||||
| Speed | 17km/h (11mph) | 23km/h (14mph) | 25km/h (15mph) | 31km/h (19mph) | 31km/h (19mph) | 30km/h (19mph) | 21km/h (13mph) | 15km/h (9mph) |
| Gusts | 31km/h (19mph) | 36km/h (23mph) | 38km/h (24mph) | 41km/h (26mph) | 43km/h (27mph) | 45km/h (28mph) | 38km/h (24mph) | 31km/h (19mph) |
| Direction | 114° ESE | 122° ESE | 121° ESE | 126° SE | 128° SE | 130° SE | 132° SE | 127° SE |
| Wind chill | -0°C (31°F) | -1°C (30°F) | -2°C (28°F) | -0°C (32°F) | 2°C (36°F) | 3°C (37°F) | 1°C (35°F) | 1°C (33°F) |
| Waves | ||||||||
| Height | 0.5m (1.7ft) | 0.6m (1.9ft) | 0.6m (2.0ft) | 0.6m (2.1ft) | 0.7m (2.3ft) | 0.6m (2.0ft) | 0.5m (1.6ft) | 0.4m (1.3ft) |
| Direction | 293° WNW | 289° WNW | 288° WNW | 114° ESE | 117° ESE | 114° ESE | 297° WNW | 297° WNW |
| Period | 7.5 sec. | 13.8 sec. | 13.3 sec. | 13.1 sec. | 12.3 sec. | 12.1 sec. | 15.3 sec. | 14.5 sec. |
| Significant height | 0.6m (2ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.4m (1.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) |
Sea weather on Wednesday 19 March 2025
On Wednesday 19 March 2025, the sun will rise at 06:31 and will set at 18:39 on the beach(es) of Castlerock. The outside temperature will be a high of 49°F t and a low of 38°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 18.6mph). Wave height will be up to 1.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 4°C (40°F) | 4°C (39°F) | 3°C (38°F) | 6°C (42°F) | 8°C (46°F) | 9°C (47°F) | 6°C (43°F) | 5°C (41°F) |
| Perceived temperature | 1°C (34°F) | 1°C (33°F) | -1°C (31°F) | 2°C (36°F) | 5°C (41°F) | 6°C (43°F) | 3°C (38°F) | 2°C (36°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 85% | 88% | 89% | 78% | 66% | 66% | 80% | 85% |
| Barometric pressure | 1022 hPa | 1021 hPa | 1021 hPa | 1021 hPa | 1021 hPa | 1020 hPa | 1019 hPa | 1021 hPa |
| Cloud cover | 0% | 0% | 6% | 5% | 5% | 6% | 7% | 48% |
| Heat index | 4°C (40°F) | 4°C (39°F) | 3°C (38°F) | 6°C (42°F) | 8°C (46°F) | 9°C (47°F) | 6°C (43°F) | 5°C (41°F) |
| Dew point | 2°C (35°F) | 2°C (36°F) | 2°C (35°F) | 2°C (36°F) | 2°C (35°F) | 2°C (36°F) | 3°C (37°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 14km/h (9mph) | 15km/h (9mph) | 17km/h (10mph) | 18km/h (11mph) | 17km/h (11mph) | 13km/h (8mph) | 13km/h (8mph) | 11km/h (7mph) |
| Gusts | 28km/h (17mph) | 29km/h (18mph) | 30km/h (18mph) | 25km/h (15mph) | 26km/h (16mph) | 24km/h (15mph) | 28km/h (17mph) | 23km/h (14mph) |
| Direction | 124° ESE | 128° SE | 132° SE | 131° SE | 133° SE | 130° SE | 119° ESE | 147° SSE |
| Wind chill | 1°C (34°F) | 1°C (33°F) | -1°C (31°F) | 2°C (36°F) | 5°C (41°F) | 6°C (43°F) | 3°C (38°F) | 2°C (36°F) |
| Waves | ||||||||
| Height | 0.4m (1.2ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.4m (1.4ft) | 0.4m (1.4ft) | 0.4m (1.3ft) | 0.3m (1.1ft) |
| Direction | 294° WNW | 294° WNW | 291° WNW | 292° WNW | 296° WNW | 293° WNW | 296° WNW | 299° WNW |
| Period | 13.4 sec. | 13.1 sec. | 12.2 sec. | 12.0 sec. | 11.8 sec. | 11.3 sec. | 11.1 sec. | 11.0 sec. |
| Significant height | 0.5m (1.6ft) | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) |
Sea weather on Thursday 20 March 2025
On Thursday 20 March 2025, the sun will rise at 06:28 and will set at 18:41 on the beach(es) of Castlerock. 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 11.2mph km/h (with gusts up to 18.6mph). Wave height will be up to 2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 4°C (40°F) | 4°C (40°F) | 5°C (40°F) | 8°C (46°F) | 10°C (50°F) | 10°C (50°F) | 7°C (45°F) | 6°C (43°F) |
| Perceived temperature | 2°C (35°F) | 2°C (35°F) | 2°C (36°F) | 6°C (42°F) | 8°C (46°F) | 8°C (46°F) | 5°C (41°F) | 4°C (39°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 84% | 82% | 82% | 76% | 73% | 71% | 79% | 79% |
| Barometric pressure | 1020 hPa | 1019 hPa | 1019 hPa | 1019 hPa | 1018 hPa | 1017 hPa | 1016 hPa | 1016 hPa |
| Cloud cover | 24% | 24% | 45% | 14% | 14% | 34% | 21% | 12% |
| Heat index | 4°C (40°F) | 4°C (40°F) | 5°C (40°F) | 8°C (46°F) | 10°C (50°F) | 10°C (50°F) | 7°C (45°F) | 6°C (43°F) |
| Dew point | 2°C (35°F) | 2°C (35°F) | 2°C (35°F) | 4°C (39°F) | 5°C (41°F) | 5°C (41°F) | 4°C (39°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 10km/h (6mph) | 9km/h (6mph) | 11km/h (7mph) | 15km/h (9mph) | 18km/h (11mph) | 13km/h (8mph) | 11km/h (7mph) |
| Gusts | 21km/h (13mph) | 22km/h (13mph) | 20km/h (12mph) | 16km/h (10mph) | 24km/h (15mph) | 30km/h (19mph) | 26km/h (16mph) | 23km/h (14mph) |
| Direction | 156° SSE | 156° SSE | 139° SE | 130° SE | 121° ESE | 114° ESE | 107° ESE | 100° E |
| Wind chill | 2°C (35°F) | 2°C (35°F) | 2°C (36°F) | 6°C (42°F) | 8°C (46°F) | 8°C (46°F) | 5°C (41°F) | 4°C (39°F) |
| Waves | ||||||||
| Height | 0.3m (1.0ft) | 0.3m (1.0ft) | 0.4m (1.2ft) | 0.5m (1.5ft) | 0.5m (1.8ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.6m (2.0ft) |
| Direction | 300° WNW | 298° WNW | 299° WNW | 299° WNW | 80° E | 299° WNW | 303° WNW | 67° ENE |
| Period | 10.8 sec. | 10.1 sec. | 10.0 sec. | 9.8 sec. | 9.5 sec. | 9.2 sec. | 9.0 sec. | 8.9 sec. |
| Significant height | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.4m (1.3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) |
Sea weather on Friday 21 March 2025
On Friday 21 March 2025, the sun will rise at 06:26 and will set at 18:43 on the beach(es) of Castlerock. The outside temperature will be a high of 50°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 15.5mph km/h (with gusts up to 24.9mph). 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 (42°F) | 5°C (41°F) | 5°C (40°F) | 7°C (44°F) | 9°C (47°F) | 10°C (50°F) | 9°C (47°F) | 9°C (48°F) |
| Perceived temperature | 3°C (37°F) | 2°C (35°F) | 1°C (34°F) | 3°C (38°F) | 6°C (42°F) | 7°C (44°F) | 5°C (42°F) | 5°C (42°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 87% | 91% | 90% | 82% | 76% | 78% | 84% | 85% |
| Barometric pressure | 1015 hPa | 1014 hPa | 1013 hPa | 1012 hPa | 1011 hPa | 1009 hPa | 1009 hPa | 1009 hPa |
| Cloud cover | 3% | 9% | 51% | 54% | 15% | 72% | 73% | 100% |
| Heat index | 6°C (42°F) | 5°C (41°F) | 5°C (40°F) | 7°C (44°F) | 9°C (47°F) | 10°C (50°F) | 9°C (47°F) | 9°C (48°F) |
| Dew point | 4°C (39°F) | 4°C (39°F) | 3°C (37°F) | 4°C (39°F) | 5°C (40°F) | 6°C (43°F) | 6°C (43°F) | 6°C (44°F) |
| Wind | ||||||||
| Speed | 14km/h (9mph) | 14km/h (9mph) | 14km/h (9mph) | 19km/h (12mph) | 20km/h (12mph) | 24km/h (15mph) | 23km/h (15mph) | 25km/h (15mph) |
| Gusts | 29km/h (18mph) | 27km/h (17mph) | 25km/h (15mph) | 25km/h (16mph) | 29km/h (18mph) | 40km/h (25mph) | 40km/h (25mph) | 40km/h (25mph) |
| Direction | 98° E | 110° ESE | 103° ESE | 95° E | 88° E | 86° E | 98° E | 99° E |
| Wind chill | 3°C (37°F) | 2°C (35°F) | 1°C (34°F) | 3°C (38°F) | 6°C (42°F) | 7°C (44°F) | 5°C (42°F) | 5°C (42°F) |
| Waves | ||||||||
| Height | 0.7m (2.3ft) | 0.7m (2.2ft) | 0.7m (2.4ft) | 0.7m (2.4ft) | 0.6m (2.0ft) | 0.5m (1.5ft) | 0.4m (1.3ft) | 0.5m (1.5ft) |
| Direction | 72° ENE | 68° ENE | 69° ENE | 71° ENE | 65° ENE | 63° ENE | 61° ENE | 65° ENE |
| Period | 10.2 sec. | 9.9 sec. | 8.3 sec. | 7.2 sec. | 6.8 sec. | 6.4 sec. | 6.2 sec. | 5.9 sec. |
| Significant height | 0.6m (2ft) | 0.6m (2ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.3m (1ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) |
Sea weather on Saturday 22 March 2025
On Saturday 22 March 2025, the sun will rise at 06:23 and will set at 18:45 on the beach(es) of Castlerock. The outside temperature will be a high of 50°F t and a low of 45°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 25.5mph). Wave height will be up to 1.6ft 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) | 7°C (45°F) | 8°C (47°F) | 9°C (48°F) | 9°C (49°F) | 10°C (50°F) | 9°C (48°F) | 9°C (47°F) |
| Perceived temperature | 5°C (41°F) | 3°C (38°F) | 5°C (41°F) | 6°C (42°F) | 7°C (44°F) | 7°C (45°F) | 6°C (44°F) | 6°C (43°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 85% | 91% | 93% | 94% | 92% | 86% | 87% | 92% |
| Barometric pressure | 1007 hPa | 1006 hPa | 1005 hPa | 1004 hPa | 1004 hPa | 1003 hPa | 1003 hPa | 1003 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 92% | 88% | 100% | 100% |
| Heat index | 9°C (47°F) | 7°C (45°F) | 8°C (47°F) | 9°C (48°F) | 9°C (49°F) | 10°C (50°F) | 9°C (48°F) | 9°C (47°F) |
| Dew point | 6°C (43°F) | 6°C (43°F) | 7°C (45°F) | 8°C (46°F) | 8°C (47°F) | 8°C (46°F) | 7°C (44°F) | 7°C (45°F) |
| Wind | ||||||||
| Speed | 25km/h (15mph) | 28km/h (18mph) | 23km/h (14mph) | 24km/h (15mph) | 21km/h (13mph) | 20km/h (13mph) | 17km/h (11mph) | 14km/h (9mph) |
| Gusts | 38km/h (24mph) | 41km/h (26mph) | 34km/h (21mph) | 36km/h (23mph) | 33km/h (20mph) | 33km/h (20mph) | 30km/h (19mph) | 24km/h (15mph) |
| Direction | 94° E | 93° E | 104° ESE | 123° ESE | 127° SE | 131° SE | 130° SE | 114° ESE |
| Wind chill | 5°C (41°F) | 3°C (38°F) | 5°C (41°F) | 6°C (42°F) | 7°C (44°F) | 7°C (45°F) | 6°C (44°F) | 6°C (43°F) |
| Waves | ||||||||
| Height | 0.5m (1.7ft) | 0.5m (1.6ft) | 0.4m (1.4ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.4m (1.2ft) | 0.4m (1.2ft) |
| Direction | 64° ENE | 61° ENE | 302° WNW | 299° WNW | 295° WNW | 296° WNW | 292° WNW | 294° WNW |
| Period | 5.6 sec. | 5.4 sec. | 16.1 sec. | 3.2 sec. | 13.9 sec. | 13.2 sec. | 12.2 sec. | 11.9 sec. |
| Significant height | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) | 6°C (44°F) |