Sea weather in Dalkey Island in Ireland All the beach weather in Dalkey Island
All the essential weather information for enjoying the beach in Dalkey Island in 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 Dalkey Island over the next 7 days?
Discover the best moment to go to the beach in Dalkey Island in Ireland this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Dalkey Island. 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 54°F | 24.2mph | not recommended | all the sea weather |
| Monday 15 December 2025 | 45°F to 50°F | 8.7mph | discouraged | all the sea weather |
| Tuesday 16 December 2025 | 41°F to 45°F | 6.8mph | discouraged | all the sea weather |
| Wednesday 17 December 2025 | 45°F to 52°F | 6.8mph | not recommended | all the sea weather |
| Thursday 18 December 2025 | 47°F to 52°F | 41mph | not recommended | all the sea weather |
| Friday 19 December 2025 | 45°F to 49°F | 9.3mph | not recommended | all the sea weather |
| Saturday 20 December 2025 | 45°F to 49°F | 15.5mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Dalkey Island
Sea weather on Sunday 14 December 2025
On Sunday 14 December 2025, the sun will rise at 08:32 and will set at 16:06 on the beach(es) of Dalkey Island. 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 29.8mph km/h (with gusts up to 32.3mph). 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) | 12°C (53°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 12°C (53°F) |
| Perceived temperature | 8°C (46°F) | 8°C (46°F) | 8°C (47°F) | 7°C (45°F) | 7°C (44°F) | 7°C (45°F) | 7°C (45°F) | 8°C (47°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 84% | 86% | 86% | 91% | 90% | 89% | 92% | 89% |
| Barometric pressure | 1013 hPa | 1012 hPa | 1010 hPa | 1008 hPa | 1005 hPa | 1002 hPa | 1000 hPa | 999 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Heat index | 11°C (52°F) | 11°C (52°F) | 12°C (53°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 11°C (52°F) | 12°C (53°F) |
| Dew point | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 10°C (49°F) | 9°C (49°F) | 9°C (49°F) | 10°C (49°F) | 10°C (50°F) |
| Wind | ||||||||
| Speed | 42km/h (26mph) | 44km/h (27mph) | 38km/h (23mph) | 42km/h (26mph) | 48km/h (30mph) | 45km/h (28mph) | 41km/h (25mph) | 39km/h (24mph) |
| Gusts | 43km/h (27mph) | 51km/h (31mph) | 45km/h (28mph) | 46km/h (29mph) | 52km/h (32mph) | 52km/h (32mph) | 45km/h (28mph) | 40km/h (25mph) |
| Direction | 205° SSW | 205° SSW | 197° SSW | 193° SSW | 189° S | 190° S | 190° S | 195° SSW |
| Wind chill | 8°C (46°F) | 8°C (46°F) | 8°C (47°F) | 7°C (45°F) | 7°C (44°F) | 7°C (45°F) | 7°C (45°F) | 8°C (47°F) |
| Waves | ||||||||
| Height | 1.7m (5.7ft) | 1.8m (6.0ft) | 2.0m (6.4ft) | 2.0m (6.6ft) | 2.1m (7.0ft) | 2.4m (7.8ft) | 2.5m (8.3ft) | 2.3m (7.6ft) |
| Direction | 166° SSE | 167° SSE | 165° SSE | 160° SSE | 159° SSE | 157° SSE | 157° SSE | 156° SSE |
| Period | 8.4 sec. | 8.4 sec. | 8.4 sec. | 8.4 sec. | 8.4 sec. | 8.4 sec. | 8.4 sec. | 8.4 sec. |
| Significant height | 1.5m (4.9ft) | 1.6m (5.2ft) | 1.7m (5.6ft) | 1.7m (5.6ft) | 1.9m (6.2ft) | 2.1m (6.9ft) | 2.1m (6.9ft) | 1.9m (6.2ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) |
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 08:33 and will set at 16:06 on the beach(es) of Dalkey Island. 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 14.9mph km/h (with gusts up to 20.5mph). Wave height will be up to 6.6ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | |  |  | | | | |
| Outside temperature | 10°C (50°F) | 9°C (49°F) | 9°C (48°F) | 8°C (47°F) | 8°C (47°F) | 8°C (46°F) | 7°C (45°F) | 8°C (46°F) |
| Perceived temperature | 7°C (45°F) | 7°C (44°F) | 6°C (44°F) | 6°C (43°F) | 6°C (43°F) | 5°C (41°F) | 4°C (40°F) | 5°C (41°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 87% | 84% | 78% | 76% | 69% | 69% | 73% | 78% |
| Barometric pressure | 1000 hPa | 1001 hPa | 1001 hPa | 1002 hPa | 1003 hPa | 1003 hPa | 1004 hPa | 1006 hPa |
| Cloud cover | 100% | 92% | 66% | 49% | 46% | 6% | 11% | 50% |
| Heat index | 10°C (50°F) | 9°C (49°F) | 9°C (48°F) | 8°C (47°F) | 8°C (47°F) | 8°C (46°F) | 7°C (45°F) | 8°C (46°F) |
| Dew point | 8°C (46°F) | 7°C (44°F) | 5°C (42°F) | 4°C (40°F) | 3°C (37°F) | 2°C (36°F) | 3°C (37°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 24km/h (15mph) | 16km/h (10mph) | 17km/h (10mph) | 14km/h (9mph) | 12km/h (7mph) | 15km/h (9mph) | 14km/h (9mph) | 14km/h (9mph) |
| Gusts | 33km/h (21mph) | 22km/h (14mph) | 23km/h (14mph) | 19km/h (12mph) | 17km/h (11mph) | 26km/h (16mph) | 25km/h (15mph) | 20km/h (13mph) |
| Direction | 316° NW | 324° NW | 321° NW | 310° NW | 305° NW | 310° NW | 297° WNW | 287° WNW |
| Wind chill | 7°C (45°F) | 7°C (44°F) | 6°C (44°F) | 6°C (43°F) | 6°C (43°F) | 5°C (41°F) | 4°C (40°F) | 5°C (41°F) |
| Waves | ||||||||
| Height | 2.0m (6.5ft) | 1.4m (4.7ft) | 1.1m (3.7ft) | 0.9m (3.0ft) | 0.8m (2.5ft) | 0.6m (2.1ft) | 0.5m (1.8ft) | 0.5m (1.6ft) |
| Direction | 153° SSE | 153° SSE | 154° SSE | 155° SSE | 156° SSE | 158° SSE | 159° SSE | 160° SSE |
| Period | 8.8 sec. | 8.8 sec. | 8.6 sec. | 8.2 sec. | 8.1 sec. | 7.8 sec. | 7.5 sec. | 7.4 sec. |
| Significant height | 0.9m (3ft) | 0.5m (1.6ft) | 0.6m (2ft) | 1.2m (3.9ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.6m (2ft) |
| 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 08:34 and will set at 16:06 on the beach(es) of Dalkey Island. The outside temperature will be a high of 45°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 8.7mph km/h (with gusts up to 13.1mph). 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 | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 5°C (42°F) | 5°C (41°F) | 5°C (41°F) | 7°C (44°F) |
| Perceived temperature | 5°C (41°F) | 5°C (40°F) | 4°C (40°F) | 4°C (39°F) | 3°C (37°F) | 4°C (40°F) | 3°C (38°F) | 4°C (40°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 80% | 79% | 77% | 76% | 70% | 66% | 69% | 71% |
| Barometric pressure | 1007 hPa | 1008 hPa | 1010 hPa | 1013 hPa | 1015 hPa | 1015 hPa | 1016 hPa | 1017 hPa |
| Cloud cover | 46% | 7% | 8% | 9% | 0% | 0% | 3% | 3% |
| Heat index | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 5°C (42°F) | 5°C (41°F) | 5°C (41°F) | 7°C (44°F) |
| Dew point | 4°C (39°F) | 4°C (39°F) | 3°C (38°F) | 3°C (37°F) | 0°C (33°F) | -1°C (30°F) | -0°C (32°F) | 2°C (35°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 14km/h (9mph) | 14km/h (9mph) | 14km/h (9mph) | 10km/h (6mph) | 5km/h (3mph) | 8km/h (5mph) | 11km/h (7mph) |
| Gusts | 19km/h (12mph) | 20km/h (12mph) | 20km/h (13mph) | 21km/h (13mph) | 21km/h (13mph) | 10km/h (6mph) | 17km/h (10mph) | 18km/h (11mph) |
| Direction | 290° WNW | 292° WNW | 288° WNW | 298° WNW | 293° WNW | 285° WNW | 205° SSW | 200° SSW |
| Wind chill | 5°C (41°F) | 5°C (40°F) | 4°C (40°F) | 4°C (39°F) | 3°C (37°F) | 4°C (40°F) | 3°C (38°F) | 4°C (40°F) |
| Waves | ||||||||
| Height | 0.4m (1.5ft) | 0.4m (1.3ft) | 0.4m (1.2ft) | 0.3m (1.1ft) | 0.3m (1.0ft) | 0.2m (0.8ft) | 0.2m (0.8ft) | 0.3m (1.0ft) |
| Direction | 163° SSE | 164° SSE | 165° SSE | 166° SSE | 166° SSE | 166° SSE | 166° SSE | 166° SSE |
| Period | 7.1 sec. | 6.8 sec. | 6.7 sec. | 6.6 sec. | 6.6 sec. | 6.6 sec. | 6.7 sec. | 17.2 sec. |
| Significant height | 0.6m (2ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.3m (1ft) | 0.3m (1ft) | 0.6m (2ft) |
| 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 08:35 and will set at 16:06 on the beach(es) of Dalkey Island. 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 29.8mph km/h (with gusts up to 40.4mph). Wave height will be up to 7.5ft 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 (45°F) | 9°C (47°F) | 9°C (48°F) | 9°C (49°F) | 10°C (51°F) | 11°C (51°F) | 10°C (51°F) |
| Perceived temperature | 3°C (37°F) | 3°C (38°F) | 4°C (40°F) | 4°C (40°F) | 5°C (40°F) | 7°C (44°F) | 9°C (47°F) | 9°C (48°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 73% | 81% | 74% | 80% | 88% | 90% | 93% | 83% |
| Barometric pressure | 1017 hPa | 1016 hPa | 1014 hPa | 1012 hPa | 1011 hPa | 1010 hPa | 1010 hPa | 1012 hPa |
| Cloud cover | 8% | 31% | 84% | 77% | 100% | 91% | 100% | 54% |
| Heat index | 7°C (44°F) | 7°C (45°F) | 9°C (47°F) | 9°C (48°F) | 9°C (49°F) | 10°C (51°F) | 11°C (51°F) | 10°C (51°F) |
| Dew point | 2°C (35°F) | 4°C (40°F) | 4°C (40°F) | 6°C (43°F) | 7°C (45°F) | 9°C (48°F) | 10°C (49°F) | 7°C (45°F) |
| Wind | ||||||||
| Speed | 20km/h (12mph) | 24km/h (15mph) | 36km/h (22mph) | 48km/h (30mph) | 47km/h (29mph) | 36km/h (22mph) | 15km/h (10mph) | 11km/h (7mph) |
| Gusts | 31km/h (19mph) | 35km/h (22mph) | 50km/h (31mph) | 65km/h (40mph) | 52km/h (32mph) | 40km/h (25mph) | 26km/h (16mph) | 17km/h (10mph) |
| Direction | 195° SSW | 199° SSW | 191° S | 191° S | 193° SSW | 194° SSW | 210° SSW | 295° WNW |
| Wind chill | 3°C (37°F) | 3°C (38°F) | 4°C (40°F) | 4°C (40°F) | 5°C (40°F) | 7°C (44°F) | 9°C (47°F) | 9°C (48°F) |
| Waves | ||||||||
| Height | 0.6m (2.0ft) | 1.0m (3.2ft) | 1.4m (4.7ft) | 1.9m (6.1ft) | 2.1m (7.1ft) | 2.3m (7.5ft) | 2.2m (7.1ft) | 2.1m (6.8ft) |
| Direction | 173° S | 170° S | 171° S | 167° SSE | 164° SSE | 165° SSE | 160° SSE | 160° SSE |
| Period | 17.0 sec. | 17.0 sec. | 17.0 sec. | 17.0 sec. | 17.0 sec. | 17.0 sec. | 17.0 sec. | 17.0 sec. |
| Significant height | 1.1m (3.6ft) | 1.4m (4.6ft) | 1.6m (5.2ft) | 1.9m (6.2ft) | 2.1m (6.9ft) | 2.2m (7.2ft) | 1.8m (5.9ft) | 1.6m (5.2ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 08:36 and will set at 16:07 on the beach(es) of Dalkey Island. The outside temperature will be a high of 52°F t and a low of 47°F. Precipitation is in the forecast (0.4in 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 44.7mph km/h (with gusts up to 45.4mph). Wave height will be up to 9.8ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | |  |  | | | | |
| Outside temperature | 10°C (49°F) | 10°C (49°F) | 9°C (49°F) | 11°C (52°F) | 10°C (51°F) | 11°C (52°F) | 9°C (48°F) | 8°C (47°F) |
| Perceived temperature | 9°C (48°F) | 8°C (47°F) | 5°C (41°F) | 6°C (43°F) | 5°C (41°F) | 7°C (44°F) | 3°C (38°F) | 3°C (37°F) |
| Precipitation | 0in | 0in | 0.1in | 0.1in | 0.2in | 0in | 0in | 0in |
| Humidity | 78% | 77% | 92% | 90% | 89% | 90% | 73% | 73% |
| Barometric pressure | 1012 hPa | 1011 hPa | 1004 hPa | 999 hPa | 994 hPa | 990 hPa | 991 hPa | 990 hPa |
| Cloud cover | 8% | 100% | 100% | 100% | 100% | 100% | 24% | 29% |
| Heat index | 10°C (49°F) | 10°C (49°F) | 9°C (49°F) | 11°C (52°F) | 10°C (51°F) | 11°C (52°F) | 9°C (48°F) | 8°C (47°F) |
| Dew point | 6°C (43°F) | 6°C (42°F) | 8°C (46°F) | 9°C (49°F) | 9°C (47°F) | 10°C (49°F) | 4°C (39°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 6km/h (4mph) | 9km/h (6mph) | 37km/h (23mph) | 67km/h (42mph) | 72km/h (45mph) | 62km/h (39mph) | 62km/h (38mph) | 66km/h (41mph) |
| Gusts | 10km/h (6mph) | 14km/h (9mph) | 51km/h (32mph) | 71km/h (44mph) | 73km/h (45mph) | 65km/h (40mph) | 66km/h (41mph) | 73km/h (45mph) |
| Direction | 272° W | 60° ENE | 92° E | 170° S | 170° S | 177° S | 191° SSW | 191° SSW |
| Wind chill | 9°C (48°F) | 8°C (47°F) | 5°C (41°F) | 6°C (43°F) | 5°C (41°F) | 7°C (44°F) | 3°C (38°F) | 3°C (37°F) |
| Waves | ||||||||
| Height | 1.8m (5.9ft) | 1.4m (4.6ft) | 1.2m (4.1ft) | 2.1m (6.9ft) | 2.7m (9.0ft) | 3.0m (9.9ft) | 3.0m (9.8ft) | 3.0m (10.0ft) |
| Direction | 156° SSE | 155° SSE | 155° SSE | 157° SSE | 152° SSE | 151° SSE | 151° SSE | 151° SSE |
| Period | 17.0 sec. | 8.0 sec. | 8.0 sec. | 7.2 sec. | 7.7 sec. | 7.8 sec. | 8.4 sec. | 8.6 sec. |
| Significant height | 0.9m (3ft) | 0.2m (0.7ft) | 0.4m (1.3ft) | 1.9m (6.2ft) | 2.4m (7.9ft) | 2.8m (9.2ft) | 2.5m (8.2ft) | 2.5m (8.2ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 08:36 and will set at 16:07 on the beach(es) of Dalkey Island. The outside temperature will be a high of 49°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! Be careful, the sea will be generally rough with a wind speed of up to 44.1mph km/h (with gusts up to 54.7mph). 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 | 7°C (45°F) | 9°C (48°F) | 9°C (48°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) | 7°C (45°F) |
| Perceived temperature | 0°C (33°F) | 4°C (39°F) | 4°C (39°F) | 3°C (38°F) | 4°C (38°F) | 3°C (38°F) | 3°C (37°F) | 4°C (40°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 89% | 84% | 80% | 74% | 75% | 74% | 74% | 74% |
| Barometric pressure | 988 hPa | 991 hPa | 1000 hPa | 1007 hPa | 1012 hPa | 1015 hPa | 1018 hPa | 1020 hPa |
| Cloud cover | 92% | 100% | 100% | 15% | 93% | 9% | 8% | 3% |
| Heat index | 7°C (45°F) | 9°C (48°F) | 9°C (48°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) | 7°C (45°F) |
| Dew point | 5°C (42°F) | 6°C (43°F) | 6°C (42°F) | 4°C (38°F) | 4°C (39°F) | 3°C (38°F) | 2°C (36°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 71km/h (44mph) | 55km/h (34mph) | 49km/h (30mph) | 39km/h (24mph) | 35km/h (22mph) | 28km/h (17mph) | 22km/h (13mph) | 15km/h (10mph) |
| Gusts | 88km/h (55mph) | 56km/h (35mph) | 54km/h (34mph) | 54km/h (33mph) | 50km/h (31mph) | 46km/h (28mph) | 38km/h (24mph) | 24km/h (15mph) |
| Direction | 195° SSW | 232° SW | 261° W | 267° W | 271° W | 270° W | 252° WSW | 238° WSW |
| Wind chill | 0°C (33°F) | 4°C (39°F) | 4°C (39°F) | 3°C (38°F) | 4°C (38°F) | 3°C (38°F) | 3°C (37°F) | 4°C (40°F) |
| Waves | ||||||||
| Height | 3.1m (10.1ft) | 3.1m (10.3ft) | 2.5m (8.1ft) | 1.9m (6.2ft) | 1.9m (6.4ft) | 1.9m (6.3ft) | 1.9m (6.2ft) | 1.7m (5.7ft) |
| Direction | 150° SSE | 149° SSE | 149° SSE | 148° SSE | 150° SSE | 148° SSE | 132° SE | 135° SE |
| Period | 8.8 sec. | 8.6 sec. | 8.5 sec. | 6.7 sec. | 5.9 sec. | 5.7 sec. | 5.6 sec. | 6.7 sec. |
| Significant height | 2.5m (8.2ft) | 2.6m (8.5ft) | 1.4m (4.6ft) | 1.2m (3.9ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.4m (4.6ft) | 0.6m (2ft) |
| 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 Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 08:37 and will set at 16:07 on the beach(es) of Dalkey Island. The outside temperature will be a high of 49°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 16.2mph km/h (with gusts up to 25.5mph). Wave height will be up to 4.9ft 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 (45°F) | 7°C (45°F) | 8°C (46°F) | 9°C (47°F) | 8°C (46°F) | 8°C (47°F) |
| Perceived temperature | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 5°C (41°F) | 4°C (40°F) | 5°C (41°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 76% | 72% | 74% | 80% | 72% | 76% | 78% | 82% |
| Barometric pressure | 1020 hPa | 1020 hPa | 1020 hPa | 1020 hPa | 1020 hPa | 1019 hPa | 1019 hPa | 1019 hPa |
| Cloud cover | 3% | 4% | 7% | 11% | 4% | 88% | 14% | 72% |
| Heat index | 7°C (44°F) | 7°C (44°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 9°C (47°F) | 8°C (46°F) | 8°C (47°F) |
| Dew point | 3°C (37°F) | 2°C (36°F) | 3°C (37°F) | 4°C (39°F) | 3°C (37°F) | 5°C (40°F) | 4°C (40°F) | 6°C (42°F) |
| Wind | ||||||||
| Speed | 16km/h (10mph) | 17km/h (10mph) | 19km/h (12mph) | 22km/h (13mph) | 24km/h (15mph) | 26km/h (16mph) | 26km/h (16mph) | 25km/h (16mph) |
| Gusts | 26km/h (16mph) | 26km/h (16mph) | 30km/h (18mph) | 34km/h (21mph) | 41km/h (25mph) | 41km/h (25mph) | 33km/h (20mph) | 40km/h (25mph) |
| Direction | 222° SW | 209° SSW | 204° SSW | 197° SSW | 193° SSW | 191° S | 194° SSW | 191° S |
| Wind chill | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 5°C (41°F) | 4°C (40°F) | 5°C (41°F) |
| Waves | ||||||||
| Height | 1.5m (4.9ft) | 1.4m (4.6ft) | 1.2m (4.1ft) | 1.1m (3.6ft) | 1.0m (3.1ft) | 0.8m (2.7ft) | 0.7m (2.4ft) | 0.6m (2.0ft) |
| Direction | 129° SE | 113° ESE | 328° NNW | 322° NW | 323° NW | 315° NW | 312° NW | 28° NNE |
| Period | 7.0 sec. | 6.5 sec. | 10.0 sec. | 9.7 sec. | 9.2 sec. | 8.9 sec. | 4.6 sec. | 4.6 sec. |
| Significant height | 1.7m (5.6ft) | 1.7m (5.6ft) | 1.5m (4.9ft) | 1.4m (4.6ft) | 1.2m (3.9ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 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) |