Sea weather in Keflavík in Iceland All the beach weather in Keflavík
All the essential weather information for enjoying the beach in Keflavík in Iceland, 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 Keflavík over the next 7 days?
Discover the best moment to go to the beach in Keflavík in Iceland this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Keflavík. 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 | 38°F to 43°F | 8.7mph | discouraged | all the sea weather |
| Monday 15 December 2025 | 36°F to 40°F | 18.6mph | not recommended | all the sea weather |
| Tuesday 16 December 2025 | 34°F to 38°F | 37.9mph | not recommended | all the sea weather |
| Wednesday 17 December 2025 | 40°F to 45°F | 24.2mph | not recommended | all the sea weather |
| Thursday 18 December 2025 | 41°F to 45°F | 37.3mph | not recommended | all the sea weather |
| Friday 19 December 2025 | 40°F to 45°F | 20.5mph | not recommended | all the sea weather |
| Saturday 20 December 2025 | 38°F to 45°F | 10.6mph | not recommended | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Keflavík
Sea weather on Sunday 14 December 2025
On Sunday 14 December 2025, the sun will rise at 11:15 and will set at 15:34 on the beach(es) of Keflavík. The outside temperature will be a high of 43°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 19.9mph km/h (with gusts up to 26.1mph). Wave height will be up to 12.1ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | |  | |  |  | | |
| Outside temperature | 5°C (41°F) | 5°C (41°F) | 4°C (40°F) | 4°C (39°F) | 6°C (43°F) | 3°C (37°F) | 4°C (39°F) | 5°C (41°F) |
| Perceived temperature | 1°C (34°F) | 1°C (34°F) | -1°C (30°F) | -1°C (30°F) | 2°C (36°F) | 1°C (34°F) | 3°C (37°F) | 2°C (35°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 74% | 74% | 83% | 87% | 63% | 55% | 59% | 64% |
| Barometric pressure | 971 hPa | 970 hPa | 970 hPa | 973 hPa | 974 hPa | 973 hPa | 973 hPa | 972 hPa |
| Cloud cover | 100% | 47% | 100% | 60% | 72% | 2% | 12% | 47% |
| Heat index | 5°C (41°F) | 5°C (41°F) | 4°C (40°F) | 4°C (39°F) | 6°C (43°F) | 3°C (37°F) | 4°C (39°F) | 5°C (41°F) |
| Dew point | 0°C (33°F) | 1°C (33°F) | 2°C (35°F) | 2°C (36°F) | -1°C (31°F) | -5°C (23°F) | -3°C (26°F) | -1°C (30°F) |
| Wind | ||||||||
| Speed | 18km/h (11mph) | 17km/h (11mph) | 30km/h (18mph) | 32km/h (20mph) | 20km/h (13mph) | 6km/h (4mph) | 6km/h (4mph) | 14km/h (9mph) |
| Gusts | 24km/h (15mph) | 23km/h (14mph) | 38km/h (23mph) | 42km/h (26mph) | 29km/h (18mph) | 12km/h (8mph) | 10km/h (6mph) | 19km/h (12mph) |
| Direction | 41° NE | 117° ESE | 85° E | 284° WNW | 225° SW | 214° SSW | 98° E | 23° NNE |
| Wind chill | 1°C (34°F) | 1°C (34°F) | -1°C (30°F) | -1°C (30°F) | 2°C (36°F) | 1°C (34°F) | 3°C (37°F) | 2°C (35°F) |
| Waves | ||||||||
| Height | 1.8m (5.8ft) | 3.3m (10.7ft) | 3.7m (12.2ft) | 3.7m (12.0ft) | 3.5m (11.4ft) | 3.3m (10.9ft) | 3.2m (10.4ft) | 3.1m (10.2ft) |
| Direction | 210° SSW | 216° SW | 212° SSW | 213° SSW | 211° SSW | 217° SW | 218° SW | 218° SW |
| Period | 11.1 sec. | 8.7 sec. | 10.9 sec. | 11.2 sec. | 12.9 sec. | 12.4 sec. | 12.3 sec. | 12.5 sec. |
| Significant height | 0.8m (2.6ft) | 1.1m (3.6ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.6m (2ft) | 0.6m (2ft) |
| Sea water temperature | ||||||||
| Water temperature | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) |
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 11:17 and will set at 15:34 on the beach(es) of Keflavík. The outside temperature will be a high of 40°F t and a low of 36°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 22.4mph km/h (with gusts up to 28.6mph). Wave height will be up to 14.8ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | |  |  | |
| Outside temperature | 4°C (39°F) | 4°C (38°F) | 3°C (37°F) | 3°C (37°F) | 2°C (36°F) | 2°C (35°F) | 2°C (35°F) | 3°C (37°F) |
| Perceived temperature | -0°C (32°F) | -2°C (29°F) | -2°C (28°F) | -2°C (28°F) | -4°C (25°F) | -5°C (24°F) | -4°C (25°F) | -3°C (27°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 78% | 81% | 80% | 78% | 75% | 74% | 70% | 68% |
| Barometric pressure | 973 hPa | 972 hPa | 973 hPa | 974 hPa | 975 hPa | 977 hPa | 979 hPa | 982 hPa |
| Cloud cover | 11% | 6% | 5% | 16% | 50% | 81% | 100% | 100% |
| Heat index | 4°C (39°F) | 4°C (38°F) | 3°C (37°F) | 3°C (37°F) | 2°C (36°F) | 2°C (35°F) | 2°C (35°F) | 3°C (37°F) |
| Dew point | 0°C (33°F) | 1°C (33°F) | -0°C (32°F) | -1°C (31°F) | -2°C (29°F) | -2°C (28°F) | -3°C (27°F) | -3°C (27°F) |
| Wind | ||||||||
| Speed | 19km/h (12mph) | 28km/h (17mph) | 27km/h (17mph) | 26km/h (16mph) | 33km/h (21mph) | 36km/h (23mph) | 32km/h (20mph) | 30km/h (18mph) |
| Gusts | 25km/h (16mph) | 36km/h (22mph) | 33km/h (21mph) | 33km/h (20mph) | 43km/h (27mph) | 46km/h (29mph) | 42km/h (26mph) | 37km/h (23mph) |
| Direction | 33° NNE | 21° NNE | 28° NNE | 21° NNE | 20° NNE | 7° N | 357° N | 355° N |
| Wind chill | -0°C (32°F) | -2°C (29°F) | -2°C (28°F) | -2°C (28°F) | -4°C (25°F) | -5°C (24°F) | -4°C (25°F) | -3°C (27°F) |
| Waves | ||||||||
| Height | 3.3m (10.9ft) | 4.0m (13.2ft) | 4.5m (14.8ft) | 4.3m (14.1ft) | 4.0m (13.3ft) | 3.8m (12.4ft) | 3.5m (11.4ft) | 3.1m (10.3ft) |
| Direction | 221° SW | 220° SW | 220° SW | 220° SW | 221° SW | 223° SW | 224° SW | 225° SW |
| Period | 14.8 sec. | 16.9 sec. | 15.9 sec. | 15.5 sec. | 15.0 sec. | 14.7 sec. | 14.4 sec. | 14.2 sec. |
| Significant height | 0.5m (1.6ft) | 0.6m (2ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.9m (3ft) | 0.9m (3ft) | 0.9m (3ft) | 0.7m (2.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 11:18 and will set at 15:34 on the beach(es) of Keflavík. The outside temperature will be a high of 38°F t and a low of 34°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 37.9mph km/h (with gusts up to 49.1mph). Wave height will be up to 9.5ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | |  |
| Outside temperature | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 1°C (34°F) | 2°C (35°F) | 1°C (35°F) | 3°C (37°F) |
| Perceived temperature | -3°C (27°F) | -2°C (28°F) | -1°C (30°F) | -1°C (29°F) | -2°C (28°F) | -4°C (24°F) | -6°C (22°F) | -5°C (24°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 67% | 67% | 67% | 70% | 71% | 76% | 77% | 81% |
| Barometric pressure | 985 hPa | 988 hPa | 991 hPa | 993 hPa | 994 hPa | 993 hPa | 991 hPa | 987 hPa |
| Cloud cover | 100% | 100% | 45% | 6% | 4% | 16% | 43% | 100% |
| Heat index | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 1°C (34°F) | 2°C (35°F) | 1°C (35°F) | 3°C (37°F) |
| Dew point | -3°C (27°F) | -3°C (27°F) | -3°C (27°F) | -2°C (28°F) | -4°C (26°F) | -2°C (28°F) | -2°C (28°F) | 0°C (32°F) |
| Wind | ||||||||
| Speed | 29km/h (18mph) | 27km/h (17mph) | 18km/h (11mph) | 16km/h (10mph) | 10km/h (6mph) | 31km/h (19mph) | 43km/h (27mph) | 61km/h (38mph) |
| Gusts | 36km/h (22mph) | 35km/h (21mph) | 24km/h (15mph) | 22km/h (13mph) | 17km/h (11mph) | 46km/h (29mph) | 48km/h (30mph) | 79km/h (49mph) |
| Direction | 3° N | 1° N | 6° N | 33° NNE | 131° SE | 131° SE | 113° ESE | 111° ESE |
| Wind chill | -3°C (27°F) | -2°C (28°F) | -1°C (30°F) | -1°C (29°F) | -2°C (28°F) | -4°C (24°F) | -6°C (22°F) | -5°C (24°F) |
| Waves | ||||||||
| Height | 2.9m (9.4ft) | 2.8m (9.2ft) | 2.9m (9.4ft) | 2.7m (8.9ft) | 2.5m (8.1ft) | 2.3m (7.6ft) | 2.2m (7.2ft) | 2.1m (6.9ft) |
| Direction | 225° SW | 225° SW | 223° SW | 222° SW | 223° SW | 226° SW | 227° SW | 228° SW |
| Period | 13.9 sec. | 13.5 sec. | 13.2 sec. | 12.7 sec. | 12.4 sec. | 12.4 sec. | 12.2 sec. | 11.9 sec. |
| Significant height | 0.6m (2ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.2m (0.7ft) | 0.1m (0.3ft) | 0.4m (1.3ft) | 0.8m (2.6ft) | 1.7m (5.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) | 7°C (44°F) |
Sea weather on Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 11:19 and will set at 15:33 on the beach(es) of Keflavík. The outside temperature will be a high of 45°F t and a low of 40°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 46.6mph km/h (with gusts up to 52.2mph). Wave height will be up to 26.9ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  |  | | | |  | | |
| Outside temperature | 4°C (39°F) | 5°C (42°F) | 7°C (44°F) | 6°C (43°F) | 6°C (42°F) | 5°C (41°F) | 5°C (42°F) | 6°C (43°F) |
| Perceived temperature | -4°C (25°F) | -2°C (28°F) | 1°C (34°F) | -0°C (32°F) | -1°C (31°F) | -2°C (29°F) | -0°C (31°F) | 1°C (33°F) |
| Precipitation | 0in | 0.1in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 83% | 93% | 82% | 79% | 81% | 89% | 81% | 81% |
| Barometric pressure | 981 hPa | 974 hPa | 970 hPa | 969 hPa | 968 hPa | 966 hPa | 965 hPa | 965 hPa |
| Cloud cover | 100% | 100% | 58% | 68% | 79% | 100% | 89% | 88% |
| Heat index | 4°C (39°F) | 5°C (42°F) | 7°C (44°F) | 6°C (43°F) | 6°C (42°F) | 5°C (41°F) | 5°C (42°F) | 6°C (43°F) |
| Dew point | 1°C (34°F) | 4°C (40°F) | 4°C (39°F) | 3°C (37°F) | 3°C (37°F) | 3°C (38°F) | 2°C (36°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 69km/h (43mph) | 75km/h (46mph) | 45km/h (28mph) | 57km/h (35mph) | 57km/h (36mph) | 54km/h (34mph) | 45km/h (28mph) | 39km/h (24mph) |
| Gusts | 84km/h (52mph) | 81km/h (50mph) | 61km/h (38mph) | 58km/h (36mph) | 60km/h (38mph) | 56km/h (35mph) | 46km/h (28mph) | 53km/h (33mph) |
| Direction | 103° ESE | 118° ESE | 161° SSE | 139° SE | 131° SE | 138° SE | 109° ESE | 162° SSE |
| Wind chill | -4°C (25°F) | -2°C (28°F) | 1°C (34°F) | -0°C (32°F) | -1°C (31°F) | -2°C (29°F) | -0°C (31°F) | 1°C (33°F) |
| Waves | ||||||||
| Height | 2.1m (7.0ft) | 2.5m (8.2ft) | 3.0m (10.0ft) | 2.8m (9.1ft) | 2.7m (9.0ft) | 3.4m (11.3ft) | 6.8m (22.3ft) | 8.2m (26.9ft) |
| Direction | 228° SW | 176° S | 171° S | 188° S | 192° SSW | 193° SSW | 207° SSW | 210° SSW |
| Period | 11.9 sec. | 9.6 sec. | 11.9 sec. | 11.0 sec. | 10.9 sec. | 11.3 sec. | 19.6 sec. | 19.6 sec. |
| Significant height | 1.8m (5.9ft) | 2.8m (9.2ft) | 1.9m (6.2ft) | 0.4m (1.3ft) | 1.6m (5.2ft) | 1.6m (5.2ft) | 0.8m (2.6ft) | 1.4m (4.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 11:20 and will set at 15:33 on the beach(es) of Keflavík. 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! Be careful, the sea will be generally rough with a wind speed of up to 37.3mph km/h (with gusts up to 44.1mph). Wave height will be up to 25.3ft 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) | 6°C (43°F) | 6°C (42°F) | 6°C (42°F) | 5°C (42°F) | 5°C (42°F) | 5°C (42°F) | 6°C (42°F) |
| Perceived temperature | 1°C (34°F) | 1°C (34°F) | -1°C (31°F) | -1°C (31°F) | -1°C (30°F) | -1°C (30°F) | -1°C (30°F) | -1°C (30°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 74% | 75% | 82% | 73% | 73% | 72% | 75% | 78% |
| Barometric pressure | 967 hPa | 970 hPa | 974 hPa | 978 hPa | 981 hPa | 982 hPa | 983 hPa | 982 hPa |
| Cloud cover | 57% | 96% | 96% | 71% | 56% | 71% | 74% | 100% |
| Heat index | 7°C (44°F) | 6°C (43°F) | 6°C (42°F) | 6°C (42°F) | 5°C (42°F) | 5°C (42°F) | 5°C (42°F) | 6°C (42°F) |
| Dew point | 2°C (36°F) | 2°C (36°F) | 3°C (37°F) | 1°C (34°F) | 1°C (34°F) | 1°C (33°F) | 1°C (34°F) | 2°C (36°F) |
| Wind | ||||||||
| Speed | 40km/h (25mph) | 35km/h (22mph) | 53km/h (33mph) | 54km/h (34mph) | 56km/h (35mph) | 52km/h (32mph) | 51km/h (32mph) | 60km/h (37mph) |
| Gusts | 56km/h (35mph) | 49km/h (30mph) | 58km/h (36mph) | 71km/h (44mph) | 63km/h (39mph) | 57km/h (35mph) | 55km/h (34mph) | 63km/h (39mph) |
| Direction | 173° S | 188° S | 187° S | 172° S | 163° SSE | 151° SSE | 137° SE | 122° ESE |
| Wind chill | 1°C (34°F) | 1°C (34°F) | -1°C (31°F) | -1°C (31°F) | -1°C (30°F) | -1°C (30°F) | -1°C (30°F) | -1°C (30°F) |
| Waves | ||||||||
| Height | 7.7m (25.4ft) | 7.6m (24.9ft) | 7.2m (23.7ft) | 6.7m (21.9ft) | 5.8m (19.1ft) | 4.9m (15.9ft) | 4.2m (13.7ft) | 3.8m (12.4ft) |
| Direction | 214° SSW | 214° SW | 214° SSW | 215° SW | 214° SW | 215° SW | 211° SSW | 214° SSW |
| Period | 19.3 sec. | 19.2 sec. | 18.6 sec. | 17.8 sec. | 16.8 sec. | 15.6 sec. | 14.4 sec. | 14.4 sec. |
| Significant height | 1.7m (5.6ft) | 0.8m (2.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 0.6m (2ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.6m (2ft) |
| Sea water temperature | ||||||||
| Water temperature | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 11:21 and will set at 15:34 on the beach(es) of Keflavík. The outside temperature will be a high of 45°F t and a low of 40°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 36.7mph km/h (with gusts up to 47.2mph). Wave height will be up to 10.5ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | | | | | | |
| Outside temperature | 4°C (39°F) | 6°C (43°F) | 6°C (44°F) | 7°C (44°F) | 6°C (43°F) | 7°C (44°F) | 6°C (43°F) | 5°C (42°F) |
| Perceived temperature | -3°C (26°F) | 1°C (33°F) | 2°C (36°F) | 2°C (36°F) | 2°C (36°F) | 2°C (36°F) | 2°C (35°F) | 0°C (32°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 96% | 84% | 85% | 81% | 83% | 79% | 77% | 83% |
| Barometric pressure | 982 hPa | 982 hPa | 982 hPa | 983 hPa | 986 hPa | 987 hPa | 990 hPa | 991 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 61% | 100% |
| Heat index | 4°C (39°F) | 6°C (43°F) | 6°C (44°F) | 7°C (44°F) | 6°C (43°F) | 7°C (44°F) | 6°C (43°F) | 5°C (42°F) |
| Dew point | 3°C (38°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 4°C (38°F) | 3°C (38°F) | 3°C (37°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 59km/h (36mph) | 48km/h (30mph) | 27km/h (17mph) | 30km/h (18mph) | 26km/h (16mph) | 27km/h (17mph) | 28km/h (18mph) | 33km/h (20mph) |
| Gusts | 76km/h (47mph) | 50km/h (31mph) | 38km/h (24mph) | 44km/h (28mph) | 31km/h (19mph) | 42km/h (26mph) | 45km/h (28mph) | 47km/h (29mph) |
| Direction | 113° ESE | 124° ESE | 153° SSE | 147° SSE | 130° SE | 174° S | 172° S | 109° ESE |
| Wind chill | -3°C (26°F) | 1°C (33°F) | 2°C (36°F) | 2°C (36°F) | 2°C (36°F) | 2°C (36°F) | 2°C (35°F) | 0°C (32°F) |
| Waves | ||||||||
| Height | 3.2m (10.5ft) | 2.8m (9.3ft) | 2.7m (9.0ft) | 2.7m (8.8ft) | 2.5m (8.1ft) | 2.3m (7.4ft) | 2.1m (6.9ft) | 1.9m (6.2ft) |
| Direction | 215° SW | 212° SSW | 220° SW | 226° SW | 227° SW | 227° SW | 225° SW | 226° SW |
| Period | 13.8 sec. | 13.1 sec. | 12.7 sec. | 12.6 sec. | 13.1 sec. | 12.8 sec. | 12.2 sec. | 12.0 sec. |
| Significant height | 1.0m (3.3ft) | 1.2m (3.9ft) | 1.5m (4.9ft) | 1.5m (4.9ft) | 1.4m (4.6ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.1m (3.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) |
Sea weather on Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 11:22 and will set at 15:34 on the beach(es) of Keflavík. The outside temperature will be a high of 45°F t and a low of 38°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 41mph). Wave height will be up to 5.6ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | |  | | | |
| Outside temperature | 5°C (41°F) | 5°C (40°F) | 3°C (38°F) | 5°C (41°F) | 6°C (42°F) | 6°C (42°F) | 6°C (43°F) | 7°C (44°F) |
| Perceived temperature | -1°C (30°F) | -2°C (29°F) | -3°C (26°F) | -1°C (30°F) | -1°C (31°F) | 1°C (33°F) | 1°C (35°F) | 4°C (38°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 84% | 82% | 96% | 87% | 85% | 85% | 84% | 85% |
| Barometric pressure | 991 hPa | 991 hPa | 990 hPa | 989 hPa | 989 hPa | 990 hPa | 991 hPa | 994 hPa |
| Cloud cover | 94% | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Heat index | 5°C (41°F) | 5°C (40°F) | 3°C (38°F) | 5°C (41°F) | 6°C (42°F) | 6°C (42°F) | 6°C (43°F) | 7°C (44°F) |
| Dew point | 2°C (36°F) | 2°C (35°F) | 2°C (36°F) | 3°C (38°F) | 3°C (38°F) | 3°C (38°F) | 4°C (39°F) | 4°C (40°F) |
| Wind | ||||||||
| Speed | 41km/h (25mph) | 45km/h (28mph) | 42km/h (26mph) | 48km/h (30mph) | 48km/h (30mph) | 37km/h (23mph) | 35km/h (21mph) | 17km/h (10mph) |
| Gusts | 55km/h (34mph) | 59km/h (37mph) | 55km/h (34mph) | 66km/h (41mph) | 53km/h (33mph) | 42km/h (26mph) | 39km/h (24mph) | 25km/h (16mph) |
| Direction | 95° E | 86° E | 74° ENE | 89° E | 92° E | 98° E | 100° E | 116° ESE |
| Wind chill | -1°C (30°F) | -2°C (29°F) | -3°C (26°F) | -1°C (30°F) | -1°C (31°F) | 1°C (33°F) | 1°C (35°F) | 4°C (38°F) |
| Waves | ||||||||
| Height | 1.7m (5.5ft) | 1.4m (4.7ft) | 1.2m (4.1ft) | 1.2m (3.8ft) | 1.1m (3.8ft) | 1.2m (4.0ft) | 1.3m (4.4ft) | 1.4m (4.7ft) |
| Direction | 227° SW | 227° SW | 224° SW | 223° SW | 219° SW | 212° SSW | 212° SSW | 217° SW |
| Period | 11.9 sec. | 11.8 sec. | 11.4 sec. | 10.9 sec. | 10.8 sec. | 10.9 sec. | 11.0 sec. | 11.1 sec. |
| Significant height | 0.9m (3ft) | 0.5m (1.6ft) | 0.2m (0.7ft) | 0.1m (0.3ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.4m (1.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) | 5°C (40°F) |