Sea weather in Arniston in South Africa All the beach weather in Arniston
All the essential weather information for enjoying the beach in Arniston in South Africa, 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 Arniston over the next 7 days?
Discover the best moment to go to the beach in Arniston in South Africa this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Arniston. 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 | 59°F to 67°F | 4.4mph | recommended | all the sea weather |
| Monday 15 December 2025 | 63°F to 70°F | 3.1mph | recommended | all the sea weather |
| Tuesday 16 December 2025 | 61°F to 70°F | 36.7mph | not recommended | all the sea weather |
| Wednesday 17 December 2025 | 63°F to 68°F | 18.6mph | not recommended | all the sea weather |
| Thursday 18 December 2025 | 65°F to 68°F | 11.2mph | discouraged | all the sea weather |
| Friday 19 December 2025 | 65°F to 70°F | 11.2mph | recommended | all the sea weather |
| Saturday 20 December 2025 | 63°F to 70°F | 20.5mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Arniston
Sea weather on Sunday 14 December 2025
On Sunday 14 December 2025, the sun will rise at 05:19 and will set at 19:48 on the beach(es) of Arniston. The outside temperature will be a high of 67°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! The sea will be generally calm, with a wind speed of up to 10.6mph km/h (with gusts up to 16.2mph). 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 | 18°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (62°F) | 16°C (60°F) | 15°C (59°F) | 19°C (67°F) |
| Perceived temperature | 18°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (62°F) | 16°C (60°F) | 15°C (59°F) | 19°C (67°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 53% | 56% | 60% | 59% | 60% | 62% | 66% | 68% |
| Barometric pressure | 1022 hPa | 1020 hPa | 1019 hPa | 1019 hPa | 1018 hPa | 1016 hPa | 1015 hPa | 1016 hPa |
| Cloud cover | 91% | 14% | 5% | 6% | 3% | 0% | 2% | 72% |
| Heat index | 18°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (62°F) | 16°C (60°F) | 15°C (59°F) | 19°C (67°F) |
| Dew point | 9°C (47°F) | 9°C (48°F) | 10°C (50°F) | 9°C (49°F) | 9°C (48°F) | 8°C (47°F) | 9°C (48°F) | 13°C (56°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 14km/h (9mph) | 15km/h (9mph) | 12km/h (7mph) | 13km/h (8mph) | 17km/h (11mph) | 13km/h (8mph) | 7km/h (4mph) |
| Gusts | 17km/h (10mph) | 19km/h (12mph) | 20km/h (12mph) | 15km/h (10mph) | 22km/h (14mph) | 23km/h (14mph) | 26km/h (16mph) | 10km/h (6mph) |
| Direction | 255° WSW | 312° NW | 317° NW | 292° WNW | 244° WSW | 229° SW | 219° SW | 236° SW |
| Wind chill | 18°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (62°F) | 16°C (60°F) | 15°C (59°F) | 19°C (67°F) |
| Waves | ||||||||
| Height | 3.2m (10.4ft) | 3.0m (9.9ft) | 2.9m (9.4ft) | 2.7m (8.9ft) | 2.6m (8.4ft) | 2.5m (8.1ft) | 2.6m (8.4ft) | 2.7m (8.9ft) |
| Direction | 232° SW | 232° SW | 231° SW | 231° SW | 231° SW | 230° SW | 227° SW | 224° SW |
| Period | 12.4 sec. | 12.4 sec. | 12.3 sec. | 12.0 sec. | 11.8 sec. | 11.7 sec. | 11.6 sec. | 11.6 sec. |
| Significant height | 0.3m (1ft) | 0.3m (1ft) | 0.4m (1.3ft) | 0.3m (1ft) | 0.3m (1ft) | 0.4m (1.3ft) | 0.3m (1ft) | 0.1m (0.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) |
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 05:19 and will set at 19:49 on the beach(es) of Arniston. The outside temperature will be a high of 70°F t and a low of 63°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 9.3mph km/h (with gusts up to 17.4mph). 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 | 19°C (66°F) | 19°C (66°F) | 19°C (65°F) | 19°C (66°F) | 17°C (63°F) | 17°C (63°F) | 20°C (68°F) | 21°C (69°F) |
| Perceived temperature | 19°C (66°F) | 19°C (66°F) | 19°C (65°F) | 19°C (66°F) | 17°C (63°F) | 17°C (63°F) | 20°C (68°F) | 21°C (69°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 70% | 70% | 70% | 69% | 68% | 72% | 72% | 73% |
| Barometric pressure | 1015 hPa | 1013 hPa | 1013 hPa | 1012 hPa | 1012 hPa | 1010 hPa | 1009 hPa | 1010 hPa |
| Cloud cover | 22% | 18% | 3% | 0% | 0% | 0% | 25% | 74% |
| Heat index | 19°C (66°F) | 19°C (66°F) | 19°C (65°F) | 19°C (66°F) | 17°C (63°F) | 17°C (63°F) | 20°C (68°F) | 21°C (69°F) |
| Dew point | 14°C (56°F) | 13°C (56°F) | 13°C (55°F) | 13°C (55°F) | 11°C (52°F) | 12°C (54°F) | 15°C (59°F) | 16°C (60°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 4km/h (3mph) | 5km/h (3mph) | 4km/h (3mph) | 3km/h (2mph) | 13km/h (8mph) | 15km/h (10mph) | 5km/h (3mph) |
| Gusts | 14km/h (9mph) | 6km/h (4mph) | 7km/h (4mph) | 6km/h (4mph) | 6km/h (4mph) | 28km/h (17mph) | 24km/h (15mph) | 8km/h (5mph) |
| Direction | 350° N | 308° NW | 355° N | 340° NNW | 247° WSW | 185° S | 188° S | 135° SE |
| Wind chill | 19°C (66°F) | 19°C (66°F) | 19°C (65°F) | 19°C (66°F) | 17°C (63°F) | 17°C (63°F) | 20°C (68°F) | 21°C (69°F) |
| Waves | ||||||||
| Height | 2.8m (9.1ft) | 2.8m (9.2ft) | 2.9m (9.6ft) | 3.0m (9.8ft) | 3.0m (9.9ft) | 3.0m (9.9ft) | 3.0m (9.8ft) | 2.9m (9.5ft) |
| Direction | 223° SW | 224° SW | 224° SW | 225° SW | 226° SW | 227° SW | 228° SW | 230° SW |
| Period | 11.5 sec. | 11.5 sec. | 11.8 sec. | 12.0 sec. | 12.2 sec. | 12.3 sec. | 12.5 sec. | 12.6 sec. |
| Significant height | 0.2m (0.7ft) | 0.1m (0.3ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.1m (0.3ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.1m (0.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 05:19 and will set at 19:50 on the beach(es) of Arniston. The outside temperature will be a high of 70°F t and a low of 61°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 36.7mph km/h (with gusts up to 39.2mph). Wave height will be up to 11.8ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 20°C (69°F) | 20°C (67°F) | 20°C (67°F) | 20°C (68°F) | 20°C (67°F) | 18°C (64°F) | 17°C (62°F) | 21°C (69°F) |
| Perceived temperature | 20°C (69°F) | 20°C (67°F) | 20°C (67°F) | 20°C (68°F) | 20°C (67°F) | 18°C (64°F) | 17°C (62°F) | 21°C (69°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 76% | 79% | 70% | 70% | 75% | 79% | 77% | 72% |
| Barometric pressure | 1010 hPa | 1007 hPa | 1006 hPa | 1006 hPa | 1006 hPa | 1004 hPa | 1002 hPa | 1004 hPa |
| Cloud cover | 55% | 21% | 4% | 15% | 17% | 0% | 0% | 7% |
| Heat index | 20°C (69°F) | 20°C (67°F) | 20°C (67°F) | 20°C (68°F) | 20°C (67°F) | 18°C (64°F) | 17°C (62°F) | 21°C (69°F) |
| Dew point | 16°C (61°F) | 16°C (61°F) | 14°C (57°F) | 14°C (58°F) | 15°C (59°F) | 14°C (57°F) | 13°C (55°F) | 16°C (60°F) |
| Wind | ||||||||
| Speed | 12km/h (7mph) | 15km/h (9mph) | 9km/h (5mph) | 11km/h (7mph) | 27km/h (17mph) | 40km/h (25mph) | 58km/h (36mph) | 59km/h (37mph) |
| Gusts | 16km/h (10mph) | 21km/h (13mph) | 12km/h (7mph) | 15km/h (9mph) | 39km/h (24mph) | 41km/h (26mph) | 63km/h (39mph) | 62km/h (39mph) |
| Direction | 56° ENE | 58° ENE | 64° ENE | 18° NNE | 267° W | 252° WSW | 265° W | 284° WNW |
| Wind chill | 20°C (69°F) | 20°C (67°F) | 20°C (67°F) | 20°C (68°F) | 20°C (67°F) | 18°C (64°F) | 17°C (62°F) | 21°C (69°F) |
| Waves | ||||||||
| Height | 2.8m (9.1ft) | 2.6m (8.7ft) | 2.5m (8.3ft) | 2.4m (7.9ft) | 2.5m (8.2ft) | 3.1m (10.2ft) | 3.6m (11.9ft) | 3.6m (11.9ft) |
| Direction | 231° SW | 232° SW | 233° SW | 235° SW | 236° WSW | 238° WSW | 252° WSW | 259° WSW |
| Period | 12.6 sec. | 12.6 sec. | 12.5 sec. | 12.4 sec. | 9.1 sec. | 9.0 sec. | 8.9 sec. | 8.9 sec. |
| Significant height | 0.2m (0.7ft) | 0.1m (0.3ft) | 0.2m (0.7ft) | 0.6m (2ft) | 1.4m (4.6ft) | 2.3m (7.5ft) | 2.7m (8.9ft) | 2.1m (6.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) |
Sea weather on Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 05:20 and will set at 19:50 on the beach(es) of Arniston. The outside temperature will be a high of 68°F t and a low of 63°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 34.8mph km/h (with gusts up to 44.1mph). Wave height will be up to 13.1ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | |  | | | | | |
| Outside temperature | 20°C (68°F) | 19°C (66°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (63°F) | 18°C (64°F) | 18°C (64°F) |
| Perceived temperature | 20°C (68°F) | 19°C (66°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (63°F) | 18°C (64°F) | 18°C (64°F) |
| Precipitation | 0.1in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 83% | 68% | 65% | 63% | 62% | 58% | 52% | 55% |
| Barometric pressure | 1005 hPa | 1006 hPa | 1010 hPa | 1012 hPa | 1014 hPa | 1015 hPa | 1016 hPa | 1019 hPa |
| Cloud cover | 100% | 99% | 77% | 100% | 100% | 90% | 90% | 77% |
| Heat index | 20°C (68°F) | 19°C (66°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (63°F) | 18°C (64°F) | 18°C (64°F) |
| Dew point | 17°C (63°F) | 13°C (55°F) | 11°C (52°F) | 10°C (51°F) | 10°C (50°F) | 9°C (48°F) | 8°C (46°F) | 8°C (47°F) |
| Wind | ||||||||
| Speed | 55km/h (34mph) | 54km/h (33mph) | 56km/h (35mph) | 47km/h (29mph) | 48km/h (30mph) | 40km/h (25mph) | 35km/h (22mph) | 30km/h (18mph) |
| Gusts | 71km/h (44mph) | 69km/h (43mph) | 69km/h (43mph) | 58km/h (36mph) | 62km/h (38mph) | 53km/h (33mph) | 48km/h (30mph) | 38km/h (24mph) |
| Direction | 285° WNW | 244° WSW | 239° WSW | 247° WSW | 245° WSW | 239° WSW | 229° SW | 237° WSW |
| Wind chill | 20°C (68°F) | 19°C (66°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 17°C (63°F) | 18°C (64°F) | 18°C (64°F) |
| Waves | ||||||||
| Height | 3.8m (12.6ft) | 4.0m (13.1ft) | 4.0m (13.3ft) | 3.8m (12.4ft) | 3.8m (12.4ft) | 3.8m (12.5ft) | 3.4m (11.3ft) | 3.2m (10.4ft) |
| Direction | 249° WSW | 241° WSW | 237° WSW | 236° WSW | 238° WSW | 234° SW | 225° SW | 219° SW |
| Period | 8.9 sec. | 8.7 sec. | 8.6 sec. | 8.5 sec. | 8.4 sec. | 10.5 sec. | 10.2 sec. | 10.6 sec. |
| Significant height | 1.7m (5.6ft) | 1.8m (5.9ft) | 1.6m (5.2ft) | 1.6m (5.2ft) | 1.6m (5.2ft) | 1.4m (4.6ft) | 1.1m (3.6ft) | 0.9m (3ft) |
| Sea water temperature | ||||||||
| Water temperature | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 05:20 and will set at 19:51 on the beach(es) of Arniston. The outside temperature will be a high of 68°F t and a low of 65°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 24.9mph). 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 | 18°C (64°F) | 18°C (64°F) | 19°C (65°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (67°F) | 20°C (68°F) |
| Perceived temperature | 18°C (64°F) | 18°C (64°F) | 19°C (65°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (67°F) | 20°C (68°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 56% | 64% | 66% | 63% | 64% | 67% | 67% | 66% |
| Barometric pressure | 1019 hPa | 1018 hPa | 1019 hPa | 1020 hPa | 1021 hPa | 1021 hPa | 1021 hPa | 1022 hPa |
| Cloud cover | 85% | 72% | 100% | 71% | 55% | 54% | 47% | 43% |
| Heat index | 18°C (64°F) | 18°C (64°F) | 19°C (65°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (67°F) | 20°C (68°F) |
| Dew point | 9°C (48°F) | 11°C (51°F) | 12°C (53°F) | 12°C (53°F) | 12°C (54°F) | 13°C (55°F) | 13°C (56°F) | 13°C (56°F) |
| Wind | ||||||||
| Speed | 24km/h (15mph) | 28km/h (18mph) | 31km/h (19mph) | 24km/h (15mph) | 22km/h (14mph) | 23km/h (14mph) | 25km/h (15mph) | 18km/h (11mph) |
| Gusts | 32km/h (20mph) | 37km/h (23mph) | 40km/h (25mph) | 32km/h (20mph) | 31km/h (19mph) | 33km/h (21mph) | 36km/h (23mph) | 25km/h (16mph) |
| Direction | 253° WSW | 279° W | 278° W | 244° WSW | 238° WSW | 240° WSW | 227° SW | 219° SW |
| Wind chill | 18°C (64°F) | 18°C (64°F) | 19°C (65°F) | 19°C (66°F) | 19°C (66°F) | 19°C (66°F) | 19°C (67°F) | 20°C (68°F) |
| Waves | ||||||||
| Height | 3.0m (9.7ft) | 2.8m (9.3ft) | 2.8m (9.0ft) | 2.6m (8.6ft) | 2.5m (8.2ft) | 2.4m (7.9ft) | 2.3m (7.5ft) | 2.2m (7.2ft) |
| Direction | 215° SW | 202° SSW | 197° SSW | 193° SSW | 190° S | 186° S | 183° S | 180° S |
| Period | 10.3 sec. | 9.8 sec. | 9.8 sec. | 10.0 sec. | 10.2 sec. | 10.5 sec. | 10.6 sec. | 10.6 sec. |
| Significant height | 1.5m (4.9ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.9m (3ft) | 1.3m (4.3ft) | 1.1m (3.6ft) | 1.0m (3.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 05:20 and will set at 19:51 on the beach(es) of Arniston. The outside temperature will be a high of 70°F t and a low of 65°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 12.4mph km/h (with gusts up to 19.3mph). Wave height will be up to 7.2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | | | | | | |
| Outside temperature | 20°C (67°F) | 20°C (67°F) | 20°C (67°F) | 19°C (66°F) | 18°C (65°F) | 19°C (66°F) | 20°C (68°F) | 20°C (69°F) |
| Perceived temperature | 20°C (67°F) | 20°C (67°F) | 20°C (67°F) | 19°C (66°F) | 18°C (65°F) | 19°C (66°F) | 20°C (68°F) | 20°C (69°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 63% | 61% | 63% | 63% | 64% | 68% | 71% | 72% |
| Barometric pressure | 1023 hPa | 1021 hPa | 1021 hPa | 1021 hPa | 1021 hPa | 1020 hPa | 1020 hPa | 1021 hPa |
| Cloud cover | 33% | 18% | 10% | 3% | 2% | 5% | 13% | 24% |
| Heat index | 20°C (67°F) | 20°C (67°F) | 20°C (67°F) | 19°C (66°F) | 18°C (65°F) | 19°C (66°F) | 20°C (68°F) | 20°C (69°F) |
| Dew point | 13°C (55°F) | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 12°C (53°F) | 13°C (55°F) | 15°C (58°F) | 15°C (60°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 3km/h (2mph) | 2km/h (1mph) | 3km/h (2mph) | 7km/h (4mph) | 18km/h (11mph) | 20km/h (12mph) | 18km/h (11mph) |
| Gusts | 12km/h (7mph) | 4km/h (2mph) | 3km/h (2mph) | 4km/h (2mph) | 13km/h (8mph) | 31km/h (19mph) | 31km/h (19mph) | 26km/h (16mph) |
| Direction | 217° SW | 227° SW | 163° SSE | 50° NE | 150° SSE | 178° S | 173° S | 154° SSE |
| Wind chill | 20°C (67°F) | 20°C (67°F) | 20°C (67°F) | 19°C (66°F) | 18°C (65°F) | 19°C (66°F) | 20°C (68°F) | 20°C (69°F) |
| Waves | ||||||||
| Height | 2.2m (7.2ft) | 2.1m (6.9ft) | 2.1m (6.9ft) | 2.0m (6.6ft) | 2.0m (6.6ft) | 2.0m (6.6ft) | 2.0m (6.6ft) | 2.0m (6.6ft) |
| Direction | 178° S | 177° S | 176° S | 176° S | 187° S | 203° SSW | 184° S | 195° SSW |
| Period | 10.7 sec. | 10.6 sec. | 10.5 sec. | 10.3 sec. | 10.1 sec. | 10.0 sec. | 10.0 sec. | 10.6 sec. |
| Significant height | 1.1m (3.6ft) | 1.0m (3.3ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.0m (3.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) |
Sea weather on Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 05:21 and will set at 19:52 on the beach(es) of Arniston. The outside temperature will be a high of 70°F t and a low of 63°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 21.1mph km/h (with gusts up to 28.6mph). Wave height will be up to 7.2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | |  | | | | | |
| Outside temperature | 20°C (68°F) | 20°C (68°F) | 20°C (69°F) | 20°C (69°F) | 20°C (68°F) | 19°C (65°F) | 19°C (65°F) | 21°C (69°F) |
| Perceived temperature | 20°C (68°F) | 20°C (68°F) | 20°C (69°F) | 20°C (69°F) | 20°C (68°F) | 19°C (65°F) | 19°C (65°F) | 21°C (69°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 75% | 75% | 73% | 74% | 76% | 78% | 80% | 82% |
| Barometric pressure | 1021 hPa | 1020 hPa | 1020 hPa | 1020 hPa | 1018 hPa | 1016 hPa | 1015 hPa | 1015 hPa |
| Cloud cover | 45% | 63% | 71% | 48% | 8% | 2% | 1% | 7% |
| Heat index | 20°C (68°F) | 20°C (68°F) | 20°C (69°F) | 20°C (69°F) | 20°C (68°F) | 19°C (65°F) | 19°C (65°F) | 21°C (69°F) |
| Dew point | 16°C (60°F) | 16°C (60°F) | 15°C (60°F) | 16°C (60°F) | 16°C (60°F) | 15°C (58°F) | 15°C (59°F) | 18°C (64°F) |
| Wind | ||||||||
| Speed | 20km/h (12mph) | 22km/h (14mph) | 26km/h (16mph) | 28km/h (17mph) | 29km/h (18mph) | 32km/h (20mph) | 34km/h (21mph) | 33km/h (20mph) |
| Gusts | 28km/h (17mph) | 30km/h (19mph) | 36km/h (22mph) | 40km/h (25mph) | 40km/h (25mph) | 34km/h (21mph) | 39km/h (24mph) | 46km/h (29mph) |
| Direction | 129° SE | 108° ESE | 95° E | 93° E | 92° E | 98° E | 104° ESE | 103° ESE |
| Wind chill | 20°C (68°F) | 20°C (68°F) | 20°C (69°F) | 20°C (69°F) | 20°C (68°F) | 19°C (65°F) | 19°C (65°F) | 21°C (69°F) |
| Waves | ||||||||
| Height | 1.9m (6.2ft) | 1.8m (5.9ft) | 1.7m (5.6ft) | 1.7m (5.6ft) | 1.7m (5.6ft) | 1.8m (5.9ft) | 2.0m (6.6ft) | 2.2m (7.2ft) |
| Direction | 211° SSW | 211° SSW | 211° SSW | 211° SSW | 215° SW | 215° SW | 214° SW | 215° SW |
| Period | 11.8 sec. | 11.7 sec. | 11.3 sec. | 10.8 sec. | 10.6 sec. | 10.6 sec. | 13.2 sec. | 18.2 sec. |
| Significant height | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 0.9m (3ft) | 1.0m (3.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.1m (3.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) | 21°C (70°F) |