Sea weather in Blenheim in New Zealand All the beach weather in Blenheim
All the essential weather information for enjoying the beach in Blenheim in New Zealand, 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 Blenheim over the next 7 days?
Discover the best moment to go to the beach in Blenheim in New Zealand this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Blenheim. 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 | 56°F to 70°F | 28.6mph | not recommended | all the sea weather |
| Tuesday 16 December 2025 | 52°F to 67°F | 12.4mph | not recommended | all the sea weather |
| Wednesday 17 December 2025 | 50°F to 59°F | 14.3mph | not recommended | all the sea weather |
| Thursday 18 December 2025 | 52°F to 63°F | 21.8mph | discouraged | all the sea weather |
| Friday 19 December 2025 | 54°F to 67°F | 11.2mph | discouraged | all the sea weather |
| Saturday 20 December 2025 | 50°F to 54°F | 5mph | discouraged | all the sea weather |
| Sunday 21 December 2025 | 49°F to 59°F | 7.5mph | recommended | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Blenheim
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 05:42 and will set at 20:54 on the beach(es) of Blenheim. The outside temperature will be a high of 70°F t and a low of 56°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 34.2mph km/h (with gusts up to 36mph). Wave height will be up to 6.2ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | |  | | | | | |
| Outside temperature | 14°C (57°F) | 13°C (56°F) | 15°C (58°F) | 19°C (67°F) | 20°C (69°F) | 20°C (69°F) | 18°C (64°F) | 17°C (62°F) |
| Perceived temperature | 12°C (53°F) | 11°C (51°F) | 12°C (54°F) | 19°C (67°F) | 20°C (69°F) | 20°C (69°F) | 18°C (64°F) | 17°C (62°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 77% | 82% | 76% | 50% | 47% | 53% | 59% | 73% |
| Barometric pressure | 1017 hPa | 1016 hPa | 1015 hPa | 1014 hPa | 1012 hPa | 1010 hPa | 1009 hPa | 1010 hPa |
| Cloud cover | 33% | 4% | 12% | 6% | 7% | 11% | 8% | 6% |
| Heat index | 14°C (57°F) | 13°C (56°F) | 15°C (58°F) | 19°C (67°F) | 20°C (69°F) | 20°C (69°F) | 18°C (64°F) | 17°C (62°F) |
| Dew point | 10°C (50°F) | 10°C (50°F) | 10°C (51°F) | 9°C (48°F) | 9°C (48°F) | 10°C (51°F) | 10°C (49°F) | 12°C (53°F) |
| Wind | ||||||||
| Speed | 26km/h (16mph) | 29km/h (18mph) | 37km/h (23mph) | 47km/h (29mph) | 52km/h (32mph) | 55km/h (34mph) | 49km/h (31mph) | 46km/h (29mph) |
| Gusts | 29km/h (18mph) | 31km/h (19mph) | 37km/h (23mph) | 47km/h (30mph) | 58km/h (36mph) | 58km/h (36mph) | 56km/h (35mph) | 53km/h (33mph) |
| Direction | 344° NNW | 339° NNW | 336° NNW | 334° NNW | 338° NNW | 339° NNW | 341° NNW | 335° NNW |
| Wind chill | 12°C (53°F) | 11°C (51°F) | 12°C (54°F) | 19°C (67°F) | 20°C (69°F) | 20°C (69°F) | 18°C (64°F) | 17°C (62°F) |
| Waves | ||||||||
| Height | 1.2m (3.8ft) | 1.2m (3.9ft) | 1.3m (4.2ft) | 1.3m (4.4ft) | 1.6m (5.3ft) | 1.9m (6.2ft) | 1.7m (5.7ft) | 1.5m (4.8ft) |
| Direction | 5° N | 3° N | 358° N | 354° N | 4° N | 8° N | 2° N | 355° N |
| Period | 6.4 sec. | 6.5 sec. | 6.8 sec. | 7.1 sec. | 8.3 sec. | 11.6 sec. | 11.1 sec. | 11.0 sec. |
| Significant height | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.5m (4.9ft) | 1.6m (5.2ft) | 2.0m (6.6ft) | 2.1m (6.9ft) | 1.8m (5.9ft) | 1.5m (4.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 05:43 and will set at 20:55 on the beach(es) of Blenheim. The outside temperature will be a high of 67°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 26.7mph km/h (with gusts up to 30.5mph). 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 | 17°C (63°F) | 17°C (62°F) | 17°C (62°F) | 19°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 14°C (56°F) |
| Perceived temperature | 17°C (63°F) | 17°C (62°F) | 17°C (62°F) | 19°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 12°C (53°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 76% | 82% | 88% | 76% | 67% | 51% | 43% | 58% |
| Barometric pressure | 1008 hPa | 1005 hPa | 1004 hPa | 1003 hPa | 1003 hPa | 1001 hPa | 1001 hPa | 1003 hPa |
| Cloud cover | 36% | 93% | 100% | 80% | 57% | 11% | 9% | 0% |
| Heat index | 17°C (63°F) | 17°C (62°F) | 17°C (62°F) | 19°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 14°C (56°F) |
| Dew point | 13°C (55°F) | 14°C (57°F) | 15°C (58°F) | 14°C (58°F) | 12°C (53°F) | 8°C (46°F) | 5°C (41°F) | 6°C (42°F) |
| Wind | ||||||||
| Speed | 42km/h (26mph) | 42km/h (26mph) | 43km/h (27mph) | 40km/h (25mph) | 32km/h (20mph) | 33km/h (21mph) | 35km/h (22mph) | 20km/h (13mph) |
| Gusts | 44km/h (28mph) | 44km/h (28mph) | 44km/h (27mph) | 46km/h (29mph) | 49km/h (30mph) | 34km/h (21mph) | 42km/h (26mph) | 35km/h (22mph) |
| Direction | 339° NNW | 351° N | 351° N | 350° N | 336° NNW | 330° NNW | 316° NW | 305° NW |
| Wind chill | 17°C (63°F) | 17°C (62°F) | 17°C (62°F) | 19°C (65°F) | 18°C (64°F) | 18°C (64°F) | 17°C (63°F) | 12°C (53°F) |
| Waves | ||||||||
| Height | 1.3m (4.4ft) | 1.7m (5.7ft) | 2.0m (6.6ft) | 2.2m (7.3ft) | 1.4m (4.7ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.0m (3.3ft) |
| Direction | 352° N | 357° N | 9° N | 7° N | 12° NNE | 17° NNE | 19° NNE | 339° NNW |
| Period | 7.2 sec. | 7.3 sec. | 7.5 sec. | 10.3 sec. | 6.2 sec. | 10.7 sec. | 10.8 sec. | 10.8 sec. |
| Significant height | 1.4m (4.6ft) | 1.9m (6.2ft) | 2.0m (6.6ft) | 2.4m (7.9ft) | 0.7m (2.3ft) | 1.3m (4.3ft) | 0.9m (3ft) | 1.3m (4.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) |
Sea weather on Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 05:43 and will set at 20:55 on the beach(es) of Blenheim. The outside temperature will be a high of 59°F t and a low of 50°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 26.7mph km/h (with gusts up to 37.3mph). 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 | 11°C (52°F) | 10°C (50°F) | 11°C (52°F) | 11°C (52°F) | 15°C (59°F) | 14°C (57°F) | 12°C (54°F) | 12°C (54°F) |
| Perceived temperature | 9°C (48°F) | 8°C (47°F) | 9°C (49°F) | 9°C (49°F) | 15°C (59°F) | 11°C (52°F) | 9°C (48°F) | 10°C (50°F) |
| Precipitation | 0.1in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 77% | 74% | 69% | 74% | 49% | 58% | 64% | 71% |
| Barometric pressure | 1005 hPa | 1007 hPa | 1009 hPa | 1011 hPa | 1012 hPa | 1012 hPa | 1013 hPa | 1015 hPa |
| Cloud cover | 76% | 23% | 100% | 83% | 38% | 10% | 5% | 68% |
| Heat index | 11°C (52°F) | 10°C (50°F) | 11°C (52°F) | 11°C (52°F) | 15°C (59°F) | 14°C (57°F) | 12°C (54°F) | 12°C (54°F) |
| Dew point | 7°C (45°F) | 6°C (42°F) | 6°C (42°F) | 7°C (44°F) | 5°C (40°F) | 6°C (42°F) | 6°C (42°F) | 7°C (45°F) |
| Wind | ||||||||
| Speed | 17km/h (11mph) | 13km/h (8mph) | 14km/h (9mph) | 13km/h (8mph) | 33km/h (20mph) | 43km/h (27mph) | 36km/h (23mph) | 23km/h (14mph) |
| Gusts | 31km/h (19mph) | 22km/h (14mph) | 20km/h (12mph) | 18km/h (11mph) | 39km/h (24mph) | 60km/h (37mph) | 37km/h (23mph) | 37km/h (23mph) |
| Direction | 221° SW | 245° WSW | 217° SW | 227° SW | 201° SSW | 183° S | 186° S | 189° S |
| Wind chill | 9°C (48°F) | 8°C (47°F) | 9°C (49°F) | 9°C (49°F) | 15°C (59°F) | 11°C (52°F) | 9°C (48°F) | 10°C (50°F) |
| Waves | ||||||||
| Height | 1.0m (3.2ft) | 1.2m (4.1ft) | 1.7m (5.5ft) | 1.6m (5.4ft) | 2.3m (7.4ft) | 2.0m (6.5ft) | 1.5m (4.9ft) | 1.3m (4.4ft) |
| Direction | 335° NNW | 195° SSW | 185° S | 187° S | 181° S | 183° S | 182° S | 175° S |
| Period | 4.4 sec. | 8.5 sec. | 8.9 sec. | 9.8 sec. | 8.4 sec. | 15.7 sec. | 7.3 sec. | 6.8 sec. |
| Significant height | 1.0m (3.3ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 1.7m (5.6ft) | 1.1m (3.6ft) | 0.5m (1.6ft) | 0.3m (1ft) |
| Sea water temperature | ||||||||
| Water temperature | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 05:43 and will set at 20:56 on the beach(es) of Blenheim. The outside temperature will be a high of 63°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! The sea will be generally calm, with a wind speed of up to 21.8mph km/h (with gusts up to 28mph). Wave height will be up to 4.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 13°C (55°F) | 11°C (52°F) | 12°C (54°F) | 15°C (59°F) | 16°C (60°F) | 17°C (62°F) | 15°C (58°F) | 15°C (58°F) |
| Perceived temperature | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 14°C (58°F) | 16°C (60°F) | 17°C (62°F) | 13°C (55°F) | 12°C (54°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 69% | 75% | 76% | 65% | 68% | 66% | 76% | 85% |
| Barometric pressure | 1015 hPa | 1013 hPa | 1014 hPa | 1013 hPa | 1011 hPa | 1009 hPa | 1008 hPa | 1007 hPa |
| Cloud cover | 55% | 91% | 100% | 44% | 52% | 48% | 53% | 72% |
| Heat index | 13°C (55°F) | 11°C (52°F) | 12°C (54°F) | 15°C (59°F) | 16°C (60°F) | 17°C (62°F) | 15°C (58°F) | 15°C (58°F) |
| Dew point | 7°C (45°F) | 7°C (44°F) | 8°C (47°F) | 9°C (47°F) | 10°C (50°F) | 10°C (50°F) | 10°C (51°F) | 12°C (54°F) |
| Wind | ||||||||
| Speed | 17km/h (10mph) | 6km/h (4mph) | 10km/h (6mph) | 12km/h (8mph) | 23km/h (14mph) | 32km/h (20mph) | 32km/h (20mph) | 35km/h (22mph) |
| Gusts | 24km/h (15mph) | 11km/h (7mph) | 14km/h (9mph) | 15km/h (9mph) | 31km/h (20mph) | 45km/h (28mph) | 34km/h (21mph) | 41km/h (26mph) |
| Direction | 216° SW | 303° WNW | 342° NNW | 4° N | 11° N | 15° NNE | 10° N | 6° N |
| Wind chill | 11°C (52°F) | 11°C (51°F) | 11°C (52°F) | 14°C (58°F) | 16°C (60°F) | 17°C (62°F) | 13°C (55°F) | 12°C (54°F) |
| Waves | ||||||||
| Height | 1.3m (4.2ft) | 1.2m (4.0ft) | 1.2m (3.8ft) | 1.1m (3.5ft) | 1.0m (3.2ft) | 1.0m (3.4ft) | 1.3m (4.3ft) | 1.2m (4.1ft) |
| Direction | 170° S | 167° SSE | 164° SSE | 161° SSE | 159° SSE | 160° SSE | 26° NNE | 18° NNE |
| Period | 7.0 sec. | 7.5 sec. | 7.5 sec. | 7.4 sec. | 7.2 sec. | 7.1 sec. | 7.1 sec. | 7.0 sec. |
| Significant height | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.7ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.5m (4.9ft) | 1.3m (4.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 05:44 and will set at 20:57 on the beach(es) of Blenheim. The outside temperature will be a high of 67°F t and a low of 54°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 20.5mph km/h (with gusts up to 28.6mph). Wave height will be up to 3.6ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | |  | |
| Outside temperature | 14°C (58°F) | 14°C (56°F) | 15°C (58°F) | 18°C (64°F) | 19°C (67°F) | 19°C (67°F) | 17°C (63°F) | 15°C (59°F) |
| Perceived temperature | 13°C (55°F) | 13°C (55°F) | 14°C (57°F) | 18°C (64°F) | 19°C (67°F) | 19°C (67°F) | 17°C (63°F) | 14°C (56°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 79% | 72% | 67% | 54% | 44% | 48% | 63% | 80% |
| Barometric pressure | 1004 hPa | 1002 hPa | 1003 hPa | 1002 hPa | 999 hPa | 997 hPa | 996 hPa | 997 hPa |
| Cloud cover | 33% | 4% | 15% | 48% | 52% | 29% | 82% | 78% |
| Heat index | 14°C (58°F) | 14°C (56°F) | 15°C (58°F) | 18°C (64°F) | 19°C (67°F) | 19°C (67°F) | 17°C (63°F) | 15°C (59°F) |
| Dew point | 11°C (51°F) | 9°C (48°F) | 9°C (48°F) | 8°C (47°F) | 7°C (44°F) | 8°C (46°F) | 10°C (50°F) | 11°C (52°F) |
| Wind | ||||||||
| Speed | 18km/h (11mph) | 13km/h (8mph) | 12km/h (7mph) | 18km/h (11mph) | 30km/h (19mph) | 33km/h (20mph) | 33km/h (20mph) | 18km/h (11mph) |
| Gusts | 31km/h (19mph) | 27km/h (17mph) | 22km/h (13mph) | 27km/h (17mph) | 46km/h (29mph) | 36km/h (22mph) | 39km/h (24mph) | 28km/h (18mph) |
| Direction | 344° NNW | 296° WNW | 302° WNW | 323° NW | 309° NW | 318° NW | 346° NNW | 241° WSW |
| Wind chill | 13°C (55°F) | 13°C (55°F) | 14°C (57°F) | 18°C (64°F) | 19°C (67°F) | 19°C (67°F) | 17°C (63°F) | 14°C (56°F) |
| Waves | ||||||||
| Height | 1.1m (3.6ft) | 0.9m (3.1ft) | 0.8m (2.7ft) | 0.7m (2.5ft) | 0.7m (2.5ft) | 0.9m (3.0ft) | 1.0m (3.2ft) | 0.9m (2.9ft) |
| Direction | 23° NNE | 146° SSE | 145° SE | 142° SE | 136° SE | 136° SE | 135° SE | 131° SE |
| Period | 8.0 sec. | 4.3 sec. | 7.5 sec. | 7.2 sec. | 6.8 sec. | 6.6 sec. | 9.8 sec. | 4.0 sec. |
| Significant height | 1.0m (3.3ft) | 0.4m (1.3ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.8m (2.6ft) | 1.4m (4.6ft) | 0.9m (3ft) | 0.6m (2ft) |
| Sea water temperature | ||||||||
| Water temperature | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) |
Sea weather on Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 05:44 and will set at 20:57 on the beach(es) of Blenheim. The outside temperature will be a high of 54°F t and a low of 50°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 6.6ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 12°C (53°F) | 10°C (51°F) | 10°C (50°F) | 11°C (52°F) | 11°C (51°F) | 10°C (51°F) | 11°C (52°F) | 10°C (51°F) |
| Perceived temperature | 8°C (47°F) | 7°C (45°F) | 7°C (45°F) | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 10°C (50°F) | 10°C (49°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 87% | 81% | 82% | 72% | 74% | 73% | 69% | 78% |
| Barometric pressure | 1000 hPa | 1001 hPa | 1004 hPa | 1005 hPa | 1006 hPa | 1006 hPa | 1006 hPa | 1007 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 100% | 100% | 80% | 34% |
| Heat index | 12°C (53°F) | 10°C (51°F) | 10°C (50°F) | 11°C (52°F) | 11°C (51°F) | 10°C (51°F) | 11°C (52°F) | 10°C (51°F) |
| Dew point | 9°C (49°F) | 7°C (45°F) | 7°C (44°F) | 6°C (43°F) | 6°C (43°F) | 6°C (42°F) | 6°C (42°F) | 7°C (44°F) |
| Wind | ||||||||
| Speed | 34km/h (21mph) | 30km/h (19mph) | 20km/h (13mph) | 17km/h (11mph) | 14km/h (9mph) | 9km/h (5mph) | 11km/h (7mph) | 8km/h (5mph) |
| Gusts | 46km/h (29mph) | 41km/h (25mph) | 28km/h (17mph) | 22km/h (13mph) | 19km/h (12mph) | 12km/h (7mph) | 15km/h (9mph) | 13km/h (8mph) |
| Direction | 186° S | 186° S | 184° S | 176° S | 175° S | 156° SSE | 74° ENE | 9° N |
| Wind chill | 8°C (47°F) | 7°C (45°F) | 7°C (45°F) | 9°C (48°F) | 9°C (48°F) | 9°C (49°F) | 10°C (50°F) | 10°C (49°F) |
| Waves | ||||||||
| Height | 1.3m (4.4ft) | 1.8m (5.8ft) | 2.0m (6.7ft) | 1.5m (5.1ft) | 1.4m (4.7ft) | 1.4m (4.5ft) | 1.3m (4.4ft) | 1.3m (4.1ft) |
| Direction | 179° S | 187° S | 185° S | 183° S | 180° S | 178° S | 173° S | 173° S |
| Period | 4.0 sec. | 9.1 sec. | 7.7 sec. | 7.5 sec. | 7.6 sec. | 9.8 sec. | 9.7 sec. | 7.8 sec. |
| Significant height | 1.2m (3.9ft) | 0.8m (2.6ft) | 0.3m (1ft) | 0.1m (0.3ft) | 0.6m (2ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.4m (1.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) |
Sea weather on Sunday 21 December 2025
On Sunday 21 December 2025, the sun will rise at 05:44 and will set at 20:58 on the beach(es) of Blenheim. The outside temperature will be a high of 59°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 9.3mph km/h (with gusts up to 14.3mph). 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 | 9°C (49°F) | 9°C (48°F) | 10°C (50°F) | 14°C (56°F) | 14°C (58°F) | 14°C (57°F) | 15°C (58°F) | 13°C (55°F) |
| Perceived temperature | 8°C (47°F) | 7°C (45°F) | 9°C (49°F) | 14°C (56°F) | 13°C (56°F) | 13°C (55°F) | 14°C (58°F) | 12°C (53°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 82% | 77% | 67% | 57% | 60% | 58% | 70% | 83% |
| Barometric pressure | 1006 hPa | 1006 hPa | 1008 hPa | 1009 hPa | 1008 hPa | 1007 hPa | 1005 hPa | 1006 hPa |
| Cloud cover | 6% | 2% | 0% | 6% | 30% | 18% | 50% | 9% |
| Heat index | 9°C (49°F) | 9°C (48°F) | 10°C (50°F) | 14°C (56°F) | 14°C (58°F) | 14°C (57°F) | 15°C (58°F) | 13°C (55°F) |
| Dew point | 6°C (44°F) | 5°C (41°F) | 4°C (40°F) | 5°C (42°F) | 7°C (44°F) | 6°C (42°F) | 9°C (49°F) | 10°C (50°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 9km/h (5mph) | 7km/h (4mph) | 6km/h (4mph) | 15km/h (9mph) | 15km/h (9mph) | 9km/h (5mph) | 12km/h (8mph) |
| Gusts | 15km/h (9mph) | 16km/h (10mph) | 11km/h (7mph) | 8km/h (5mph) | 18km/h (11mph) | 21km/h (13mph) | 14km/h (9mph) | 23km/h (14mph) |
| Direction | 293° WNW | 244° WSW | 258° WSW | 104° ESE | 80° E | 44° NE | 85° E | 220° SW |
| Wind chill | 8°C (47°F) | 7°C (45°F) | 9°C (49°F) | 14°C (56°F) | 13°C (56°F) | 13°C (55°F) | 14°C (58°F) | 12°C (53°F) |
| Waves | ||||||||
| Height | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.5m (4.9ft) | 1.7m (5.7ft) | 1.6m (5.2ft) | 1.6m (5.2ft) | 1.6m (5.2ft) |
| Direction | 172° S | 172° S | 171° S | 179° S | 177° S | 176° S | 177° S | 179° S |
| Period | 7.8 sec. | 7.9 sec. | 11.0 sec. | 10.3 sec. | 10.1 sec. | 10.1 sec. | 10.1 sec. | 8.4 sec. |
| Significant height | 0.3m (1ft) | 0.2m (0.7ft) | 0.8m (2.6ft) | 1.2m (3.9ft) | 1.2m (3.9ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.4m (1.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) | 15°C (59°F) |