Sea weather in Hitachi-Naka in Japan All the beach weather in Hitachi-Naka
All the essential weather information for enjoying the beach in Hitachi-Naka in Japan, 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 Hitachi-Naka over the next 7 days?
Discover the best moment to go to the beach in Hitachi-Naka in Japan this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Hitachi-Naka. 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 | 40°F to 52°F | 8.7mph | discouraged | all the sea weather |
| Tuesday 16 December 2025 | 41°F to 50°F | 6.2mph | recommended | all the sea weather |
| Wednesday 17 December 2025 | 45°F to 50°F | 10.6mph | recommended | all the sea weather |
| Thursday 18 December 2025 | 43°F to 49°F | 3.7mph | recommended | all the sea weather |
| Friday 19 December 2025 | 47°F to 54°F | 4.4mph | recommended | all the sea weather |
| Saturday 20 December 2025 | 47°F to 61°F | 5.6mph | recommended | all the sea weather |
| Sunday 21 December 2025 | 56°F to 63°F | 24.2mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Hitachi-Naka
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 06:41 and will set at 16:23 on the beach(es) of Hitachi-Naka. The outside temperature will be a high of 52°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 19.9mph km/h (with gusts up to 24.9mph). 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 | 10°C (49°F) | 8°C (46°F) | 8°C (46°F) | 9°C (48°F) | 11°C (51°F) | 9°C (49°F) | 4°C (39°F) | 7°C (45°F) |
| Perceived temperature | 6°C (43°F) | 5°C (41°F) | 5°C (40°F) | 6°C (43°F) | 8°C (46°F) | 6°C (43°F) | -0°C (32°F) | 4°C (40°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 52% | 62% | 59% | 53% | 41% | 40% | 49% | 52% |
| Barometric pressure | 1001 hPa | 1004 hPa | 1009 hPa | 1013 hPa | 1013 hPa | 1016 hPa | 1018 hPa | 1020 hPa |
| Cloud cover | 3% | 29% | 5% | 16% | 27% | 6% | 0% | 3% |
| Heat index | 10°C (49°F) | 8°C (46°F) | 8°C (46°F) | 9°C (48°F) | 11°C (51°F) | 9°C (49°F) | 4°C (39°F) | 7°C (45°F) |
| Dew point | 0°C (33°F) | 1°C (34°F) | 1°C (33°F) | -0°C (32°F) | -2°C (28°F) | -4°C (25°F) | -6°C (22°F) | -2°C (28°F) |
| Wind | ||||||||
| Speed | 32km/h (20mph) | 21km/h (13mph) | 21km/h (13mph) | 22km/h (14mph) | 24km/h (15mph) | 25km/h (15mph) | 21km/h (13mph) | 14km/h (9mph) |
| Gusts | 36km/h (22mph) | 34km/h (21mph) | 33km/h (21mph) | 29km/h (18mph) | 31km/h (19mph) | 40km/h (25mph) | 22km/h (14mph) | 21km/h (13mph) |
| Direction | 257° WSW | 279° W | 292° WNW | 306° NW | 308° NW | 317° NW | 343° NNW | 335° NNW |
| Wind chill | 6°C (43°F) | 5°C (41°F) | 5°C (40°F) | 6°C (43°F) | 8°C (46°F) | 6°C (43°F) | -0°C (32°F) | 4°C (40°F) |
| Waves | ||||||||
| Height | 1.9m (6.4ft) | 1.6m (5.2ft) | 1.3m (4.1ft) | 1.1m (3.6ft) | 1.1m (3.5ft) | 1.0m (3.4ft) | 1.0m (3.4ft) | 0.9m (3.1ft) |
| Direction | 131° SE | 131° SE | 126° SE | 122° ESE | 105° ESE | 99° E | 91° E | 83° E |
| Period | 10.8 sec. | 10.2 sec. | 10.2 sec. | 11.5 sec. | 10.0 sec. | 9.0 sec. | 11.8 sec. | 11.5 sec. |
| Significant height | 1.7m (5.6ft) | 1.0m (3.3ft) | 0.7m (2.3ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 1.0m (3.3ft) | 1.1m (3.6ft) | 0.9m (3ft) |
| Sea water temperature | ||||||||
| Water temperature | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) |
Sea weather on Tuesday 16 December 2025
On Tuesday 16 December 2025, the sun will rise at 06:42 and will set at 16:24 on the beach(es) of Hitachi-Naka. 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 8.1mph km/h (with gusts up to 16.8mph). Wave height will be up to 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 (43°F) | 6°C (42°F) | 6°C (42°F) | 7°C (44°F) | 9°C (48°F) | 9°C (47°F) | 7°C (45°F) | 8°C (46°F) |
| Perceived temperature | 3°C (38°F) | 4°C (39°F) | 4°C (39°F) | 6°C (42°F) | 8°C (46°F) | 7°C (44°F) | 5°C (41°F) | 6°C (43°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 60% | 62% | 62% | 56% | 44% | 42% | 50% | 52% |
| Barometric pressure | 1020 hPa | 1020 hPa | 1022 hPa | 1022 hPa | 1020 hPa | 1019 hPa | 1019 hPa | 1019 hPa |
| Cloud cover | 10% | 65% | 45% | 50% | 37% | 3% | 4% | 4% |
| Heat index | 6°C (43°F) | 6°C (42°F) | 6°C (42°F) | 7°C (44°F) | 9°C (48°F) | 9°C (47°F) | 7°C (45°F) | 8°C (46°F) |
| Dew point | -1°C (30°F) | -1°C (30°F) | -1°C (30°F) | -1°C (30°F) | -3°C (27°F) | -4°C (26°F) | -2°C (28°F) | -2°C (29°F) |
| Wind | ||||||||
| Speed | 12km/h (7mph) | 8km/h (5mph) | 7km/h (4mph) | 6km/h (4mph) | 6km/h (4mph) | 11km/h (7mph) | 13km/h (8mph) | 10km/h (6mph) |
| Gusts | 18km/h (11mph) | 11km/h (7mph) | 11km/h (7mph) | 9km/h (5mph) | 9km/h (5mph) | 20km/h (13mph) | 27km/h (17mph) | 17km/h (11mph) |
| Direction | 334° NNW | 325° NW | 324° NW | 318° NW | 245° WSW | 211° SSW | 218° SW | 266° W |
| Wind chill | 3°C (38°F) | 4°C (39°F) | 4°C (39°F) | 6°C (42°F) | 8°C (46°F) | 7°C (44°F) | 5°C (41°F) | 6°C (43°F) |
| Waves | ||||||||
| Height | 0.9m (3.1ft) | 0.9m (2.9ft) | 0.8m (2.8ft) | 0.8m (2.6ft) | 0.7m (2.5ft) | 0.7m (2.4ft) | 0.7m (2.5ft) | 0.7m (2.5ft) |
| Direction | 71° ENE | 64° ENE | 66° ENE | 68° ENE | 70° ENE | 69° ENE | 69° ENE | 70° ENE |
| Period | 7.3 sec. | 8.2 sec. | 11.9 sec. | 11.9 sec. | 12.0 sec. | 12.5 sec. | 12.8 sec. | 12.7 sec. |
| Significant height | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.9m (3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) |
Sea weather on Wednesday 17 December 2025
On Wednesday 17 December 2025, the sun will rise at 06:43 and will set at 16:24 on the beach(es) of Hitachi-Naka. 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 10.6mph km/h (with gusts up to 14.9mph). Wave height will be up to 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 (44°F) | 7°C (44°F) | 9°C (47°F) | 10°C (50°F) | 10°C (50°F) | 9°C (49°F) | 9°C (49°F) |
| Perceived temperature | 6°C (42°F) | 5°C (41°F) | 4°C (40°F) | 6°C (43°F) | 8°C (47°F) | 8°C (47°F) | 8°C (46°F) | 7°C (44°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 52% | 51% | 64% | 63% | 61% | 63% | 68% | 69% |
| Barometric pressure | 1018 hPa | 1018 hPa | 1019 hPa | 1020 hPa | 1018 hPa | 1018 hPa | 1020 hPa | 1020 hPa |
| Cloud cover | 3% | 3% | 13% | 26% | 67% | 45% | 81% | 100% |
| Heat index | 7°C (45°F) | 7°C (44°F) | 7°C (44°F) | 9°C (47°F) | 10°C (50°F) | 10°C (50°F) | 9°C (49°F) | 9°C (49°F) |
| Dew point | -2°C (28°F) | -3°C (27°F) | 1°C (33°F) | 2°C (36°F) | 3°C (37°F) | 3°C (38°F) | 4°C (39°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 8km/h (5mph) | 13km/h (8mph) | 14km/h (9mph) | 12km/h (7mph) | 13km/h (8mph) | 11km/h (7mph) | 17km/h (11mph) |
| Gusts | 13km/h (8mph) | 13km/h (8mph) | 23km/h (14mph) | 19km/h (12mph) | 15km/h (9mph) | 18km/h (11mph) | 18km/h (11mph) | 24km/h (15mph) |
| Direction | 279° W | 326° NNW | 23° NNE | 23° NNE | 47° NE | 63° ENE | 42° NE | 14° NNE |
| Wind chill | 6°C (42°F) | 5°C (41°F) | 4°C (40°F) | 6°C (43°F) | 8°C (47°F) | 8°C (47°F) | 8°C (46°F) | 7°C (44°F) |
| Waves | ||||||||
| Height | 0.7m (2.4ft) | 0.7m (2.4ft) | 0.7m (2.3ft) | 0.9m (3.0ft) | 0.8m (2.8ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.7ft) |
| Direction | 72° ENE | 73° ENE | 74° ENE | 75° ENE | 76° ENE | 76° ENE | 76° ENE | 76° ENE |
| Period | 12.5 sec. | 12.3 sec. | 11.9 sec. | 11.7 sec. | 11.3 sec. | 11.1 sec. | 11.0 sec. | 10.8 sec. |
| Significant height | 0.8m (2.6ft) | 0.7m (2.3ft) | 1.0m (3.3ft) | 1.2m (3.9ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.9m (3ft) |
| Sea water temperature | ||||||||
| Water temperature | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) |
Sea weather on Thursday 18 December 2025
On Thursday 18 December 2025, the sun will rise at 06:43 and will set at 16:25 on the beach(es) of Hitachi-Naka. The outside temperature will be a high of 49°F t and a low of 43°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 13.7mph). Wave height will be up to 3.3ft 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) | 6°C (43°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 8°C (47°F) | 9°C (49°F) |
| Perceived temperature | 4°C (40°F) | 5°C (41°F) | 4°C (39°F) | 6°C (42°F) | 7°C (45°F) | 6°C (42°F) | 7°C (44°F) | 9°C (48°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 75% | 67% | 62% | 50% | 41% | 43% | 56% | 61% |
| Barometric pressure | 1021 hPa | 1022 hPa | 1024 hPa | 1026 hPa | 1025 hPa | 1026 hPa | 1027 hPa | 1027 hPa |
| Cloud cover | 84% | 40% | 4% | 0% | 0% | 2% | 20% | 65% |
| Heat index | 7°C (45°F) | 7°C (45°F) | 6°C (43°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 8°C (47°F) | 9°C (49°F) |
| Dew point | 3°C (38°F) | 1°C (34°F) | -1°C (31°F) | -2°C (28°F) | -5°C (23°F) | -5°C (24°F) | -0°C (32°F) | 2°C (36°F) |
| Wind | ||||||||
| Speed | 17km/h (11mph) | 11km/h (7mph) | 12km/h (7mph) | 9km/h (5mph) | 1km/h (1mph) | 8km/h (5mph) | 9km/h (5mph) | 6km/h (4mph) |
| Gusts | 22km/h (14mph) | 15km/h (9mph) | 17km/h (11mph) | 11km/h (7mph) | 2km/h (1mph) | 16km/h (10mph) | 15km/h (9mph) | 9km/h (5mph) |
| Direction | 358° N | 357° N | 351° N | 337° NNW | 289° WNW | 133° SE | 113° ESE | 116° ESE |
| Wind chill | 4°C (40°F) | 5°C (41°F) | 4°C (39°F) | 6°C (42°F) | 7°C (45°F) | 6°C (42°F) | 7°C (44°F) | 9°C (48°F) |
| Waves | ||||||||
| Height | 0.9m (2.9ft) | 0.8m (2.8ft) | 0.9m (3.0ft) | 1.0m (3.2ft) | 1.0m (3.3ft) | 1.0m (3.2ft) | 1.0m (3.2ft) | 1.0m (3.1ft) |
| Direction | 74° ENE | 75° ENE | 74° ENE | 75° ENE | 73° ENE | 74° ENE | 75° ENE | 73° ENE |
| Period | 10.5 sec. | 4.4 sec. | 5.0 sec. | 5.2 sec. | 5.5 sec. | 5.6 sec. | 6.1 sec. | 14.8 sec. |
| Significant height | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.9m (3ft) | 0.8m (2.6ft) | 0.9m (3ft) | 1.0m (3.3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) |
Sea weather on Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 06:44 and will set at 16:25 on the beach(es) of Hitachi-Naka. The outside temperature will be a high of 54°F t and a low of 47°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 4.4mph km/h (with gusts up to 7.5mph). Wave height will be up to 3.3ft 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) | 9°C (48°F) | 9°C (47°F) | 10°C (51°F) | 12°C (53°F) | 10°C (50°F) | 8°C (47°F) | 11°C (51°F) |
| Perceived temperature | 9°C (49°F) | 8°C (47°F) | 8°C (46°F) | 10°C (50°F) | 12°C (54°F) | 10°C (51°F) | 7°C (45°F) | 10°C (50°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 63% | 66% | 68% | 64% | 62% | 59% | 61% | 63% |
| Barometric pressure | 1027 hPa | 1027 hPa | 1027 hPa | 1028 hPa | 1026 hPa | 1026 hPa | 1027 hPa | 1028 hPa |
| Cloud cover | 59% | 82% | 53% | 34% | 6% | 0% | 2% | 0% |
| Heat index | 10°C (49°F) | 9°C (48°F) | 9°C (47°F) | 10°C (51°F) | 12°C (53°F) | 10°C (50°F) | 8°C (47°F) | 11°C (51°F) |
| Dew point | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 4°C (39°F) | 5°C (40°F) | 3°C (37°F) | 1°C (34°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 4km/h (3mph) | 5km/h (3mph) | 5km/h (3mph) | 5km/h (3mph) | 4km/h (2mph) | 4km/h (2mph) | 6km/h (4mph) | 7km/h (4mph) |
| Gusts | 6km/h (4mph) | 8km/h (5mph) | 8km/h (5mph) | 7km/h (4mph) | 5km/h (3mph) | 8km/h (5mph) | 12km/h (8mph) | 12km/h (8mph) |
| Direction | 256° WSW | 310° NW | 346° NNW | 342° NNW | 322° NW | 222° SW | 249° WSW | 256° WSW |
| Wind chill | 9°C (49°F) | 8°C (47°F) | 8°C (46°F) | 10°C (50°F) | 12°C (54°F) | 10°C (51°F) | 7°C (45°F) | 10°C (50°F) |
| Waves | ||||||||
| Height | 0.9m (3.1ft) | 0.9m (3.1ft) | 1.0m (3.1ft) | 1.0m (3.1ft) | 1.0m (3.1ft) | 1.0m (3.1ft) | 1.0m (3.1ft) | 1.0m (3.2ft) |
| Direction | 74° ENE | 75° ENE | 74° ENE | 75° ENE | 76° ENE | 76° ENE | 77° ENE | 77° ENE |
| Period | 14.5 sec. | 14.3 sec. | 13.8 sec. | 13.5 sec. | 13.3 sec. | 13.0 sec. | 12.6 sec. | 12.4 sec. |
| Significant height | 0.8m (2.6ft) | 0.8m (2.6ft) | 1.2m (3.9ft) | 1.2m (3.9ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 1.2m (3.9ft) | 1.2m (3.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) |
Sea weather on Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 06:44 and will set at 16:25 on the beach(es) of Hitachi-Naka. The outside temperature will be a high of 61°F t and a low of 47°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 3.6ft 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) | 8°C (47°F) | 10°C (50°F) | 14°C (56°F) | 16°C (60°F) | 13°C (55°F) | 13°C (56°F) |
| Perceived temperature | 8°C (46°F) | 7°C (45°F) | 7°C (44°F) | 9°C (48°F) | 12°C (54°F) | 16°C (60°F) | 12°C (54°F) | 13°C (55°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 62% | 59% | 59% | 54% | 50% | 62% | 71% | 78% |
| Barometric pressure | 1027 hPa | 1027 hPa | 1027 hPa | 1027 hPa | 1025 hPa | 1024 hPa | 1025 hPa | 1024 hPa |
| Cloud cover | 0% | 0% | 7% | 10% | 11% | 42% | 80% | 11% |
| Heat index | 9°C (49°F) | 9°C (48°F) | 8°C (47°F) | 10°C (50°F) | 14°C (56°F) | 16°C (60°F) | 13°C (55°F) | 13°C (56°F) |
| Dew point | 3°C (37°F) | 1°C (34°F) | 1°C (33°F) | 1°C (34°F) | 4°C (38°F) | 9°C (47°F) | 8°C (46°F) | 10°C (49°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 9km/h (6mph) | 9km/h (5mph) | 9km/h (6mph) | 14km/h (9mph) | 15km/h (9mph) | 9km/h (6mph) | 9km/h (6mph) |
| Gusts | 17km/h (10mph) | 16km/h (10mph) | 15km/h (10mph) | 13km/h (8mph) | 20km/h (13mph) | 23km/h (15mph) | 19km/h (12mph) | 18km/h (11mph) |
| Direction | 260° W | 263° W | 266° W | 267° W | 235° SW | 230° SW | 247° WSW | 223° SW |
| Wind chill | 8°C (46°F) | 7°C (45°F) | 7°C (44°F) | 9°C (48°F) | 12°C (54°F) | 16°C (60°F) | 12°C (54°F) | 13°C (55°F) |
| Waves | ||||||||
| Height | 1.0m (3.4ft) | 1.1m (3.5ft) | 1.1m (3.5ft) | 1.1m (3.5ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.0m (3.4ft) | 1.0m (3.2ft) |
| Direction | 77° ENE | 78° ENE | 79° ENE | 79° E | 79° E | 80° E | 81° E | 81° E |
| Period | 12.1 sec. | 5.0 sec. | 5.2 sec. | 5.5 sec. | 5.6 sec. | 5.7 sec. | 5.6 sec. | 5.6 sec. |
| Significant height | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.2m (3.9ft) | 1.3m (4.3ft) | 0.9m (3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) |
Sea weather on Sunday 21 December 2025
On Sunday 21 December 2025, the sun will rise at 06:45 and will set at 16:26 on the beach(es) of Hitachi-Naka. The outside temperature will be a high of 63°F t and a low of 56°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 24.2mph km/h (with gusts up to 26.7mph). Wave height will be up to 5.2ft 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) | 13°C (55°F) | 13°C (55°F) | 14°C (58°F) | 16°C (61°F) | 17°C (63°F) | 17°C (62°F) | 17°C (63°F) |
| Perceived temperature | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 13°C (56°F) | 16°C (61°F) | 17°C (63°F) | 17°C (62°F) | 17°C (63°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0.1in |
| Humidity | 85% | 89% | 88% | 86% | 77% | 76% | 88% | 92% |
| Barometric pressure | 1023 hPa | 1022 hPa | 1021 hPa | 1021 hPa | 1017 hPa | 1014 hPa | 1011 hPa | 1007 hPa |
| Cloud cover | 24% | 64% | 100% | 98% | 70% | 69% | 100% | 100% |
| Heat index | 13°C (55°F) | 13°C (55°F) | 13°C (55°F) | 14°C (58°F) | 16°C (61°F) | 17°C (63°F) | 17°C (62°F) | 17°C (63°F) |
| Dew point | 11°C (51°F) | 11°C (51°F) | 11°C (52°F) | 12°C (53°F) | 12°C (54°F) | 13°C (55°F) | 14°C (58°F) | 16°C (60°F) |
| Wind | ||||||||
| Speed | 9km/h (6mph) | 8km/h (5mph) | 8km/h (5mph) | 13km/h (8mph) | 24km/h (15mph) | 32km/h (20mph) | 36km/h (23mph) | 39km/h (24mph) |
| Gusts | 17km/h (11mph) | 15km/h (9mph) | 14km/h (9mph) | 22km/h (14mph) | 42km/h (26mph) | 35km/h (22mph) | 43km/h (26mph) | 40km/h (25mph) |
| Direction | 223° SW | 242° WSW | 232° SW | 208° SSW | 184° S | 181° S | 167° SSE | 177° S |
| Wind chill | 12°C (54°F) | 12°C (54°F) | 12°C (54°F) | 13°C (56°F) | 16°C (61°F) | 17°C (63°F) | 17°C (62°F) | 17°C (63°F) |
| Waves | ||||||||
| Height | 0.9m (3.1ft) | 1.0m (3.2ft) | 1.1m (3.7ft) | 1.2m (4.0ft) | 1.2m (3.8ft) | 1.2m (3.8ft) | 1.3m (4.4ft) | 1.6m (5.2ft) |
| Direction | 82° E | 82° E | 143° SE | 144° SE | 140° SE | 141° SE | 137° SE | 138° SE |
| Period | 5.6 sec. | 5.7 sec. | 6.0 sec. | 6.2 sec. | 6.4 sec. | 6.5 sec. | 6.8 sec. | 10.3 sec. |
| Significant height | 0.8m (2.6ft) | 0.9m (3ft) | 1.0m (3.3ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.8m (2.6ft) | 1.1m (3.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) | 18°C (64°F) |