Sea weather in Hamamatsu in Japan All the beach weather in Hamamatsu
All the essential weather information for enjoying the beach in Hamamatsu 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 Hamamatsu over the next 7 days?
Discover the best moment to go to the beach in Hamamatsu in Japan this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Hamamatsu. 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 | 41°F to 50°F | 23.6mph | not recommended | all the sea weather |
| Tuesday 16 December 2025 | 45°F to 52°F | 18mph | discouraged | all the sea weather |
| Wednesday 17 December 2025 | 49°F to 56°F | 14.3mph | discouraged | all the sea weather |
| Thursday 18 December 2025 | 49°F to 56°F | 7.5mph | discouraged | all the sea weather |
| Friday 19 December 2025 | 49°F to 56°F | 2.5mph | recommended | all the sea weather |
| Saturday 20 December 2025 | 54°F to 61°F | 11.2mph | recommended | all the sea weather |
| Sunday 21 December 2025 | 61°F to 63°F | 18mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Hamamatsu
Sea weather on Monday 15 December 2025
On Monday 15 December 2025, the sun will rise at 06:49 and will set at 16:40 on the beach(es) of Hamamatsu. 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! Be careful, the sea will be generally rough with a wind speed of up to 31.1mph km/h (with gusts up to 39.8mph). 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 | 10°C (49°F) | 10°C (49°F) | 9°C (49°F) | 10°C (49°F) | 10°C (50°F) | 8°C (47°F) | 6°C (43°F) | 9°C (47°F) |
| Perceived temperature | 5°C (41°F) | 5°C (41°F) | 5°C (40°F) | 5°C (41°F) | 6°C (42°F) | 3°C (38°F) | 0°C (33°F) | 4°C (39°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 64% | 61% | 64% | 63% | 48% | 45% | 51% | 56% |
| Barometric pressure | 1011 hPa | 1012 hPa | 1014 hPa | 1017 hPa | 1017 hPa | 1018 hPa | 1020 hPa | 1020 hPa |
| Cloud cover | 82% | 4% | 6% | 2% | 3% | 0% | 0% | 26% |
| Heat index | 10°C (49°F) | 10°C (49°F) | 9°C (49°F) | 10°C (49°F) | 10°C (50°F) | 8°C (47°F) | 6°C (43°F) | 9°C (47°F) |
| Dew point | 3°C (38°F) | 2°C (36°F) | 3°C (37°F) | 3°C (37°F) | -1°C (31°F) | -3°C (27°F) | -3°C (26°F) | 0°C (32°F) |
| Wind | ||||||||
| Speed | 49km/h (30mph) | 50km/h (31mph) | 45km/h (28mph) | 43km/h (27mph) | 43km/h (27mph) | 41km/h (26mph) | 42km/h (26mph) | 38km/h (23mph) |
| Gusts | 61km/h (38mph) | 64km/h (40mph) | 57km/h (35mph) | 51km/h (32mph) | 44km/h (28mph) | 45km/h (28mph) | 45km/h (28mph) | 49km/h (30mph) |
| Direction | 300° WNW | 297° WNW | 298° WNW | 306° NW | 308° NW | 308° NW | 307° NW | 312° NW |
| Wind chill | 5°C (41°F) | 5°C (41°F) | 5°C (40°F) | 5°C (41°F) | 6°C (42°F) | 3°C (38°F) | 0°C (33°F) | 4°C (39°F) |
| Waves | ||||||||
| Height | 2.5m (8.2ft) | 2.5m (8.2ft) | 2.2m (7.2ft) | 1.9m (6.4ft) | 1.8m (5.9ft) | 1.6m (5.2ft) | 1.5m (4.8ft) | 1.4m (4.8ft) |
| Direction | 293° WNW | 282° WNW | 295° WNW | 300° WNW | 303° WNW | 304° NW | 306° NW | 310° NW |
| Period | 10.0 sec. | 9.6 sec. | 9.4 sec. | 9.3 sec. | 9.3 sec. | 9.3 sec. | 9.3 sec. | 9.1 sec. |
| Significant height | 2.1m (6.9ft) | 2.7m (8.9ft) | 2.3m (7.5ft) | 2.0m (6.6ft) | 1.9m (6.2ft) | 1.7m (5.6ft) | 1.7m (5.6ft) | 1.6m (5.2ft) |
| 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 06:50 and will set at 16:41 on the beach(es) of Hamamatsu. The outside temperature will be a high of 52°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 21.1mph km/h (with gusts up to 26.7mph). 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 | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 8°C (47°F) | 9°C (48°F) | 8°C (46°F) | 11°C (51°F) |
| Perceived temperature | 3°C (38°F) | 3°C (37°F) | 3°C (37°F) | 4°C (40°F) | 4°C (40°F) | 5°C (41°F) | 4°C (38°F) | 8°C (46°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 59% | 58% | 59% | 55% | 51% | 51% | 54% | 60% |
| Barometric pressure | 1021 hPa | 1021 hPa | 1022 hPa | 1023 hPa | 1021 hPa | 1020 hPa | 1021 hPa | 1021 hPa |
| Cloud cover | 2% | 2% | 2% | 0% | 0% | 0% | 0% | 4% |
| Heat index | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 8°C (46°F) | 8°C (47°F) | 9°C (48°F) | 8°C (46°F) | 11°C (51°F) |
| Dew point | 0°C (32°F) | -0°C (31°F) | -1°C (31°F) | -0°C (31°F) | -1°C (30°F) | -1°C (30°F) | -1°C (30°F) | 3°C (38°F) |
| Wind | ||||||||
| Speed | 34km/h (21mph) | 31km/h (19mph) | 28km/h (18mph) | 27km/h (17mph) | 30km/h (19mph) | 30km/h (18mph) | 27km/h (17mph) | 29km/h (18mph) |
| Gusts | 43km/h (27mph) | 41km/h (25mph) | 38km/h (24mph) | 33km/h (20mph) | 35km/h (22mph) | 34km/h (21mph) | 33km/h (21mph) | 42km/h (26mph) |
| Direction | 311° NW | 308° NW | 307° NW | 304° WNW | 295° WNW | 295° WNW | 295° WNW | 292° WNW |
| Wind chill | 3°C (38°F) | 3°C (37°F) | 3°C (37°F) | 4°C (40°F) | 4°C (40°F) | 5°C (41°F) | 4°C (38°F) | 8°C (46°F) |
| Waves | ||||||||
| Height | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 0.9m (3.1ft) | 0.9m (3.1ft) | 0.9m (3.1ft) | 1.1m (3.8ft) |
| Direction | 312° NW | 312° NW | 312° NW | 313° NW | 307° NW | 302° WNW | 298° WNW | 291° WNW |
| Period | 8.9 sec. | 9.5 sec. | 9.7 sec. | 9.3 sec. | 9.3 sec. | 8.5 sec. | 8.3 sec. | 8.2 sec. |
| Significant height | 1.5m (4.9ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.2m (3.9ft) | 1.4m (4.6ft) |
| 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 06:50 and will set at 16:41 on the beach(es) of Hamamatsu. The outside temperature will be a high of 56°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 19.3mph km/h (with gusts up to 29.2mph). 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 | 10°C (50°F) | 10°C (49°F) | 10°C (49°F) | 11°C (51°F) | 11°C (53°F) | 13°C (55°F) | 11°C (53°F) | 12°C (54°F) |
| Perceived temperature | 7°C (45°F) | 7°C (44°F) | 6°C (43°F) | 8°C (46°F) | 8°C (47°F) | 10°C (50°F) | 9°C (49°F) | 10°C (50°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 63% | 70% | 70% | 67% | 58% | 52% | 54% | 59% |
| Barometric pressure | 1021 hPa | 1020 hPa | 1020 hPa | 1021 hPa | 1019 hPa | 1019 hPa | 1020 hPa | 1020 hPa |
| Cloud cover | 0% | 0% | 3% | 3% | 3% | 6% | 7% | 15% |
| Heat index | 10°C (50°F) | 10°C (49°F) | 10°C (49°F) | 11°C (51°F) | 11°C (53°F) | 13°C (55°F) | 11°C (53°F) | 12°C (54°F) |
| Dew point | 3°C (38°F) | 4°C (40°F) | 4°C (40°F) | 5°C (40°F) | 3°C (38°F) | 3°C (38°F) | 2°C (36°F) | 4°C (40°F) |
| Wind | ||||||||
| Speed | 25km/h (16mph) | 24km/h (15mph) | 27km/h (17mph) | 24km/h (15mph) | 31km/h (19mph) | 29km/h (18mph) | 19km/h (12mph) | 23km/h (14mph) |
| Gusts | 36km/h (22mph) | 34km/h (21mph) | 38km/h (24mph) | 32km/h (20mph) | 47km/h (29mph) | 47km/h (29mph) | 36km/h (22mph) | 34km/h (21mph) |
| Direction | 304° NW | 302° WNW | 295° WNW | 299° WNW | 294° WNW | 295° WNW | 294° WNW | 298° WNW |
| Wind chill | 7°C (45°F) | 7°C (44°F) | 6°C (43°F) | 8°C (46°F) | 8°C (47°F) | 10°C (50°F) | 9°C (49°F) | 10°C (50°F) |
| Waves | ||||||||
| Height | 1.2m (4.1ft) | 1.3m (4.2ft) | 1.2m (4.0ft) | 1.1m (3.5ft) | 1.0m (3.2ft) | 0.8m (2.6ft) | 0.6m (2.0ft) | 0.5m (1.8ft) |
| Direction | 291° WNW | 292° WNW | 292° WNW | 289° WNW | 290° WNW | 289° WNW | 291° WNW | 112° ESE |
| Period | 8.1 sec. | 8.0 sec. | 7.9 sec. | 7.7 sec. | 7.6 sec. | 7.5 sec. | 4.4 sec. | 4.6 sec. |
| Significant height | 1.4m (4.6ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.6m (2ft) |
| 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 06:51 and will set at 16:42 on the beach(es) of Hamamatsu. The outside temperature will be a high of 56°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 13.7mph km/h (with gusts up to 20.5mph). Wave height will be up to 1.6ft 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 (51°F) | 10°C (50°F) | 10°C (50°F) | 10°C (49°F) | 10°C (50°F) | 13°C (55°F) | 12°C (54°F) |
| Perceived temperature | 9°C (48°F) | 8°C (47°F) | 7°C (45°F) | 8°C (47°F) | 9°C (49°F) | 9°C (49°F) | 11°C (52°F) | 11°C (52°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 63% | 70% | 69% | 62% | 57% | 58% | 63% | 64% |
| Barometric pressure | 1021 hPa | 1022 hPa | 1023 hPa | 1025 hPa | 1024 hPa | 1024 hPa | 1026 hPa | 1027 hPa |
| Cloud cover | 11% | 10% | 0% | 0% | 0% | 0% | 60% | 42% |
| Heat index | 11°C (52°F) | 11°C (51°F) | 10°C (50°F) | 10°C (50°F) | 10°C (49°F) | 10°C (50°F) | 13°C (55°F) | 12°C (54°F) |
| Dew point | 4°C (40°F) | 5°C (42°F) | 5°C (41°F) | 3°C (38°F) | 2°C (35°F) | 2°C (36°F) | 6°C (42°F) | 6°C (42°F) |
| Wind | ||||||||
| Speed | 21km/h (13mph) | 22km/h (14mph) | 20km/h (13mph) | 14km/h (9mph) | 5km/h (3mph) | 6km/h (4mph) | 14km/h (9mph) | 12km/h (7mph) |
| Gusts | 31km/h (19mph) | 33km/h (20mph) | 31km/h (19mph) | 18km/h (11mph) | 9km/h (6mph) | 14km/h (8mph) | 23km/h (14mph) | 17km/h (11mph) |
| Direction | 306° NW | 306° NW | 315° NW | 354° N | 28° NNE | 96° E | 118° ESE | 96° E |
| Wind chill | 9°C (48°F) | 8°C (47°F) | 7°C (45°F) | 8°C (47°F) | 9°C (49°F) | 9°C (49°F) | 11°C (52°F) | 11°C (52°F) |
| Waves | ||||||||
| Height | 0.5m (1.5ft) | 0.4m (1.5ft) | 0.4m (1.4ft) | 0.5m (1.5ft) | 0.4m (1.4ft) | 0.4m (1.4ft) | 0.5m (1.5ft) | 0.5m (1.6ft) |
| Direction | 113° ESE | 113° ESE | 113° ESE | 114° ESE | 115° ESE | 116° ESE | 121° ESE | 121° ESE |
| Period | 9.8 sec. | 9.5 sec. | 9.2 sec. | 9.2 sec. | 9.6 sec. | 9.7 sec. | 9.8 sec. | 4.4 sec. |
| Significant height | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.3m (1ft) | 0.3m (1ft) | 0.3m (1ft) | 0.4m (1.3ft) |
| 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 Friday 19 December 2025
On Friday 19 December 2025, the sun will rise at 06:52 and will set at 16:42 on the beach(es) of Hamamatsu. The outside temperature will be a high of 56°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 6.2mph km/h (with gusts up to 11.8mph). Wave height will be up to 2.6ft 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) | 11°C (51°F) | 10°C (50°F) | 11°C (53°F) | 11°C (52°F) | 11°C (52°F) | 10°C (49°F) | 13°C (55°F) |
| Perceived temperature | 11°C (51°F) | 9°C (49°F) | 9°C (49°F) | 11°C (51°F) | 11°C (51°F) | 10°C (50°F) | 9°C (49°F) | 13°C (55°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 65% | 68% | 66% | 64% | 60% | 61% | 65% | 68% |
| Barometric pressure | 1026 hPa | 1027 hPa | 1027 hPa | 1028 hPa | 1026 hPa | 1026 hPa | 1027 hPa | 1028 hPa |
| Cloud cover | 20% | 10% | 8% | 0% | 0% | 0% | 0% | 0% |
| Heat index | 12°C (53°F) | 11°C (51°F) | 10°C (50°F) | 11°C (53°F) | 11°C (52°F) | 11°C (52°F) | 10°C (49°F) | 13°C (55°F) |
| Dew point | 5°C (42°F) | 5°C (41°F) | 4°C (40°F) | 5°C (41°F) | 4°C (39°F) | 4°C (39°F) | 3°C (38°F) | 7°C (44°F) |
| Wind | ||||||||
| Speed | 10km/h (6mph) | 9km/h (6mph) | 8km/h (5mph) | 8km/h (5mph) | 7km/h (4mph) | 9km/h (6mph) | 5km/h (3mph) | 4km/h (3mph) |
| Gusts | 16km/h (10mph) | 15km/h (9mph) | 13km/h (8mph) | 11km/h (7mph) | 14km/h (8mph) | 19km/h (12mph) | 10km/h (6mph) | 7km/h (4mph) |
| Direction | 53° NE | 32° NNE | 2° N | 346° NNW | 257° WSW | 245° WSW | 248° WSW | 28° NNE |
| Wind chill | 11°C (51°F) | 9°C (49°F) | 9°C (49°F) | 11°C (51°F) | 11°C (51°F) | 10°C (50°F) | 9°C (49°F) | 13°C (55°F) |
| Waves | ||||||||
| Height | 0.5m (1.8ft) | 0.6m (1.9ft) | 0.6m (1.9ft) | 0.6m (1.9ft) | 0.6m (2.1ft) | 0.7m (2.3ft) | 0.7m (2.5ft) | 0.8m (2.5ft) |
| Direction | 122° ESE | 102° ESE | 101° ESE | 100° E | 102° ESE | 99° E | 99° E | 99° E |
| Period | 9.8 sec. | 9.8 sec. | 7.4 sec. | 7.8 sec. | 6.0 sec. | 6.1 sec. | 6.2 sec. | 6.3 sec. |
| Significant height | 0.6m (2ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.6m (2ft) | 0.7m (2.3ft) | 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 Saturday 20 December 2025
On Saturday 20 December 2025, the sun will rise at 06:52 and will set at 16:42 on the beach(es) of Hamamatsu. The outside temperature will be a high of 61°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 11.2mph km/h (with gusts up to 18.6mph). 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 | 12°C (54°F) | 12°C (53°F) | 12°C (53°F) | 13°C (56°F) | 16°C (60°F) | 16°C (61°F) | 16°C (61°F) | 16°C (61°F) |
| Perceived temperature | 12°C (53°F) | 10°C (51°F) | 10°C (51°F) | 12°C (54°F) | 16°C (60°F) | 16°C (61°F) | 16°C (61°F) | 16°C (61°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 71% | 71% | 66% | 62% | 58% | 64% | 73% | 79% |
| Barometric pressure | 1028 hPa | 1027 hPa | 1027 hPa | 1028 hPa | 1025 hPa | 1025 hPa | 1025 hPa | 1025 hPa |
| Cloud cover | 0% | 5% | 20% | 63% | 88% | 100% | 100% | 77% |
| Heat index | 12°C (54°F) | 12°C (53°F) | 12°C (53°F) | 13°C (56°F) | 16°C (60°F) | 16°C (61°F) | 16°C (61°F) | 16°C (61°F) |
| Dew point | 7°C (45°F) | 7°C (44°F) | 6°C (42°F) | 6°C (43°F) | 7°C (45°F) | 9°C (49°F) | 11°C (52°F) | 12°C (54°F) |
| Wind | ||||||||
| Speed | 9km/h (6mph) | 10km/h (6mph) | 11km/h (7mph) | 12km/h (8mph) | 13km/h (8mph) | 12km/h (8mph) | 17km/h (11mph) | 18km/h (11mph) |
| Gusts | 14km/h (9mph) | 17km/h (11mph) | 19km/h (12mph) | 19km/h (12mph) | 19km/h (12mph) | 18km/h (11mph) | 29km/h (18mph) | 30km/h (19mph) |
| Direction | 61° ENE | 50° NE | 36° NE | 53° NE | 83° E | 94° E | 82° E | 81° E |
| Wind chill | 12°C (53°F) | 10°C (51°F) | 10°C (51°F) | 12°C (54°F) | 16°C (60°F) | 16°C (61°F) | 16°C (61°F) | 16°C (61°F) |
| Waves | ||||||||
| Height | 0.8m (2.5ft) | 0.8m (2.6ft) | 0.8m (2.7ft) | 0.9m (3.0ft) | 1.0m (3.2ft) | 1.0m (3.3ft) | 1.0m (3.4ft) | 1.0m (3.4ft) |
| Direction | 100° E | 105° ESE | 106° ESE | 108° ESE | 110° ESE | 112° ESE | 113° ESE | 114° ESE |
| Period | 6.4 sec. | 6.5 sec. | 7.2 sec. | 7.4 sec. | 7.4 sec. | 7.4 sec. | 7.5 sec. | 7.5 sec. |
| Significant height | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.9m (3ft) | 0.9m (3ft) | 1.4m (4.6ft) | 1.0m (3.3ft) | 0.3m (1ft) | 0.3m (1ft) |
| 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 06:53 and will set at 16:43 on the beach(es) of Hamamatsu. The outside temperature will be a high of 63°F t and a low of 61°F. Precipitation is in the forecast (0.6in 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 20.5mph km/h (with gusts up to 31.7mph). 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 | 16°C (61°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (63°F) | 17°C (63°F) |
| Perceived temperature | 16°C (61°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (63°F) | 17°C (63°F) |
| Precipitation | 0in | 0in | 0.1in | 0.1in | 0.1in | 0.1in | 0.1in | 0.2in |
| Humidity | 81% | 80% | 83% | 94% | 96% | 96% | 95% | 98% |
| Barometric pressure | 1023 hPa | 1020 hPa | 1019 hPa | 1017 hPa | 1013 hPa | 1010 hPa | 1008 hPa | 1006 hPa |
| Cloud cover | 83% | 99% | 100% | 100% | 100% | 100% | 100% | 100% |
| Heat index | 16°C (61°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (63°F) | 17°C (63°F) |
| Dew point | 13°C (55°F) | 13°C (56°F) | 14°C (57°F) | 16°C (60°F) | 16°C (61°F) | 16°C (61°F) | 16°C (62°F) | 17°C (63°F) |
| Wind | ||||||||
| Speed | 19km/h (12mph) | 20km/h (12mph) | 20km/h (13mph) | 32km/h (20mph) | 33km/h (21mph) | 27km/h (17mph) | 33km/h (20mph) | 29km/h (18mph) |
| Gusts | 32km/h (20mph) | 34km/h (21mph) | 33km/h (20mph) | 37km/h (23mph) | 51km/h (32mph) | 43km/h (27mph) | 36km/h (22mph) | 47km/h (29mph) |
| Direction | 77° ENE | 87° E | 138° SE | 144° SE | 144° SE | 154° SSE | 176° S | 183° S |
| Wind chill | 16°C (61°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (62°F) | 17°C (63°F) | 17°C (63°F) |
| Waves | ||||||||
| Height | 1.0m (3.4ft) | 1.1m (3.5ft) | 1.2m (3.8ft) | 1.4m (4.6ft) | 2.1m (6.8ft) | 2.6m (8.4ft) | 2.9m (9.5ft) | 2.9m (9.5ft) |
| Direction | 116° ESE | 118° ESE | 122° ESE | 129° SE | 139° SE | 149° SSE | 158° SSE | 158° SSE |
| Period | 7.6 sec. | 7.6 sec. | 7.7 sec. | 11.2 sec. | 15.4 sec. | 14.9 sec. | 14.9 sec. | 8.2 sec. |
| Significant height | 1.1m (3.6ft) | 0.6m (2ft) | 1.3m (4.3ft) | 0.9m (3ft) | 0.7m (2.3ft) | 1.2m (3.9ft) | 1.0m (3.3ft) | 1.1m (3.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) | 16°C (60°F) |