Sea weather in Portsmouth in England All the beach weather in Portsmouth
All the essential weather information for enjoying the beach in Portsmouth in England, 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 Portsmouth over the next 7 days?
Discover the best moment to go to the beach in Portsmouth in England this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Portsmouth. 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 |
|---|---|---|---|---|
| Saturday 15 March 2025 | 32°F to 45°F | 13.7mph | discouraged | all the sea weather |
| Sunday 16 March 2025 | 34°F to 45°F | 9.9mph | discouraged | all the sea weather |
| Monday 17 March 2025 | 38°F to 47°F | 18.6mph | discouraged | all the sea weather |
| Tuesday 18 March 2025 | 41°F to 47°F | 11.8mph | discouraged | all the sea weather |
| Wednesday 19 March 2025 | 45°F to 52°F | 7.5mph | recommended | all the sea weather |
| Thursday 20 March 2025 | 49°F to 50°F | 14.9mph | discouraged | all the sea weather |
| Friday 21 March 2025 | 49°F to 50°F | 16.8mph | discouraged | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Portsmouth
Sea weather on Saturday 15 March 2025
On Saturday 15 March 2025, the sun will rise at 06:18 and will set at 18:09 on the beach(es) of Portsmouth. The outside temperature will be a high of 45°F t and a low of 32°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 18mph km/h (with gusts up to 26.7mph). Wave height will be up to 2.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | |  |  | | |  |
| Outside temperature | 3°C (38°F) | 3°C (37°F) | 2°C (35°F) | 4°C (39°F) | 6°C (43°F) | 7°C (44°F) | 1°C (34°F) | 2°C (36°F) |
| Perceived temperature | -1°C (30°F) | -2°C (28°F) | -3°C (26°F) | -1°C (30°F) | 2°C (35°F) | 2°C (36°F) | -4°C (24°F) | -3°C (27°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 82% | 84% | 88% | 72% | 52% | 50% | 63% | 73% |
| Barometric pressure | 1018 hPa | 1019 hPa | 1021 hPa | 1022 hPa | 1022 hPa | 1021 hPa | 1023 hPa | 1024 hPa |
| Cloud cover | 42% | 6% | 8% | 0% | 52% | 14% | 0% | 0% |
| Heat index | 3°C (38°F) | 3°C (37°F) | 2°C (35°F) | 4°C (39°F) | 6°C (43°F) | 7°C (44°F) | 1°C (34°F) | 2°C (36°F) |
| Dew point | 0°C (33°F) | 0°C (32°F) | 0°C (32°F) | -0°C (31°F) | -3°C (27°F) | -3°C (27°F) | -5°C (23°F) | -2°C (28°F) |
| Wind | ||||||||
| Speed | 19km/h (12mph) | 22km/h (13mph) | 24km/h (15mph) | 28km/h (17mph) | 29km/h (18mph) | 28km/h (17mph) | 25km/h (15mph) | 22km/h (13mph) |
| Gusts | 31km/h (19mph) | 35km/h (22mph) | 38km/h (23mph) | 36km/h (22mph) | 39km/h (24mph) | 43km/h (27mph) | 31km/h (19mph) | 37km/h (23mph) |
| Direction | 30° NNE | 27° NNE | 24° NNE | 32° NNE | 43° NE | 42° NE | 65° ENE | 49° NE |
| Wind chill | -1°C (30°F) | -2°C (28°F) | -3°C (26°F) | -1°C (30°F) | 2°C (35°F) | 2°C (36°F) | -4°C (24°F) | -3°C (27°F) |
| Waves | ||||||||
| Height | 0.6m (2.1ft) | 0.6m (2.0ft) | 0.6m (2.0ft) | 0.6m (2.0ft) | 0.7m (2.2ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.7m (2.5ft) |
| Direction | 86° E | 79° E | 41° NE | 56° NE | 54° NE | 53° NE | 82° E | 74° ENE |
| Period | 11.4 sec. | 3.8 sec. | 5.5 sec. | 13.3 sec. | 13.2 sec. | 12.4 sec. | 12.8 sec. | 6.6 sec. |
| Significant height | 0.7m (2.3ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.8m (2.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) |
Sea weather on Sunday 16 March 2025
On Sunday 16 March 2025, the sun will rise at 06:16 and will set at 18:11 on the beach(es) of Portsmouth. The outside temperature will be a high of 45°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! The sea will be generally calm, with a wind speed of up to 16.8mph km/h (with gusts up to 24.2mph). Wave height will be up to 2.3ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | |  | | | |
| Outside temperature | 2°C (35°F) | 2°C (35°F) | 1°C (34°F) | 4°C (40°F) | 7°C (44°F) | 7°C (45°F) | 6°C (43°F) | 6°C (42°F) |
| Perceived temperature | -3°C (26°F) | -4°C (25°F) | -4°C (24°F) | -1°C (31°F) | 2°C (36°F) | 3°C (38°F) | 3°C (37°F) | 2°C (36°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 79% | 80% | 78% | 73% | 65% | 59% | 70% | 81% |
| Barometric pressure | 1025 hPa | 1024 hPa | 1025 hPa | 1026 hPa | 1025 hPa | 1025 hPa | 1025 hPa | 1027 hPa |
| Cloud cover | 0% | 0% | 0% | 6% | 91% | 45% | 44% | 68% |
| Heat index | 2°C (35°F) | 2°C (35°F) | 1°C (34°F) | 4°C (40°F) | 7°C (44°F) | 7°C (45°F) | 6°C (43°F) | 6°C (42°F) |
| Dew point | -1°C (29°F) | -2°C (29°F) | -2°C (28°F) | -0°C (32°F) | 0°C (33°F) | -0°C (31°F) | 1°C (34°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 23km/h (15mph) | 25km/h (15mph) | 24km/h (15mph) | 26km/h (16mph) | 27km/h (17mph) | 26km/h (16mph) | 17km/h (11mph) | 16km/h (10mph) |
| Gusts | 37km/h (23mph) | 39km/h (24mph) | 39km/h (24mph) | 34km/h (21mph) | 37km/h (23mph) | 39km/h (24mph) | 30km/h (19mph) | 26km/h (16mph) |
| Direction | 27° NNE | 28° NNE | 29° NNE | 44° NE | 59° ENE | 51° NE | 56° ENE | 52° NE |
| Wind chill | -3°C (26°F) | -4°C (25°F) | -4°C (24°F) | -1°C (31°F) | 2°C (36°F) | 3°C (38°F) | 3°C (37°F) | 2°C (36°F) |
| Waves | ||||||||
| Height | 0.7m (2.4ft) | 0.6m (2.1ft) | 0.6m (1.9ft) | 0.6m (2.1ft) | 0.6m (2.0ft) | 0.6m (2.1ft) | 0.6m (2.0ft) | 0.5m (1.7ft) |
| Direction | 65° ENE | 61° ENE | 50° NE | 48° NE | 54° NE | 54° NE | 57° ENE | 66° ENE |
| Period | 6.5 sec. | 4.3 sec. | 4.3 sec. | 5.8 sec. | 5.7 sec. | 11.0 sec. | 10.8 sec. | 10.6 sec. |
| Significant height | 0.8m (2.6ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.8m (2.6ft) | 0.7m (2.3ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) |
Sea weather on Monday 17 March 2025
On Monday 17 March 2025, the sun will rise at 06:13 and will set at 18:13 on the beach(es) of Portsmouth. The outside temperature will be a high of 47°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 18.6mph km/h (with gusts up to 29.2mph). 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 | 6°C (42°F) | 4°C (40°F) | 3°C (38°F) | 5°C (41°F) | 7°C (45°F) | 8°C (46°F) | 5°C (41°F) | 5°C (41°F) |
| Perceived temperature | 2°C (36°F) | -0°C (32°F) | -2°C (29°F) | 0°C (32°F) | 3°C (38°F) | 4°C (40°F) | 1°C (34°F) | -0°C (32°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 88% | 90% | 95% | 81% | 71% | 71% | 79% | 86% |
| Barometric pressure | 1026 hPa | 1026 hPa | 1026 hPa | 1027 hPa | 1025 hPa | 1023 hPa | 1023 hPa | 1024 hPa |
| Cloud cover | 94% | 54% | 79% | 17% | 53% | 36% | 3% | 7% |
| Heat index | 6°C (42°F) | 4°C (40°F) | 3°C (38°F) | 5°C (41°F) | 7°C (45°F) | 8°C (46°F) | 5°C (41°F) | 5°C (41°F) |
| Dew point | 4°C (39°F) | 3°C (37°F) | 3°C (37°F) | 2°C (35°F) | 2°C (36°F) | 3°C (37°F) | 2°C (35°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 17km/h (11mph) | 24km/h (15mph) | 27km/h (17mph) | 27km/h (17mph) | 24km/h (15mph) | 25km/h (15mph) | 22km/h (14mph) | 30km/h (18mph) |
| Gusts | 25km/h (16mph) | 37km/h (23mph) | 39km/h (24mph) | 34km/h (21mph) | 32km/h (20mph) | 37km/h (23mph) | 29km/h (18mph) | 47km/h (29mph) |
| Direction | 46° NE | 45° NE | 52° NE | 60° ENE | 77° ENE | 99° E | 76° ENE | 64° ENE |
| Wind chill | 2°C (36°F) | -0°C (32°F) | -2°C (29°F) | 0°C (32°F) | 3°C (38°F) | 4°C (40°F) | 1°C (34°F) | -0°C (32°F) |
| Waves | ||||||||
| Height | 0.5m (1.5ft) | 0.5m (1.8ft) | 0.7m (2.2ft) | 0.7m (2.3ft) | 0.7m (2.2ft) | 0.7m (2.2ft) | 0.9m (3.0ft) | 1.0m (3.3ft) |
| Direction | 70° ENE | 57° ENE | 60° ENE | 54° NE | 85° E | 95° E | 104° ESE | 107° ESE |
| Period | 6.0 sec. | 9.9 sec. | 9.8 sec. | 9.8 sec. | 9.8 sec. | 9.8 sec. | 9.8 sec. | 18.3 sec. |
| Significant height | 0.6m (2ft) | 0.8m (2.6ft) | 0.9m (3ft) | 0.9m (3ft) | 0.8m (2.6ft) | 0.9m (3ft) | 1.2m (3.9ft) | 1.2m (3.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) |
Sea weather on Tuesday 18 March 2025
On Tuesday 18 March 2025, the sun will rise at 06:11 and will set at 18:14 on the beach(es) of Portsmouth. The outside temperature will be a high of 47°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 21.1mph km/h (with gusts up to 29.8mph). Wave height will be up to 3.9ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 6°C (42°F) | 6°C (43°F) | 5°C (41°F) | 7°C (44°F) | 5°C (41°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) |
| Perceived temperature | 1°C (34°F) | 1°C (34°F) | 0°C (32°F) | 2°C (35°F) | -0°C (32°F) | 3°C (37°F) | 4°C (38°F) | 4°C (39°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 84% | 85% | 82% | 75% | 69% | 67% | 74% | 80% |
| Barometric pressure | 1022 hPa | 1022 hPa | 1021 hPa | 1022 hPa | 1022 hPa | 1021 hPa | 1021 hPa | 1022 hPa |
| Cloud cover | 0% | 0% | 8% | 15% | 0% | 19% | 91% | 29% |
| Heat index | 6°C (42°F) | 6°C (43°F) | 5°C (41°F) | 7°C (44°F) | 5°C (41°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) |
| Dew point | 3°C (38°F) | 4°C (38°F) | 2°C (36°F) | 2°C (36°F) | -0°C (32°F) | 1°C (35°F) | 3°C (37°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 31km/h (19mph) | 29km/h (18mph) | 31km/h (19mph) | 34km/h (21mph) | 32km/h (20mph) | 30km/h (19mph) | 23km/h (14mph) | 19km/h (12mph) |
| Gusts | 47km/h (29mph) | 46km/h (29mph) | 48km/h (30mph) | 44km/h (28mph) | 37km/h (23mph) | 46km/h (28mph) | 25km/h (16mph) | 25km/h (15mph) |
| Direction | 79° E | 95° E | 94° E | 103° ESE | 102° ESE | 103° ESE | 91° E | 88° E |
| Wind chill | 1°C (34°F) | 1°C (34°F) | 0°C (32°F) | 2°C (35°F) | -0°C (32°F) | 3°C (37°F) | 4°C (38°F) | 4°C (39°F) |
| Waves | ||||||||
| Height | 1.0m (3.3ft) | 0.9m (3.1ft) | 1.0m (3.2ft) | 1.1m (3.7ft) | 1.2m (3.8ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 0.9m (3.0ft) |
| Direction | 110° ESE | 114° ESE | 117° ESE | 121° ESE | 121° ESE | 122° ESE | 117° ESE | 118° ESE |
| Period | 18.2 sec. | 17.6 sec. | 16.7 sec. | 16.0 sec. | 14.8 sec. | 14.6 sec. | 13.6 sec. | 13.6 sec. |
| Significant height | 1.0m (3.3ft) | 1.0m (3.3ft) | 1.0m (3.3ft) | 1.3m (4.3ft) | 1.2m (3.9ft) | 1.1m (3.6ft) | 1.0m (3.3ft) | 0.9m (3ft) |
| Sea water temperature | ||||||||
| Water temperature | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) |
Sea weather on Wednesday 19 March 2025
On Wednesday 19 March 2025, the sun will rise at 06:09 and will set at 18:16 on the beach(es) of Portsmouth. 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 10.6mph km/h (with gusts up to 17.4mph). Wave height will be up to 2.3ft 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) | 7°C (45°F) | 10°C (49°F) | 11°C (51°F) | 10°C (50°F) | 9°C (48°F) | 9°C (49°F) |
| Perceived temperature | 4°C (40°F) | 5°C (41°F) | 5°C (42°F) | 7°C (45°F) | 9°C (48°F) | 8°C (46°F) | 7°C (44°F) | 7°C (45°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 88% | 92% | 93% | 86% | 80% | 82% | 88% | 88% |
| Barometric pressure | 1022 hPa | 1022 hPa | 1023 hPa | 1024 hPa | 1024 hPa | 1023 hPa | 1023 hPa | 1024 hPa |
| Cloud cover | 24% | 34% | 38% | 32% | 50% | 52% | 52% | 100% |
| Heat index | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 10°C (49°F) | 11°C (51°F) | 10°C (50°F) | 9°C (48°F) | 9°C (49°F) |
| Dew point | 5°C (41°F) | 6°C (43°F) | 6°C (43°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 11km/h (7mph) | 11km/h (7mph) | 16km/h (10mph) | 15km/h (9mph) | 17km/h (11mph) | 13km/h (8mph) | 12km/h (8mph) |
| Gusts | 28km/h (17mph) | 23km/h (14mph) | 22km/h (14mph) | 25km/h (16mph) | 23km/h (15mph) | 28km/h (18mph) | 27km/h (17mph) | 25km/h (16mph) |
| Direction | 86° E | 86° E | 100° E | 114° ESE | 132° SE | 114° ESE | 107° ESE | 99° E |
| Wind chill | 4°C (40°F) | 5°C (41°F) | 5°C (42°F) | 7°C (45°F) | 9°C (48°F) | 8°C (46°F) | 7°C (44°F) | 7°C (45°F) |
| Waves | ||||||||
| Height | 0.7m (2.5ft) | 0.6m (2.1ft) | 0.6m (1.9ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.3m (1.1ft) | 0.3m (0.9ft) | 0.2m (0.7ft) |
| Direction | 118° ESE | 124° ESE | 125° SE | 131° SE | 129° SE | 136° SE | 209° SSW | 215° SW |
| Period | 13.4 sec. | 13.2 sec. | 12.4 sec. | 13.0 sec. | 11.9 sec. | 11.5 sec. | 3.5 sec. | 10.4 sec. |
| Significant height | 0.7m (2.3ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.3m (1ft) | 0.2m (0.7ft) | 0.3m (1ft) |
| Sea water temperature | ||||||||
| Water temperature | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) |
Sea weather on Thursday 20 March 2025
On Thursday 20 March 2025, the sun will rise at 06:07 and will set at 18:18 on the beach(es) of Portsmouth. The outside temperature will be a high of 50°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 16.2mph km/h (with gusts up to 24.9mph). 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 | 10°C (49°F) | 9°C (49°F) | 9°C (48°F) | 10°C (49°F) | 10°C (49°F) | 9°C (48°F) | 10°C (50°F) | 10°C (50°F) |
| Perceived temperature | 8°C (46°F) | 7°C (45°F) | 6°C (43°F) | 7°C (44°F) | 6°C (44°F) | 6°C (42°F) | 7°C (45°F) | 7°C (45°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 89% | 90% | 90% | 86% | 84% | 81% | 83% | 84% |
| Barometric pressure | 1023 hPa | 1022 hPa | 1021 hPa | 1020 hPa | 1019 hPa | 1017 hPa | 1014 hPa | 1013 hPa |
| Cloud cover | 94% | 83% | 38% | 20% | 29% | 3% | 100% | 19% |
| Heat index | 10°C (49°F) | 9°C (49°F) | 9°C (48°F) | 10°C (49°F) | 10°C (49°F) | 9°C (48°F) | 10°C (50°F) | 10°C (50°F) |
| Dew point | 8°C (46°F) | 8°C (46°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 6°C (43°F) | 7°C (45°F) | 8°C (46°F) |
| Wind | ||||||||
| Speed | 13km/h (8mph) | 13km/h (8mph) | 17km/h (11mph) | 25km/h (15mph) | 26km/h (16mph) | 26km/h (16mph) | 23km/h (15mph) | 24km/h (15mph) |
| Gusts | 27km/h (17mph) | 27km/h (17mph) | 34km/h (21mph) | 38km/h (23mph) | 40km/h (25mph) | 30km/h (19mph) | 29km/h (18mph) | 28km/h (18mph) |
| Direction | 103° ESE | 101° E | 107° ESE | 106° ESE | 116° ESE | 108° ESE | 101° E | 104° ESE |
| Wind chill | 8°C (46°F) | 7°C (45°F) | 6°C (43°F) | 7°C (44°F) | 6°C (44°F) | 6°C (42°F) | 7°C (45°F) | 7°C (45°F) |
| Waves | ||||||||
| Height | 0.2m (0.7ft) | 0.2m (0.7ft) | 0.2m (0.8ft) | 0.3m (0.9ft) | 0.3m (1.0ft) | 0.3m (1.0ft) | 0.4m (1.2ft) | 0.5m (1.6ft) |
| Direction | 209° SSW | 208° SSW | 210° SSW | 207° SSW | 204° SSW | 206° SSW | 205° SSW | 143° SE |
| Period | 10.1 sec. | 9.9 sec. | 12.2 sec. | 11.5 sec. | 10.9 sec. | 10.2 sec. | 10.1 sec. | 10.8 sec. |
| Significant height | 0.3m (1ft) | 0.2m (0.7ft) | 0.3m (1ft) | 0.3m (1ft) | 0.3m (1ft) | 0.3m (1ft) | 0.5m (1.6ft) | 0.6m (2ft) |
| Sea water temperature | ||||||||
| Water temperature | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) |
Sea weather on Friday 21 March 2025
On Friday 21 March 2025, the sun will rise at 06:05 and will set at 18:19 on the beach(es) of Portsmouth. The outside temperature will be a high of 50°F t and a low of 49°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 16.8mph km/h (with gusts up to 28mph). 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 | 10°C (50°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) |
| Perceived temperature | 7°C (44°F) | 6°C (44°F) | 7°C (44°F) | 7°C (44°F) | 6°C (43°F) | 6°C (42°F) | 6°C (43°F) | 5°C (42°F) |
| Precipitation | 0in | 0in | 0in | 0.1in | 0.1in | 0in | 0in | 0in |
| Humidity | 86% | 91% | 93% | 96% | 98% | 94% | 93% | 94% |
| Barometric pressure | 1011 hPa | 1009 hPa | 1009 hPa | 1008 hPa | 1006 hPa | 1006 hPa | 1005 hPa | 1005 hPa |
| Cloud cover | 52% | 65% | 100% | 100% | 100% | 77% | 93% | 83% |
| Heat index | 10°C (50°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (48°F) | 9°C (49°F) | 9°C (48°F) | 9°C (48°F) |
| Dew point | 8°C (46°F) | 8°C (46°F) | 8°C (47°F) | 9°C (48°F) | 9°C (48°F) | 8°C (47°F) | 8°C (47°F) | 8°C (47°F) |
| Wind | ||||||||
| Speed | 27km/h (17mph) | 22km/h (14mph) | 17km/h (11mph) | 18km/h (11mph) | 22km/h (14mph) | 27km/h (17mph) | 23km/h (14mph) | 27km/h (17mph) |
| Gusts | 29km/h (18mph) | 28km/h (17mph) | 29km/h (18mph) | 29km/h (18mph) | 35km/h (22mph) | 45km/h (28mph) | 40km/h (25mph) | 45km/h (28mph) |
| Direction | 116° ESE | 120° ESE | 145° SE | 136° SE | 167° SSE | 156° SSE | 152° SSE | 138° SE |
| Wind chill | 7°C (44°F) | 6°C (44°F) | 7°C (44°F) | 7°C (44°F) | 6°C (43°F) | 6°C (42°F) | 6°C (43°F) | 5°C (42°F) |
| Waves | ||||||||
| Height | 0.6m (1.9ft) | 0.6m (2.1ft) | 0.8m (2.5ft) | 0.9m (3.1ft) | 0.9m (3.1ft) | 0.8m (2.7ft) | 0.8m (2.5ft) | 0.8m (2.8ft) |
| Direction | 148° SSE | 152° SSE | 135° SE | 137° SE | 148° SSE | 149° SSE | 138° SE | 143° SE |
| Period | 10.7 sec. | 10.6 sec. | 10.2 sec. | 9.9 sec. | 9.8 sec. | 11.7 sec. | 11.2 sec. | 11.2 sec. |
| Significant height | 0.6m (2ft) | 0.7m (2.3ft) | 0.9m (3ft) | 1.1m (3.6ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.7m (2.3ft) | 1.0m (3.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) | 6°C (42°F) |