Sea weather in Portland in the United States (USA) All the beach weather in Portland
All the essential weather information for enjoying the beach in Portland in the United States (USA), 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 Portland over the next 7 days?
Discover the best moment to go to the beach in Portland in the United States (USA) this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Portland. 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 | 41°F to 47°F | 8.7mph | not recommended | all the sea weather |
| Sunday 16 March 2025 | 41°F to 45°F | 3.1mph | discouraged | all the sea weather |
| Monday 17 March 2025 | 40°F to 47°F | 11.8mph | discouraged | all the sea weather |
| Tuesday 18 March 2025 | 41°F to 47°F | 10.6mph | discouraged | all the sea weather |
| Wednesday 19 March 2025 | 43°F to 52°F | 31.1mph | not recommended | all the sea weather |
| Thursday 20 March 2025 | 47°F to 49°F | 31.1mph | not recommended | all the sea weather |
| Friday 21 March 2025 | 47°F to 49°F | 16.8mph | not recommended | all the sea weather |
Sea Weather: Your daily and hourly sea weather in Portland
Sea weather on Saturday 15 March 2025
On Saturday 15 March 2025, the sun will rise at 07:23 and will set at 19:17 on the beach(es) of Portland. The outside temperature will be a high of 47°F t and a low of 41°F. Precipitation is in the forecast (0.2in 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 28mph km/h (with gusts up to 37.3mph). Wave height will be up to 14.4ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition |  | | |  | | |  | |
| Outside temperature | 8°C (47°F) | 8°C (46°F) | 8°C (46°F) | 8°C (47°F) | 8°C (46°F) | 8°C (47°F) | 6°C (42°F) | 5°C (41°F) |
| Perceived temperature | 3°C (38°F) | 3°C (37°F) | 3°C (37°F) | 4°C (39°F) | 4°C (39°F) | 5°C (41°F) | 4°C (39°F) | 2°C (35°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0.1in | 0in |
| Humidity | 88% | 82% | 76% | 81% | 82% | 78% | 86% | 90% |
| Barometric pressure | 1000 hPa | 1004 hPa | 1006 hPa | 1006 hPa | 1008 hPa | 1006 hPa | 1004 hPa | 1002 hPa |
| Cloud cover | 100% | 59% | 68% | 99% | 100% | 82% | 100% | 100% |
| Heat index | 8°C (47°F) | 8°C (46°F) | 8°C (46°F) | 8°C (47°F) | 8°C (46°F) | 8°C (47°F) | 6°C (42°F) | 5°C (41°F) |
| Dew point | 6°C (43°F) | 5°C (41°F) | 4°C (39°F) | 5°C (41°F) | 5°C (41°F) | 5°C (41°F) | 4°C (38°F) | 3°C (38°F) |
| Wind | ||||||||
| Speed | 44km/h (27mph) | 45km/h (28mph) | 40km/h (25mph) | 34km/h (21mph) | 32km/h (20mph) | 25km/h (16mph) | 8km/h (5mph) | 14km/h (9mph) |
| Gusts | 60km/h (37mph) | 48km/h (30mph) | 56km/h (35mph) | 41km/h (26mph) | 48km/h (30mph) | 40km/h (25mph) | 12km/h (7mph) | 19km/h (12mph) |
| Direction | 248° WSW | 250° WSW | 242° WSW | 229° SW | 226° SW | 225° SW | 156° SSE | 36° NE |
| Wind chill | 3°C (38°F) | 3°C (37°F) | 3°C (37°F) | 4°C (39°F) | 4°C (39°F) | 5°C (41°F) | 4°C (39°F) | 2°C (35°F) |
| Waves | ||||||||
| Height | 3.5m (11.6ft) | 4.3m (14.2ft) | 4.4m (14.3ft) | 4.0m (13.1ft) | 3.7m (12.1ft) | 3.4m (11.2ft) | 3.2m (10.5ft) | 3.0m (9.7ft) |
| Direction | 263° W | 264° W | 266° W | 268° W | 271° W | 273° W | 274° W | 276° W |
| Period | 21.8 sec. | 12.4 sec. | 20.5 sec. | 19.7 sec. | 12.3 sec. | 12.1 sec. | 12.0 sec. | 11.9 sec. |
| Significant height | 1.7m (5.6ft) | 1.9m (6.2ft) | 1.6m (5.2ft) | 1.4m (4.6ft) | 1.3m (4.3ft) | 1.0m (3.3ft) | 0.5m (1.6ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) |
Sea weather on Sunday 16 March 2025
On Sunday 16 March 2025, the sun will rise at 07:21 and will set at 19:19 on the beach(es) of Portland. The outside temperature will be a high of 45°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 7.5mph km/h (with gusts up to 9.9mph). 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 | 5°C (41°F) | 6°C (42°F) | 7°C (44°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 6°C (44°F) |
| Perceived temperature | 2°C (36°F) | 4°C (39°F) | 5°C (41°F) | 7°C (44°F) | 6°C (43°F) | 5°C (41°F) | 6°C (42°F) | 6°C (42°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 93% | 86% | 81% | 76% | 75% | 74% | 73% | 77% |
| Barometric pressure | 1002 hPa | 1003 hPa | 1003 hPa | 1004 hPa | 1005 hPa | 1005 hPa | 1007 hPa | 1009 hPa |
| Cloud cover | 100% | 100% | 100% | 100% | 78% | 72% | 88% | 51% |
| Heat index | 5°C (41°F) | 6°C (42°F) | 7°C (44°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (44°F) | 6°C (44°F) |
| Dew point | 4°C (39°F) | 4°C (39°F) | 4°C (38°F) | 3°C (38°F) | 3°C (37°F) | 3°C (37°F) | 2°C (36°F) | 3°C (37°F) |
| Wind | ||||||||
| Speed | 12km/h (7mph) | 9km/h (6mph) | 8km/h (5mph) | 4km/h (3mph) | 6km/h (4mph) | 9km/h (6mph) | 6km/h (4mph) | 5km/h (3mph) |
| Gusts | 16km/h (10mph) | 13km/h (8mph) | 12km/h (7mph) | 6km/h (4mph) | 9km/h (5mph) | 14km/h (9mph) | 11km/h (7mph) | 9km/h (5mph) |
| Direction | 13° NNE | 304° NW | 275° W | 59° ENE | 224° SW | 224° SW | 263° W | 103° ESE |
| Wind chill | 2°C (36°F) | 4°C (39°F) | 5°C (41°F) | 7°C (44°F) | 6°C (43°F) | 5°C (41°F) | 6°C (42°F) | 6°C (42°F) |
| Waves | ||||||||
| Height | 3.2m (10.4ft) | 3.1m (10.1ft) | 3.0m (10.0ft) | 3.0m (9.8ft) | 2.9m (9.5ft) | 2.8m (9.2ft) | 2.7m (8.9ft) | 2.6m (8.6ft) |
| Direction | 276° W | 277° W | 281° W | 280° W | 280° W | 280° W | 280° W | 280° W |
| Period | 12.0 sec. | 12.1 sec. | 12.5 sec. | 15.4 sec. | 15.1 sec. | 14.5 sec. | 14.3 sec. | 14.2 sec. |
| Significant height | 0.5m (1.6ft) | 0.6m (2ft) | 0.2m (0.7ft) | 0.1m (0.3ft) | 0.3m (1ft) | 0.3m (1ft) | 0.2m (0.7ft) | 0.3m (1ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) |
Sea weather on Monday 17 March 2025
On Monday 17 March 2025, the sun will rise at 07:19 and will set at 19:20 on the beach(es) of Portland. The outside temperature will be a high of 47°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 13.7mph km/h (with gusts up to 21.1mph). 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 | 5°C (41°F) | 5°C (40°F) | 4°C (40°F) | 6°C (42°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) | 7°C (44°F) |
| Perceived temperature | 3°C (38°F) | 3°C (37°F) | 2°C (36°F) | 6°C (42°F) | 6°C (42°F) | 4°C (40°F) | 3°C (38°F) | 3°C (38°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 83% | 80% | 77% | 75% | 68% | 66% | 74% | 70% |
| Barometric pressure | 1009 hPa | 1011 hPa | 1011 hPa | 1014 hPa | 1016 hPa | 1018 hPa | 1019 hPa | 1021 hPa |
| Cloud cover | 28% | 22% | 38% | 66% | 70% | 85% | 59% | 83% |
| Heat index | 5°C (41°F) | 5°C (40°F) | 4°C (40°F) | 6°C (42°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) | 7°C (44°F) |
| Dew point | 3°C (37°F) | 1°C (35°F) | 1°C (33°F) | 2°C (35°F) | 2°C (36°F) | 2°C (36°F) | 3°C (37°F) | 2°C (35°F) |
| Wind | ||||||||
| Speed | 8km/h (5mph) | 8km/h (5mph) | 7km/h (4mph) | 3km/h (2mph) | 14km/h (9mph) | 22km/h (14mph) | 21km/h (13mph) | 19km/h (12mph) |
| Gusts | 14km/h (9mph) | 14km/h (9mph) | 12km/h (8mph) | 4km/h (2mph) | 19km/h (12mph) | 33km/h (20mph) | 34km/h (21mph) | 29km/h (18mph) |
| Direction | 81° E | 75° ENE | 59° ENE | 162° SSE | 293° WNW | 296° WNW | 304° WNW | 307° NW |
| Wind chill | 3°C (38°F) | 3°C (37°F) | 2°C (36°F) | 6°C (42°F) | 6°C (42°F) | 4°C (40°F) | 3°C (38°F) | 3°C (38°F) |
| Waves | ||||||||
| Height | 2.5m (8.2ft) | 2.4m (7.9ft) | 2.3m (7.6ft) | 2.2m (7.4ft) | 2.2m (7.2ft) | 2.2m (7.3ft) | 2.3m (7.7ft) | 2.4m (8.0ft) |
| Direction | 280° W | 280° W | 280° W | 279° W | 280° W | 279° W | 278° W | 278° W |
| Period | 13.9 sec. | 13.5 sec. | 13.3 sec. | 13.2 sec. | 12.8 sec. | 9.2 sec. | 9.2 sec. | 9.2 sec. |
| Significant height | 0.1m (0.3ft) | 0.2m (0.7ft) | 0.3m (1ft) | 0.3m (1ft) | 0.8m (2.6ft) | 1.6m (5.2ft) | 1.6m (5.2ft) | 1.5m (4.9ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) |
Sea weather on Tuesday 18 March 2025
On Tuesday 18 March 2025, the sun will rise at 07:17 and will set at 19:21 on the beach(es) of Portland. 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 18.6mph km/h (with gusts up to 26.7mph). Wave height will be up to 7.9ft today.
| 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | |
| Weather | ||||||||
| Sky condition | | | | | | | | |
| Outside temperature | 7°C (44°F) | 6°C (44°F) | 6°C (42°F) | 6°C (44°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) |
| Perceived temperature | 4°C (39°F) | 5°C (42°F) | 3°C (37°F) | 3°C (37°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 3°C (38°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 71% | 73% | 85% | 83% | 77% | 80% | 81% | 82% |
| Barometric pressure | 1023 hPa | 1024 hPa | 1025 hPa | 1027 hPa | 1028 hPa | 1027 hPa | 1027 hPa | 1026 hPa |
| Cloud cover | 70% | 73% | 91% | 87% | 81% | 65% | 74% | 48% |
| Heat index | 7°C (44°F) | 6°C (44°F) | 6°C (42°F) | 6°C (44°F) | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 7°C (44°F) |
| Dew point | 2°C (35°F) | 2°C (35°F) | 3°C (38°F) | 4°C (39°F) | 4°C (39°F) | 5°C (40°F) | 4°C (40°F) | 4°C (39°F) |
| Wind | ||||||||
| Speed | 14km/h (9mph) | 6km/h (4mph) | 14km/h (9mph) | 18km/h (11mph) | 24km/h (15mph) | 30km/h (19mph) | 27km/h (17mph) | 17km/h (11mph) |
| Gusts | 21km/h (13mph) | 9km/h (6mph) | 19km/h (12mph) | 25km/h (15mph) | 35km/h (22mph) | 42km/h (26mph) | 43km/h (27mph) | 30km/h (18mph) |
| Direction | 288° WNW | 275° W | 146° SE | 160° SSE | 187° S | 190° S | 179° S | 135° SE |
| Wind chill | 4°C (39°F) | 5°C (42°F) | 3°C (37°F) | 3°C (37°F) | 4°C (39°F) | 4°C (39°F) | 4°C (39°F) | 3°C (38°F) |
| Waves | ||||||||
| Height | 2.4m (7.8ft) | 2.3m (7.5ft) | 2.3m (7.5ft) | 2.2m (7.3ft) | 2.1m (7.0ft) | 2.0m (6.7ft) | 1.9m (6.2ft) | 1.7m (5.6ft) |
| Direction | 277° W | 267° W | 269° W | 270° W | 271° W | 272° W | 273° W | 274° W |
| Period | 14.5 sec. | 11.3 sec. | 13.4 sec. | 12.8 sec. | 12.5 sec. | 12.1 sec. | 11.8 sec. | 11.6 sec. |
| Significant height | 1.5m (4.9ft) | 0.6m (2ft) | 0.5m (1.6ft) | 0.4m (1.3ft) | 0.6m (2ft) | 0.9m (3ft) | 0.7m (2.3ft) | 0.4m (1.3ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) |
Sea weather on Wednesday 19 March 2025
On Wednesday 19 March 2025, the sun will rise at 07:15 and will set at 19:23 on the beach(es) of Portland. The outside temperature will be a high of 52°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! Be careful, the sea will be generally rough with a wind speed of up to 31.1mph km/h (with gusts up to 34.2mph). 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 | 6°C (43°F) | 6°C (43°F) | 6°C (43°F) | 7°C (45°F) | 11°C (51°F) | 11°C (51°F) | 8°C (47°F) | 8°C (46°F) |
| Perceived temperature | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 4°C (40°F) | 8°C (47°F) | 8°C (46°F) | 3°C (38°F) | 2°C (36°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 84% | 84% | 83% | 76% | 58% | 61% | 79% | 83% |
| Barometric pressure | 1024 hPa | 1022 hPa | 1019 hPa | 1016 hPa | 1012 hPa | 1008 hPa | 1006 hPa | 1010 hPa |
| Cloud cover | 69% | 100% | 86% | 100% | 95% | 100% | 100% | 100% |
| Heat index | 6°C (43°F) | 6°C (43°F) | 6°C (43°F) | 7°C (45°F) | 11°C (51°F) | 11°C (51°F) | 8°C (47°F) | 8°C (46°F) |
| Dew point | 4°C (38°F) | 3°C (38°F) | 3°C (38°F) | 4°C (38°F) | 3°C (37°F) | 4°C (38°F) | 5°C (40°F) | 5°C (41°F) |
| Wind | ||||||||
| Speed | 17km/h (10mph) | 17km/h (11mph) | 19km/h (12mph) | 19km/h (12mph) | 19km/h (12mph) | 24km/h (15mph) | 40km/h (25mph) | 50km/h (31mph) |
| Gusts | 29km/h (18mph) | 28km/h (18mph) | 36km/h (22mph) | 32km/h (20mph) | 30km/h (19mph) | 39km/h (24mph) | 47km/h (29mph) | 55km/h (34mph) |
| Direction | 111° ESE | 105° ESE | 104° ESE | 104° ESE | 132° SE | 127° SE | 146° SE | 235° SW |
| Wind chill | 3°C (37°F) | 3°C (37°F) | 3°C (37°F) | 4°C (40°F) | 8°C (47°F) | 8°C (46°F) | 3°C (38°F) | 2°C (36°F) |
| Waves | ||||||||
| Height | 1.5m (5.1ft) | 1.4m (4.7ft) | 1.3m (4.4ft) | 1.3m (4.3ft) | 1.4m (4.6ft) | 1.7m (5.4ft) | 2.4m (7.8ft) | 2.5m (8.3ft) |
| Direction | 276° W | 277° W | 277° W | 278° W | 254° WSW | 241° WSW | 238° WSW | 243° WSW |
| Period | 11.3 sec. | 11.0 sec. | 10.8 sec. | 7.7 sec. | 8.2 sec. | 9.3 sec. | 13.2 sec. | 11.4 sec. |
| Significant height | 0.4m (1.3ft) | 0.4m (1.3ft) | 0.5m (1.6ft) | 1.4m (4.6ft) | 0.5m (1.6ft) | 0.5m (1.6ft) | 1.2m (3.9ft) | 0.6m (2ft) |
| Sea water temperature | ||||||||
| Water temperature | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) |
Sea weather on Thursday 20 March 2025
On Thursday 20 March 2025, the sun will rise at 07:13 and will set at 19:24 on the beach(es) of Portland. The outside temperature will be a high of 49°F t and a low of 47°F. Precipitation is in the forecast (0.2in 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 31.1mph km/h (with gusts up to 38.5mph). Wave height will be up to 10.8ft 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) | 8°C (46°F) | 8°C (46°F) | 8°C (47°F) | 8°C (47°F) | 9°C (48°F) | 8°C (46°F) | 8°C (46°F) |
| Perceived temperature | 3°C (37°F) | 3°C (37°F) | 3°C (38°F) | 4°C (39°F) | 4°C (40°F) | 4°C (40°F) | 3°C (38°F) | 3°C (37°F) |
| Precipitation | 0in | 0in | 0in | 0in | 0in | 0in | 0in | 0.1in |
| Humidity | 78% | 77% | 78% | 80% | 83% | 82% | 87% | 91% |
| Barometric pressure | 1014 hPa | 1016 hPa | 1017 hPa | 1018 hPa | 1018 hPa | 1018 hPa | 1016 hPa | 1014 hPa |
| Cloud cover | 76% | 100% | 63% | 81% | 57% | 90% | 100% | 100% |
| Heat index | 8°C (46°F) | 8°C (46°F) | 8°C (46°F) | 8°C (47°F) | 8°C (47°F) | 9°C (48°F) | 8°C (46°F) | 8°C (46°F) |
| Dew point | 4°C (40°F) | 4°C (39°F) | 4°C (39°F) | 5°C (41°F) | 6°C (42°F) | 6°C (42°F) | 6°C (43°F) | 7°C (44°F) |
| Wind | ||||||||
| Speed | 45km/h (28mph) | 39km/h (24mph) | 35km/h (22mph) | 36km/h (22mph) | 34km/h (21mph) | 36km/h (22mph) | 42km/h (26mph) | 50km/h (31mph) |
| Gusts | 62km/h (39mph) | 57km/h (35mph) | 51km/h (32mph) | 39km/h (24mph) | 45km/h (28mph) | 45km/h (28mph) | 48km/h (30mph) | 53km/h (33mph) |
| Direction | 228° SW | 224° SW | 224° SW | 212° SSW | 205° SSW | 197° SSW | 190° S | 184° S |
| Wind chill | 3°C (37°F) | 3°C (37°F) | 3°C (38°F) | 4°C (39°F) | 4°C (40°F) | 4°C (40°F) | 3°C (38°F) | 3°C (37°F) |
| Waves | ||||||||
| Height | 2.5m (8.0ft) | 2.5m (8.2ft) | 2.6m (8.5ft) | 2.6m (8.4ft) | 2.6m (8.5ft) | 2.8m (9.2ft) | 2.9m (9.5ft) | 3.3m (10.8ft) |
| Direction | 244° WSW | 249° WSW | 254° WSW | 256° WSW | 265° W | 269° W | 270° W | 271° W |
| Period | 10.4 sec. | 10.3 sec. | 10.0 sec. | 9.9 sec. | 10.0 sec. | 11.3 sec. | 12.2 sec. | 11.7 sec. |
| Significant height | 0.6m (2ft) | 0.9m (3ft) | 0.9m (3ft) | 1.0m (3.3ft) | 1.3m (4.3ft) | 1.1m (3.6ft) | 1.2m (3.9ft) | 1.4m (4.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 7°C (45°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) |
Sea weather on Friday 21 March 2025
On Friday 21 March 2025, the sun will rise at 07:11 and will set at 19:25 on the beach(es) of Portland. The outside temperature will be a high of 49°F t and a low of 47°F. Precipitation is in the forecast (0.3in 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 37.3mph km/h (with gusts up to 37.9mph). 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 | 8°C (47°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 8°C (47°F) | 8°C (46°F) | 8°C (47°F) |
| Perceived temperature | 3°C (37°F) | 3°C (38°F) | 4°C (39°F) | 5°C (42°F) | 5°C (42°F) | 5°C (41°F) | 4°C (40°F) | 4°C (40°F) |
| Precipitation | 0.1in | 0.1in | 0.1in | 0in | 0in | 0in | 0in | 0in |
| Humidity | 92% | 93% | 96% | 89% | 81% | 80% | 81% | 79% |
| Barometric pressure | 1013 hPa | 1012 hPa | 1011 hPa | 1011 hPa | 1013 hPa | 1013 hPa | 1014 hPa | 1015 hPa |
| Cloud cover | 100% | 100% | 100% | 63% | 28% | 37% | 40% | 78% |
| Heat index | 8°C (47°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 9°C (48°F) | 8°C (47°F) | 8°C (46°F) | 8°C (47°F) |
| Dew point | 7°C (45°F) | 8°C (46°F) | 8°C (47°F) | 7°C (45°F) | 6°C (42°F) | 5°C (41°F) | 5°C (41°F) | 5°C (40°F) |
| Wind | ||||||||
| Speed | 57km/h (35mph) | 60km/h (37mph) | 57km/h (35mph) | 33km/h (20mph) | 24km/h (15mph) | 25km/h (15mph) | 27km/h (17mph) | 27km/h (17mph) |
| Gusts | 58km/h (36mph) | 61km/h (38mph) | 57km/h (36mph) | 40km/h (25mph) | 36km/h (22mph) | 38km/h (24mph) | 43km/h (27mph) | 42km/h (26mph) |
| Direction | 184° S | 192° SSW | 202° SSW | 224° SW | 240° WSW | 236° WSW | 242° WSW | 246° WSW |
| Wind chill | 3°C (37°F) | 3°C (38°F) | 4°C (39°F) | 5°C (42°F) | 5°C (42°F) | 5°C (41°F) | 4°C (40°F) | 4°C (40°F) |
| Waves | ||||||||
| Height | 3.6m (11.8ft) | 3.4m (11.2ft) | 3.1m (10.2ft) | 2.8m (9.2ft) | 2.7m (8.9ft) | 2.7m (8.9ft) | 2.7m (8.9ft) | 2.6m (8.5ft) |
| Direction | 257° WSW | 250° WSW | 267° W | 276° W | 278° W | 280° W | 281° WNW | 279° W |
| Period | 10.2 sec. | 11.7 sec. | 12.4 sec. | 12.2 sec. | 12.1 sec. | 11.9 sec. | 11.7 sec. | 11.5 sec. |
| Significant height | 1.5m (4.9ft) | 0.9m (3ft) | 0.3m (1ft) | 0.2m (0.7ft) | 0.6m (2ft) | 0.7m (2.3ft) | 0.6m (2ft) | 0.5m (1.6ft) |
| Sea water temperature | ||||||||
| Water temperature | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) | 9°C (49°F) |