Sea weather in Isle of Portland in England All the beach weather in Isle of Portland

All the essential weather information for enjoying the beach in Isle of Portland 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 Isle of Portland over the next 7 days?

Discover the best moment to go to the beach in Isle of Portland in England this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Isle of Portland. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Monday 20 July 202658°F to 67°Frecommended
Tuesday 21 July 202659°F to 68°Frecommended
Wednesday 22 July 202659°F to 70°Frecommended
Thursday 23 July 202661°F to 68°Fdiscouraged
Friday 24 July 202661°F to 72°Frecommended
Saturday 25 July 202661°F to 70°Frecommended
Sunday 26 July 202659°F to 68°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Isle of Portland

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 05:21 and will set at 21:11 on the beach(es) of Isle of Portland. The outside temperature will be a high of 67°F t and a low of 58°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 8.7mph km/h (with gusts up to 16.8mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature15°C (59°F)14°C (58°F)15°C (58°F)19°C (65°F)19°C (67°F)18°C (65°F)17°C (63°F)16°C (61°F)
Perceived temperature14°C (58°F)13°C (56°F)14°C (57°F)19°C (65°F)19°C (67°F)18°C (65°F)17°C (63°F)16°C (61°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity62%82%76%46%44%49%52%67%
Barometric pressure1026 hPa1026 hPa1027 hPa1028 hPa1027 hPa1026 hPa1026 hPa1027 hPa
Cloud cover5%37%17%0%10%5%5%6%
Heat index15°C (59°F)14°C (58°F)15°C (58°F)19°C (65°F)19°C (67°F)18°C (65°F)17°C (63°F)16°C (61°F)
Dew point8°C (46°F)11°C (52°F)11°C (51°F)7°C (44°F)7°C (44°F)7°C (45°F)7°C (45°F)10°C (50°F)
Wind
Speed12km/h (7mph)13km/h (8mph)13km/h (8mph)14km/h (9mph)12km/h (8mph)12km/h (7mph)14km/h (9mph)10km/h (6mph)
Gusts24km/h (15mph)25km/h (15mph)19km/h (12mph)17km/h (11mph)17km/h (10mph)19km/h (12mph)27km/h (17mph)22km/h (14mph)
Direction 44°
NE
71°
ENE
55°
NE
68°
ENE
138°
SE
212°
SSW
227°
SW
249°
WSW
Wind chill14°C (58°F)13°C (56°F)14°C (57°F)19°C (65°F)19°C (67°F)18°C (65°F)17°C (63°F)16°C (61°F)
Waves
Height0.2m (0.8ft)0.2m (0.8ft)0.2m (0.8ft)0.2m (0.8ft)0.3m (1.1ft)0.3m (1.0ft)0.3m (0.9ft)0.2m (0.8ft)
Direction 234°
SW
186°
S
146°
SE
124°
SE
112°
ESE
109°
ESE
104°
ESE
105°
ESE
Period2.7 sec.2.7 sec.2.6 sec.4.7 sec.4.5 sec.3.9 sec.3.9 sec.3.8 sec.
Significant height0.4m (1.3ft)0.4m (1.3ft)0.3m (1ft)0.2m (0.7ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)
Sea water temperature
Water temperature15°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 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 05:22 and will set at 21:10 on the beach(es) of Isle of Portland. The outside temperature will be a high of 68°F t and a low of 59°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 20.5mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature16°C (60°F)15°C (59°F)16°C (61°F)19°C (67°F)20°C (67°F)20°C (68°F)19°C (65°F)17°C (62°F)
Perceived temperature16°C (60°F)15°C (59°F)16°C (61°F)19°C (67°F)20°C (67°F)20°C (68°F)19°C (65°F)17°C (62°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity70%73%72%59%58%60%64%79%
Barometric pressure1028 hPa1028 hPa1029 hPa1029 hPa1029 hPa1028 hPa1027 hPa1028 hPa
Cloud cover7%12%9%4%8%14%12%12%
Heat index16°C (60°F)15°C (59°F)16°C (61°F)19°C (67°F)20°C (67°F)20°C (68°F)19°C (65°F)17°C (62°F)
Dew point10°C (50°F)10°C (51°F)11°C (52°F)11°C (52°F)11°C (52°F)12°C (54°F)12°C (53°F)13°C (56°F)
Wind
Speed11km/h (7mph)7km/h (4mph)7km/h (4mph)7km/h (4mph)9km/h (6mph)15km/h (9mph)18km/h (11mph)14km/h (9mph)
Gusts21km/h (13mph)13km/h (8mph)11km/h (7mph)9km/h (6mph)13km/h (8mph)23km/h (14mph)33km/h (21mph)29km/h (18mph)
Direction 195°
SSW
140°
SE
69°
ENE
93°
E
204°
SSW
228°
SW
232°
SW
243°
WSW
Wind chill16°C (60°F)15°C (59°F)16°C (61°F)19°C (67°F)20°C (67°F)20°C (68°F)19°C (65°F)17°C (62°F)
Waves
Height0.2m (0.8ft)0.2m (0.7ft)0.2m (0.6ft)0.2m (0.7ft)0.3m (0.9ft)0.3m (0.9ft)0.3m (0.9ft)0.3m (1.0ft)
Direction 118°
ESE
235°
SW
240°
WSW
100°
E
101°
ESE
106°
ESE
106°
ESE
240°
WSW
Period3.6 sec.3.0 sec.2.5 sec.5.0 sec.4.4 sec.4.1 sec.3.9 sec.3.8 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.4m (1.3ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)
Sea water temperature
Water temperature15°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 Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 05:23 and will set at 21:09 on the beach(es) of Isle of Portland. The outside temperature will be a high of 70°F t and a low of 59°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 9.9mph km/h (with gusts up to 20.5mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature17°C (62°F)16°C (60°F)16°C (61°F)21°C (69°F)21°C (69°F)21°C (69°F)19°C (66°F)18°C (65°F)
Perceived temperature17°C (62°F)16°C (60°F)16°C (61°F)21°C (69°F)21°C (69°F)21°C (69°F)19°C (66°F)18°C (65°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%75%73%56%56%56%60%67%
Barometric pressure1027 hPa1026 hPa1026 hPa1025 hPa1025 hPa1023 hPa1022 hPa1023 hPa
Cloud cover13%7%8%2%5%6%2%10%
Heat index17°C (62°F)16°C (60°F)16°C (61°F)21°C (69°F)21°C (69°F)21°C (69°F)19°C (66°F)18°C (65°F)
Dew point13°C (56°F)11°C (53°F)11°C (52°F)12°C (53°F)11°C (52°F)12°C (53°F)11°C (52°F)12°C (53°F)
Wind
Speed8km/h (5mph)11km/h (7mph)13km/h (8mph)7km/h (4mph)12km/h (7mph)15km/h (10mph)16km/h (10mph)14km/h (9mph)
Gusts17km/h (10mph)23km/h (14mph)21km/h (13mph)10km/h (6mph)20km/h (13mph)30km/h (18mph)33km/h (21mph)29km/h (18mph)
Direction 271°
W

N
21°
NNE
18°
NNE
221°
SW
243°
WSW
255°
WSW
310°
NW
Wind chill17°C (62°F)16°C (60°F)16°C (61°F)21°C (69°F)21°C (69°F)21°C (69°F)19°C (66°F)18°C (65°F)
Waves
Height0.3m (1.0ft)0.2m (0.8ft)0.2m (0.6ft)0.1m (0.5ft)0.1m (0.4ft)0.2m (0.7ft)0.3m (1.0ft)0.2m (0.8ft)
Direction 238°
WSW
237°
WSW
234°
SW
231°
SW
236°
WSW
239°
WSW
247°
WSW
241°
WSW
Period3.5 sec.3.0 sec.2.8 sec.2.5 sec.4.3 sec.4.0 sec.1.8 sec.2.8 sec.
Significant height0.3m (1ft)0.1m (0.3ft)0.3m (1ft)0.1m (0.3ft)0.4m (1.3ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)
Sea water temperature
Water temperature15°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 23 July 2026

On Thursday 23 July 2026, the sun will rise at 05:25 and will set at 21:07 on the beach(es) of Isle of Portland. The outside temperature will be a high of 68°F t and a low of 61°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 13.1mph km/h (with gusts up to 22.4mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature17°C (63°F)16°C (62°F)17°C (63°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)17°C (62°F)
Perceived temperature17°C (63°F)16°C (62°F)17°C (63°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)17°C (62°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%89%88%72%70%68%67%79%
Barometric pressure1023 hPa1023 hPa1024 hPa1025 hPa1025 hPa1024 hPa1022 hPa1022 hPa
Cloud cover6%7%11%9%8%6%7%6%
Heat index17°C (63°F)16°C (62°F)17°C (63°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)17°C (62°F)
Dew point14°C (57°F)15°C (58°F)15°C (59°F)14°C (58°F)14°C (57°F)13°C (55°F)12°C (54°F)13°C (56°F)
Wind
Speed21km/h (13mph)15km/h (9mph)14km/h (9mph)15km/h (9mph)16km/h (10mph)15km/h (9mph)10km/h (6mph)4km/h (2mph)
Gusts36km/h (22mph)28km/h (17mph)22km/h (14mph)19km/h (12mph)23km/h (14mph)26km/h (16mph)21km/h (13mph)8km/h (5mph)
Direction 91°
E
103°
ESE
103°
ESE
133°
SE
151°
SSE
177°
S
234°
SW
223°
SW
Wind chill17°C (63°F)16°C (62°F)17°C (63°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)17°C (62°F)
Waves
Height0.3m (1.1ft)0.3m (1.1ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1.1ft)0.3m (1.1ft)0.3m (1.0ft)0.2m (0.8ft)
Direction 62°
ENE
78°
ENE
104°
ESE
100°
E
103°
ESE
108°
ESE
108°
ESE
111°
ESE
Period2.7 sec.2.8 sec.3.1 sec.4.3 sec.3.0 sec.2.7 sec.3.6 sec.1.7 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1ft)
Sea water temperature
Water temperature15°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 Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 05:26 and will set at 21:06 on the beach(es) of Isle of Portland. The outside temperature will be a high of 72°F t and a low of 61°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 8.7mph km/h (with gusts up to 17.4mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature17°C (62°F)17°C (62°F)18°C (64°F)21°C (69°F)22°C (71°F)21°C (70°F)19°C (67°F)18°C (65°F)
Perceived temperature17°C (62°F)17°C (62°F)18°C (64°F)21°C (69°F)22°C (71°F)21°C (70°F)19°C (67°F)18°C (65°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%77%72%60%56%56%58%64%
Barometric pressure1022 hPa1021 hPa1021 hPa1020 hPa1019 hPa1018 hPa1016 hPa1016 hPa
Cloud cover7%4%3%50%41%8%3%0%
Heat index17°C (62°F)17°C (62°F)18°C (64°F)21°C (69°F)24°C (76°F)21°C (70°F)19°C (67°F)18°C (65°F)
Dew point13°C (55°F)12°C (54°F)12°C (54°F)13°C (55°F)12°C (54°F)12°C (53°F)11°C (52°F)11°C (53°F)
Wind
Speed2km/h (1mph)3km/h (2mph)2km/h (1mph)4km/h (3mph)13km/h (8mph)14km/h (9mph)11km/h (7mph)9km/h (6mph)
Gusts5km/h (3mph)5km/h (3mph)3km/h (2mph)6km/h (4mph)20km/h (13mph)28km/h (17mph)23km/h (15mph)20km/h (12mph)
Direction 349°
N
147°
SSE
49°
NE
228°
SW
210°
SSW
215°
SW
248°
WSW
284°
WNW
Wind chill17°C (62°F)17°C (62°F)18°C (64°F)21°C (69°F)22°C (71°F)21°C (70°F)19°C (67°F)18°C (65°F)
Waves
Height0.2m (0.6ft)0.2m (0.6ft)0.2m (0.6ft)0.2m (0.7ft)0.3m (0.9ft)0.3m (0.9ft)0.3m (0.9ft)0.2m (0.8ft)
Direction 110°
ESE
116°
ESE
134°
SE
124°
SE
120°
ESE
120°
ESE
120°
ESE
122°
ESE
Period3.4 sec.1.6 sec.1.4 sec.1.4 sec.1.4 sec.1.4 sec.1.4 sec.3.2 sec.
Significant height0.3m (1ft)0.2m (0.7ft)0.3m (1ft)0.4m (1.3ft)0.4m (1.3ft)0.4m (1.3ft)0.3m (1ft)0.3m (1ft)
Sea water temperature
Water temperature15°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 Saturday 25 July 2026

On Saturday 25 July 2026, the sun will rise at 05:27 and will set at 21:05 on the beach(es) of Isle of Portland. The outside temperature will be a high of 70°F t and a low of 61°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 11.8mph km/h (with gusts up to 20.5mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature17°C (63°F)16°C (61°F)17°C (62°F)21°C (70°F)20°C (69°F)21°C (69°F)20°C (67°F)18°C (65°F)
Perceived temperature17°C (63°F)16°C (61°F)17°C (62°F)21°C (70°F)20°C (69°F)21°C (69°F)20°C (67°F)18°C (65°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity69%77%68%54%52%54%58%56%
Barometric pressure1016 hPa1015 hPa1015 hPa1014 hPa1013 hPa1013 hPa1012 hPa1013 hPa
Cloud cover0%0%0%0%0%2%3%0%
Heat index17°C (63°F)16°C (61°F)17°C (62°F)21°C (70°F)20°C (69°F)21°C (69°F)20°C (67°F)18°C (65°F)
Dew point11°C (53°F)12°C (53°F)11°C (52°F)11°C (52°F)10°C (50°F)11°C (52°F)11°C (52°F)9°C (49°F)
Wind
Speed10km/h (6mph)10km/h (6mph)9km/h (5mph)8km/h (5mph)15km/h (10mph)19km/h (12mph)14km/h (9mph)14km/h (9mph)
Gusts21km/h (13mph)22km/h (14mph)16km/h (10mph)11km/h (7mph)33km/h (20mph)26km/h (16mph)30km/h (19mph)30km/h (19mph)
Direction 345°
NNW

N

N
283°
WNW
244°
WSW
264°
W
280°
W
342°
NNW
Wind chill17°C (63°F)16°C (61°F)17°C (62°F)21°C (70°F)20°C (69°F)21°C (69°F)20°C (67°F)18°C (65°F)
Waves
Height0.2m (0.7ft)0.1m (0.5ft)0.1m (0.4ft)0.1m (0.3ft)0.3m (0.9ft)0.1m (0.5ft)0.2m (0.6ft)0.3m (0.9ft)
Direction 123°
ESE
124°
SE
215°
SW
215°
SW
216°
SW
216°
SW
219°
SW
250°
WSW
Period3.2 sec.3.0 sec.2.9 sec.2.8 sec.2.7 sec.2.2 sec.3.1 sec.3.6 sec.
Significant height0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)0.2m (0.7ft)0.4m (1.3ft)0.3m (1ft)0.4m (1.3ft)
Sea water temperature
Water temperature15°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 26 July 2026

On Sunday 26 July 2026, the sun will rise at 05:29 and will set at 21:03 on the beach(es) of Isle of Portland. The outside temperature will be a high of 68°F t and a low of 59°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 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature16°C (62°F)15°C (60°F)17°C (62°F)20°C (68°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)
Perceived temperature16°C (62°F)15°C (60°F)17°C (62°F)20°C (68°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity67%74%72%62%59%68%69%80%
Barometric pressure1014 hPa1014 hPa1014 hPa1015 hPa1014 hPa1014 hPa1014 hPa1014 hPa
Cloud cover0%0%0%2%0%3%4%4%
Heat index16°C (62°F)15°C (60°F)17°C (62°F)20°C (68°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)
Dew point10°C (51°F)11°C (51°F)11°C (53°F)12°C (54°F)12°C (53°F)13°C (56°F)13°C (55°F)15°C (59°F)
Wind
Speed12km/h (7mph)10km/h (6mph)5km/h (3mph)5km/h (3mph)13km/h (8mph)22km/h (14mph)16km/h (10mph)10km/h (6mph)
Gusts24km/h (15mph)22km/h (14mph)8km/h (5mph)8km/h (5mph)27km/h (17mph)25km/h (16mph)34km/h (21mph)21km/h (13mph)
Direction 340°
NNW

N
27°
NNE
250°
WSW
221°
SW
232°
SW
258°
WSW
331°
NNW
Wind chill16°C (62°F)15°C (60°F)17°C (62°F)20°C (68°F)20°C (67°F)19°C (67°F)19°C (66°F)18°C (65°F)
Waves
Height0.5m (1.8ft)0.5m (1.8ft)0.4m (1.4ft)0.6m (1.9ft)0.6m (2.0ft)0.6m (2.1ft)0.7m (2.4ft)0.8m (2.8ft)
Direction 279°
W
287°
WNW
275°
W
249°
WSW
240°
WSW
238°
WSW
246°
WSW
256°
WSW
Period1.6 sec.1.9 sec.1.9 sec.1.9 sec.5.3 sec.2.6 sec.2.7 sec.2.4 sec.
Significant height0.8m (2.6ft)0.9m (3ft)0.6m (2ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.9m (3ft)
Sea water temperature
Water temperature15°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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

Change units