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. Our opinion
Saturday 15 March 202532°F to 45°Fdiscouraged
Sunday 16 March 202534°F to 45°Fdiscouraged
Monday 17 March 202538°F to 47°Fdiscouraged
Tuesday 18 March 202541°F to 47°Fdiscouraged
Wednesday 19 March 202545°F to 52°Frecommended
Thursday 20 March 202549°F to 50°Fdiscouraged
Friday 21 March 202549°F to 50°Fdiscouraged

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.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature3°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)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%84%88%72%52%50%63%73%
Barometric pressure1018 hPa1019 hPa1021 hPa1022 hPa1022 hPa1021 hPa1023 hPa1024 hPa
Cloud cover42%6%8%0%52%14%0%0%
Heat index3°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 point0°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
Speed19km/h (12mph)22km/h (13mph)24km/h (15mph)28km/h (17mph)29km/h (18mph)28km/h (17mph)25km/h (15mph)22km/h (13mph)
Gusts31km/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
Height0.6m (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
Period11.4 sec.3.8 sec.5.5 sec.13.3 sec.13.2 sec.12.4 sec.12.8 sec.6.6 sec.
Significant height0.7m (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 temperature8°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.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature2°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)
Precipitation0in0in0in0in0in0in0in0in
Humidity79%80%78%73%65%59%70%81%
Barometric pressure1025 hPa1024 hPa1025 hPa1026 hPa1025 hPa1025 hPa1025 hPa1027 hPa
Cloud cover0%0%0%6%91%45%44%68%
Heat index2°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
Speed23km/h (15mph)25km/h (15mph)24km/h (15mph)26km/h (16mph)27km/h (17mph)26km/h (16mph)17km/h (11mph)16km/h (10mph)
Gusts37km/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
Height0.7m (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
Period6.5 sec.4.3 sec.4.3 sec.5.8 sec.5.7 sec.11.0 sec.10.8 sec.10.6 sec.
Significant height0.8m (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 temperature8°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.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature6°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 temperature2°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)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%90%95%81%71%71%79%86%
Barometric pressure1026 hPa1026 hPa1026 hPa1027 hPa1025 hPa1023 hPa1023 hPa1024 hPa
Cloud cover94%54%79%17%53%36%3%7%
Heat index6°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 point4°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
Speed17km/h (11mph)24km/h (15mph)27km/h (17mph)27km/h (17mph)24km/h (15mph)25km/h (15mph)22km/h (14mph)30km/h (18mph)
Gusts25km/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 chill2°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
Height0.5m (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
Period6.0 sec.9.9 sec.9.8 sec.9.8 sec.9.8 sec.9.8 sec.9.8 sec.18.3 sec.
Significant height0.6m (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 temperature8°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.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature6°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 temperature1°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)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%85%82%75%69%67%74%80%
Barometric pressure1022 hPa1022 hPa1021 hPa1022 hPa1022 hPa1021 hPa1021 hPa1022 hPa
Cloud cover0%0%8%15%0%19%91%29%
Heat index6°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 point3°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
Speed31km/h (19mph)29km/h (18mph)31km/h (19mph)34km/h (21mph)32km/h (20mph)30km/h (19mph)23km/h (14mph)19km/h (12mph)
Gusts47km/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 chill1°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
Height1.0m (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
Period18.2 sec.17.6 sec.16.7 sec.16.0 sec.14.8 sec.14.6 sec.13.6 sec.13.6 sec.
Significant height1.0m (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 temperature6°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.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature7°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 temperature4°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)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%92%93%86%80%82%88%88%
Barometric pressure1022 hPa1022 hPa1023 hPa1024 hPa1024 hPa1023 hPa1023 hPa1024 hPa
Cloud cover24%34%38%32%50%52%52%100%
Heat index7°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 point5°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
Speed13km/h (8mph)11km/h (7mph)11km/h (7mph)16km/h (10mph)15km/h (9mph)17km/h (11mph)13km/h (8mph)12km/h (8mph)
Gusts28km/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 chill4°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
Height0.7m (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
Period13.4 sec.13.2 sec.12.4 sec.13.0 sec.11.9 sec.11.5 sec.3.5 sec.10.4 sec.
Significant height0.7m (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 temperature6°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.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature10°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 temperature8°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)
Precipitation0in0in0in0in0in0in0in0in
Humidity89%90%90%86%84%81%83%84%
Barometric pressure1023 hPa1022 hPa1021 hPa1020 hPa1019 hPa1017 hPa1014 hPa1013 hPa
Cloud cover94%83%38%20%29%3%100%19%
Heat index10°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 point8°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
Speed13km/h (8mph)13km/h (8mph)17km/h (11mph)25km/h (15mph)26km/h (16mph)26km/h (16mph)23km/h (15mph)24km/h (15mph)
Gusts27km/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 chill8°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
Height0.2m (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
Period10.1 sec.9.9 sec.12.2 sec.11.5 sec.10.9 sec.10.2 sec.10.1 sec.10.8 sec.
Significant height0.3m (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 temperature6°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.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature10°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 temperature7°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)
Precipitation0in0in0in0.1in0.1in0in0in0in
Humidity86%91%93%96%98%94%93%94%
Barometric pressure1011 hPa1009 hPa1009 hPa1008 hPa1006 hPa1006 hPa1005 hPa1005 hPa
Cloud cover52%65%100%100%100%77%93%83%
Heat index10°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 point8°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
Speed27km/h (17mph)22km/h (14mph)17km/h (11mph)18km/h (11mph)22km/h (14mph)27km/h (17mph)23km/h (14mph)27km/h (17mph)
Gusts29km/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 chill7°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
Height0.6m (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
Period10.7 sec.10.6 sec.10.2 sec.9.9 sec.9.8 sec.11.7 sec.11.2 sec.11.2 sec.
Significant height0.6m (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 temperature6°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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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