Portsmouth Sea Conditions and Tide Table

Portsmouth Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at — and sunset is at 06:49 PM.

Days 1–4 Weather Summary

Heavy rain (total 34mm), heaviest during Mon morning. Cool air temperatures (max 17°C on Sun afternoon, min 5°C on Mon night). Wind will be generally light.

Days 5–7 Weather Summary

Light rain (total 4mm) at first, then becoming colder with a dusting of snow on Fri afternoon. Icy conditions (max 8°C on Thu afternoon, min -2°C on Sat morning). Winds increasing (light winds from the SE on Wed night, fresh winds from the N by Fri night).

Days 8–10 Weather Summary

Moderate rain (total 17mm), heaviest on Mon night. Very mild (max 12°C on Sun afternoon, min 1°C on Sat night). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 14mm), heaviest on Wed night. Very mild (max 10°C on Thu afternoon, min 3°C on Thu night). Wind will be generally light.

Sun
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Fri
28
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
Wave Height Map
High Tide
1:50PM7.91ft
2:01AM8.14ft
2:25PM7.64ft
2:32AM8.01ft
3:01PM7.32ft
3:06AM7.84ft
3:41PM6.99ft
3:45AM7.64ft
4:26PM6.66ft
4:31AM7.45ft
5:18PM6.4ft
5:23AM7.32ft
6:14PM6.27ft
6:21AM7.32ft
7:16PM6.3ft
7:25AM7.45ft
8:19PM6.59ft
8:30AM7.78ft
9:15PM7.12ft
9:27AM8.24ft
10:04PM7.78ft
10:19AM8.69ft
10:50PM8.46ft
Low Tide
7:45PM0.43ft
8:08AM0.16ft
8:17PM0.69ft
8:44AM0.33ft
8:50PM0.98ft
9:23AM0.56ft
9:29PM1.28ft
10:06AM0.82ft
10:12PM1.57ft
10:56AM1.02ft
11:03PM1.77ft
11:51AM1.18ft
11:58PM1.84ft
12:51PM1.15ft
00:59AM1.77ft
1:54PM0.95ft
2:04AM1.44ft
2:52PM0.56ft
3:05AM0.89ft
3:43PM0.07ft
3:59AM0.23ft
4:30PM-0.39ft
4:50AM-0.43ft
Wave
height (ft) 
direction
period (s) 
3.5
SE
5
5
SE
6
4.5
SE
8
4
SE
8
3.5
SE
9
3.5
SE
9
3
SE
10
2.5
SE
10
2.5
SE
9
2.5
SE
9
3.5
SE
8
4
ESE
11
4.5
ESE
11
4.5
ESE
10
4.5
ESE
10
6
NE
6
6
ENE
8
5
E
9
4
E
9
2.5
E
9
2
E
9
1.5
E
9
1.5
ESE
10
1.5
ESE
10
3.5
SE
4
5
ESE
6
5
SE
7
4.5
SE
8
3.5
ESE
7
3.5
SE
8
3.5
SE
9
3.5
SE
9
3.5
SE
10
3
SE
10
3
SE
10
2.5
ESE
10
cloud
mod rain
heavy rain
light rain
mod rain
cloud
clear
clear
clear
part cloud
part cloud
cloud
cloud
light rain
light rain
light snow
snow showers
part cloud
clear
clear
clear
part cloud
part cloud
cloud
cloud
heavy rain
light rain
cloud
light rain
cloud
light rain
rain showers
part cloud
part cloud
clear
clear
cloudy
mod rain
heavy rain
light rain
mod rain
cloudy
clear
clear
clear
some clouds
some clouds
cloudy
cloudy
light rain
light rain
light snow
snow shwrs
some clouds
clear
clear
clear
some clouds
some clouds
cloudy
cloudy
heavy rain
light rain
cloudy
light rain
cloudy
light rain
rain shwrs
some clouds
some clouds
clear
clear
 mph
15
S
15
S
5
SSW
5
S
10
N
5
NNW
5
ESE
0
S
5
ESE
10
SE
5
SE
10
SSE
10
SSE
10
SSE
20
N
20
N
15
NNW
15
N
10
NNW
5
NW
5
WNW
5
SW
5
NNW
5
SSE
15
SSE
15
SE
5
N
5
N
5
N
5
NNE
5
NW
10
WNW
10
W
10
WSW
10
W
10
NW
 in 
0.4
0.6
0.04
0.3
0.08
0.08
0.6
0.08
0.1
0.04
0.4
max°F
63
59
55
57
48
45
52
45
43
41
37
43
46
46
45
36
36
41
50
39
48
54
48
45
45
41
43
43
41
45
46
43
46
50
45
43
Moonrise
9:29
10:33
11:38
12:43
1:46
2:45
3:35
4:17
4:51
5:20
5:44
6:07
Moonset
7:39
7:58
8:20
8:47
9:20
10:02
10:55
11:58
1:09
2:25
3:43
5:02
6:22
Sunrise
6:52
6:50
6:48
6:47
6:45
6:43
6:41
6:39
6:37
6:35
6:33
6:31
Sunset
6:49
6:51
6:52
6:52
6:53
6:54
6:57
6:58
6:59
7:00
7:00
7:01
Today's sea temperature in Portsmouth is 39 °F (Statistics for 16 Mar 1981-2005 – mean: 38 max: 40 min: 35°F)
Issued (local time): 1 pm Sunday 16 Mar 2025
Forecast update inUpdates in 2 hr 5 min 35 sUpdate imminent
Nearest