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 06:43 AM and sunset is at 06:59 PM.

Days 1–3 Weather Summary

Moderate rain (total 17mm), heaviest on Mon afternoon. Icy conditions (max 10°C on Tue afternoon, min -4°C on Sun morning). Winds increasing (calm on Sun night, strong winds from the SSE by Mon afternoon).

Days 4–6 Weather Summary

Mostly dry. Icy conditions (max 11°C on Fri afternoon, min -3°C on Fri night). Wind will be generally light.

Days 7–9 Weather Summary

A light fall of snow, heaviest on Sun night. Turning milder with light rain (total 9mm) on Mon night. Freeze-thaw conditions (max 10°C on Mon night, min -3°C on Sat morning). Winds increasing (calm on Sat afternoon, fresh winds from the SSW by Mon night).

Days 10–12 Weather Summary

A moderate fall of snow, heaviest on Wed night. Becoming mild with drizzle, on Thu afternoon. Freeze-thaw conditions (max 8°C on Tue afternoon, min -1°C on Tue night). Winds increasing (light winds from the NNE on Wed afternoon, strong winds from the NE by Thu morning).

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
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
PM
night
Wave Height Map
High Tide
3:25PM0.89m
4:01AM1.11m
4:36PM0.96m
5:04AM1.18m
5:35PM1.08m
5:59AM1.25m
6:27PM1.21m
6:49AM1.32m
7:15PM1.35m
7:38AM1.37m
8:02PM1.47m
8:25AM1.38m
8:48PM1.55m
9:12AM1.36m
9:36PM1.58m
10:00AM1.31m
10:25PM1.56m
10:49AM1.23m
11:17PM1.49m
11:41AM1.14m
00:14AM1.39m
12:40PM1.05m
1:17AM1.29m
Low Tide
9:30AM0.40m
9:25PM0.37m
10:35AM0.34m
10:37PM0.31m
11:30AM0.25m
11:39PM0.21m
12:18PM0.15m
00:35AM0.11m
1:03PM0.05m
1:27AM0.01m
1:47PM-0.03m
2:18AM-0.06m
2:31PM-0.07m
3:07AM-0.09m
3:15PM-0.08m
3:58AM-0.07m
4:01PM-0.06m
4:49AM-0.02m
4:50PM0.00m
5:44AM0.08m
5:42PM0.09m
6:43AM0.18m
6:41PM0.18m
Wave
height (m) 
direction
period (s) 
clear
clear
part cloud
light rain
heavy rain
rain showers
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
mod snow
light snow
cloud
rain showers
part cloud
part cloud
clear
cloud
cloud
mod snow
light snow
light rain
cloud
clear
clear
some clouds
light rain
heavy rain
rain shwrs
clear
clear
some clouds
some clouds
some clouds
clear
clear
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
mod snow
light snow
cloudy
rain shwrs
some clouds
some clouds
clear
cloudy
cloudy
mod snow
light snow
light rain
cloudy
 km/h
20
NW
15
WNW
5
SSW
25
SSE
30
SW
10
SW
25
WSW
20
WSW
5
NNW
5
SW
20
NW
20
WNW
15
WNW
20
WSW
15
WSW
20
WSW
20
WSW
20
N
15
NNW
5
NNW
10
SW
15
SW
10
S
20
E
20
E
15
SSE
20
WSW
25
W
20
WNW
20
WNW
15
N
20
ENE
25
NE
35
NE
35
NNE
30
NNE
 mm 
2.0
14
1.0
1.0
8
1.0
max°C
0
7
6
3
9
9
9
10
8
6
8
5
4
7
6
6
11
7
0
5
5
4
1
1
3
7
10
6
8
5
1
4
2
2
2
2
Moonrise
3:30
4:13
4:48
5:18
5:44
6:08
6:31
6:57
7:25
8:00
8:43
9:37
Moonset
12:07
1:17
2:32
3:48
5:06
6:24
7:43
9:05
10:28
11:49
1:04
Sunrise
6:43
6:41
6:39
6:39
6:37
6:35
6:33
6:31
6:30
6:28
6:26
6:24
Sunset
6:59
7:00
7:01
7:02
7:04
7:05
7:06
7:07
7:07
7:08
7:09
7:10
Today's sea temperature in Portsmouth is 6.6 °C (Statistics for 23 Mar 1981-2005 – mean: 4.4 max: 6.2 min: 2.5°C)
Issued (local time): 7 am Sunday 23 Mar 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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