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 07:07 AM and sunset is at 04:16 PM.

Days 1–3 Weather Summary

Moderate rain (total 11mm) heaviest on Fri morning, then becoming colder with a dusting of snow on Fri night. Icy conditions (max 14°C on Fri morning, min -5°C on Sun night). Winds decreasing (near gales from the S on Fri morning, light winds from the WNW by Sat morning).

Days 4–6 Weather Summary

Moderate rain (total 10mm), heaviest on Tue morning. Icy conditions (max 5°C on Tue night, min -4°C on Mon morning). Winds decreasing (fresh winds from the SW on Tue morning, calm by Wed night).

Days 7–9 Weather Summary

Moderate rain (total 13mm) heaviest on Thu night, then becoming colder with a dusting of snow on Sat afternoon. Freeze-thaw conditions (max 13°C on Fri morning, min -4°C on Sat night). Winds decreasing (fresh winds from the SW on Thu night, light winds from the WSW by Sat morning).

Days 10–12 Weather Summary

Heavy rain (total 30mm), heaviest during Tue night. Freeze-thaw conditions (max 9°C on Tue night, min -8°C on Sun night). Wind will be generally light.

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
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
7:15PM1.01m
7:40AM1.29m
7:56PM1.02m
8:19AM1.29m
8:38PM1.02m
8:58AM1.27m
9:20PM1.03m
9:38AM1.24m
10:04PM1.05m
10:19AM1.21m
10:51PM1.07m
11:03AM1.18m
11:41PM1.11m
11:52AM1.14m
00:34AM1.15m
12:46PM1.11m
1:31AM1.21m
1:45PM1.09m
2:30AM1.28m
2:47PM1.08m
3:30AM1.35m
3:50PM1.08m
4:30AM1.42m
Low Tide
1:26PM0.25m
1:10AM0.21m
2:06PM0.24m
1:51AM0.21m
2:45PM0.23m
2:32AM0.22m
3:24PM0.23m
3:15AM0.24m
4:03PM0.22m
4:00AM0.26m
4:43PM0.21m
4:50AM0.28m
5:26PM0.20m
5:44AM0.29m
6:12PM0.19m
6:43AM0.29m
7:03PM0.17m
7:47AM0.27m
7:57PM0.15m
8:52AM0.24m
8:55PM0.13m
9:57AM0.19m
9:54PM0.09m
Wave
height (m) 
direction
period (s) 
mod rain
light rain
snow showers
clear
part cloud
clear
part cloud
clear
clear
clear
clear
cloud
mod rain
rain showers
cloud
cloud
cloud
part cloud
clear
cloud
heavy rain
part cloud
clear
part cloud
cloud
light snow
light snow
part cloud
clear
clear
clear
part cloud
clear
part cloud
light rain
heavy rain
mod rain
light rain
snow shwrs
clear
some clouds
clear
some clouds
clear
clear
clear
clear
cloudy
mod rain
rain shwrs
cloudy
cloudy
cloudy
some clouds
clear
cloudy
heavy rain
some clouds
clear
some clouds
cloudy
light snow
light snow
some clouds
clear
clear
clear
some clouds
clear
some clouds
light rain
heavy rain
 km/h
40
SSE
25
SW
35
W
20
W
15
WSW
30
SW
25
WSW
25
WNW
25
WNW
25
NW
15
WNW
10
W
30
SSW
25
WSW
25
W
20
NW
15
NW
5
NNW
15
WSW
15
WSW
20
S
20
WSW
15
WNW
15
WNW
10
NW
10
NNE
20
N
25
NNW
25
NW
20
NW
20
NW
20
NW
10
W
20
SW
20
SW
20
S
 mm 
8
3
7
3
12
1
2
24
max°C
14
11
1
1
2
7
6
3
-2
0
0
2
4
2
5
3
3
0
4
4
10
13
11
6
5
3
1
-2
-3
-5
-5
-4
-1
3
4
9
Moonrise
7:07
7:58
8:43
9:19
9:49
10:15
10:38
10:59
11:20
11:43
12:09
12:41
Moonset
3:37
4:32
5:34
6:41
7:48
8:56
10:03
11:12
12:22
1:36
2:54
Sunrise
7:07
7:07
7:07
7:07
7:09
7:09
7:09
7:09
7:09
7:11
7:11
7:11
Sunset
4:16
4:16
4:16
4:17
4:19
4:19
4:20
4:20
4:21
4:22
4:22
4:22
Today's sea temperature in Portsmouth is
4.1° C
(Statistics for 19 Dec 1981-2005 – mean: 8.2 max: 11.1 min: 6.6°C)
Issued (local time): 6 am Friday 19 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest