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 03:59 PM.

Days 1–4 Weather Summary

Heavy rain (total 22mm), heaviest during Thu afternoon. Cool air temperatures (max 12°C on Thu afternoon, min 9°C on Thu night). Winds decreasing (near gales from the SSW on Thu afternoon, light winds from the SW by Fri night).

Days 5–7 Weather Summary

Mostly dry. Low air temperatures (max 9°C on Sun afternoon, min 5°C on Tue night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Mild temperatures (max 6°C on Wed afternoon, min 3°C on Wed night). Mainly fresh winds.

Days 11–13 Weather Summary

Mostly dry. Mild temperatures (max 6°C on Sat afternoon, min 1°C on Mon night). Wind will be generally light.

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
10:48PM4.24m
10:56AM4.37m
11:26PM4.32m
11:32AM4.40m
00:03AM4.38m
12:06PM4.41m
00:39AM4.40m
12:39PM4.39m
1:13AM4.41m
1:11PM4.36m
1:46AM4.39m
1:44PM4.32m
2:22AM4.37m
2:24PM4.27m
3:05AM4.34m
3:13PM4.19m
3:59AM4.30m
4:14PM4.12m
4:59AM4.27m
5:20PM4.07m
5:59AM4.26m
6:25PM4.06m
6:59AM4.28m
Low Tide
3:42PM1.40m
3:58AM1.50m
4:20PM1.30m
4:36AM1.47m
4:57PM1.24m
5:12AM1.48m
5:31PM1.22m
5:45AM1.50m
6:02PM1.21m
6:17AM1.51m
6:35PM1.20m
6:52AM1.51m
7:11PM1.20m
7:31AM1.52m
7:52PM1.22m
8:16AM1.56m
8:40PM1.30m
9:09AM1.62m
9:36PM1.41m
10:12AM1.69m
10:42PM1.51m
11:23AM1.68m
11:53PM1.54m
Wave
height (m) 
direction
period (s) 
mod rain
light rain
part cloud
clear
rain showers
clear
cloud
light rain
mod rain
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
clear
clear
clear
cloud
part cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
mod rain
light rain
some clouds
clear
rain shwrs
clear
cloudy
light rain
mod rain
some clouds
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
clear
clear
clear
cloudy
some clouds
clear
some clouds
cloudy
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
 km/h
60
SSW
25
W
25
WSW
20
WSW
15
SSW
25
S
25
SSE
25
SSE
35
SSE
25
S
20
S
10
SSE
5
SSW
10
E
15
ENE
20
ENE
20
NNE
25
NE
30
NE
30
NE
30
NE
30
NE
25
NE
30
NE
30
NE
30
NE
25
NE
20
NE
20
ENE
20
NE
20
NE
15
ENE
10
ENE
10
ENE
10
NE
10
NE
 mm 
8
1
2
5
6
max°C
12
12
10
10
10
9
9
10
10
9
8
9
9
7
7
7
6
7
6
5
5
5
6
6
6
5
6
6
5
3
4
2
3
3
2
1
Moonrise
8:07
9:01
9:42
10:13
10:36
10:53
11:07
11:20
11:33
11:45
12:01
12:22
Moonset
2:54
3:48
4:54
6:08
7:24
8:42
9:59
11:17
12:36
1:59
3:27
Sunrise
8:02
8:03
8:03
8:03
8:04
8:04
8:04
8:06
8:06
8:06
8:06
8:06
Sunset
3:59
4:00
4:00
4:00
4:00
4:01
4:01
4:02
4:02
4:04
4:05
4:06
Today's sea temperature in Portsmouth is
10.6° C
(Statistics for 18 Dec 1981-2005 – mean: 10.9 max: 11.8 min: 10.2°C)
Issued (local time): 5 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest