Portland Sea Conditions and Tide Table

Portland 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 —.

Days 1–4 Weather Summary

Mostly dry. Low air temperatures (max 5°C on Tue night, min 1°C on Thu night). Winds decreasing (near gales from the ENE on Thu morning, fresh winds from the NE by Thu night).

Days 5–7 Weather Summary

Mostly dry. Low air temperatures (max 5°C on Sat morning, min 1°C on Sat night). Winds decreasing (fresh winds from the ENE on Sat morning, light winds from the NE by Mon afternoon).

Days 8–10 Weather Summary

Mostly dry. Mild temperatures (max 8°C on Wed night, min 1°C on Mon night). Winds increasing (light winds from the N on Tue morning, fresh winds from the NW by Wed night).

Days 11–13 Weather Summary

Light rain (total 3mm), mostly falling on Sat afternoon. Very mild (max 10°C on Fri night, min 4°C on Thu night). Winds increasing (light winds from the NNW on Thu night, strong winds from the NW by Sun afternoon).

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sun
4
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
PM
Wave Height Map
High Tide
9:01PM1.80m
9:11AM2.06m
9:37PM1.79m
9:48AM2.03m
10:17PM1.75m
10:29AM1.96m
11:02PM1.68m
11:17AM1.85m
11:59PM1.61m
12:16PM1.74m
1:07AM1.58m
1:25PM1.66m
2:14AM1.58m
9:27AM0.86m
2:34PM1.60m
9:49PM0.67m
9:53AM0.77m
4:16PM1.59m
10:24PM0.64m
10:10AM0.68m
5:41PM1.72m
11:04PM0.62m
6:05AM1.95m
6:32PM1.87m
6:49AM2.13m
7:15PM1.98m
7:30AM2.24m
12:52PM0.45m
Low Tide
1:49AM0.56m
2:44PM0.45m
2:42AM0.57m
3:34PM0.42m
3:33AM0.58m
4:15PM0.41m
4:18AM0.60m
4:57PM0.44m
5:06AM0.65m
5:48PM0.51m
6:07AM0.72m
6:55PM0.57m
7:24AM0.76m
8:03PM0.60m
8:37AM0.73m
9:04PM0.60m
9:54AM0.68m
12:27PM0.56m
10:03PM0.60m
1:24PM0.44m
10:55PM0.57m
2:26PM0.32m
11:36PM0.54m
12:23PM0.45m
Wave
height (m) 
direction
period (s) 
1.4
ESE
6
1.8
ESE
7
1.9
ESE
8
1.8
ESE
8
2.4
ESE
9
2.1
ESE
8
1.4
ESE
6
1
ESE
6
1.2
ESE
6
1.2
ESE
6
1.3
ESE
6
1.3
ESE
6
1.1
ESE
6
1
E
5
0.9
ESE
6
0.8
ESE
6
0.4
ESE
5
0.3
SW
11
0.2
WSW
13
0.3
SW
19
0.3
SW
18
0.5
SW
16
0.5
SW
15
0.5
SW
14
0.9
WNW
4
0.5
NW
4
0.6
NW
3
0.3
NNW
3
0.2
WSW
7
0.3
WNW
3
0.5
W
3
0.8
WSW
4
1.4
WSW
6
1.2
WSW
7
1.4
W
5
1.5
W
5
cloud
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
light rain
clear
clear
part cloud
cloudy
clear
clear
clear
some clouds
cloudy
some clouds
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
clear
some clouds
cloudy
light rain
clear
clear
some clouds
 km/h
35
NE
40
ENE
40
ENE
45
NE
50
ENE
45
ENE
30
ENE
30
NE
35
NE
30
NE
40
ENE
30
NE
30
NE
30
NE
25
NE
20
NE
10
NE
5
NE
15
NE
15
NNE
15
N
25
NNE
25
N
20
NNW
35
NW
20
NNW
30
N
15
N
15
NNW
20
NNW
20
WNW
30
W
35
W
30
NW
40
WNW
45
NW
 mm 
3
max°C
5
4
4
3
4
4
3
2
4
2
5
4
3
2
3
2
2
3
3
3
5
4
3
4
8
7
7
6
7
9
10
9
9
9
8
7
Moonrise
10:58
11:12
11:25
11:38
11:51
12:07
12:28
12:58
1:41
2:44
4:04
5:32
Moonset
8:48
10:05
11:22
12:41
2:04
3:32
5:03
6:31
7:48
8:45
9:24
Sunrise
8:08
8:08
8:10
8:10
8:10
8:10
8:10
8:10
8:10
8:10
8:10
8:10
Sunset
4:08
4:08
4:09
4:10
4:10
4:12
4:13
4:14
4:15
4:16
4:17
4:19
Today's sea temperature in Portland is
11.3° C
(Statistics for 23 Dec 1981-2005 – mean: 11.0 max: 12.0 min: 10.2°C)
Issued (local time): 11 pm Tuesday 23 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest