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 08:07 AM and sunset is at 04:06 PM.

Days 1–3 Weather Summary

Moderate rain (total 15mm), heaviest on Sun afternoon. Cool air temperatures (max 11°C on Fri morning, min 8°C on Sun night). Winds decreasing (strong winds from the SSE on Sat afternoon, calm by Sun night).

Days 4–6 Weather Summary

Some drizzle, heaviest during Mon morning. Cool air temperatures (max 11°C on Mon morning, min 3°C on Wed night). Winds increasing (light winds from the SW on Mon afternoon, strong winds from the NE by Wed afternoon).

Days 7–9 Weather Summary

Mostly dry. Mild temperatures (max 7°C on Sat night, min 1°C on Thu night). Mainly strong winds.

Days 10–12 Weather Summary

Mostly dry. Mild temperatures (max 7°C on Sun afternoon, min 3°C on Sun night). Mainly fresh winds.

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
6:53AM1.87m
12:29PM0.65m
7:09PM1.69m
7:18AM1.94m
1:23PM0.62m
7:34PM1.73m
7:41AM1.99m
2:00PM0.60m
7:59PM1.76m
8:06AM2.03m
2:35PM0.57m
8:28PM1.78m
8:37AM2.06m
3:18PM0.53m
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
Low Tide
11:32AM0.64m
1:58PM0.62m
11:23PM0.56m
11:57AM0.57m
2:55PM0.56m
11:56PM0.53m
12:29PM0.52m
00:29AM0.52m
1:05PM0.50m
1:05AM0.53m
1:49PM0.48m
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
Wave
height (m) 
direction
period (s) 
2
SW
8
1.6
SW
15
1.2
SW
14
1.5
SW
6
1.8
SW
7
2
SW
8
1.8
SW
16
1.4
SW
16
1
SW
15
1
SW
9
0.9
SW
9
0.9
SW
7
0.9
SW
5
1
SW
11
1
SW
14
1.3
ESE
7
1.5
ESE
7
1.4
ESE
7
1.4
ESE
7
1.4
ESE
7
1.5
ESE
7
1.3
ESE
6
1.4
ESE
6
1.5
ESE
7
1.5
ESE
7
1.5
ESE
7
1
ESE
6
0.9
E
5
0.9
ESE
5
1.1
ESE
6
0.7
ESE
6
0.5
E
5
0.6
NNE
3
0.7
N
3
0.9
NNE
4
0.9
ENE
4
clear
clear
rain showers
rain showers
light rain
light rain
light rain
light rain
light rain
light rain
part cloud
part cloud
clear
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
cloud
clear
clear
rain shwrs
rain shwrs
light rain
light rain
light rain
light rain
light rain
light rain
some clouds
some clouds
clear
some clouds
cloudy
cloudy
some clouds
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
some clouds
clear
clear
some clouds
cloudy
some clouds
some clouds
some clouds
cloudy
 km/h
30
WSW
25
WSW
15
SSW
30
SSE
35
SSE
20
SSW
25
SSE
5
S
5
N
15
S
10
SW
20
SSE
25
ESE
25
E
30
NE
35
NE
40
NE
35
NE
35
NE
35
NE
35
NE
35
NE
40
NE
40
NE
35
NE
40
NE
30
NE
30
NE
30
NE
25
NE
20
NNE
25
N
25
N
30
NNE
35
NNE
35
NNE
 mm 
1
1
1
3
3
3
3
1
max°C
11
11
11
10
10
11
10
10
9
11
11
10
9
9
8
7
6
4
3
4
2
4
5
5
5
6
7
6
7
4
5
6
5
6
6
6
Moonrise
8:11
9:05
9:46
10:17
10:40
10:58
11:12
11:25
11:38
11:51
12:07
12:28
Moonset
3:01
3:55
5:01
6:15
7:31
8:48
10:05
11:22
12:41
2:04
3:32
Sunrise
8:07
8:07
8:07
8:07
8:08
8:08
8:08
8:10
8:10
8:10
8:10
8:10
Sunset
4:06
4:06
4:07
4:07
4:07
4:08
4:08
4:09
4:10
4:10
4:12
4:13
Today's sea temperature in Portland is
11.5° C
(Statistics for 19 Dec 1981-2005 – mean: 11.2 max: 12.2 min: 10.5°C)
Issued (local time): 5 am Friday 19 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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