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 06:51 PM.

Days 1–4 Weather Summary

Some drizzle, heaviest during Wed night. Icy conditions (max 8°C on Wed afternoon, min -1°C on Thu morning). Winds increasing (calm on Tue night, fresh winds from the WNW by Thu afternoon).

Days 5–7 Weather Summary

A light covering of new snow, mostly falling on Sat afternoon will be washed away by heavy rain (total 38mm) on Sat night. Icy conditions (max 9°C on Sat night, min -7°C on Fri morning). Winds increasing (calm on Fri night, strong winds from the SSE by Sat night).

Days 8–10 Weather Summary

Mostly dry. Freeze-thaw conditions (max 11°C on Wed afternoon, min -6°C on Sun night). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 13mm), heaviest on Thu night. Very mild (max 13°C on Fri afternoon, min 5°C on Fri morning). Wind will be generally light.

Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Sat
30
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
7:29PM2.38m
7:43AM2.68m
8:34PM2.39m
8:47AM2.69m
9:30PM2.46m
9:41AM2.74m
10:17PM2.55m
10:28AM2.80m
10:56PM2.64m
11:08AM2.83m
11:31PM2.72m
11:44AM2.85m
00:02AM2.78m
12:18PM2.84m
00:31AM2.83m
12:51PM2.80m
1:01AM2.86m
1:24PM2.75m
1:31AM2.87m
1:58PM2.68m
2:03AM2.86m
2:35PM2.60m
2:40AM2.84m
3:17PM2.51m
Low Tide
1:23AM0.55m
2:17PM0.28m
2:29AM0.53m
3:15PM0.25m
3:26AM0.45m
4:04PM0.21m
4:14AM0.36m
4:46PM0.17m
4:56AM0.27m
5:22PM0.15m
5:33AM0.19m
5:53PM0.15m
6:07AM0.13m
6:23PM0.16m
6:40AM0.09m
6:52PM0.20m
7:12AM0.08m
7:22PM0.24m
7:45AM0.08m
7:54PM0.30m
8:22AM0.11m
8:30PM0.36m
9:03AM0.15m
Wave
height (m) 
direction
period (s) 
0.8
SSE
8
0.5
SE
7
0.6
SSE
7
0.5
SE
8
0.7
S
4
0.6
S
5
1.1
SW
4
1.3
WSW
5
1.3
W
4
0.7
WNW
3
0.2
SSE
9
0.2
SSE
9
0.6
S
4
1
S
5
3.5
SE
7
3.5
SSE
10
2.2
SSE
11
1.8
SE
11
1.5
SE
11
1.3
SE
10
1.1
SE
10
1
SE
10
1.3
SE
10
1.8
SE
10
1.9
ESE
11
1.6
ESE
10
1.4
ESE
10
1.3
ESE
9
1.3
SE
9
1.2
SE
9
1.2
SE
9
0.9
SE
9
1.1
SE
9
1.2
SE
10
1.3
SE
9
1.1
SE
9
clear
part cloud
part cloud
part cloud
cloud
part cloud
light rain
part cloud
clear
clear
clear
clear
part cloud
light snow
light snow
rain showers
clear
clear
clear
clear
clear
part cloud
part cloud
clear
cloud
part cloud
part cloud
cloud
cloud
light rain
heavy rain
clear
clear
part cloud
part cloud
clear
clear
some clouds
some clouds
some clouds
cloudy
some clouds
light rain
some clouds
clear
clear
clear
clear
some clouds
light snow
light snow
rain shwrs
clear
clear
clear
clear
clear
some clouds
some clouds
clear
cloudy
some clouds
some clouds
cloudy
cloudy
light rain
heavy rain
clear
clear
some clouds
some clouds
clear
 km/h
15
W
5
WNW
20
WNW
10
SW
15
SSW
15
WSW
25
W
30
WNW
35
WNW
20
WNW
10
NW
5
WSW
5
S
15
SSE
40
SE
20
WNW
25
WNW
15
WNW
5
NNW
10
E
10
SE
5
ENE
15
ESE
15
ESE
0
WSW
15
SSW
15
SSE
5
S
15
SSW
0
N
20
NNW
20
NNW
0
NW
15
SSW
25
W
20
NW
 mm 
1.0
12
26
1.0
12
max°C
5
4
5
2
5
8
6
1
1
-3
-3
4
3
0
6
9
-2
-1
-2
-3
-2
-2
0
1
1
7
11
8
11
12
10
8
13
10
12
12
Moonrise
12:06
1:11
2:17
3:23
4:27
5:30
6:32
7:34
8:38
9:43
10:51
12:00
Moonset
3:50
4:33
5:06
5:32
5:54
6:12
6:29
6:46
7:02
7:21
7:42
8:08
8:41
Sunrise
6:45
6:43
6:41
6:39
6:37
6:35
6:33
6:31
6:30
6:28
6:26
6:24
Sunset
6:51
6:52
6:52
6:54
6:55
6:57
6:58
6:59
7:00
7:01
7:02
7:04
7:05
Today's sea temperature in Portland is 4.5 °C (Statistics for 18 Mar 1981-2005 – mean: 3.0 max: 4.2 min: 1.9°C)
Nearest