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 06:35 AM and sunset is at 06:52 PM.

Days 1–3 Weather Summary

Light rain (total 8mm), mostly falling on Sun afternoon. Warm air temperatures (max 21°C on Mon afternoon, min 8°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Moderate rain (total 18mm), heaviest on Fri night. Cool air temperatures (max 18°C on Wed afternoon, min 7°C on Wed night). Winds increasing (light winds from the NE on Wed night, fresh winds from the NNE by Fri night).

Days 7–9 Weather Summary

Heavy rain (total 23mm), heaviest during Sun afternoon. Very mild (max 14°C on Sat night, min 10°C on Sun afternoon). Mainly fresh winds.

Days 10–12 Weather Summary

Light rain (total 6mm), mostly falling on Tue afternoon. Warm (max 23°C on Wed afternoon, min 6°C on Thu night). Wind will be generally light.

Days 13–16 Weather Summary

Mostly dry. Very mild (max 19°C on Mon afternoon, min 6°C on Sun morning). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
1
Friday
2
Saturday
3
Sunday
4
Mon
5
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
High Tide
9:20AM0.56m
9:30PM0.69m
10:15AM0.59m
10:22PM0.70m
11:00AM0.64m
11:08PM0.72m
11:39AM0.69m
11:50PM0.75m
12:15PM0.74m
00:30AM0.77m
12:50PM0.80m
1:09AM0.79m
1:26PM0.85m
1:48AM0.79m
2:04PM0.89m
2:29AM0.78m
2:43PM0.92m
3:12AM0.75m
3:26PM0.94m
3:59AM0.72m
4:14PM0.93m
4:51AM0.67m
5:07PM0.90m
5:50AM0.64m
6:09PM0.86m
6:58AM0.61m
7:19PM0.82m
8:12AM0.62m
Low Tide
4:06PM0.25m
4:49AM0.17m
4:59PM0.23m
5:35AM0.15m
5:48PM0.19m
6:18AM0.12m
6:33PM0.15m
6:57AM0.09m
7:15PM0.10m
7:35AM0.07m
7:57PM0.06m
8:12AM0.06m
8:39PM0.02m
8:49AM0.06m
9:23PM0.00m
9:27AM0.06m
10:09PM-0.00m
10:08AM0.08m
10:58PM0.01m
10:53AM0.11m
11:52PM0.03m
11:45AM0.14m
00:51AM0.06m
12:46PM0.17m
1:54AM0.09m
1:55PM0.19m
2:57AM0.10m
3:06PM0.18m
Wave
Height (m)
Direction
Period (s)
light rain
light rain
rain showers
part cloud
cloud
part cloud
cloud
cloud
part cloud
cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
heavy rain
light rain
cloud
cloud
cloud
heavy rain
mod rain
cloud
light rain
cloud
cloud
light rain
rain showers
clear
clear
rain showers
light rain
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
light rain
light rain
rain shwrs
some clouds
cloudy
some clouds
cloudy
cloudy
some clouds
cloudy
clear
some clouds
some clouds
some clouds
some clouds
some clouds
light rain
heavy rain
light rain
cloudy
cloudy
cloudy
heavy rain
mod rain
cloudy
light rain
cloudy
cloudy
light rain
rain shwrs
clear
clear
rain shwrs
light rain
some clouds
some clouds
clear
some clouds
clear
clear
clear
clear
clear
clear
some clouds
some clouds
clear
km/h
10
SE
10
SSE
15
N
15
NNE
10
NNE
10
NNE
15
ENE
15
ENE
10
NNE
20
NE
20
ENE
10
NNE
20
NE
15
NE
15
NNE
25
NNE
25
NNE
35
NNE
30
NE
25
NE
25
NE
30
NE
30
NE
25
NE
20
NE
20
NNE
15
NNE
10
NNE
5
NW
5
WSW
5
W
10
SW
5
WSW
10
NNW
15
NW
10
WNW
20
NW
15
WNW
10
W
20
NW
15
NW
5
WSW
10
NNW
5
S
5
S
15
S
15
SSE
 mm
2
4
2
3
15
1
13
8
1
2
1
2
1
max °C
16
17
18
17
21
17
12
15
12
13
18
12
14
18
13
14
15
12
13
13
14
14
11
13
13
12
11
13
15
14
19
23
17
14
18
11
13
16
13
13
16
12
12
18
14
18
19
Moonrise
3:57
4:30
4:58
5:23
5:45
6:06
6:28
6:51
7:19
7:52
8:34
9:27
10:31
11:43
12:59
Moonset
1:00
2:05
3:11
4:17
5:25
6:33
7:44
8:57
10:13
11:30
12:44
1:50
2:44
3:27
4:01
Sunrise
6:35
6:35
6:37
6:37
6:39
6:39
6:41
6:41
6:43
6:43
6:45
6:46
6:47
6:48
6:48
6:50
Sunset
6:52
6:50
6:47
6:45
6:45
6:43
6:40
6:38
6:37
6:36
6:34
6:32
6:30
6:29
6:28
6:25
Today's sea temperature in Portland is
21.0°C
(Statistics for 20 Sep 1981-2005 – mean: 18.9 max: 20.6 min: 16.2°C)
Issued (local time): 7 am Sunday 20 Sep 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest