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 06:03 AM and sunset is at 08:45 PM.

Days 1–3 Weather Summary

Light rain (total 2mm), mostly falling on Mon afternoon. Cool air temperatures (max 17°C on Mon afternoon, min 11°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 19°C on Fri afternoon, min 9°C on Thu night). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Very mild (max 16°C on Sat morning, min 10°C on Mon night). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Very mild (max 19°C on Thu afternoon, min 11°C on Tue morning). Wind will be generally light.

Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
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
3:23AM1.13m
12:18PM0.59m
3:49AM1.08m
1:22PM0.62m
4:13AM1.01m
2:20PM0.63m
4:35AM0.94m
3:22PM0.62m
4:56AM0.88m
4:36PM0.61m
5:12AM0.82m
6:36PM0.59m
5:16AM0.76m
4:15AM0.73m
00:38AM0.82m
00:55AM0.92m
1:20AM1.00m
1:45AM1.06m
Low Tide
7:12PM0.05m
10:57AM0.59m
7:49PM0.06m
10:46AM0.59m
8:26PM0.11m
10:54AM0.56m
9:03PM0.19m
11:15AM0.52m
9:38PM0.30m
11:47AM0.47m
10:10PM0.43m
12:31PM0.43m
10:25PM0.56m
1:27PM0.39m
2:35PM0.35m
3:41PM0.32m
4:35PM0.28m
5:18PM0.24m
Wave
height (m) 
direction
period (s) 
3
WSW
12
3
WSW
12
2.5
WSW
12
3
WSW
11
3.5
WSW
12
2.5
WSW
11
2.5
WSW
11
3
SW
13
3
SW
13
3
SW
13
2.5
SW
12
2.1
SW
12
2.1
SW
12
2.1
SW
12
2.2
SW
12
1.8
SW
13
1.7
SW
13
1.6
SW
12
1.9
SW
13
2
SW
14
2
SW
13
2.1
SW
13
2.3
SW
12
2.5
SW
12
3
SW
12
3
SW
12
3
SW
11
2.5
SSW
11
2.5
SSW
11
2.3
SSW
11
2.1
SSW
10
2.1
SSW
10
3
SSW
14
2.5
SSW
13
2.2
SW
12
1.9
SSW
10
part cloud
part cloud
part cloud
part cloud
light rain
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
some clouds
some clouds
some clouds
some clouds
light rain
rain shwrs
some clouds
some clouds
some clouds
some clouds
clear
clear
some clouds
clear
clear
some clouds
some clouds
cloudy
some clouds
clear
clear
clear
some clouds
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
 km/h
15
WSW
25
W
25
NW
25
WNW
25
WNW
15
W
15
SW
15
S
10
ESE
10
SE
15
SSE
15
SE
15
SE
20
SE
20
E
5
SE
15
S
5
SW
20
SSW
20
SSW
10
WSW
25
W
25
WSW
20
SW
20
SSW
25
SSW
15
S
15
SSW
20
SW
15
WSW
20
SW
20
SSW
5
S
10
W
25
W
15
WSW
 mm 
1
1
max°C
13
15
13
16
17
15
14
15
13
13
14
12
13
14
13
18
19
16
16
16
13
15
16
14
13
13
12
13
14
13
16
16
14
17
19
17
Moonrise
11:33
12:14
12:47
1:14
1:38
2:00
2:21
2:43
3:07
3:35
4:08
Moonset
7:45
9:01
10:15
11:26
12:32
1:35
2:36
3:36
4:36
5:36
6:37
7:38
Sunrise
6:03
6:03
6:03
6:03
6:03
6:03
6:03
6:03
6:03
6:03
6:03
6:03
Sunset
8:45
8:46
8:47
8:49
8:50
8:50
8:51
8:52
8:52
8:52
8:53
8:54
Today's sea temperature in Portland is
15.9° C
(Statistics for 07 Dec 1981-2005 – mean: 15.2 max: 16.3 min: 14.3°C)
Issued (local time): 10 am Sunday 07 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest