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 07:22 AM and sunset is at 07:45 PM.

Days 1–3 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Sat afternoon, min 19°C on Thu morning). Winds increasing (light winds from the SSW on Thu morning, fresh winds from the SSE by Fri morning).

Days 4–6 Weather Summary

Some drizzle, heaviest during Tue morning. Warm air temperatures (max 28°C on Tue afternoon, min 9°C on Tue night). Winds decreasing (fresh winds from the SSE on Sun night, calm by Mon night).

Days 7–9 Weather Summary

Some drizzle, heaviest during Thu night. Warm (max 22°C on Fri morning, min 10°C on Wed morning). Wind will be generally light.

Days 10–12 Weather Summary

Moderate rain (total 16mm), heaviest on Mon night. Warm (max 24°C on Mon afternoon, min 20°C on Sat afternoon). Winds decreasing (strong winds from the SSE on Mon morning, light winds from the W by Mon night).

Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
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
11:02AM0.26m
5:53PM0.28m
5:56PM0.29m
6:00PM0.30m
6:05PM0.31m
6:21PM0.32m
6:44PM0.33m
7:23PM0.33m
7:58PM0.31m
7:57PM0.28m
7:13PM0.23m
6:32PM0.20m
6:45AM0.34m
5:41PM0.21m
Low Tide
12:53PM0.26m
2:39AM0.13m
3:18AM0.12m
4:05AM0.11m
5:08AM0.10m
6:28AM0.09m
7:55AM0.07m
9:17AM0.07m
10:33AM0.07m
9:31PM0.28m
11:44AM0.09m
10:14PM0.22m
12:55PM0.13m
11:10PM0.16m
2:11PM0.19m
00:09AM0.11m
Wave
height (m) 
direction
period (s) 
0.8
ESE
8
0.7
ESE
8
1.1
SE
4
1.2
SE
5
1.3
SE
6
1.2
SE
6
1.1
SE
6
1
SE
6
0.8
SE
6
0.9
SE
6
1.1
SE
6
1.1
SE
6
1.5
SE
7
1.4
SE
8
1.6
SE
7
1.1
SE
8
1
ESE
8
1.2
ESE
7
1.1
E
7
0.7
ESE
8
0.5
ESE
8
0.4
ESE
7
0.4
ESE
7
0.7
E
5
0.6
ESE
6
0.6
ESE
6
0.9
ESE
6
1.2
ESE
7
1.3
ESE
7
1.4
ESE
8
1.4
ESE
8
1.5
ESE
8
1.7
ESE
7
1.9
ESE
8
1.7
ESE
8
1.4
ESE
8
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
rain showers
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
thunderstorm
part cloud
part cloud
cloud
cloud
cloud
cloud
thunderstorm
thunderstorm
clear
clear
clear
clear
some clouds
clear
clear
some clouds
some clouds
some clouds
clear
some clouds
some clouds
some clouds
some clouds
rain shwrs
clear
clear
clear
clear
clear
some clouds
some clouds
rain shwrs
some clouds
some clouds
some clouds
risk tstorm
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
risk tstorm
risk tstorm
 km/h
10
SSW
25
SE
30
SE
35
SSE
35
SSE
30
SSE
25
SSE
30
SE
20
SE
25
SSE
30
SE
30
SSE
30
S
25
SSE
15
S
25
N
30
N
25
NNE
30
N
20
N
15
NE
15
E
20
ESE
15
ESE
10
ENE
25
E
20
E
30
E
35
E
25
ESE
25
E
35
ESE
35
ESE
40
SE
40
SSE
15
S
 mm 
1.0
1.0
1.0
1.0
14
max°C
22
22
19
21
21
21
22
23
22
23
23
22
25
27
23
23
28
22
15
19
17
20
20
20
22
22
20
22
21
21
22
22
22
23
24
23
Moonrise
11:02
12:02
1:03
2:03
3:00
3:51
4:37
5:17
5:54
6:30
7:04
Moonset
9:07
9:43
10:26
11:15
12:12
1:16
2:23
3:32
4:41
5:49
6:57
8:05
Sunrise
7:22
7:22
7:20
7:20
7:18
7:16
7:16
7:15
7:13
7:13
7:11
7:11
Sunset
7:45
7:45
7:45
7:45
7:46
7:46
7:47
7:47
7:49
7:50
7:50
7:51
Today's sea temperature in Portland is 21.7 °C (Statistics for 28 Mar 1981-2005 – mean: 20.3 max: 22.5 min: 17.9°C)
Nearest