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 07:29 PM.

Days 1–4 Weather Summary

Light rain (total 3mm), mostly falling on Mon night. Cool air temperatures (max 14°C on Tue afternoon, min 5°C on Sun night). Wind will be generally light.

Days 5–7 Weather Summary

Heavy rain (total 28mm), heaviest during Sat morning. Cool air temperatures (max 12°C on Wed afternoon, min 6°C on Thu morning). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Very mild (max 16°C on Mon afternoon, min 5°C on Sun night). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 15mm), heaviest on Tue night. Very mild (max 17°C on Thu morning, min 6°C on Tue night). Wind will be generally light.

Sun
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
1
Fri
2
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
Wave Height Map
High Tide
5:16PM2.37m
5:24AM2.69m
6:15PM2.42m
6:26AM2.72m
7:14PM2.55m
7:30AM2.80m
8:11PM2.74m
8:31AM2.91m
9:04PM2.97m
9:29AM3.04m
9:54PM3.21m
10:24AM3.14m
10:43PM3.41m
11:17AM3.20m
11:31PM3.54m
12:09PM3.21m
00:20AM3.60m
1:01PM3.15m
1:11AM3.56m
1:56PM3.05m
2:04AM3.45m
2:52PM2.91m
3:01AM3.28m
Low Tide
11:08PM0.61m
11:55AM0.33m
00:10AM0.56m
12:54PM0.27m
1:15AM0.43m
1:52PM0.17m
2:17AM0.23m
2:47PM0.05m
3:15AM-0.01m
3:39PM-0.08m
4:10AM-0.24m
4:29PM-0.17m
5:02AM-0.44m
5:17PM-0.22m
5:54AM-0.55m
6:06PM-0.21m
6:46AM-0.58m
6:57PM-0.14m
7:39AM-0.52m
7:49PM-0.02m
8:34AM-0.37m
8:45PM0.12m
9:33AM-0.20m
Wave
height (m) 
direction
period (s) 
0.7
SSE
8
0.6
S
8
0.3
S
8
0.4
SSE
7
1.1
S
5
1
SSE
5
0.9
SSE
6
0.8
SSE
6
0.6
SSE
7
0.6
SSE
8
0.5
SE
8
0.4
SE
8
0.5
SE
8
0.6
SE
8
0.6
SE
9
0.6
SE
9
0.9
SE
4
2.2
SSE
7
1.7
SSE
8
1.3
SSE
8
1
SSE
8
0.9
SSE
8
0.6
SSE
8
0.5
SE
7
0.4
SE
7
0.4
SE
7
0.3
SE
7
0.3
SE
7
0.7
SSE
5
0.7
SSE
5
0.6
SSE
6
0.7
SSE
8
0.8
SSE
8
0.8
SSE
8
0.6
S
8
0.5
SSE
7
clear
clear
clear
part cloud
light rain
light rain
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
mod rain
heavy rain
cloud
clear
part cloud
clear
clear
clear
part cloud
part cloud
cloud
light rain
light rain
cloud
light rain
mod rain
cloud
cloud
part cloud
clear
clear
clear
clear
some clouds
light rain
light rain
some clouds
some clouds
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
some clouds
mod rain
heavy rain
cloudy
clear
some clouds
clear
clear
clear
some clouds
some clouds
cloudy
light rain
light rain
cloudy
light rain
mod rain
cloudy
cloudy
some clouds
clear
 km/h
25
NW
15
NW
10
SE
15
SSE
20
S
5
S
5
S
5
W
5
S
5
SSE
5
NE
10
SSE
10
SE
10
NE
15
E
15
SE
15
SE
20
S
10
NNW
15
W
20
WNW
20
NW
10
WNW
15
NW
10
NW
5
WSW
10
S
10
SE
5
ENE
5
ENE
10
E
10
SSW
10
WSW
10
WNW
10
NW
10
S
 mm 
2
1
10
18
2
3
1
9
max°C
11
9
8
9
8
7
14
14
11
12
11
10
11
10
9
8
8
9
13
12
10
11
10
10
16
13
13
8
7
7
7
12
17
17
13
12
Moonrise
2:14
2:50
3:19
3:43
4:05
4:27
4:49
5:13
5:43
6:21
7:10
8:11
9:21
Moonset
10:49
12:01
1:16
2:32
3:50
5:09
6:32
7:56
9:23
10:45
11:58
12:56
Sunrise
5:48
5:47
5:46
5:43
5:43
5:41
5:39
5:37
5:37
5:35
5:33
5:31
Sunset
7:29
7:30
7:31
7:32
7:34
7:35
7:37
7:37
7:38
7:39
7:40
7:42
Today's sea temperature in Portland is 5.1 °C (Statistics for 20 Apr 1981-2005 – mean: 5.2 max: 6.9 min: 3.6°C)
Issued (local time): 1 pm Sunday 20 Apr 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest