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 07:03 AM and sunset is at 04:02 PM.

Days 1–3 Weather Summary

Heavy rain (total 60mm), heaviest during Mon morning. Icy conditions (max 13°C on Sun night, min -3°C on Mon night). Winds increasing (light winds from the S on Sun morning, fresh winds from the S by Sun night).

Days 4–6 Weather Summary

Mostly dry. Icy conditions (max 7°C on Fri morning, min -3°C on Wed night). Wind will be generally light.

Days 7–9 Weather Summary

Heavy rain (total 50mm), heaviest during Sun night. Very mild (max 11°C on Sun night, min 2°C on Mon night). Winds increasing (light winds from the ENE on Sat night, fresh winds from the ESE by Sun night).

Days 10–12 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 1°C on Tue morning, min -7°C on Wed night). Wind will be generally light.

Sunday
10
Monday
11
Tuesday
12
Wednesday
13
Thursday
14
Friday
15
Saturday
16
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
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
8:37AM2.87m
9:12PM2.57m
9:17AM2.99m
9:55PM2.62m
9:58AM3.10m
10:39PM2.67m
10:41AM3.19m
11:23PM2.71m
11:26AM3.24m
00:10AM2.73m
12:14PM3.25m
1:00AM2.74m
1:06PM3.22m
1:54AM2.76m
2:02PM3.14m
2:51AM2.78m
3:03PM3.03m
3:51AM2.81m
4:08PM2.91m
4:52AM2.87m
5:15PM2.81m
5:54AM2.94m
6:23PM2.75m
6:53AM3.02m
Low Tide
3:01PM0.12m
3:03AM0.32m
3:43PM-0.01m
3:44AM0.26m
4:26PM-0.12m
4:27AM0.20m
5:09PM-0.20m
5:12AM0.16m
5:56PM-0.25m
6:00AM0.14m
6:44PM-0.26m
6:52AM0.14m
7:36PM-0.23m
7:48AM0.16m
8:31PM-0.18m
8:48AM0.18m
9:28PM-0.11m
9:54AM0.19m
10:28PM-0.03m
11:02AM0.16m
11:29PM0.04m
12:11PM0.09m
00:30AM0.09m
Wave
height (m) 
direction
period (s) 
0.7
SE
5
1
SSE
5
2.5
SSE
7
4
SSE
10
3.5
SSE
12
2.1
SSE
12
1.3
SSE
11
1.3
SSE
10
1.5
SSE
10
1.1
SSE
9
0.9
SSE
9
0.7
SE
8
0.4
SSE
8
0.4
SSE
8
1.1
SW
4
0.9
SSW
6
0.7
SSW
5
0.8
SSW
5
0.4
SSW
4
0.5
SE
13
0.4
ESE
12
0.6
ESE
11
0.8
SE
5
2.5
SE
7
4
SE
12
3.5
SE
12
3
SE
12
2.3
SE
12
2.1
SE
12
1.7
SE
11
1.3
SE
10
1.1
SE
10
0.9
SE
10
0.9
SE
9
0.7
SE
9
0.7
SE
9
cloud
mod rain
heavy rain
heavy rain
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
cloud
part cloud
clear
clear
cloud
cloud
part cloud
part cloud
cloud
light rain
heavy rain
light rain
light rain
cloud
cloud
light snow
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
cloudy
mod rain
heavy rain
heavy rain
clear
clear
clear
clear
clear
clear
some clouds
clear
clear
cloudy
some clouds
clear
clear
cloudy
cloudy
some clouds
some clouds
cloudy
light rain
heavy rain
light rain
light rain
cloudy
cloudy
light snow
some clouds
some clouds
some clouds
cloudy
some clouds
clear
clear
 km/h
10
S
15
S
30
S
15
NNW
25
W
20
W
10
W
15
SW
20
SW
20
W
20
WNW
15
NW
10
W
10
W
15
SW
15
WSW
20
WSW
20
WSW
10
NNW
10
NNE
5
E
5
E
15
ENE
30
ESE
10
SSE
15
SW
10
NW
15
N
15
N
20
NNW
15
NW
10
NNW
10
NW
15
NNW
10
N
10
N
 mm 
8
31
21
1.0
44
1.0
4
max°C
9
12
13
9
5
1
3
5
2
2
0
-1
0
-1
0
7
7
6
6
5
3
5
5
11
11
10
6
1
-3
-5
-4
-4
-6
-4
-4
-6
Moonrise
4:31
5:45
6:59
8:10
9:10
9:59
10:37
11:07
11:32
11:53
12:14
12:35
Moonset
2:12
2:45
3:27
4:23
5:31
6:49
8:09
9:29
10:46
12:01
1:15
Sunrise
7:03
7:03
7:05
7:05
7:05
7:07
7:07
7:07
7:09
7:09
7:09
7:11
Sunset
4:02
4:04
4:04
4:04
4:04
4:04
4:05
4:05
4:05
4:06
4:06
4:07
Today's sea temperature in Portland is 7.8 °C (Statistics for 10 Dec 1981-2005 – mean: 7.0 max: 8.3 min: 5.8°C)
Nearest