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 07:28 AM and sunset is at 07:42 PM.

Days 1–3 Weather Summary

Moderate rain (total 14mm), heaviest on Wed night. Warm air temperatures (max 26°C on Mon afternoon, min 21°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Heavy rain (total 27mm), heaviest during Thu night. Warm air temperatures (max 25°C on Fri afternoon, min 21°C on Thu night). Mainly fresh winds.

Days 7–9 Weather Summary

Light rain (total 5mm), mostly falling on Sun night. Warm (max 25°C on Sun morning, min 15°C on Sun night). Mainly fresh winds.

Days 10–12 Weather Summary

Mostly dry. Warm (max 25°C on Fri morning, min 21°C on Wed night). Mainly fresh winds.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
7:57PM0.32m
8:29PM0.31m
8:27PM0.28m
7:51PM0.24m
7:12PM0.21m
6:30PM0.20m
8:11AM0.34m
5:26PM0.23m
10:05AM0.34m
12:58PM0.34m
4:33PM0.36m
5:50PM0.37m
6:52PM0.36m
Low Tide
8:36AM0.10m
9:43AM0.08m
10:47AM0.08m
9:47PM0.28m
11:51AM0.09m
10:20PM0.24m
12:55PM0.12m
11:14PM0.19m
2:03PM0.17m
00:12AM0.13m
3:33PM0.22m
1:15AM0.08m
2:23AM0.04m
3:37AM0.03m
4:59AM0.03m
6:30AM0.04m
Wave
height (m) 
direction
period (s) 
0.7
SE
6
0.7
SE
6
0.6
ESE
6
0.5
SE
6
0.5
SE
6
0.6
ESE
6
0.5
SE
6
0.4
ESE
5
0.9
ESE
4
1
ESE
6
1.1
SE
6
1.6
SE
7
1.4
SE
7
1.3
SE
8
1.4
SE
8
1.3
ESE
8
1
ESE
8
1.1
ESE
8
1.1
ESE
8
1
ESE
8
0.9
ESE
8
1.1
ENE
5
0.9
ESE
7
0.6
ESE
7
0.6
ESE
6
0.7
ESE
6
0.7
E
6
0.6
E
6
0.8
SE
4
1.1
SE
5
1.1
SE
6
1.3
SE
6
1.1
SE
6
1.1
SE
6
1
SE
6
0.9
SE
6
part cloud
clear
clear
clear
clear
part cloud
part cloud
light rain
thunderstorm
thunderstorm
rain showers
thunderstorm
cloud
clear
part cloud
part cloud
clear
clear
clear
clear
rain showers
rain showers
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
some clouds
clear
clear
clear
clear
some clouds
some clouds
light rain
risk tstorm
risk tstorm
rain shwrs
risk tstorm
cloudy
clear
some clouds
some clouds
clear
clear
clear
clear
rain shwrs
rain shwrs
clear
clear
clear
some clouds
clear
clear
clear
clear
some clouds
clear
some clouds
clear
clear
some clouds
 km/h
5
NNE
20
SE
10
SSE
10
SSE
20
ESE
15
ESE
15
SE
20
SE
25
ESE
30
SE
35
SE
30
S
30
S
20
SSE
25
S
25
S
25
SE
20
SSE
20
SSE
20
SE
5
SE
30
NNE
15
ENE
10
ESE
20
ESE
20
ESE
15
SE
25
SSE
30
SSE
25
SSE
30
S
30
SSE
25
SSE
30
SSE
30
SSE
20
SSE
 mm 
1.0
13
3
1.0
23
3
2.0
max°C
25
26
22
25
25
22
24
24
23
24
23
22
24
25
22
24
24
22
25
25
23
19
22
19
21
21
21
23
24
21
23
24
22
25
25
22
Moonrise
4:17
5:01
5:40
6:16
6:50
7:25
8:01
8:41
9:26
10:18
11:16
12:18
Moonset
2:47
3:53
4:59
6:05
7:12
8:20
9:30
10:42
11:54
1:03
2:05
Sunrise
7:28
7:28
7:26
7:24
7:24
7:22
7:22
7:20
7:20
7:18
7:16
7:16
Sunset
7:42
7:43
7:43
7:44
7:44
7:45
7:45
7:45
7:45
7:46
7:46
7:47
Today's sea temperature in Portland is 18.8 °C (Statistics for 24 Mar 1981-2005 – mean: 20.0 max: 22.5 min: 18.4°C)
Issued (local time): 6 am Monday 24 Mar 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest