Seavey Island, Portsmouth Harbor Sea Conditions and Tide Table

Seavey Island, Portsmouth Harbor 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 05:03 AM and sunset is at 08:22 PM.

Days 1–3 Weather Summary

Light rain (total 3mm), mostly falling on Fri afternoon. Warm air temperatures (max 27°C on Thu morning, min 16°C on Fri night). Wind will be generally light.

Days 4–6 Weather Summary

Light rain (total 3mm), mostly falling on Tue night. Warm air temperatures (max 25°C on Mon afternoon, min 15°C on Tue night). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 2mm), mostly falling on Wed morning. Warm (max 28°C on Fri morning, min 15°C on Wed morning). Wind will be generally light.

Days 10–12 Weather Summary

Moderate rain (total 11mm), heaviest on Sat night. Warm (max 26°C on Sun afternoon, min 17°C on Sun night). Wind will be generally light.

Days 13–16 Weather Summary

Light rain (total 6mm), mostly falling on Wed afternoon. Warm (max 23°C on Wed morning, min 14°C on Wed night). Wind will be generally light.

Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Fri
26
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
Wave Height Map
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High Tide
8:30AM2.39m
8:51PM2.73m
9:28AM2.44m
9:42PM2.88m
10:22AM2.49m
10:33PM3.01m
11:16AM2.54m
11:25PM3.09m
12:10PM2.58m
00:19AM3.14m
1:04PM2.61m
1:13AM3.14m
1:57PM2.64m
2:07AM3.09m
2:49PM2.64m
3:02AM2.98m
3:45PM2.63m
3:59AM2.83m
4:42PM2.62m
5:00AM2.67m
5:40PM2.61m
6:02AM2.53m
6:37PM2.60m
7:03AM2.41m
7:33PM2.59m
8:05AM2.33m
8:28PM2.59m
9:03AM2.28m
Low Tide
2:30PM0.27m
3:15AM0.05m
3:24PM0.22m
4:09AM-0.10m
4:15PM0.17m
5:02AM-0.23m
5:07PM0.12m
5:55AM-0.31m
5:59PM0.08m
6:48AM-0.34m
6:53PM0.06m
7:40AM-0.34m
7:48PM0.06m
8:33AM-0.28m
8:44PM0.09m
9:26AM-0.19m
9:43PM0.14m
10:21AM-0.08m
10:45PM0.19m
11:17AM0.04m
11:46PM0.23m
12:11PM0.16m
00:47AM0.26m
1:06PM0.27m
1:48AM0.27m
2:01PM0.36m
2:47AM0.26m
2:55PM0.43m
Wave
Height (m)
Direction
Period (s)
0.4
SE
6
0.4
SE
7
0.4
SE
8
0.4
SE
8
0.4
SE
7
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
1.5
SE
5
0.7
SE
5
0.4
SE
5
0.4
ESE
8
0.4
ESE
7
0.4
ESE
7
0.7
SSE
3
0.5
ESE
7
0.3
ESE
6
0.5
ESE
6
0.6
SE
4
0.4
ESE
6
1.1
SE
4
1.1
SSE
6
0.8
SSE
7
0.6
SSE
7
0.4
SE
8
0.3
SSE
8
0.6
SE
3
0.8
SE
5
0.6
SSE
7
0.4
SSE
9
0.4
SE
9
0.4
SE
8
0.6
SE
3
0.6
SE
4
0.4
SE
7
0.4
SE
6
0.3
SE
6
0.4
SE
6
0.6
SE
4
0.5
SE
5
0.4
SE
6
0.4
ESE
6
0.4
SE
6
0.3
ESE
6
0.5
SSE
3
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
light rain
rain showers
part cloud
part cloud
part cloud
clear
rain showers
clear
clear
clear
clear
part cloud
rain showers
part cloud
clear
clear
clear
part cloud
part cloud
cloud
light rain
clear
clear
rain showers
thunderstorm
clear
cloud
clear
clear
part cloud
some clouds
some clouds
some clouds
some clouds
rain shwrs
rain shwrs
some clouds
some clouds
clear
clear
some clouds
some clouds
clear
some clouds
clear
some clouds
some clouds
light rain
rain shwrs
some clouds
some clouds
some clouds
clear
rain shwrs
clear
clear
clear
clear
some clouds
rain shwrs
some clouds
clear
clear
clear
some clouds
some clouds
cloudy
light rain
clear
clear
rain shwrs
risk tstorm
clear
cloudy
clear
clear
some clouds
km/h
5
WNW
10
ESE
0
ENE
10
E
15
ENE
10
NE
5
NNE
15
SE
5
SE
15
SSE
30
SSE
15
WSW
10
WNW
5
SE
10
W
5
SW
20
SSE
10
SSW
5
SSW
20
SSE
15
SSW
15
SSE
25
SSE
25
SW
30
W
20
WNW
10
W
10
S
20
SE
5
WSW
25
NW
20
NW
10
WNW
10
SE
20
SSE
5
SSW
10
SW
10
S
10
SSW
15
S
10
WSW
10
NNE
5
SE
15
SSE
10
NNW
5
NE
20
SSE
2
1
3
1
1
11
2
2
2
max °C
27
27
19
22
20
16
21
24
18
23
23
24
24
25
19
23
24
19
17
20
18
21
21
24
28
28
23
24
23
22
23
26
23
20
20
18
19
18
16
23
21
21
18
17
16
20
21
Moonrise
2:02
2:31
3:09
3:57
5:01
6:16
7:38
8:58
10:15
11:27
12:36
1:42
2:48
3:53
4:58
6:02
Moonset
4:33
5:54
7:17
8:33
9:37
10:26
11:03
11:32
11:56
12:16
12:36
12:55
1:16
1:40
2:08
Sunrise
5:03
5:03
5:03
5:01
5:01
5:01
5:01
5:03
5:03
5:03
5:03
5:03
5:03
5:03
5:03
5:03
Sunset
8:22
8:22
8:22
8:22
8:22
8:23
8:23
8:24
8:24
8:24
8:24
8:25
8:25
8:25
8:25
8:25
Today's sea temperature in Seavey Island, Portsmouth Harbor is
14.1° C
(Statistics for 11 Jun 1981-2005 – mean: 13.2 max: 15.3 min: 11.3°C)
Issued (local time): 7 am Thursday 11 Jun 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest