Seavey Island, Portsmouth Harbor (sub) Sea Conditions and Tide Table

Seavey Island, Portsmouth Harbor (sub) 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 06:28 AM and sunset is at 07:06 PM.

Days 1–3 Weather Summary

Light rain (total 6mm), mostly falling on Fri morning. Cool air temperatures (max 10°C on Sun afternoon, min 1°C on Fri night). Winds decreasing (fresh winds from the NW on Fri night, light winds from the NW by Sun night).

Days 4–6 Weather Summary

Moderate rain (total 16mm), heaviest on Wed afternoon giving way to a moderate fall of snow, heaviest on Wed night. Low air temperatures (max 8°C on Mon afternoon, min 1°C on Tue night). Winds increasing (calm on Mon night, strong winds from the ENE by Wed night).

Days 7–9 Weather Summary

A dusting of snow on Thu morning. Freezing level rising with drizzle on Fri morning. Freeze-thaw conditions (max 6°C on Fri afternoon, min 0°C on Sat morning). Winds decreasing (fresh winds from the N on Fri afternoon, calm by Sat night).

Days 10–12 Weather Summary

Moderate rain (total 10mm) heaviest on Tue night, then becoming colder with a dusting of snow on Wed morning. Warm (max 23°C on Tue afternoon, min 1°C on Wed morning). Winds increasing (light winds from the WNW on Sun night, fresh winds from the NNE by Wed morning).

Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
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
2:56PM2.29m
3:01AM2.54m
3:38PM2.21m
3:44AM2.51m
4:26PM2.15m
4:34AM2.48m
5:23PM2.11m
5:33AM2.47m
6:26PM2.12m
6:38AM2.49m
7:33PM2.20m
7:47AM2.57m
8:37PM2.35m
8:54AM2.68m
9:35PM2.55m
9:54AM2.81m
10:28PM2.76m
10:50AM2.91m
11:17PM2.94m
11:44AM2.96m
00:05AM3.07m
12:35PM2.94m
00:52AM3.12m
Low Tide
8:42AM0.11m
8:48PM0.33m
9:23AM0.14m
9:29PM0.39m
10:10AM0.18m
10:18PM0.45m
11:04AM0.21m
11:14PM0.48m
12:06PM0.22m
00:19AM0.46m
1:12PM0.18m
1:28AM0.38m
2:17PM0.08m
2:35AM0.22m
3:16PM-0.05m
3:37AM0.02m
4:11PM-0.18m
4:34AM-0.18m
5:01PM-0.28m
5:27AM-0.35m
5:49PM-0.31m
6:19AM-0.45m
6:36PM-0.29m
Wave
height (m) 
direction
period (s) 
1.3
ESE
10
1.2
ESE
11
1.2
ESE
11
1
ESE
11
0.9
ESE
11
0.7
ESE
11
0.8
ESE
11
0.6
ESE
10
0.4
ESE
10
0.4
ESE
10
0.4
ESE
10
0.3
ESE
10
0.3
ESE
9
0.4
ESE
9
0.8
ESE
4
1.7
E
6
3
E
8
4
E
10
3
E
11
2.2
E
10
1.4
E
10
1.6
E
10
1.7
ENE
9
1.6
E
9
1.6
E
9
1.2
E
9
0.9
E
9
0.7
E
10
0.6
E
10
0.5
E
9
0.4
E
11
0.4
E
11
0.4
E
11
0.5
E
11
0.6
SSE
5
0.8
ENE
3
light rain
light rain
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
cloud
cloud
light snow
light rain
mod rain
heavy snow
light snow
light snow
cloud
rain showers
part cloud
part cloud
part cloud
cloud
clear
clear
clear
clear
clear
clear
clear
rain showers
thunderstorm
thunderstorm
light rain
light rain
some clouds
clear
clear
some clouds
some clouds
some clouds
some clouds
clear
clear
clear
cloudy
cloudy
light snow
light rain
mod rain
heavy snow
light snow
light snow
cloudy
rain shwrs
some clouds
some clouds
some clouds
cloudy
clear
clear
clear
clear
clear
clear
clear
rain shwrs
risk tstorm
risk tstorm
 km/h
20
NW
30
NW
35
WNW
35
WNW
25
WNW
20
WNW
25
WNW
20
NW
5
NW
5
SE
15
SSE
0
E
15
ESE
15
SE
20
E
30
E
35
ENE
45
NE
30
NNW
25
NW
20
NW
35
NNW
30
N
20
N
25
NNE
10
N
10
WSW
10
WSW
15
WNW
10
NNW
10
WSW
10
WSW
10
WSW
20
WSW
25
WSW
20
NE
 mm 
4
2.0
4
4
8
1.0
1.0
2.0
7
max°C
4
6
6
5
8
5
7
10
7
7
8
6
6
5
3
3
3
2
1
2
2
5
6
5
3
5
5
9
16
14
16
21
19
19
23
16
Moonrise
12:00
1:07
2:11
3:05
3:50
4:27
4:56
5:21
5:44
6:07
6:31
Moonset
8:12
8:45
9:29
10:24
11:30
12:45
2:05
3:27
4:47
6:08
7:29
8:50
Sunrise
6:28
6:26
6:24
6:24
6:22
6:20
6:18
6:16
6:15
6:13
6:11
6:09
Sunset
7:06
7:07
7:07
7:08
7:10
7:12
7:13
7:14
7:15
7:15
7:17
7:19
Today's sea temperature in Seavey Island, Portsmouth Harbor (sub) is 4.8 °C (Statistics for 29 Mar 1981-2005 – mean: 3.8 max: 5.1 min: 2.4°C)
Nearest