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 06:47 AM and sunset is at 06:53 PM.

Days 1–3 Weather Summary

A dusting of new snow. Icy conditions (max 9°C on Wed afternoon, min -7°C on Thu night). Winds increasing (light winds from the WSW on Tue night, fresh winds from the WNW by Thu afternoon).

Days 4–6 Weather Summary

A dusting of snow. Milder later with heavy rain (total 46mm) on Sat night. Icy conditions (max 9°C on Sat afternoon, min -8°C on Fri morning). Winds increasing (calm on Fri night, fresh winds from the SSE by Sat afternoon).

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 10°C on Wed night, min -4°C on Mon morning). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Sat afternoon. Freeze-thaw conditions (max 16°C on Thu afternoon, min -5°C on Sat night). Winds increasing (calm on Fri afternoon, fresh winds from the N by Sat afternoon).

Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
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
7:57AM2.44m
8:47PM2.15m
9:01AM2.45m
9:42PM2.22m
9:55AM2.48m
10:28PM2.29m
10:40AM2.51m
11:08PM2.35m
11:20AM2.53m
11:43PM2.40m
11:57AM2.53m
00:16AM2.45m
12:32PM2.51m
00:47AM2.49m
1:05PM2.49m
1:17AM2.53m
1:39PM2.45m
1:49AM2.55m
2:14PM2.39m
2:22AM2.55m
2:52PM2.32m
3:01AM2.52m
3:36PM2.23m
3:46AM2.48m
Low Tide
2:23PM0.25m
2:37AM0.48m
3:24PM0.23m
3:36AM0.42m
4:13PM0.20m
4:24AM0.34m
4:55PM0.17m
5:05AM0.27m
5:30PM0.16m
5:41AM0.21m
6:03PM0.16m
6:16AM0.16m
6:34PM0.17m
6:51AM0.12m
7:06PM0.19m
7:25AM0.09m
7:38PM0.23m
8:01AM0.09m
8:12PM0.28m
8:41AM0.11m
8:50PM0.35m
9:26AM0.16m
9:35PM0.43m
Wave
height (m) 
direction
period (s) 
0.6
WNW
3
0.4
ESE
8
0.3
ESE
8
0.4
ESE
9
0.4
SE
8
0.8
WSW
3
0.9
W
4
0.9
WNW
4
0.9
WNW
4
0.4
WNW
3
0.2
ESE
10
0.5
S
4
1.1
SE
5
2.5
SE
7
1.8
SE
9
1.3
SE
10
1.2
SE
11
1.1
SE
11
1.5
SE
10
1.4
SE
10
1.7
ESE
10
1.9
ESE
10
1.8
ESE
10
1.6
ESE
10
1.3
ESE
9
1.2
ESE
9
1
ESE
9
0.9
SE
9
0.9
SE
9
0.8
ESE
9
0.7
ESE
9
0.7
ESE
9
0.8
ESE
9
0.9
SE
6
1.6
NNE
5
1.6
NE
8
clear
cloud
cloud
part cloud
part cloud
snow showers
clear
part cloud
clear
clear
clear
part cloud
light snow
heavy rain
rain showers
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
clear
clear
clear
rain showers
light rain
light snow
part cloud
clear
cloudy
cloudy
some clouds
some clouds
snow shwrs
clear
some clouds
clear
clear
clear
some clouds
light snow
heavy rain
rain shwrs
clear
clear
clear
some clouds
some clouds
clear
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
clear
clear
clear
rain shwrs
light rain
light snow
some clouds
 km/h
25
WNW
15
WNW
10
SW
15
SW
15
WSW
30
W
35
W
30
WNW
30
WNW
20
WNW
10
WNW
10
SSW
25
SE
35
SSE
30
WNW
25
NW
20
NW
15
NNE
20
ENE
15
ENE
10
NE
15
ENE
10
E
5
E
0
NNE
5
S
10
SW
15
WSW
15
WNW
15
WNW
10
NW
10
SSE
10
S
5
SW
35
N
25
NNW
 mm 
4
15
27
4
1.0
1.0
max°C
3
6
2
7
9
5
-1
1
-2
-3
5
4
3
9
8
-2
1
-2
-3
-2
-2
0
1
2
2
5
10
13
16
11
6
10
6
7
2
0
Moonrise
1:15
2:21
3:26
4:30
5:32
6:34
7:36
8:39
9:44
10:51
12:00
Moonset
4:32
5:06
5:33
5:54
6:14
6:31
6:48
7:05
7:24
7:46
8:12
8:45
Sunrise
6:47
6:45
6:43
6:41
6:39
6:37
6:35
6:33
6:31
6:31
6:28
6:26
Sunset
6:53
6:54
6:57
6:58
6:59
7:00
7:00
7:01
7:04
7:05
7:06
7:07
Today's sea temperature in Seavey Island, Portsmouth Harbor is 4.8 °C (Statistics for 19 Mar 1981-2005 – mean: 3.3 max: 4.5 min: 1.9°C)
Nearest