Gerrish Island, Portsmouth Harbor Sea Conditions and Tide Table

Gerrish 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 06:31 AM and sunset is at 05:21 PM.

Days 1–3 Weather Summary

Light rain (total 6mm), mostly falling on Fri morning. Icy conditions (max 3°C on Fri morning, min -2°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

A dusting of new snow. Icy conditions (max 8°C on Mon morning, min -10°C on Sat night). Winds increasing (light winds from the WNW on Fri night, fresh winds from the WNW by Sat afternoon).

Days 7–9 Weather Summary

A dusting of snow. Milder later with heavy rain (total 30mm) on Tue night. Freeze-thaw conditions (max 13°C on Wed night, min -1°C on Mon night). Winds increasing (calm on Wed afternoon, strong winds from the WNW by Thu afternoon).

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 5°C on Sat morning, min -9°C on Thu night). Winds decreasing (strong winds from the WNW on Thu night, light winds from the E by Sat night).

Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
1
Saturday
2
Sun
3
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
High Tide
8:59AM2.69m
9:40PM2.40m
9:46AM2.73m
10:21PM2.47m
10:28AM2.76m
10:58PM2.52m
11:05AM2.77m
11:31PM2.55m
11:39AM2.75m
00:02AM2.58m
12:13PM2.70m
00:32AM2.60m
12:47PM2.63m
1:03AM2.61m
1:22PM2.54m
1:36AM2.60m
1:59PM2.44m
2:12AM2.59m
2:41PM2.34m
2:54AM2.57m
3:29PM2.24m
3:42AM2.55m
4:25PM2.17m
Low Tide
3:25PM0.07m
3:30AM0.31m
4:08PM0.04m
4:13AM0.25m
4:46PM0.03m
4:52AM0.20m
5:20PM0.04m
5:28AM0.16m
5:52PM0.06m
6:02AM0.14m
6:22PM0.10m
6:36AM0.15m
6:52PM0.16m
7:11AM0.16m
7:24PM0.22m
7:48AM0.20m
7:59PM0.30m
8:30AM0.24m
8:39PM0.38m
9:16AM0.28m
9:25PM0.45m
10:11AM0.31m
Wave
height (m) 
direction
period (s) 
0.3
SE
7
0.4
SE
10
0.5
SE
9
0.8
ESE
8
1.3
ESE
11
1.7
ESE
11
1.6
ESE
10
1.5
ESE
10
1.2
ESE
10
1
ESE
9
1.1
ESE
10
1
ESE
10
0.7
SE
10
0.8
ESE
10
1.1
SE
10
1
SE
9
0.9
SE
9
0.5
SE
9
0.8
SE
8
1.1
ESE
5
1.5
ESE
7
1.4
ESE
7
1.3
ESE
8
1.3
SE
8
1.9
SSE
8
1.4
SE
9
1
W
4
0.9
WNW
4
0.8
WNW
4
0.4
SE
9
0.2
ESE
9
0.2
ESE
8
0.4
ENE
3
0.2
ESE
9
0.4
SE
3
part cloud
part cloud
clear
clear
part cloud
light rain
light rain
light rain
part cloud
part cloud
clear
clear
clear
part cloud
light snow
cloud
clear
clear
cloud
cloud
light snow
mod rain
mod rain
light rain
light rain
rain showers
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
some clouds
some clouds
clear
clear
some clouds
light rain
light rain
light rain
some clouds
some clouds
clear
clear
clear
some clouds
light snow
cloudy
clear
clear
cloudy
cloudy
light snow
mod rain
mod rain
light rain
light rain
rain shwrs
clear
clear
clear
some clouds
clear
clear
clear
some clouds
clear
 km/h
10
S
15
SSE
5
SSW
10
SSE
10
SE
15
SSW
15
S
10
NW
10
WNW
30
NW
35
WNW
20
WNW
15
WSW
20
SW
25
SW
20
SW
25
W
10
WNW
20
ESE
25
ESE
20
E
10
NNE
5
NNE
25
S
40
SSW
35
W
35
WNW
35
WNW
30
WNW
15
WSW
15
WNW
10
NNE
10
ENE
10
SE
15
SSE
 mm 
1.0
4
1.0
10
6
6
2.0
3
3
max°C
-1
-1
-1
1
1
2
3
3
2
-3
-5
-10
1
4
4
8
7
3
1
0
4
4
5
13
13
2
-5
-5
-4
-2
5
4
0
0
2
Moonrise
2:24
3:30
4:35
5:38
6:40
7:41
8:43
9:46
10:52
12:00
1:09
Moonset
5:30
6:02
6:27
6:48
7:07
7:24
7:41
7:58
8:18
8:41
9:10
9:46
Sunrise
6:31
6:28
6:28
6:26
6:24
6:22
6:20
6:20
6:18
6:16
6:15
6:13
Sunset
5:21
5:22
5:23
5:24
5:25
5:28
5:29
5:30
5:31
5:32
5:34
5:35
Today's sea temperature in Gerrish Island, Portsmouth Harbor is 3.5 °C (Statistics for 21 Feb 1981-2005 – mean: 3.1 max: 4.2 min: 1.8°C)
Nearest