Merrimack River Entrance Sea Conditions and Tide Table

Merrimack River Entrance 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 06:52 AM and sunset is at 04:09 PM.

Days 1–3 Weather Summary

Light rain (total 4mm), mostly falling on Fri night. Icy conditions (max 9°C on Fri morning, min -1°C on Wed morning). Wind will be generally light.

Days 4–6 Weather Summary

Moderate rain (total 14mm), heaviest on Mon night. Low air temperatures (max 8°C on Mon morning, min 5°C on Sat morning). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 8mm), mostly falling on Tue night. Freeze-thaw conditions (max 7°C on Tue morning, min -1°C on Thu night). Wind will be generally light.

Days 10–12 Weather Summary

Mostly dry. Very mild (max 11°C on Sun morning, min 1°C on Fri morning). Wind will be generally light.

Wednesday
29
Thursday
30
Friday
1
Saturday
2
Sunday
3
Monday
4
Tuesday
5
Wednesday
6
Thursday
7
Friday
8
Saturday
9
Sunday
10
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
12:27PM2.87m
1:08AM2.43m
1:12PM2.78m
1:54AM2.35m
1:58PM2.67m
2:41AM2.28m
2:45PM2.56m
3:30AM2.23m
3:36PM2.45m
4:21AM2.20m
4:29PM2.36m
5:13AM2.21m
5:25PM2.29m
6:03AM2.24m
6:20PM2.23m
6:51AM2.30m
7:13PM2.21m
7:35AM2.38m
8:02PM2.22m
8:16AM2.47m
8:47PM2.25m
8:57AM2.57m
9:31PM2.29m
Low Tide
6:58PM-0.20m
7:02AM0.23m
7:44PM-0.07m
7:48AM0.34m
8:31PM0.07m
8:36AM0.45m
9:19PM0.20m
9:28AM0.54m
10:09PM0.30m
10:22AM0.58m
10:59PM0.38m
11:19AM0.58m
11:49PM0.41m
12:15PM0.53m
00:38AM0.42m
1:09PM0.43m
1:23AM0.40m
1:57PM0.31m
2:06AM0.37m
2:43PM0.17m
2:47AM0.32m
3:26PM0.04m
3:28AM0.27m
Wave
height (m) 
direction
period (s) 
0.7
E
10
0.6
E
10
0.5
E
9
0.5
E
9
0.4
SSE
4
0.8
SSW
4
0.4
SSW
4
0.3
SE
5
0.3
E
11
0.2
E
12
0.3
E
12
0.4
E
11
0.5
ENE
4
0.4
E
10
0.4
E
10
0.3
E
10
0.6
E
3
1
E
5
1.4
E
7
1.6
E
8
1.6
E
9
1.5
E
9
1.4
E
10
1.4
E
10
1.2
E
9
1
E
9
1.1
E
9
1.1
E
10
1.1
E
10
0.9
E
10
0.8
E
11
0.7
E
11
0.7
E
10
0.8
SE
6
0.7
ESE
6
0.5
E
9
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
light rain
rain showers
part cloud
light rain
cloud
cloud
light rain
part cloud
cloud
light rain
heavy rain
light rain
light rain
light rain
cloud
cloud
part cloud
cloud
rain showers
part cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
some clouds
some clouds
clear
clear
clear
some clouds
some clouds
light rain
rain shwrs
some clouds
light rain
cloudy
cloudy
light rain
some clouds
cloudy
light rain
heavy rain
light rain
light rain
light rain
cloudy
cloudy
some clouds
cloudy
rain shwrs
some clouds
some clouds
clear
clear
clear
some clouds
clear
some clouds
some clouds
clear
 km/h
25
W
15
WSW
20
SW
20
WSW
15
SW
25
SW
15
SW
10
SW
15
SW
5
W
5
E
15
ENE
10
E
5
E
5
NW
10
ENE
20
E
20
NE
15
E
10
ENE
15
N
15
NNE
20
NNE
20
N
15
N
15
NNW
15
WNW
10
W
10
WNW
10
WNW
5
WNW
10
SSW
15
SSW
20
SSW
20
SW
15
SW
 mm 
1.0
3
1.0
1.0
1.0
11
2.0
2.0
3
1.0
max°C
2
2
0
5
6
4
9
8
6
6
5
6
6
7
7
8
8
8
7
7
6
5
5
4
3
3
0
4
4
1
4
4
4
11
11
7
Moonrise
5:49
6:51
7:56
9:02
10:06
11:09
12:10
1:13
2:16
3:22
4:32
Moonset
9:27
10:17
10:58
11:29
11:55
12:16
12:35
12:53
1:11
1:29
1:51
2:17
Sunrise
6:52
6:52
6:54
6:54
6:56
6:56
6:58
6:58
7:00
7:01
7:01
7:01
Sunset
4:09
4:09
4:09
4:08
4:08
4:08
4:08
4:08
4:08
4:08
4:08
4:08
Today's sea temperature in Merrimack River Entrance is 9.7 °C (Statistics for 29 Nov 1981-2005 – mean: 8.8 max: 10.2 min: 7.6°C)
Nearest