Merrimacport, Merrimack River Sea Conditions and Tide Table

Merrimacport, Merrimack River 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 — and sunset is at 06:52 PM.

Days 1–4 Weather Summary

Moderate rain (total 18mm), heaviest on Fri night. Icy conditions (max 10°C on Fri afternoon, min -2°C on Wed night). Wind will be generally light.

Days 5–7 Weather Summary

Mild at first with light rain (total 2mm) on Sun night followed by colder weather and light fall of snow, heaviest on Mon morning. Icy conditions (max 11°C on Sun morning, min -5°C on Mon night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Freeze-thaw conditions (max 15°C on Fri morning, min -7°C on Wed night). Winds increasing (calm on Thu morning, fresh winds from the SSW by Thu night).

Days 11–13 Weather Summary

Drizzle on Fri afternoon followed by colder weather and a heavy fall of snow, heaviest during Fri night. Freeze-thaw conditions (max 16°C on Fri afternoon, min -12°C on Sun night). Wind will be generally light.

Wed
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
1
Thursday
2
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
night
Wave Height Map
High Tide
12:50PM2.26m
1:13AM2.19m
1:36PM2.29m
1:58AM2.32m
2:23PM2.30m
2:43AM2.42m
3:10PM2.26m
3:30AM2.48m
3:59PM2.20m
4:20AM2.50m
4:52PM2.11m
5:14AM2.47m
5:48PM2.01m
6:10AM2.42m
6:46PM1.93m
7:10AM2.35m
7:47PM1.87m
8:11AM2.28m
8:51PM1.86m
9:16AM2.23m
9:54PM1.90m
10:17AM2.21m
10:51PM1.97m
11:12AM2.19m
11:41PM2.05m
12:02PM2.16m
00:26AM2.12m
12:48PM2.13m
Low Tide
7:34PM0.02m
7:52AM-0.01m
8:16PM-0.01m
8:38AM-0.08m
8:57PM-0.02m
9:25AM-0.13m
9:41PM0.01m
10:16AM-0.13m
10:29PM0.05m
11:11AM-0.11m
11:22PM0.11m
12:08PM-0.07m
00:19AM0.16m
1:07PM-0.02m
1:19AM0.21m
2:07PM0.02m
2:21AM0.23m
3:08PM0.05m
3:24AM0.21m
4:06PM0.04m
4:24AM0.17m
5:00PM0.03m
5:18AM0.12m
5:50PM0.03m
6:10AM0.07m
6:37PM0.04m
6:59AM0.04m
7:21PM0.06m
Wave
height (m) 
direction
period (s) 
0.7
ESE
10
0.8
ESE
10
0.7
ESE
9
0.8
ESE
9
0.8
ESE
8
0.4
ESE
8
0.6
ESE
8
1
E
9
0.8
E
8
0.8
E
8
0.6
E
8
0.6
E
8
0.5
E
8
0.8
E
5
1.3
ENE
6
1
ENE
6
1.5
ENE
6
1.6
ENE
7
1.1
ENE
7
1.1
E
8
1
E
9
0.9
E
9
0.7
E
9
0.3
E
9
0.8
SSE
4
1.5
S
5
1.3
S
5
1.1
S
5
1.4
NE
6
2
NE
7
2.1
ENE
8
2
ENE
9
1.3
ENE
9
1.2
ESE
12
1
ESE
11
1
ESE
11
1
ESE
10
0.8
ESE
10
0.7
ESE
9
0.8
NNW
4
0.6
NNE
5
0.4
E
9
0.3
E
8
0.4
E
8
0.3
E
9
0.3
E
10
0.4
E
10
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
heavy rain
light rain
cloud
cloud
cloud
cloud
mod snow
mod snow
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
light rain
heavy snow
light snow
light snow
light snow
cloud
cloud
clear
part cloud
cloud
clear
part cloud
part cloud
clear
clear
cloud
cloud
cloud
cloud
part cloud
some clouds
some clouds
clear
some clouds
clear
clear
some clouds
heavy rain
light rain
cloudy
cloudy
cloudy
cloudy
mod snow
mod snow
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
light rain
heavy snow
light snow
light snow
light snow
cloudy
cloudy
clear
some clouds
cloudy
clear
some clouds
some clouds
clear
clear
cloudy
cloudy
cloudy
cloudy
some clouds
 km/h
5
SSW
10
S
15
S
15
SE
10
SW
10
WSW
10
SSE
10
SW
10
NNE
5
E
5
S
15
WSW
10
WNW
5
NNE
10
NNE
5
ENE
15
N
15
N
10
WNW
10
SW
20
W
20
WNW
15
WNW
10
S
20
S
30
SW
25
SW
20
W
10
N
20
NNE
15
NNE
15
NW
15
WNW
15
WNW
15
W
20
NW
20
NW
10
WNW
20
NW
15
NNW
5
WSW
5
W
10
SW
10
S
5
ENE
5
ENE
5
N
 mm 
17
1
2
1
max°C
1
-1
1
4
3
5
10
7
3
5
5
11
10
7
0
1
1
-1
3
3
2
5
-1
-2
6
12
15
16
0
-7
-6
-7
-7
-5
-7
-8
-6
-8
-5
-1
-2
-1
4
3
2
3
2
Moonrise
6:54
7:16
7:42
8:13
8:52
9:42
10:44
11:55
1:11
2:26
3:39
4:49
5:57
7:03
8:09
Moonset
6:44
7:58
9:15
10:35
11:55
1:12
2:20
3:16
3:59
4:33
4:59
5:22
5:42
6:01
6:20
Sunrise
6:48
6:48
6:46
6:43
6:41
6:41
6:39
6:37
6:35
6:33
6:31
6:30
6:28
6:26
6:24
Sunset
6:52
6:53
6:54
6:55
6:58
6:59
7:00
7:00
7:01
7:02
7:04
7:06
7:07
7:07
7:08
7:09
Today's sea temperature in Merrimacport, Merrimack River is
3.3° C
(Statistics for 18 Mar 1981-2005 – mean: 3.4 max: 4.7 min: 2.0°C)
Issued (local time): 1 pm Wednesday 18 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest