Riverside, Merrimack River Sea Conditions and Tide Table

Riverside, 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 07:13 AM and sunset is at 04:15 PM.

Days 1–3 Weather Summary

A dusting of new snow. Icy conditions (max 4°C on Thu morning, min -12°C on Thu night). Wind will be generally light.

Days 4–6 Weather Summary

A dusting of snow giving way to moderate rain (total 10mm) heaviest on Sun night. Icy conditions (max 6°C on Mon afternoon, min -4°C on Mon night). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 1°C on Wed morning, min -14°C on Thu night). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 2mm), mostly falling on Sat afternoon. Freeze-thaw conditions (max 7°C on Sat morning, min -10°C on Mon night). Wind will be generally light.

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
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
4:55PM1.82m
5:25AM1.60m
5:45PM1.77m
6:15AM1.66m
6:38PM1.72m
7:08AM1.73m
7:31PM1.65m
8:01AM1.80m
8:26PM1.58m
8:55AM1.87m
9:22PM1.53m
9:50AM1.93m
10:17PM1.48m
10:44AM1.97m
11:13PM1.47m
11:39AM2.01m
00:08AM1.48m
12:33PM2.03m
1:00AM1.51m
1:24PM2.02m
1:51AM1.53m
2:14PM1.99m
2:40AM1.56m
Low Tide
11:25AM0.24m
00:12AM0.09m
12:19PM0.23m
00:59AM0.10m
1:21PM0.20m
1:49AM0.11m
2:24PM0.15m
2:42AM0.12m
3:26PM0.09m
3:35AM0.11m
4:25PM0.01m
4:29AM0.09m
5:22PM-0.06m
5:23AM0.08m
6:17PM-0.12m
6:17AM0.04m
7:11PM-0.16m
7:11AM0.01m
8:04PM-0.18m
8:05AM-0.02m
8:54PM-0.19m
8:57AM-0.04m
9:43PM-0.17m
Wave
height (m) 
direction
period (s) 
part cloud
clear
clear
part cloud
cloud
light snow
part cloud
clear
clear
clear
cloud
light snow
light rain
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
light rain
clear
part cloud
cloud
cloud
cloud
part cloud
clear
some clouds
clear
clear
some clouds
cloudy
light snow
some clouds
clear
clear
clear
cloudy
light snow
light rain
light rain
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
some clouds
clear
some clouds
some clouds
some clouds
some clouds
cloudy
light rain
clear
some clouds
cloudy
cloudy
cloudy
some clouds
clear
 km/h
10
WSW
25
NW
20
NW
10
NW
0
N
5
N
10
N
5
N
5
WNW
10
NW
5
WSW
5
SSW
10
SSE
15
SSW
25
W
25
W
25
W
20
W
15
WSW
15
SW
15
SW
20
NW
15
NW
15
NW
5
W
5
WSW
10
SSW
15
SSW
20
WSW
10
WNW
10
NNW
5
NNW
5
NW
5
WNW
15
NNW
15
NNW
 mm 
5
3
2
2
max°C
4
0
-9
-8
-7
-7
-4
-3
-5
2
2
2
4
6
1
-2
-3
-3
1
1
1
-2
-6
-12
-10
-7
-2
7
6
4
0
0
-1
1
0
-5
Moonrise
10:39
10:59
11:19
11:41
12:06
12:37
1:18
2:11
3:18
4:34
5:55
7:13
Moonset
10:01
11:11
12:23
1:37
2:56
4:18
5:38
6:49
7:47
8:32
9:05
Sunrise
7:13
7:13
7:13
7:13
7:13
7:13
7:13
7:13
7:13
7:13
7:13
7:13
Sunset
4:15
4:15
4:16
4:16
4:17
4:19
4:20
4:21
4:22
4:22
4:22
4:23
Today's sea temperature in Riverside, Merrimack River is
6.3° C
(Statistics for 25 Dec 1981-2005 – mean: 6.5 max: 8.1 min: 4.6°C)
Issued (local time): 6 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest