South Yarmouth Sea Conditions and Tide Table

South Yarmouth 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 07:05 AM and sunset is at 04:14 PM.

Days 1–3 Weather Summary

Light rain (total 5mm), mostly falling on Tue afternoon. Icy conditions (max 4°C on Tue night, min -6°C on Thu night). Winds increasing (calm on Wed night, near gales from the NNW by Thu night).

Days 4–6 Weather Summary

Light rain (total 7mm), mostly falling on Sun night. Icy conditions (max 7°C on Sun night, min -5°C on Fri morning). Winds decreasing (fresh winds from the N on Fri morning, light winds from the W by Sat night).

Days 7–9 Weather Summary

Mostly dry. Temperatures will be below freezing (max 0°C on Mon morning, min -4°C on Mon afternoon). Winds decreasing (strong winds from the W on Mon night, light winds from the W by Wed night).

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 9°C on Sun morning, min -3°C on Thu morning). Winds increasing (calm on Fri night, fresh winds from the SSW by Sun morning).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
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
night
Wave Height Map
High Tide
2:58PM0.91m
3:38AM0.80m
3:41PM0.90m
4:21AM0.81m
4:27PM0.88m
5:05AM0.83m
5:17PM0.87m
5:53AM0.86m
6:11PM0.85m
6:44AM0.89m
7:09PM0.84m
7:37AM0.93m
8:10PM0.83m
8:33AM0.97m
9:11PM0.84m
9:29AM1.01m
10:10PM0.84m
10:24AM1.04m
11:10PM0.87m
11:21AM1.07m
00:07AM0.89m
12:17PM1.08m
1:02AM0.91m
Low Tide
8:47AM0.10m
9:22PM-0.01m
9:31AM0.10m
10:04PM-0.01m
10:18AM0.09m
10:48PM-0.00m
11:08AM0.09m
11:35PM0.01m
12:03PM0.07m
00:26AM0.02m
1:00PM0.04m
1:20AM0.02m
2:00PM0.00m
2:16AM0.02m
3:00PM-0.04m
3:13AM0.01m
4:00PM-0.09m
4:08AM0.01m
4:56PM-0.12m
5:05AM-0.02m
5:52PM-0.15m
6:00AM-0.03m
6:46PM-0.17m
6:55AM-0.05m
Wave
height (m) 
direction
period (s) 
0.2
E
10
0.2
E
10
0.7
SSE
4
1.2
WNW
4
1.1
NNE
4
0.9
ENE
9
0.9
ENE
10
1
E
10
1.3
NNW
4
1
N
4
0.7
NE
5
0.4
ENE
10
0.8
E
13
0.7
E
13
0.5
E
13
0.4
ENE
12
0.5
E
12
1.2
S
5
1.1
WNW
4
1.2
W
4
1.8
WSW
5
1.4
W
5
1.3
W
5
0.9
W
4
0.6
WNW
4
0.4
WNW
3
0.2
WNW
2
0.6
W
3
1
WSW
4
0.9
WSW
4
0.6
W
3
0.3
SW
4
0.1
SE
7
0.2
ESE
6
0.4
S
3
0.6
SSW
4
cloud
light rain
light rain
part cloud
cloud
cloud
light rain
rain showers
cloud
cloud
cloud
cloud
part cloud
clear
clear
part cloud
light rain
rain showers
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
cloud
clear
clear
part cloud
clear
clear
part cloud
cloudy
light rain
light rain
some clouds
cloudy
cloudy
light rain
rain shwrs
cloudy
cloudy
cloudy
cloudy
some clouds
clear
clear
some clouds
light rain
rain shwrs
some clouds
some clouds
some clouds
clear
some clouds
clear
clear
clear
clear
some clouds
some clouds
cloudy
clear
clear
some clouds
clear
clear
some clouds
 km/h
5
WSW
10
ESE
15
SW
45
NW
40
NNE
5
WNW
30
SW
30
WNW
45
NNW
35
N
25
N
15
NNE
25
NNE
20
N
15
NW
15
WSW
20
SW
35
SSW
40
WNW
40
W
45
W
40
W
40
W
30
WNW
20
WNW
20
WNW
15
W
25
W
30
WSW
25
W
20
W
15
NW
0
SSE
15
S
20
SSW
25
SSW
 mm 
1
2
1
1
1
6
max°C
3
3
4
4
3
2
4
3
-3
-5
-4
-2
-2
-3
-3
1
3
7
0
-2
-3
-2
-1
-3
-2
0
-2
0
1
1
3
3
3
4
6
8
Moonrise
9:45
10:11
10:34
10:55
11:16
11:39
12:05
12:37
1:19
2:12
3:19
4:35
Moonset
7:43
8:51
9:59
11:07
12:18
1:32
2:49
4:10
5:29
6:40
7:39
Sunrise
7:05
7:05
7:05
7:05
7:05
7:05
7:07
7:07
7:07
7:07
7:07
7:07
Sunset
4:14
4:15
4:15
4:15
4:16
4:16
4:17
4:19
4:20
4:21
4:22
4:22
Today's sea temperature in South Yarmouth is
5.5° C
(Statistics for 23 Dec 1981-2005 – mean: 7.5 max: 9.5 min: 6.2°C)
Issued (local time): 12 pm Tuesday 23 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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