Wychmere Harbor, Nantucket Sound Sea Conditions and Tide Table

Wychmere Harbor, Nantucket Sound 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 04:14 PM.

Days 1–4 Weather Summary

Some drizzle, heaviest during Wed afternoon. Icy conditions (max 4°C on Thu morning, min -5°C on Thu night). Winds increasing (light winds from the NW on Wed night, strong winds from the NNW by Thu afternoon).

Days 5–7 Weather Summary

Moderate rain (total 17mm), heaviest on Mon afternoon. Icy conditions (max 8°C on Mon afternoon, min -3°C on Mon night). Winds increasing (light winds from the W on Sun afternoon, strong winds from the W by Mon night).

Days 8–10 Weather Summary

Mostly dry. Freeze-thaw conditions (max 4°C on Thu afternoon, min -3°C on Tue night). Winds decreasing (strong winds from the W on Tue afternoon, light winds from the W by Thu night).

Days 11–13 Weather Summary

A dusting of snow turning to light rain (total 2mm) on Sun night. Freeze-thaw conditions (max 6°C on Sun night, min -7°C on Sat night). Winds increasing (light winds from the WSW on Sun morning, fresh winds from the SW by Sun night).

Wed
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Mon
5
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
Wave Height Map
High Tide
2:44PM1.16m
3:22AM1.05m
3:29PM1.14m
4:06AM1.07m
4:18PM1.12m
4:54AM1.10m
5:12PM1.10m
5:45AM1.14m
6:10PM1.08m
6:38AM1.18m
7:09PM1.07m
7:34AM1.23m
8:12PM1.07m
8:32AM1.28m
9:12PM1.08m
9:28AM1.31m
10:12PM1.10m
10:24AM1.35m
11:09PM1.13m
11:19AM1.37m
00:04AM1.15m
12:14PM1.37m
00:58AM1.16m
Low Tide
8:41PM0.03m
8:54AM0.15m
9:25PM0.03m
9:45AM0.14m
10:13PM0.04m
10:40AM0.11m
11:03PM0.05m
11:37AM0.08m
11:56PM0.06m
12:36PM0.04m
00:51AM0.06m
1:36PM-0.01m
1:49AM0.05m
2:37PM-0.06m
2:45AM0.04m
3:35PM-0.10m
3:43AM0.02m
4:30PM-0.14m
4:38AM-0.01m
5:24PM-0.17m
5:32AM-0.02m
6:16PM-0.17m
6:26AM-0.03m
Wave
height (m) 
direction
period (s) 
1.4
ENE
8
1
E
9
1
E
10
0.9
NNE
6
1.3
NNE
8
1.1
NE
8
0.8
NE
8
0.5
ENE
8
0.7
ENE
6
0.8
ENE
7
0.6
ENE
8
0.6
ENE
8
0.4
ENE
12
0.4
SSE
4
0.6
SSE
4
0.8
SSW
4
1
SW
6
1
W
4
1
W
4
0.8
WNW
4
0.7
W
4
0.6
W
3
0.7
SW
4
0.6
WSW
3
0.5
SW
3
0.4
SSE
5
0.4
N
4
0.6
NNW
3
0.7
N
4
0.5
N
4
0.4
NNE
5
0.4
NNE
5
0.3
NE
5
0.2
E
9
0.6
SSW
3
0.8
SW
4
rain showers
part cloud
cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
clear
clear
part cloud
light rain
light rain
mod rain
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
snow showers
cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
part cloud
rain shwrs
some clouds
cloudy
some clouds
cloudy
cloudy
some clouds
cloudy
cloudy
cloudy
clear
clear
some clouds
light rain
light rain
mod rain
clear
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
snow shwrs
cloudy
some clouds
some clouds
some clouds
some clouds
cloudy
light rain
some clouds
 km/h
35
NNE
10
NW
35
WSW
30
NW
45
NNW
35
N
20
N
10
N
25
NNE
25
N
20
NW
15
NW
15
W
20
SW
30
S
35
SW
40
W
40
W
40
W
35
W
30
W
25
WSW
35
WSW
25
WSW
20
WSW
20
W
20
WNW
30
NW
30
NW
20
WNW
20
NW
20
NW
10
WNW
10
SW
30
SW
30
WSW
 mm 
1
5
5
7
2
max°C
3
1
4
4
-2
-4
-4
-1
0
-2
-2
1
2
5
7
8
4
-1
0
-1
0
1
3
3
4
2
1
-1
-2
-6
-5
-6
-5
-2
6
4
Moonrise
10:33
10:54
11:16
11:38
12:04
12:37
1:18
2:11
3:18
4:35
5:54
Moonset
8:50
9:58
11:07
12:17
1:31
2:49
4:10
5:29
6:40
7:38
8:24
8:58
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
4:17
4:17
4:19
4:20
4:21
4:22
4:22
Today's sea temperature in Wychmere Harbor, Nantucket Sound is
6.5° C
(Statistics for 24 Dec 1981-2005 – mean: 7.4 max: 9.2 min: 6.2°C)
Issued (local time): 6 pm Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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