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 05:39 AM and sunset is at 07:35 PM.

Days 1–3 Weather Summary

Light rain (total 7mm), mostly falling on Wed night. Cool air temperatures (max 12°C on Fri night, min 6°C on Wed morning). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 12°C on Mon morning, min 8°C on Sat morning). Winds increasing (light winds from the W on Sat morning, fresh winds from the SSW by Mon afternoon).

Days 7–9 Weather Summary

Light rain (total 8mm), mostly falling on Tue night. Very mild (max 14°C on Tue night, min 9°C on Wed afternoon). Winds decreasing (strong winds from the SSW on Tue afternoon, light winds from the NW by Wed morning).

Days 10–12 Weather Summary

Mostly dry. Very mild (max 14°C on Fri afternoon, min 8°C on Sun night). Winds decreasing (fresh winds from the SW on Sat afternoon, light winds from the W by Sun afternoon).

Wednesday
29
Thursday
30
Friday
1
Saturday
2
Sunday
3
Monday
4
Tuesday
5
Wednesday
6
Thursday
7
Friday
8
Saturday
9
Sunday
10
Monday
11
Tuesday
12
Wednesday
13
Thu
14
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
AM
PM
Wave Height Map
High Tide
11:32AM1.14m
11:46PM1.21m
12:15PM1.13m
00:23AM1.22m
12:56PM1.12m
1:00AM1.22m
1:36PM1.10m
1:38AM1.21m
2:16PM1.08m
2:16AM1.19m
2:55PM1.05m
2:56AM1.18m
3:36PM1.03m
3:36AM1.15m
4:18PM1.00m
4:20AM1.12m
5:04PM0.98m
5:07AM1.10m
5:53PM0.98m
5:59AM1.08m
6:43PM0.99m
6:52AM1.07m
7:33PM1.02m
7:47AM1.08m
8:23PM1.08m
8:42AM1.10m
9:12PM1.14m
9:38AM1.12m
Low Tide
5:05PM0.09m
5:34AM0.02m
5:45PM0.10m
6:15AM0.01m
6:24PM0.12m
6:55AM0.01m
7:02PM0.14m
7:34AM0.02m
7:40PM0.16m
8:13AM0.04m
8:20PM0.19m
8:53AM0.07m
9:00PM0.21m
9:35AM0.10m
9:43PM0.24m
10:20AM0.13m
10:30PM0.26m
11:08AM0.15m
11:22PM0.27m
11:59AM0.16m
00:16AM0.26m
12:49PM0.16m
1:11AM0.22m
1:39PM0.14m
2:06AM0.17m
2:30PM0.12m
3:01AM0.10m
3:21PM0.09m
Wave
height (m) 
direction
period (s) 
1.1
E
10
1
E
10
1
E
10
0.9
E
10
0.8
E
10
0.7
E
10
0.7
E
9
0.6
E
9
0.7
E
9
0.6
E
10
0.7
E
10
0.5
E
10
0.4
E
9
0.6
E
9
0.6
E
9
0.5
ESE
9
0.8
SSE
5
0.7
S
4
1.1
S
4
1.3
S
5
0.9
SSW
4
0.4
ESE
8
0.4
ESE
8
0.3
ESE
8
0.5
SE
3
0.8
SSE
4
0.8
SSE
5
0.6
NE
5
0.6
ESE
8
0.6
SW
5
0.5
WSW
3
0.8
SW
4
0.3
S
4
0.4
SW
4
0.4
SE
6
0.5
WNW
3
0.4
SSE
4
0.3
E
12
0.2
E
11
0.6
NNE
4
0.7
NE
5
0.7
ENE
6
0.6
ENE
6
0.4
ENE
5
0.3
E
10
0.2
E
9
0.2
E
9
part cloud
part cloud
light rain
light rain
light rain
cloud
clear
cloud
clear
clear
cloud
part cloud
clear
part cloud
clear
clear
clear
clear
cloud
cloud
light rain
cloud
rain showers
cloud
light rain
cloud
light rain
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
some clouds
some clouds
light rain
light rain
light rain
cloudy
clear
cloudy
clear
clear
cloudy
some clouds
clear
some clouds
clear
clear
clear
clear
cloudy
cloudy
light rain
cloudy
rain shwrs
cloudy
light rain
cloudy
light rain
clear
clear
clear
some clouds
some clouds
clear
clear
some clouds
clear
clear
some clouds
clear
clear
some clouds
some clouds
some clouds
clear
clear
clear
clear
 km/h
20
NNE
10
E
15
SE
10
S
10
SW
10
WNW
15
WNW
15
WNW
25
W
10
W
25
SSW
10
WNW
15
WNW
30
WSW
20
W
20
SW
30
SSW
30
SSW
45
SSW
50
SSW
35
SW
10
NNE
10
SE
10
S
25
S
30
S
25
SSW
20
W
20
WNW
25
W
25
WSW
30
WSW
20
WSW
15
NW
10
W
25
WNW
15
W
5
WSW
15
NNW
25
NNE
25
NE
25
NE
20
NE
10
ENE
10
WNW
5
N
5
SE
 mm 
3
2
2
5
1
1
1
max°C
6
8
10
11
11
11
11
11
12
10
11
10
10
11
11
12
12
11
13
13
14
11
11
12
13
13
13
12
14
14
12
13
11
11
13
13
11
13
12
8
7
7
7
8
9
11
14
Moonrise
5:53
6:58
8:02
9:07
10:08
11:06
11:56
12:38
1:13
1:43
2:08
2:31
2:52
3:14
3:38
Moonset
4:23
4:44
5:08
5:35
6:08
6:48
7:36
8:31
9:31
10:36
11:42
12:48
1:56
3:06
4:17
5:34
Sunrise
5:39
5:37
5:37
5:35
5:35
5:33
5:31
5:31
5:30
5:28
5:26
5:26
5:24
5:24
5:22
5:22
Sunset
7:35
7:36
7:37
7:37
7:39
7:40
7:42
7:43
7:44
7:45
7:45
7:46
7:47
7:49
7:50
7:51
Today's sea temperature in Wychmere Harbor, Nantucket Sound is
7.7° C
(Statistics for 29 Apr 1981-2005 – mean: 7.6 max: 9.3 min: 5.9°C)
Issued (local time): 1 am Wednesday 29 Apr 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest