Great Point, Nantucket Island Sea Conditions and Tide Table

Great Point, Nantucket Island 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 07:03 AM and sunset is at 04:15 PM.

Days 1–3 Weather Summary

Light rain (total 3mm), mostly falling on Tue night. Icy conditions (max 5°C on Tue night, min -4°C on Thu night). Winds increasing (light winds from the NNW on Wed night, near gales from the NNW by Thu night).

Days 4–6 Weather Summary

Moderate rain (total 15mm), heaviest on Sun night. Icy conditions (max 7°C on Sun night, min -3°C on Sat night). Winds increasing (light winds from the NE on Fri night, gales from the W by Mon afternoon).

Days 7–9 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 3°C on Wed afternoon, min -4°C on Tue night). Winds decreasing (gales from the W on Mon night, light winds from the NNW by Thu morning).

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 2°C on Sun night, min -12°C on Thu night). Winds decreasing (strong winds from the NW on Thu night, light winds from the WNW by Sat night).

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sun
4
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
2:35PM0.95m
3:13AM0.86m
3:20PM0.94m
3:57AM0.88m
4:09PM0.92m
4:45AM0.90m
5:03PM0.90m
5:36AM0.94m
6:01PM0.89m
6:29AM0.97m
7:00PM0.88m
7:25AM1.01m
8:03PM0.88m
8:23AM1.05m
9:03PM0.88m
9:19AM1.08m
10:03PM0.91m
10:15AM1.11m
11:00PM0.93m
11:10AM1.12m
11:55PM0.94m
12:05PM1.12m
Low Tide
8:11AM0.13m
8:44PM0.02m
8:57AM0.12m
9:28PM0.03m
9:48AM0.11m
10:16PM0.04m
10:43AM0.09m
11:06PM0.04m
11:40AM0.07m
11:59PM0.05m
12:39PM0.03m
00:54AM0.05m
1:39PM-0.01m
1:52AM0.04m
2:40PM-0.05m
2:48AM0.04m
3:38PM-0.08m
3:46AM0.01m
4:33PM-0.12m
4:41AM-0.01m
5:27PM-0.14m
5:35AM-0.02m
6:19PM-0.14m
Wave
height (m) 
direction
period (s) 
1.3
NW
4
1.8
ENE
8
1.3
ENE
9
1.4
ENE
10
1.2
ENE
10
1.5
NNW
5
1.4
NE
8
1.1
NE
9
0.8
NE
8
1.1
ENE
12
1.2
ENE
13
1
ENE
13
0.9
ENE
12
0.8
ENE
12
0.8
ENE
11
1.4
SSW
5
1.2
W
4
1.9
WSW
6
1.7
W
6
1.4
W
5
1.2
W
5
1
W
4
1.1
WSW
4
1.1
WSW
4
0.5
ENE
12
0.5
E
12
1.1
NW
4
1.2
NW
4
0.9
NW
4
0.8
NW
4
0.7
NW
4
0.5
E
12
0.4
E
11
0.4
E
10
0.5
E
10
cloud
light rain
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
part cloud
heavy rain
light rain
cloud
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
cloud
light snow
part cloud
cloud
part cloud
part cloud
cloud
part cloud
clear
clear
part cloud
cloudy
light rain
cloudy
cloudy
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
some clouds
clear
some clouds
heavy rain
light rain
cloudy
some clouds
some clouds
clear
clear
some clouds
cloudy
some clouds
cloudy
light snow
some clouds
cloudy
some clouds
some clouds
cloudy
some clouds
clear
clear
some clouds
 km/h
55
NNW
40
NNE
5
NNW
45
WSW
35
WNW
50
NW
40
N
30
NNE
15
NNE
35
NNE
35
NNE
20
NNW
20
WNW
20
W
30
SSW
50
WSW
50
W
65
W
60
W
55
WNW
45
WNW
40
W
45
WSW
40
W
20
NW
25
NNW
45
NW
45
NW
30
NW
30
NW
25
NW
20
NNW
5
WNW
20
SSW
25
SW
 mm 
1
11
4
max°C
4
3
3
5
5
-2
-4
-3
0
1
0
-1
-1
2
7
7
2
-1
-2
-1
-3
0
3
3
0
-3
-4
-12
-11
-11
-10
-8
-4
-1
1
Moonrise
10:10
10:33
10:54
11:16
11:38
12:05
12:37
1:19
2:13
3:19
4:36
5:55
Moonset
8:51
9:58
11:07
12:17
1:31
2:48
4:08
5:27
6:39
7:37
8:23
Sunrise
7:03
7:03
7:03
7:05
7:05
7:05
7:05
7:05
7:05
7:05
7:05
7:05
Sunset
4:15
4:15
4:15
4:16
4:17
4:17
4:19
4:20
4:21
4:22
4:22
4:23
Today's sea temperature in Great Point, Nantucket Island is
5.4° C
(Statistics for 24 Dec 1981-2005 – mean: 8.0 max: 9.8 min: 6.7°C)
Issued (local time): 12 am Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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