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 — and sunset is at 04:14 PM.

Days 1–4 Weather Summary

Moderate rain (total 13mm), heaviest on Tue night. Icy conditions (max 5°C on Tue night, min 0°C on Mon afternoon). Winds increasing (light winds from the W on Mon night, near gales from the NW by Wed morning).

Days 5–7 Weather Summary

A dusting of snow turning to light rain (total 7mm) on Sun morning. Icy conditions (max 8°C on Sun morning, min -5°C on Fri morning). Winds decreasing (near gales from the NW on Thu night, light winds from the E by Sat night).

Days 8–10 Weather Summary

Mostly dry. Freeze-thaw conditions (max 5°C on Sun afternoon, min -6°C on Mon night). Winds decreasing (gales from the W on Mon morning, fresh winds from the WSW by Wed morning).

Days 11–13 Weather Summary

Some drizzle, heaviest during Thu night. Freeze-thaw conditions (max 4°C on Thu night, min -10°C on Sat morning). Winds increasing (moderate winds from the WNW on Wed night, near gales from the WNW by Thu night).

Mon
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Sat
3
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
1:13PM0.96m
1:53AM0.84m
1:53PM0.96m
2:33AM0.84m
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
Low Tide
7:23PM0.02m
7:29AM0.13m
8:03PM0.02m
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
Wave
height (m) 
direction
period (s) 
0.8
NW
4
0.6
W
3
0.3
E
10
0.4
E
10
0.6
SSE
4
1.3
WNW
5
1.6
NNE
5
1.3
ENE
9
1.2
ENE
10
1.3
ENE
10
1.5
ENE
11
1.2
NE
8
0.9
NE
8
0.6
ENE
10
0.8
NE
4
0.6
NE
5
0.4
ENE
10
1.4
SSE
5
1.1
SE
6
1.4
W
5
1.7
W
6
1.2
W
5
1
WNW
4
1
WNW
4
0.9
WNW
4
1
WNW
4
0.8
W
4
0.9
WSW
4
0.8
WSW
4
0.5
E
11
0.5
WSW
3
1.3
WSW
5
1.6
W
5
1.5
W
5
1.5
W
5
1.2
W
5
clear
cloud
light rain
light rain
mod rain
part cloud
light rain
part cloud
cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
light snow
mod rain
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
clear
part cloud
rain showers
clear
clear
clear
clear
clear
cloudy
light rain
light rain
mod rain
some clouds
light rain
some clouds
cloudy
some clouds
some clouds
cloudy
some clouds
cloudy
cloudy
cloudy
light snow
mod rain
some clouds
some clouds
some clouds
cloudy
some clouds
clear
clear
clear
some clouds
cloudy
some clouds
clear
some clouds
rain shwrs
clear
clear
clear
clear
 km/h
30
NW
30
WNW
15
W
20
S
30
W
50
NW
50
NNE
15
NNW
30
WSW
40
W
50
NW
35
NNW
25
NNE
15
NNE
25
NE
20
NE
10
SE
50
SSE
40
WNW
50
WNW
60
W
50
WNW
40
NW
40
WNW
40
WNW
40
WNW
35
WNW
40
WSW
30
W
25
W
25
WSW
50
W
60
WNW
55
WNW
60
WNW
45
WNW
 mm 
1
4
6
2
7
1
max°C
1
2
4
4
5
4
3
2
4
4
1
-5
-4
-1
-1
-2
1
8
5
4
-1
-1
-4
-2
-1
-3
1
3
1
2
3
4
-5
-6
-7
-8
Moonrise
9:44
10:10
10:33
10:54
11:16
11:38
12:05
12:37
1:19
2:13
3:19
Moonset
6:36
7:43
8:51
9:58
11:07
12:17
1:31
2:48
4:08
5:27
6:39
7:37
Sunrise
7:03
7:03
7:03
7:03
7:05
7:05
7:05
7:05
7:05
7:05
7:05
7:05
Sunset
4:14
4:14
4:15
4:15
4:15
4:16
4:17
4:17
4:19
4:20
4:21
4:22
Today's sea temperature in Great Point, Nantucket Island is
5.7° C
(Statistics for 22 Dec 1981-2005 – mean: 8.2 max: 10.0 min: 6.7°C)
Issued (local time): 6 pm Monday 22 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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