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

Mostly dry. Icy conditions (max 5°C on Thu morning, min -4°C on Thu night). Winds increasing (light winds from the NW on Wed night, near gales from the NNW by Thu afternoon).

Days 4–6 Weather Summary

Moderate rain (total 16mm), heaviest on Sun night. Icy conditions (max 8°C on Mon morning, min -3°C on Sat night). Winds increasing (light winds from the WNW on Sun afternoon, near gales from the W by Tue morning).

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 7°C on Thu afternoon, min -4°C on Fri afternoon). Winds decreasing (strong winds from the W on Tue night, moderate winds from the W by Wed afternoon).

Days 10–12 Weather Summary

Light rain (total 6mm), mostly falling on Sun night. Freeze-thaw conditions (max 8°C on Sun night, min -7°C on Fri night). Winds decreasing (fresh winds from the NW on Sat morning, light winds from the WSW by Sun morning).

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Mon
5
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
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
00:49AM0.95m
1:00PM1.10m
Low Tide
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
6:29AM-0.02m
Wave
height (m) 
direction
period (s) 
1.3
ENE
9
1.1
E
10
1.7
NNE
8
1.3
NE
8
1
NE
8
0.7
ENE
10
0.8
ENE
12
0.9
ENE
12
0.7
ENE
12
0.6
ENE
12
0.5
ENE
12
0.6
WSW
3
0.9
S
4
1.1
SW
4
1.5
W
5
1.5
W
5
1.5
W
5
1.3
W
5
1.1
W
4
0.7
W
4
0.9
WSW
4
1
SW
4
1
SW
4
0.8
SW
4
1.1
W
4
1
NW
4
0.7
NW
4
0.7
WNW
3
0.8
WNW
4
0.6
WNW
3
0.3
E
9
0.3
E
9
0.7
SSW
4
0.8
SW
4
0.9
SSE
8
cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
clear
clear
part cloud
mod rain
mod rain
light rain
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
cloud
clear
clear
clear
part cloud
clear
part cloud
cloud
light rain
rain showers
part cloud
cloudy
some clouds
cloudy
cloudy
some clouds
cloudy
cloudy
some clouds
clear
clear
some clouds
mod rain
mod rain
light rain
some clouds
some clouds
cloudy
some clouds
clear
some clouds
some clouds
cloudy
cloudy
some clouds
cloudy
clear
clear
clear
some clouds
clear
some clouds
cloudy
light rain
rain shwrs
some clouds
 km/h
40
WSW
35
NW
50
NNW
40
N
25
N
10
NNE
25
NNE
30
N
25
NW
20
NW
20
WNW
30
WSW
35
SW
40
SW
55
W
55
W
55
W
45
W
40
W
25
W
40
WSW
40
SW
35
SW
30
SW
45
WNW
35
NW
25
NW
35
NW
35
NW
25
NW
10
WSW
20
SW
30
SSW
30
WSW
25
WSW
 mm 
8
6
2
5
1
max°C
5
5
-2
-4
-3
-2
0
-2
-2
0
3
6
8
8
4
-1
0
-1
-1
1
5
6
7
7
-1
-3
-6
-5
-3
-5
-2
2
8
6
5
Moonrise
10:33
10:54
11:16
11:38
12:05
12:37
1:19
2:13
3:19
4:36
5:55
7:12
Moonset
9:58
11:07
12:17
1:31
2:48
4:08
5:27
6:39
7:37
8:23
8:58
Sunrise
7:03
7:03
7:05
7:05
7:05
7:05
7:05
7:05
7:05
7:05
7:05
7:05
Sunset
4:15
4:15
4:16
4:17
4:17
4:19
4:20
4:21
4:22
4:22
4:23
4:24
Today's sea temperature in Great Point, Nantucket Island is
4.7° C
(Statistics for 25 Dec 1981-2005 – mean: 7.9 max: 9.8 min: 5.8°C)
Issued (local time): 12 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest