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 07:30 PM.

Days 1–4 Weather Summary

Moderate rain (total 13mm), heaviest on Sat night. Warm air temperatures (max 25°C on Sun night, min 20°C on Fri afternoon). Winds decreasing (fresh winds from the ENE on Fri afternoon, calm by Sat night).

Days 5–7 Weather Summary

Light rain (total 3mm), mostly falling on Mon night. Warm air temperatures (max 24°C on Mon afternoon, min 20°C on Tue night). Winds decreasing (strong winds from the WSW on Tue afternoon, light winds from the WSW by Wed night).

Days 8–10 Weather Summary

Moderate rain (total 12mm), heaviest on Fri morning. Warm (max 23°C on Thu afternoon, min 19°C on Fri afternoon). Wind will be generally light.

Days 11–13 Weather Summary

Heavy rain (total 58mm), heaviest during Tue night. Warm (max 25°C on Mon morning, min 18°C on Tue morning). Winds increasing (light winds from the NNW on Mon night, fresh winds from the ESE by Tue night).

Days 14–17 Weather Summary

Light rain (total 2mm), mostly falling on Fri night. Warm (max 22°C on Wed night, min 17°C on Fri morning). Winds decreasing (fresh winds from the WNW on Wed night, light winds from the S by Fri night).

Fri
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
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
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
High Tide
7:35PM0.89m
8:22AM0.77m
8:32PM0.89m
9:21AM0.77m
9:29PM0.90m
10:15AM0.79m
10:21PM0.93m
11:01AM0.83m
11:06PM0.95m
11:41AM0.86m
11:48PM0.98m
12:19PM0.90m
00:27AM0.99m
12:55PM0.93m
1:07AM1.00m
1:32PM0.97m
1:47AM1.00m
2:10PM0.99m
2:28AM1.00m
2:48PM1.02m
3:12AM0.98m
3:29PM1.03m
3:57AM0.95m
4:14PM1.04m
4:48AM0.91m
5:05PM1.03m
5:46AM0.87m
6:03PM1.01m
Low Tide
1:02PM0.22m
1:51AM0.16m
1:57PM0.23m
2:50AM0.16m
2:52PM0.23m
3:45AM0.14m
3:47PM0.21m
4:32AM0.11m
4:35PM0.17m
5:13AM0.08m
5:19PM0.13m
5:51AM0.05m
6:01PM0.10m
6:28AM0.03m
6:41PM0.06m
7:06AM0.01m
7:22PM0.03m
7:44AM0.01m
8:04PM0.01m
8:23AM0.01m
8:48PM-0.00m
9:04AM0.02m
9:34PM0.00m
9:49AM0.05m
10:26PM0.01m
10:39AM0.08m
11:22PM0.03m
11:35AM0.11m
Wave
Height (m)
Direction
Period (s)
0.9
ENE
4
1.1
E
5
0.8
E
5
0.7
E
5
0.5
E
13
0.7
SE
4
0.6
E
12
0.8
SE
7
0.9
SW
4
0.8
SW
4
0.6
E
11
0.9
WSW
4
1.1
SW
4
0.8
W
4
0.5
E
10
0.7
SW
3
0.6
WSW
4
0.5
ESE
7
0.6
ESE
9
0.5
ESE
8
0.4
ESE
10
0.5
ESE
9
0.6
SE
8
0.6
SE
8
0.5
SE
8
0.5
SE
8
0.4
SE
7
0.7
SSW
3
0.8
SSW
4
0.7
SW
4
0.7
SW
4
0.4
SSE
6
0.7
ENE
4
0.9
ESE
4
0.8
ESE
5
0.7
ESE
12
0.6
ESE
12
0.6
ESE
11
0.9
ESE
10
0.7
ESE
10
0.7
NE
6
0.7
NE
6
0.6
NE
6
0.6
ESE
8
0.5
ESE
8
0.5
E
8
0.4
E
8
light rain
light rain
cloud
light rain
light rain
rain showers
part cloud
thunderstorm
clear
clear
thunderstorm
clear
rain showers
thunderstorm
clear
clear
clear
part cloud
clear
part cloud
mod rain
rain showers
clear
clear
clear
clear
clear
clear
part cloud
light rain
thunderstorm
rain showers
part cloud
mod rain
heavy rain
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
rain showers
rain showers
clear
part cloud
light rain
light rain
cloudy
light rain
light rain
rain shwrs
some clouds
risk tstorm
clear
clear
risk tstorm
clear
rain shwrs
risk tstorm
clear
clear
clear
some clouds
clear
some clouds
mod rain
rain shwrs
clear
clear
clear
clear
clear
clear
some clouds
light rain
risk tstorm
rain shwrs
some clouds
mod rain
heavy rain
some clouds
cloudy
some clouds
clear
clear
clear
clear
clear
rain shwrs
rain shwrs
clear
some clouds
km/h
35
ENE
35
ENE
10
NE
20
W
10
E
25
SSE
25
SSW
20
SW
25
SW
20
SW
25
SW
35
WSW
40
WSW
30
W
20
WSW
30
SW
20
W
20
SW
25
S
20
S
15
N
15
NE
10
WNW
10
ESE
15
ESE
10
SSE
15
S
25
SSW
30
SW
25
SW
15
W
10
NE
25
E
35
SE
10
NE
20
NE
10
ESE
20
WSW
30
NNW
20
NNE
20
NNE
20
N
15
NE
20
WSW
20
NE
15
ENE
20
SSW
 mm
1
2
1
5
3
1
1
1
1
7
5
4
5
1
10
38
1
1
max °C
20
20
21
21
21
22
24
25
24
24
23
21
22
22
20
22
22
23
23
23
22
19
22
21
20
20
20
22
23
25
24
23
19
19
20
19
19
22
19
21
20
18
19
20
19
18
19
Moonrise
3:34
4:26
5:11
5:48
6:20
6:46
7:09
7:31
7:52
8:14
8:38
9:06
9:41
10:26
11:21
Moonset
12:07
1:01
2:00
3:04
4:10
5:16
6:23
7:30
8:38
9:47
11:00
12:15
1:30
2:41
3:44
Sunrise
5:54
5:56
5:56
5:58
5:58
6:00
6:01
6:01
6:03
6:03
6:05
6:05
6:07
6:07
6:09
Sunset
7:30
7:29
7:28
7:25
7:24
7:22
7:22
7:20
7:17
7:16
7:15
7:13
7:12
7:09
7:07
7:07
Today's sea temperature in Great Point, Nantucket Island is
20.5° C
(Statistics for 21 Aug 1981-2005 – mean: 20.8 max: 22.1 min: 19.6°C)
Issued (local time): 1 pm Friday 21 Aug 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest