Nantucket Sea Conditions and Tide Table

Nantucket 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 06:57 PM.

Days 1–4 Weather Summary

Light rain (total 5mm), mostly falling on Thu night. Icy conditions (max 10°C on Wed night, min -1°C on Sat afternoon). Winds decreasing (gales from the SW on Thu night, light winds from the NE by Sat afternoon).

Days 5–7 Weather Summary

Light rain (total 9mm), mostly falling on Tue afternoon. Icy conditions (max 10°C on Mon night, min -2°C on Sat night). Winds decreasing (near gales from the SW on Mon night, calm by Tue morning).

Days 8–10 Weather Summary

Mild with light rain (total 8mm) on Tue night. Becoming colder with a light covering of snow, mostly falling on Tue night. Very mild (max 12°C on Thu night, min 2°C on Tue night). Winds decreasing (strong winds from the ENE on Tue night, light winds from the SE by Wed night).

Days 11–13 Weather Summary

Light rain (total 6mm) at first, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 13°C on Sat morning, min 0°C on Sun night). Winds increasing (light winds from the E on Fri night, strong winds from the SSW by Sat afternoon).

Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Fri
10
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
AM
Wave Height Map
High Tide
6:44PM0.79m
6:58AM1.11m
7:50PM0.79m
8:04AM1.09m
8:54PM0.81m
9:08AM1.07m
9:54PM0.84m
10:10AM1.05m
10:49PM0.89m
11:08AM1.01m
11:39PM0.93m
12:03PM0.98m
00:25AM0.97m
12:53PM0.94m
1:05AM0.99m
1:39PM0.91m
1:43AM1.01m
2:20PM0.87m
2:19AM1.01m
3:00PM0.83m
2:55AM1.01m
3:39PM0.80m
3:34AM1.00m
4:21PM0.77m
4:15AM0.98m
5:05PM0.74m
5:01AM0.96m
5:54PM0.72m
Low Tide
00:03AM0.06m
1:05PM-0.06m
1:07AM0.08m
2:08PM-0.03m
2:13AM0.08m
3:11PM-0.01m
3:20AM0.07m
4:08PM-0.00m
4:22AM0.03m
4:58PM0.01m
5:18AM-0.00m
5:41PM0.02m
6:08AM-0.03m
6:22PM0.05m
6:54AM-0.05m
7:01PM0.07m
7:38AM-0.05m
7:41PM0.10m
8:21AM-0.04m
8:21PM0.13m
9:05AM-0.02m
9:03PM0.16m
9:50AM0.00m
9:47PM0.18m
10:36AM0.03m
10:33PM0.21m
11:24AM0.06m
Wave
height (m) 
direction
period (s) 
0.9
SSW
4
1.8
SSW
6
1.9
SSW
7
3
SSW
8
1.7
SSW
9
1.6
SSW
8
1
S
8
0.9
S
7
0.8
S
7
0.8
ESE
6
0.6
NE
6
0.8
WSW
4
1.1
SW
4
1.7
SSW
6
2.3
SSW
7
2.2
SSW
9
1.4
SSW
8
1.3
SSW
8
1.8
E
6
1.7
ESE
7
1.5
SE
7
1.3
ESE
7
1.9
S
7
2.2
SSW
8
1.6
SSW
8
1.5
SSW
7
1.3
S
7
1
S
6
1.5
S
6
1.9
SSW
7
1.3
S
7
1.3
S
7
1.3
SSE
8
1.7
NNE
6
1.6
NE
7
1.2
NE
6
0.9
SSE
10
0.8
SE
9
0.7
SE
9
0.8
SE
8
0.8
SE
8
0.8
SE
8
0.8
SE
8
1.1
SE
8
1.3
S
5
1.8
S
6
1.6
S
8
cloud
cloud
part cloud
rain showers
light rain
part cloud
part cloud
cloud
cloud
clear
clear
clear
part cloud
cloud
cloud
light rain
cloud
light rain
light snow
cloud
cloud
part cloud
clear
clear
part cloud
cloud
cloud
part cloud
part cloud
part cloud
light snow
cloud
cloud
part cloud
clear
clear
cloud
cloud
cloud
cloud
cloud
clear
part cloud
cloud
cloud
mod rain
part cloud
cloudy
cloudy
some clouds
rain shwrs
light rain
some clouds
some clouds
cloudy
cloudy
clear
clear
clear
some clouds
cloudy
cloudy
light rain
cloudy
light rain
light snow
cloudy
cloudy
some clouds
clear
clear
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
light snow
cloudy
cloudy
some clouds
clear
clear
cloudy
cloudy
cloudy
cloudy
cloudy
clear
some clouds
cloudy
cloudy
mod rain
some clouds
 km/h
30
S
50
SSW
45
SW
65
SW
25
NNE
35
NE
20
NE
20
NNE
15
NE
30
NW
20
W
30
SW
35
SSW
50
SSW
60
SW
40
WSW
5
NW
45
ENE
45
ENE
35
E
30
E
25
SW
45
SW
45
SW
20
W
40
ENE
20
ENE
15
S
35
SSW
45
SSW
35
NW
30
NNW
35
N
45
NNE
45
NNE
30
NE
20
ESE
15
SSW
10
SW
10
SSW
10
SW
10
SSW
20
SSE
30
S
35
S
45
SW
30
WSW
 mm 
4
1
4
5
8
6
6
max°C
10
10
9
10
9
4
2
0
-1
1
0
2
6
8
9
10
10
6
3
2
3
10
10
9
12
3
3
12
13
13
9
2
5
5
0
0
1
1
3
8
8
10
13
15
14
12
9
Moonrise
11:58
1:12
2:26
3:38
4:46
5:53
6:58
8:03
9:08
10:13
11:16
12:17
1:12
2:00
2:40
Moonset
3:06
3:50
4:25
4:53
5:17
5:38
5:58
6:19
6:41
7:06
7:35
8:10
8:53
9:43
10:41
11:44
Sunrise
6:33
6:31
6:31
6:28
6:26
6:26
6:24
6:22
6:20
6:18
6:16
6:16
6:13
6:11
6:11
6:09
Sunset
6:57
6:58
6:59
7:00
7:00
7:01
7:02
7:04
7:06
7:07
7:07
7:08
7:09
7:10
7:12
7:13
Today's sea temperature in Nantucket is
5.2° C
(Statistics for 25 Mar 1981-2005 – mean: 5.4 max: 7.2 min: 4.1°C)
Issued (local time): 7 pm Wednesday 25 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest