Siasconset, Nantucket Island Sea Conditions and Tide Table

Siasconset, 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 08:08 PM.

Days 1–4 Weather Summary

Light rain (total 4mm), mostly falling on Sat night. Warm air temperatures (max 23°C on Fri night, min 12°C on Mon morning). Mainly strong winds.

Days 5–7 Weather Summary

Mostly dry. Warm air temperatures (max 21°C on Wed afternoon, min 13°C on Mon night). Winds increasing (calm on Tue afternoon, fresh winds from the WSW by Thu afternoon).

Days 8–10 Weather Summary

Mostly dry. Warm (max 20°C on Fri afternoon, min 17°C on Fri night). Winds increasing (moderate winds from the WSW on Fri morning, strong winds from the SSW by Sun afternoon).

Days 11–13 Weather Summary

Moderate rain (total 15mm), heaviest on Mon morning. Very mild (max 19°C on Sun night, min 14°C on Wed afternoon). Winds decreasing (strong winds from the SSW on Sun night, light winds from the E by Wed afternoon).

Days 14–17 Weather Summary

Mostly dry. Warm (max 22°C on Fri night, min 15°C on Wed night). Wind will be generally light.

Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sun
21
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
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High Tide
4:05AM0.38m
4:46PM0.35m
4:53AM0.37m
5:32PM0.35m
5:43AM0.37m
6:19PM0.37m
6:37AM0.37m
7:09PM0.38m
7:33AM0.37m
7:59PM0.40m
8:31AM0.37m
8:51PM0.42m
9:28AM0.37m
9:44PM0.45m
10:25AM0.38m
10:38PM0.46m
11:21AM0.39m
11:32PM0.48m
12:17PM0.40m
00:26AM0.48m
1:12PM0.40m
1:22AM0.48m
2:07PM0.40m
2:18AM0.47m
3:03PM0.40m
3:14AM0.45m
3:59PM0.40m
Low Tide
10:00PM0.07m
10:33AM0.03m
10:48PM0.07m
11:18AM0.03m
11:39PM0.07m
12:06PM0.04m
00:34AM0.05m
12:56PM0.03m
1:30AM0.04m
1:48PM0.03m
2:27AM0.02m
2:41PM0.03m
3:23AM-0.00m
3:35PM0.02m
4:19AM-0.03m
4:29PM0.01m
5:14AM-0.05m
5:24PM0.00m
6:08AM-0.06m
6:17PM-0.00m
7:02AM-0.06m
7:12PM-0.01m
7:56AM-0.06m
8:07PM-0.00m
8:49AM-0.05m
9:03PM0.01m
9:42AM-0.04m
Wave
Height (m)
Direction
Period (s)
0.9
SE
8
0.8
SE
8
1.2
SSW
4
1.7
SSW
6
1.3
SSW
6
1.2
S
7
1.6
N
5
1.7
NE
7
1.2
NE
7
0.8
ENE
7
0.7
ENE
7
0.6
ENE
6
0.7
SW
4
0.5
SSE
5
0.7
SSE
6
0.8
SW
4
0.9
SW
4
0.9
SW
4
0.7
SW
4
0.6
SW
4
0.7
SSW
7
0.9
SSW
5
1
SSW
5
1.2
SSW
5
1.4
SSW
6
1.5
SSW
6
1.8
SSW
6
1.5
SSW
7
1.3
S
7
1.2
S
7
1.2
S
8
1.2
S
8
1
S
8
0.9
SSE
8
0.9
SSE
7
0.8
SSE
7
0.7
SSE
7
0.7
S
7
0.8
S
7
0.8
S
7
0.7
S
7
0.7
S
6
0.6
S
6
0.6
S
6
0.6
S
6
0.5
S
6
0.5
S
6
clear
part cloud
cloud
rain showers
cloud
clear
rain showers
cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
clear
part cloud
clear
rain showers
mod rain
light rain
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
clear
clear
part cloud
clear
clear
clear
clear
some clouds
cloudy
rain shwrs
cloudy
clear
rain shwrs
cloudy
clear
clear
clear
clear
clear
clear
clear
some clouds
cloudy
some clouds
clear
clear
clear
some clouds
cloudy
some clouds
clear
some clouds
clear
rain shwrs
mod rain
light rain
clear
clear
clear
clear
clear
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
clear
clear
some clouds
clear
clear
clear
km/h
20
SW
25
SW
35
SSW
45
W
30
WSW
20
WSW
45
N
45
N
25
NNE
20
WNW
10
NNW
15
SW
25
WSW
15
WSW
20
SW
25
WSW
30
WSW
30
WSW
25
WSW
25
SW
20
SW
30
SW
30
SW
35
SW
40
SW
35
SW
45
SSW
35
SSW
20
W
30
NNE
30
NNE
25
NE
20
ENE
20
E
20
ESE
20
E
15
E
5
NNW
15
WSW
20
WSW
15
NW
15
E
0
W
10
S
15
S
15
SSE
20
SSW
3
1
2
10
3
max °C
23
18
18
18
16
20
20
12
13
14
17
20
20
19
21
19
20
19
19
19
20
20
18
18
19
18
19
19
17
15
16
17
16
16
15
14
16
16
18
18
19
21
22
21
21
21
19
Moonrise
12:09
12:32
12:54
1:15
1:37
2:03
2:33
3:12
4:02
5:06
6:21
7:41
9:00
10:15
11:25
12:32
Moonset
10:38
11:43
12:49
1:58
3:09
4:25
5:45
7:06
8:22
9:26
10:16
10:55
11:25
11:51
12:13
Sunrise
5:07
5:07
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
Sunset
8:08
8:08
8:09
8:09
8:10
8:12
8:12
8:13
8:13
8:14
8:14
8:14
8:15
8:15
8:15
8:15
Today's sea temperature in Siasconset, Nantucket Island is
12.4° C
(Statistics for 05 Jun 1981-2005 – mean: 13.6 max: 15.4 min: 11.5°C)
Issued (local time): 7 pm Friday 05 Jun 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest