Block Island (Great Salt Pond) Sea Conditions and Tide Table

Block Island (Great Salt Pond) 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 07:05 AM and sunset is at 04:19 PM.

Days 1–3 Weather Summary

Moderate rain (total 18mm), heaviest on Fri morning. Icy conditions (max 13°C on Thu night, min -1°C on Fri night). Winds increasing (light winds from the SSE on Thu morning, severe gales from the S by Fri morning).

Days 4–6 Weather Summary

Light rain (total 6mm), mostly falling on Tue morning. Icy conditions (max 6°C on Sun morning, min -5°C on Sun night). Winds increasing (light winds from the WNW on Mon night, near gales from the SW by Tue morning).

Days 7–9 Weather Summary

Moderate rain (total 17mm), heaviest on Fri morning. Freeze-thaw conditions (max 9°C on Fri morning, min -4°C on Wed night). Winds increasing (calm on Wed night, strong winds from the NW by Fri night).

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 5°C on Mon afternoon, min -4°C on Sat night). Winds decreasing (strong winds from the NNW on Sat morning, light winds from the NNW by Mon morning).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
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
High Tide
6:39PM0.69m
7:01AM0.87m
7:22PM0.70m
7:41AM0.87m
8:03PM0.70m
8:22AM0.87m
8:45PM0.70m
9:02AM0.85m
9:27PM0.69m
9:44AM0.82m
10:09PM0.69m
10:27AM0.78m
10:55PM0.69m
11:13AM0.74m
11:45PM0.71m
12:04PM0.71m
00:39AM0.73m
1:01PM0.69m
1:38AM0.77m
2:01PM0.68m
2:38AM0.83m
3:02PM0.68m
3:37AM0.89m
Low Tide
12:38PM0.05m
00:12AM0.02m
1:09PM0.03m
00:49AM0.01m
1:41PM0.02m
1:26AM0.00m
2:14PM0.01m
2:05AM0.00m
2:48PM0.01m
2:45AM0.01m
3:25PM0.01m
3:28AM0.02m
4:04PM0.01m
4:15AM0.03m
4:47PM0.01m
5:08AM0.04m
5:35PM0.01m
6:07AM0.05m
6:29PM0.00m
7:14AM0.06m
7:28PM-0.01m
8:26AM0.04m
8:31PM-0.03m
Wave
height (m) 
direction
period (s) 
0.6
S
8
0.8
S
5
1.4
SSE
6
3.5
SSE
8
3
SSE
11
2.5
S
11
1.4
S
10
0.9
SSE
10
1.4
SSW
5
1.6
S
8
1.5
S
8
1.2
W
4
1
WNW
4
0.7
NW
4
0.3
SE
10
1.3
SSW
4
1.7
SW
6
1.2
SW
5
0.8
WNW
4
0.6
NW
3
0.4
NNE
3
0.1
SE
10
0.4
WSW
3
0.4
S
4
0.3
ESE
11
0.6
S
4
0.9
S
6
1.1
NNW
4
0.9
E
5
0.5
S
8
0.3
S
8
0.3
S
8
0.4
SW
4
0.2
S
7
0.1
SE
13
0.3
W
2
clear
clear
light rain
heavy rain
rain showers
clear
clear
cloud
part cloud
clear
clear
clear
clear
clear
cloud
light rain
rain showers
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
heavy rain
mod rain
part cloud
part cloud
clear
clear
clear
cloud
part cloud
clear
clear
part cloud
clear
clear
light rain
heavy rain
rain shwrs
clear
clear
cloudy
some clouds
clear
clear
clear
clear
clear
cloudy
light rain
rain shwrs
some clouds
some clouds
clear
some clouds
some clouds
some clouds
cloudy
heavy rain
mod rain
some clouds
some clouds
clear
clear
clear
cloudy
some clouds
clear
clear
some clouds
 km/h
15
SSE
25
SSE
35
SSE
75
S
50
WSW
60
W
35
WNW
25
WSW
45
SSW
45
WSW
45
W
45
WNW
40
NW
30
NW
20
W
50
SW
50
WSW
40
WNW
35
NW
35
NNW
15
NNE
15
SW
25
WSW
20
W
20
SSE
25
SW
30
W
40
NNW
35
N
15
N
10
NNW
15
W
25
W
10
NNW
15
NW
25
WNW
 mm 
2
11
5
4
2
11
6
max°C
6
10
13
13
9
1
2
2
8
6
5
-1
-2
-2
1
4
4
4
2
2
-3
1
3
4
9
8
7
1
1
-3
-1
0
1
4
5
2
Moonrise
6:08
7:06
7:58
8:42
9:19
9:50
10:16
10:39
11:00
11:22
11:45
12:12
Moonset
2:52
3:40
4:35
5:37
6:43
7:50
8:58
10:05
11:13
12:23
1:37
Sunrise
7:05
7:07
7:07
7:07
7:07
7:09
7:09
7:09
7:09
7:09
7:09
7:11
Sunset
4:19
4:19
4:20
4:20
4:21
4:21
4:22
4:22
4:22
4:23
4:23
4:24
Today's sea temperature in Block Island (Great Salt Pond) is
8.2° C
(Statistics for 18 Dec 1981-2005 – mean: 8.8 max: 11.8 min: 7.1°C)
Issued (local time): 6 am Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest