Block Island (Old Harbor) Sea Conditions and Tide Table

Block Island (Old Harbor) 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 08:21 PM.

Days 1–4 Weather Summary

Light rain (total 6mm), mostly falling on Fri morning. Warm air temperatures (max 23°C on Wed afternoon, min 20°C on Thu night). Winds decreasing (fresh winds from the SW on Thu afternoon, calm by Fri morning).

Days 5–7 Weather Summary

Light rain (total 8mm), mostly falling on Fri afternoon. Warm air temperatures (max 21°C on Fri afternoon, min 17°C on Sat morning). Winds increasing (light winds from the ENE on Fri afternoon, strong winds from the SW by Sun night).

Days 8–10 Weather Summary

Light rain (total 4mm), mostly falling on Mon afternoon. Warm (max 23°C on Tue afternoon, min 18°C on Tue night). Wind will be generally light.

Days 11–13 Weather Summary

Light rain (total 8mm), mostly falling on Thu night. Warm (max 24°C on Sun morning, min 18°C on Fri morning). Wind will be generally light.

Tue
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sun
30
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
5:53PM0.95m
6:11AM0.72m
6:37PM1.00m
6:55AM0.77m
7:20PM1.05m
7:39AM0.81m
8:03PM1.09m
8:24AM0.85m
8:48PM1.10m
9:11AM0.88m
Low Tide
00:35AM0.12m
11:42AM0.11m
1:21AM0.09m
12:29PM0.07m
2:05AM0.05m
1:16PM0.04m
2:47AM0.03m
2:03PM0.02m
3:27AM0.01m
2:50PM0.01m
Wave
height (m) 
direction
period (s) 
0.6
SSW
4
0.5
S
6
0.5
SE
10
0.6
SSW
4
0.6
S
5
0.6
SE
8
0.8
SSW
4
0.6
SSE
8
0.5
SE
8
0.5
SE
8
0.5
SE
8
0.5
SE
7
0.4
SE
7
0.5
SE
7
1
S
4
1.1
S
6
1.5
S
7
1.2
S
8
1.1
S
8
1.1
S
8
0.9
S
8
0.8
S
7
0.7
SSE
7
0.6
SSE
7
0.6
SSE
7
0.6
SSE
7
0.6
SSE
7
0.7
SSE
7
0.5
SSE
7
0.7
SSE
8
0.7
SSE
8
0.6
SSE
7
0.5
S
7
0.4
SSE
7
0.4
SSE
7
0.4
SSE
7
clear
clear
part cloud
part cloud
clear
clear
clear
rain showers
rain showers
rain showers
part cloud
part cloud
part cloud
rain showers
cloud
cloud
light rain
light rain
rain showers
rain showers
clear
clear
clear
clear
clear
part cloud
rain showers
part cloud
thunderstorm
rain showers
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
some clouds
some clouds
clear
clear
clear
rain shwrs
rain shwrs
rain shwrs
some clouds
some clouds
some clouds
rain shwrs
cloudy
cloudy
light rain
light rain
rain shwrs
rain shwrs
clear
clear
clear
clear
clear
some clouds
rain shwrs
some clouds
risk tstorm
rain shwrs
clear
some clouds
some clouds
clear
clear
some clouds
 km/h
25
SW
20
SW
25
SW
30
SW
25
SW
25
SW
30
SW
20
SW
5
NE
15
E
15
E
15
SE
15
S
25
SSW
35
SSW
35
SSW
40
SW
25
SW
25
SW
20
WSW
15
SE
10
SSE
15
E
10
SE
15
SSW
20
SSW
15
SW
25
SSW
20
NE
25
ENE
20
E
10
ENE
10
ESE
10
S
15
SW
20
SSW
 mm 
1.0
5
3
1.0
3
1.0
1.0
2.0
1.0
4
4
max°C
22
22
22
23
22
22
23
22
21
21
20
17
19
21
20
21
21
21
21
21
21
23
21
18
20
22
22
23
22
20
21
20
18
19
22
24
Moonrise
5:19
6:28
7:36
8:40
9:36
10:23
11:00
11:30
11:56
12:19
12:42
1:06
Moonset
2:27
2:56
3:32
4:17
5:14
6:22
7:37
8:54
10:10
11:25
12:38
1:51
3:06
Sunrise
5:13
5:13
5:13
5:13
5:13
5:13
5:13
5:15
5:15
5:16
5:16
5:16
Sunset
8:21
8:22
8:22
8:22
8:22
8:22
8:22
8:22
8:22
8:22
8:22
8:22
Today's sea temperature in Block Island (Old Harbor) is 16.2 °C (Statistics for 18 Jun 1981-2005 – mean: 17.2 max: 18.7 min: 15.4°C)
Nearest