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 07:39 PM.

Days 1–4 Weather Summary

Moderate rain (total 14mm), heaviest on Sun night. Cool air temperatures (max 18°C on Mon morning, min 7°C on Wed afternoon). Wind will be generally light.

Days 5–7 Weather Summary

Some drizzle, heaviest during Sat afternoon. Cool air temperatures (max 18°C on Fri afternoon, min 6°C on Wed night). Winds increasing (calm on Thu morning, fresh winds from the ENE by Fri night).

Days 8–10 Weather Summary

Moderate rain (total 10mm), heaviest on Mon morning. Very mild (max 15°C on Mon afternoon, min 6°C on Sat night). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 11mm), heaviest on Thu night. Very mild (max 17°C on Fri afternoon, min 9°C on Fri morning). Winds increasing (light winds from the NW on Thu morning, strong winds from the NNW by Thu night).

Monday
29
Tuesday
30
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
Wave Height Map
High Tide
11:39PM0.93m
12:10PM0.74m
00:34AM0.91m
1:09PM0.75m
1:35AM0.89m
2:13PM0.78m
2:41AM0.89m
3:21PM0.84m
3:50AM0.90m
4:28PM0.94m
4:55AM0.93m
5:27PM1.05m
5:54AM0.97m
6:20PM1.15m
6:46AM0.99m
7:10PM1.22m
7:36AM1.00m
7:57PM1.25m
8:24AM0.99m
8:44PM1.24m
9:13AM0.96m
9:32PM1.18m
10:02AM0.91m
Low Tide
5:48AM0.13m
5:32PM0.12m
6:59AM0.15m
6:36PM0.16m
8:30AM0.13m
8:03PM0.16m
9:34AM0.08m
9:46PM0.12m
10:26AM0.02m
10:58PM0.05m
11:13AM-0.03m
11:59PM-0.02m
11:58AM-0.08m
00:55AM-0.09m
12:41PM-0.11m
1:47AM-0.13m
1:24PM-0.12m
2:36AM-0.14m
2:06PM-0.12m
3:24AM-0.11m
2:48PM-0.08m
4:11AM-0.06m
3:30PM-0.02m
Wave
height (m) 
direction
period (s) 
0.5
SE
9
0.4
ESE
9
0.6
ESE
6
0.4
ESE
11
0.4
SE
10
0.4
ESE
4
0.7
SE
4
0.6
SE
4
0.7
ENE
4
0.5
S
6
0.4
SSE
6
0.4
SSW
3
0.6
SSW
3
0.3
SSE
6
0.4
SE
12
0.7
E
4
0.6
E
4
0.4
SE
6
0.4
SE
3
0.3
SE
11
0.4
SE
10
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.4
ESE
10
0.6
SSE
7
0.8
SSE
7
1
S
5
1
S
6
1
S
6
0.8
S
6
0.7
S
7
0.7
SSE
7
1.4
S
7
1
S
9
0.6
S
9
heavy rain
part cloud
clear
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
part cloud
cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
light rain
part cloud
cloud
light rain
light rain
part cloud
part cloud
cloud
rain showers
cloud
cloud
rain showers
cloud
rain showers
rain showers
part cloud
clear
heavy rain
some clouds
clear
cloudy
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
clear
some clouds
cloudy
some clouds
some clouds
some clouds
cloudy
light rain
light rain
light rain
some clouds
cloudy
light rain
light rain
some clouds
some clouds
cloudy
rain shwrs
cloudy
cloudy
rain shwrs
cloudy
rain shwrs
rain shwrs
some clouds
clear
 km/h
20
WSW
15
NE
20
SSE
10
S
15
SE
20
E
20
ENE
25
NNE
25
NE
10
NNE
5
SSW
20
SSW
25
WSW
15
W
25
ESE
30
ENE
25
ENE
20
ESE
5
SE
10
S
15
SSW
10
SSW
10
S
0
SE
10
WNW
20
SW
25
SSW
30
SSW
25
SSW
30
SW
20
NW
10
SW
20
SE
40
W
20
NW
20
WNW
 mm 
14
1.0
5
1.0
3
1.0
1.0
1.0
1.0
8
max°C
16
18
13
10
10
11
9
10
7
7
8
9
9
17
18
12
6
7
6
7
9
14
14
15
15
10
10
12
12
13
15
14
12
13
13
17
Moonrise
12:56
1:44
2:24
2:56
3:23
3:48
4:12
4:36
5:03
5:35
6:13
7:00
Moonset
8:31
9:33
10:44
11:59
1:15
2:31
3:47
5:03
6:21
7:40
8:59
10:14
11:21
Sunrise
5:45
5:43
5:43
5:41
5:39
5:39
5:37
5:37
5:35
5:33
5:33
5:31
Sunset
7:39
7:40
7:42
7:43
7:44
7:45
7:46
7:47
7:49
7:50
7:51
7:52
7:52
Today's sea temperature in Block Island (Old Harbor) is 7.5 °C (Statistics for 28 Apr 1981-2005 – mean: 8.3 max: 10.0 min: 6.5°C)
Nearest