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 07:07 PM.

Days 1–4 Weather Summary

Heavy rain (total 33mm), heaviest during Thu night. Cool air temperatures (max 11°C on Sun morning, min 3°C on Sat morning). Winds increasing (light winds from the NNW on Thu afternoon, strong winds from the WNW by Fri night).

Days 5–7 Weather Summary

Heavy rain (total 21mm), heaviest during Tue afternoon. Cool air temperatures (max 14°C on Sun afternoon, min 5°C on Tue afternoon). Mainly strong winds.

Days 8–10 Weather Summary

Moderate rain (total 12mm), heaviest on Wed afternoon. Very mild (max 10°C on Fri afternoon, min 4°C on Thu morning). Winds increasing (light winds from the SE on Wed afternoon, strong winds from the WNW by Thu night).

Days 11–13 Weather Summary

Mostly dry. Very mild (max 16°C on Tue afternoon, min 5°C on Sun morning). Wind will be generally light.

Thu
28
Friday
29
Saturday
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
Tue
9
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
10:28PM0.92m
10:46AM0.74m
11:08PM0.89m
11:31AM0.70m
11:54PM0.86m
12:21PM0.67m
00:48AM0.83m
1:20PM0.66m
1:50AM0.82m
2:27PM0.67m
3:02AM0.84m
3:41PM0.72m
4:17AM0.88m
4:52PM0.82m
5:23AM0.95m
5:51PM0.95m
6:19AM1.02m
6:43PM1.08m
7:09AM1.06m
7:31PM1.18m
7:57AM1.08m
8:18PM1.24m
8:44AM1.05m
Low Tide
3:44PM0.00m
4:30AM0.05m
4:17PM0.03m
5:08AM0.09m
4:57PM0.07m
5:56AM0.14m
5:45PM0.10m
7:02AM0.17m
6:46PM0.13m
8:59AM0.16m
8:04PM0.14m
10:12AM0.11m
9:44PM0.10m
11:07AM0.03m
11:07PM0.02m
11:54AM-0.05m
00:10AM-0.06m
12:37PM-0.12m
1:06AM-0.15m
1:18PM-0.17m
1:58AM-0.20m
1:57PM-0.20m
2:48AM-0.22m
Wave
height (m) 
direction
period (s) 
0.8
SE
10
0.9
SE
10
1
SE
10
0.9
SE
10
1
SSW
7
1.2
W
4
0.9
SSW
7
0.8
S
7
0.5
SE
10
0.6
SE
10
0.6
S
7
0.4
SSE
8
0.4
SE
10
0.4
SE
10
0.5
SE
5
1.2
SE
5
1.2
SE
7
0.8
SE
6
1.2
S
8
1.3
S
10
1.8
S
10
1.6
S
10
1.4
S
10
1.1
NW
4
0.9
NNW
4
0.5
NNW
3
0.3
ESE
11
0.4
ENE
4
0.3
ESE
10
0.2
ESE
9
0.4
SSE
4
0.6
SW
3
0.5
SE
14
0.4
ESE
13
0.4
SE
12
0.4
SE
12
heavy rain
heavy rain
light rain
part cloud
clear
clear
clear
light rain
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
mod rain
mod rain
light rain
mod rain
rain showers
part cloud
light rain
part cloud
cloud
part cloud
clear
clear
cloud
part cloud
clear
clear
part cloud
clear
part cloud
clear
part cloud
heavy rain
heavy rain
light rain
some clouds
clear
clear
clear
light rain
clear
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
mod rain
mod rain
light rain
mod rain
rain shwrs
some clouds
light rain
some clouds
cloudy
some clouds
clear
clear
cloudy
some clouds
clear
clear
some clouds
clear
some clouds
clear
some clouds
 km/h
10
NNE
25
NNW
30
NW
30
WNW
35
WNW
40
W
30
WSW
20
WSW
20
WNW
20
NW
20
ESE
15
E
15
ESE
15
SE
25
ESE
45
E
20
NNE
10
E
10
NW
30
W
45
W
45
WNW
45
NW
40
NNW
40
NNW
25
NNW
15
NNE
15
SE
10
N
5
WSW
20
SW
25
WSW
10
WSW
15
SSW
10
W
15
SW
 mm 
11
19
1.0
2.0
10
10
1.0
10
1.0
1.0
max°C
9
10
6
9
7
4
8
9
11
14
11
6
6
6
6
5
9
7
9
8
4
6
6
6
10
8
7
8
7
6
7
8
11
13
15
15
Moonrise
10:48
11:56
1:02
2:05
3:00
3:46
4:24
4:55
5:22
5:47
6:11
6:37
Moonset
7:54
8:22
8:57
9:41
10:36
11:42
12:56
2:14
3:33
4:52
6:11
7:30
8:50
Sunrise
6:33
6:31
6:30
6:28
6:26
6:24
6:22
6:22
6:20
6:18
6:16
6:15
Sunset
7:07
7:07
7:08
7:09
7:10
7:12
7:13
7:15
7:15
7:16
7:17
7:19
Today's sea temperature in Block Island (Old Harbor) is 5.5 °C (Statistics for 28 Mar 1981-2005 – mean: 5.4 max: 6.8 min: 3.6°C)
Nearest