Old Greenwich Sea Conditions and Tide Table

Old Greenwich 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 06:39 AM and sunset is at 06:54 PM.

Days 1–3 Weather Summary

Moderate rain (total 17mm), heaviest on Sun morning. Warm air temperatures (max 21°C on Mon afternoon, min 9°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Moderate rain (total 18mm), heaviest on Fri night. Cool air temperatures (max 19°C on Thu afternoon, min 9°C on Wed morning). Winds increasing (moderate winds from the NE on Thu night, strong winds from the NNE by Fri night).

Days 7–9 Weather Summary

Heavy rain (total 26mm), heaviest during Sat morning. Very mild (max 15°C on Sat night, min 11°C on Sun afternoon). Winds decreasing (strong winds from the NE on Sat morning, light winds from the NNE by Mon night).

Days 10–12 Weather Summary

Light rain (total 8mm), mostly falling on Tue afternoon. Warm (max 24°C on Wed afternoon, min 8°C on Fri morning). Wind will be generally light.

Days 13–16 Weather Summary

Mostly dry. Warm (max 20°C on Mon afternoon, min 9°C on Sun morning). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
1
Friday
2
Saturday
3
Sunday
4
Mon
5
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
PM
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
Wave Height Map
High Tide
6:58AM2.01m
7:17PM2.22m
7:53AM2.10m
8:11PM2.28m
8:42AM2.20m
9:00PM2.35m
9:27AM2.32m
9:45PM2.41m
10:08AM2.43m
10:27PM2.46m
10:47AM2.53m
11:08PM2.49m
11:26AM2.61m
11:48PM2.49m
12:05PM2.66m
00:29AM2.46m
12:45PM2.69m
1:12AM2.40m
1:28PM2.68m
1:58AM2.32m
2:16PM2.63m
2:50AM2.23m
3:09PM2.54m
3:48AM2.13m
4:10PM2.44m
4:54AM2.08m
5:19PM2.36m
6:06AM2.08m
6:32PM2.32m
Low Tide
1:08PM0.59m
1:46AM0.45m
2:03PM0.53m
2:35AM0.37m
2:54PM0.43m
3:21AM0.28m
3:40PM0.30m
4:02AM0.18m
4:22PM0.16m
4:41AM0.09m
5:03PM0.02m
5:19AM0.02m
5:44PM-0.08m
5:57AM-0.03m
6:25PM-0.14m
6:35AM-0.03m
7:08PM-0.16m
7:16AM0.01m
7:54PM-0.12m
8:01AM0.09m
8:44PM-0.03m
8:53AM0.20m
9:42PM0.08m
9:53AM0.32m
10:46PM0.19m
11:02AM0.41m
11:55PM0.26m
12:18PM0.43m
Wave
Height (m)
Direction
Period (s)
mod rain
light rain
rain showers
part cloud
cloud
cloud
light rain
light rain
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
light rain
heavy rain
light rain
light rain
cloud
light rain
mod rain
light rain
light rain
light rain
light rain
cloud
light rain
part cloud
part cloud
clear
rain showers
rain showers
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
mod rain
light rain
rain shwrs
some clouds
cloudy
cloudy
light rain
light rain
cloudy
cloudy
some clouds
some clouds
some clouds
clear
some clouds
cloudy
light rain
heavy rain
light rain
light rain
cloudy
light rain
mod rain
light rain
light rain
light rain
light rain
cloudy
light rain
some clouds
some clouds
clear
rain shwrs
rain shwrs
some clouds
some clouds
clear
some clouds
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
km/h
20
SSE
15
S
20
N
20
NE
10
ENE
20
ENE
25
NE
20
ENE
25
NE
30
ENE
30
E
25
NE
30
NE
25
ENE
20
NE
30
NE
40
NNE
45
NNE
45
NE
35
NE
30
NE
40
NE
35
NE
30
NE
30
NE
25
NE
20
NNE
10
N
10
NW
10
W
10
W
15
WSW
10
W
15
NW
20
NW
10
WNW
20
NW
25
NW
20
W
25
NW
25
NW
10
WNW
5
NNW
5
SSW
10
SW
15
SSW
20
S
 mm
6
5
2
2
2
1
17
5
1
4
8
4
1
1
2
5
2
1
max °C
18
20
20
17
21
18
12
12
13
13
18
14
13
19
15
15
16
13
14
14
15
14
11
13
14
13
12
13
14
14
19
24
22
15
17
13
12
16
14
13
17
14
13
18
17
18
20
Moonrise
3:59
4:33
5:01
5:26
5:48
6:10
6:32
6:56
7:24
7:58
8:40
9:33
10:37
11:49
1:05
Moonset
12:04
1:06
2:10
3:16
4:22
5:29
6:37
7:47
9:00
10:16
11:32
12:46
1:51
2:46
3:29
4:04
Sunrise
6:39
6:39
6:41
6:41
6:43
6:43
6:45
6:46
6:47
6:48
6:48
6:50
6:50
6:52
6:52
6:54
Sunset
6:54
6:53
6:52
6:50
6:49
6:46
6:45
6:44
6:42
6:39
6:37
6:37
6:35
6:32
6:31
6:30
Today's sea temperature in Old Greenwich is
23.3°C
(Statistics for 20 Sep 1981-2005 – mean: 19.5 max: 21.2 min: 17.0°C)
Issued (local time): 7 am Sunday 20 Sep 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest