Cos Cob Harbor Sea Conditions and Tide Table

Cos Cob 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 08:30 PM.

Days 1–4 Weather Summary

Moderate rain (total 10mm), heaviest on Thu night. Warm air temperatures (max 27°C on Wed afternoon, min 17°C on Tue night). Wind will be generally light.

Days 5–7 Weather Summary

Moderate rain (total 13mm), heaviest on Fri night. Warm air temperatures (max 28°C on Sun afternoon, min 17°C on Fri night). Wind will be generally light.

Days 8–10 Weather Summary

Some drizzle, heaviest during Tue afternoon. Warm (max 32°C on Tue afternoon, min 20°C on Mon night). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 11mm), heaviest on Sat night. Warm (max 36°C on Sat afternoon, min 22°C on Sat night). Wind will be generally light.

Days 14–17 Weather Summary

Heavy rain (total 22mm), heaviest during Tue morning. Warm (max 31°C on Mon afternoon, min 18°C on Mon night). Wind will be generally light.

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thu
9
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
night
AM
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
Wave Height Map
High Tide
7:29PM2.33m
8:02AM1.98m
8:22PM2.32m
8:58AM1.98m
9:11PM2.32m
9:48AM2.01m
9:58PM2.33m
10:34AM2.04m
10:41PM2.33m
11:16AM2.08m
11:22PM2.33m
11:56AM2.10m
00:02AM2.33m
12:35PM2.13m
00:41AM2.32m
1:14PM2.15m
1:20AM2.31m
1:52PM2.17m
2:00AM2.30m
2:31PM2.20m
2:40AM2.27m
3:11PM2.24m
3:23AM2.24m
3:52PM2.28m
4:09AM2.19m
4:36PM2.33m
4:59AM2.14m
5:24PM2.37m
Low Tide
2:06AM0.23m
2:12PM0.35m
3:00AM0.21m
3:03PM0.38m
3:49AM0.18m
3:51PM0.39m
4:35AM0.16m
4:38PM0.38m
5:18AM0.13m
5:21PM0.37m
5:58AM0.12m
6:03PM0.35m
6:37AM0.12m
6:43PM0.33m
7:15AM0.12m
7:23PM0.32m
7:52AM0.12m
8:03PM0.31m
8:29AM0.12m
8:44PM0.31m
9:07AM0.13m
9:27PM0.30m
9:47AM0.15m
10:15PM0.29m
10:30AM0.18m
11:07PM0.27m
11:17AM0.21m
Wave
Height (m)
Direction
Period (s)
part cloud
clear
clear
clear
clear
part cloud
mod rain
part cloud
cloud
mod rain
rain showers
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
thunderstorm
clear
part cloud
part cloud
clear
clear
clear
rain showers
clear
clear
clear
part cloud
part cloud
rain showers
clear
clear
clear
clear
part cloud
light rain
mod rain
part cloud
part cloud
cloud
mod rain
light rain
part cloud
some clouds
clear
clear
clear
clear
some clouds
mod rain
some clouds
cloudy
mod rain
rain shwrs
clear
clear
clear
clear
clear
clear
some clouds
some clouds
clear
risk tstorm
clear
some clouds
some clouds
clear
clear
clear
rain shwrs
clear
clear
clear
some clouds
some clouds
rain shwrs
clear
clear
clear
clear
some clouds
light rain
mod rain
some clouds
some clouds
cloudy
mod rain
light rain
some clouds
km/h
10
NNW
15
NW
15
WNW
5
NNE
5
SSE
20
S
15
S
10
WSW
10
SW
5
NNW
15
ENE
5
SE
0
NNE
10
E
5
SE
10
SSW
5
S
20
S
15
SW
25
SW
20
WSW
10
WNW
15
E
10
ESE
5
SSW
0
E
20
S
5
S
0
WNW
15
S
10
SW
15
WSW
20
WSW
10
WSW
15
NNW
20
NNW
5
NW
10
WNW
10
NW
10
NNE
10
SSW
10
W
10
WSW
0
SW
5
NNE
5
NE
5
NNE
 mm
10
10
3
1
1
10
2
9
10
1
max °C
20
24
27
26
23
27
21
20
23
21
19
23
22
22
28
24
25
28
22
27
32
31
23
25
23
26
30
27
28
34
29
33
36
25
28
32
28
28
31
28
20
24
24
22
20
20
25
Moonrise
3:59
5:03
6:06
7:05
8:00
8:47
9:27
9:59
10:27
10:51
11:13
11:34
11:55
12:19
12:46
Moonset
1:32
1:57
2:27
3:03
3:46
4:37
5:35
6:37
7:41
8:46
9:51
10:55
12:01
1:09
2:21
Sunrise
5:22
5:22
5:22
5:22
5:24
5:24
5:24
5:24
5:26
5:26
5:26
5:26
5:28
5:28
5:28
5:30
Sunset
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:30
8:29
8:29
8:29
8:29
8:28
Today's sea temperature in Cos Cob Harbor is
17.1° C
(Statistics for 23 Jun 1981-2005 – mean: 18.4 max: 21.2 min: 16.1°C)
Issued (local time): 7 pm Tuesday 23 Jun 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest