Grassy Key (South) Sea Conditions and Tide Table

Grassy Key (South) 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 06:15 PM.

Days 1–4 Weather Summary

Light rain (total 7mm), mostly falling on Wed night. Warm air temperatures (max 24°C on Wed afternoon, min 23°C on Thu night). Mainly fresh winds.

Days 5–7 Weather Summary

Mostly dry. Warm air temperatures (max 24°C on Sat afternoon, min 22°C on Mon morning). Winds decreasing (fresh winds from the SE on Sat night, light winds from the NNE by Mon afternoon).

Days 8–10 Weather Summary

Light rain (total 2mm), mostly falling on Fri morning. Warm (max 24°C on Tue afternoon, min 23°C on Tue night). Winds increasing (calm on Wed night, strong winds from the NE by Thu night).

Days 11–13 Weather Summary

Light rain (total 4mm), mostly falling on Sat morning. Warm (max 24°C on Fri night, min 23°C on Fri afternoon). Winds decreasing (fresh winds from the E on Fri night, calm by Sun afternoon).

Wed
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Mon
24
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
8:54PM0.59m
9:41AM0.37m
9:31PM0.55m
10:02AM0.40m
10:07PM0.51m
10:25AM0.44m
10:43PM0.45m
10:51AM0.47m
11:21PM0.40m
11:22AM0.48m
00:03AM0.34m
11:55AM0.49m
00:50AM0.28m
12:35PM0.48m
1:47AM0.23m
1:22PM0.48m
3:09AM0.19m
2:21PM0.48m
3:31PM0.49m
7:19AM0.21m
4:47PM0.52m
7:29AM0.24m
Low Tide
2:27PM-0.00m
3:32AM-0.13m
3:12PM-0.03m
4:03AM-0.09m
3:57PM-0.05m
4:31AM-0.05m
4:40PM-0.05m
4:57AM-0.01m
5:25PM-0.05m
5:19AM0.04m
6:14PM-0.04m
5:36AM0.09m
7:10PM-0.02m
8:18PM-0.01m
9:37PM-0.02m
10:51PM-0.04m
11:53PM-0.07m
10:10AM0.19m
00:42AM-0.11m
11:24AM0.15m
Wave
height (m) 
direction
period (s) 
0.6
SE
3
0.8
SE
4
0.6
SE
3
0.4
ESE
3
0.3
ESE
3
0.5
E
3
0.5
E
3
0.7
E
3
0.9
ESE
4
0.7
ESE
3
0.7
SE
4
0.6
SE
3
0.4
SSE
3
0.2
NNE
3
0.1
NE
2
0
E
2
0.3
ENE
3
0.3
E
3
0.4
ESE
3
0.7
ESE
3
0.6
ESE
3
0.4
SE
3
0.1
SE
2
0.1
NE
2
0.3
E
2
0.8
ENE
4
0.6
E
3
0.5
E
3
0.7
E
3
0.5
E
3
0.5
E
3
0.3
E
3
0.4
SE
3
0.2
ESE
2
0.1
SE
2
0.3
SW
2
clear
thunderstorm
thunderstorm
clear
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
thunderstorm
clear
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
clear
risk tstorm
risk tstorm
clear
rain shwrs
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
clear
clear
clear
clear
clear
some clouds
risk tstorm
clear
risk tstorm
risk tstorm
clear
clear
clear
clear
clear
clear
 km/h
25
SE
30
SE
25
SE
15
ESE
20
E
25
E
25
E
35
E
35
ESE
25
ESE
35
SE
25
S
15
SW
10
NW
10
NNE
10
NNE
20
E
20
E
25
E
30
ESE
25
SE
15
SSE
5
NNW
15
NNE
20
E
35
ENE
25
E
25
ENE
30
E
25
E
25
E
20
E
15
SE
10
SSE
15
S
25
WSW
 mm 
5
1.0
1.0
2.0
1.0
3
max°C
24
24
24
24
24
23
24
23
23
24
24
24
24
23
22
23
23
24
24
24
24
24
24
23
23
24
24
23
24
23
24
24
24
24
24
24
Moonrise
6:33
7:27
8:19
9:10
10:01
10:52
11:45
12:40
1:37
2:35
3:31
4:24
Moonset
7:09
7:43
8:13
8:42
9:10
9:39
10:10
10:45
11:24
12:09
1:00
1:58
3:01
Sunrise
6:58
6:58
6:56
6:56
6:56
6:54
6:54
6:54
6:52
6:52
6:50
6:50
Sunset
6:15
6:16
6:16
6:17
6:17
6:19
6:20
6:20
6:21
6:21
6:22
6:22
Today's sea temperature in Grassy Key (South) is 24.7 °C (Statistics for 12 Feb 1981-2005 – mean: 23.5 max: 24.8 min: 22.3°C)
Issued (local time): 6 pm Wednesday 12 Feb 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest