Grassy Key (North) Sea Conditions and Tide Table

Grassy Key (North) 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 07:05 AM and sunset is at 05:40 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Thu night. Warm air temperatures (max 23°C on Tue night, min 21°C on Thu night). Winds decreasing (fresh winds from the ENE on Tue night, calm by Fri afternoon).

Days 4–6 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Sun afternoon, min 21°C on Fri night). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 3mm), mostly falling on Thu morning. Warm (max 22°C on Wed afternoon, min 14°C on Tue night). Mainly fresh winds.

Days 10–12 Weather Summary

Light rain (total 8mm), mostly falling on Sat night. Warm (max 23°C on Sat afternoon, min 18°C on Fri morning). Winds increasing (light winds from the NNE on Fri afternoon, strong winds from the ENE by Sun morning).

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sun
4
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
6:45PM0.27m
6:24AM0.41m
7:25PM0.28m
7:15AM0.37m
8:07PM0.31m
8:13AM0.32m
8:51PM0.34m
9:20AM0.27m
9:38PM0.38m
10:38AM0.23m
10:29PM0.42m
12:17PM0.21m
11:25PM0.45m
2:14PM0.20m
00:23AM0.48m
3:18PM0.20m
1:23AM0.50m
3:55PM0.21m
2:22AM0.52m
4:27PM0.21m
3:17AM0.51m
4:58PM0.22m
Low Tide
1:17PM0.01m
11:40PM0.16m
1:54PM0.04m
1:09AM0.15m
2:31PM0.06m
2:56AM0.12m
3:10PM0.10m
4:21AM0.08m
3:52PM0.12m
5:31AM0.03m
4:40PM0.15m
6:33AM-0.03m
5:33PM0.16m
7:31AM-0.08m
6:25PM0.16m
8:24AM-0.11m
7:23PM0.14m
9:16AM-0.12m
8:16PM0.12m
10:05AM-0.12m
9:10PM0.10m
10:53AM-0.11m
Wave
height (m) 
direction
period (s) 
0.5
E
3
0.5
E
3
0.5
E
3
0.4
ENE
3
0.3
ENE
2
0.2
NNE
3
0.3
NE
2
0.1
NE
2
0.1
N
2
0.1
NE
2
0
E
2
0
E
2
0.1
N
1
0.1
E
1
0.1
E
2
0.1
NE
2
0.1
NW
2
0.4
NW
3
0.4
NNW
3
0.4
NW
3
0.5
N
3
0.4
NNE
3
0.2
WNW
3
0.4
NE
3
0.4
NE
3
0.3
ENE
3
0.3
ENE
3
0.4
NE
3
0.1
NE
3
0.4
NE
3
0.4
NE
3
0.6
E
3
0.5
E
3
1.2
E
4
1
E
4
clear
clear
clear
clear
part cloud
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
rain showers
clear
clear
clear
clear
part cloud
rain showers
rain showers
clear
clear
clear
clear
clear
some clouds
rain shwrs
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain shwrs
rain shwrs
rain shwrs
clear
clear
clear
clear
some clouds
rain shwrs
rain shwrs
clear
 km/h
25
NE
30
ENE
25
ENE
20
NE
15
E
15
N
20
NNE
5
ENE
10
N
10
N
5
WNW
10
N
10
NE
10
E
5
ENE
10
N
20
WNW
25
NW
25
NNW
25
NW
30
N
25
NNE
10
NNE
20
NNE
20
NNE
20
NE
20
NE
25
NNE
10
NNE
25
NE
25
NE
30
ENE
25
ENE
45
ENE
35
ENE
 mm 
1
1
2
2
4
2
max°C
23
23
22
23
23
22
22
22
22
21
22
21
21
23
23
21
21
21
19
19
19
18
22
21
21
21
21
20
21
21
22
23
23
23
23
Moonrise
10:28
11:02
11:34
12:06
12:41
1:19
2:03
2:55
3:55
5:02
6:13
7:22
Moonset
9:58
10:54
11:51
12:50
1:51
2:57
4:06
5:17
6:27
7:29
8:23
Sunrise
7:05
7:05
7:05
7:05
7:05
7:07
7:07
7:07
7:07
7:07
7:07
7:09
Sunset
5:40
5:42
5:42
5:43
5:43
5:44
5:45
5:45
5:45
5:46
5:46
5:47
Today's sea temperature in Grassy Key (North) is
24.5° C
(Statistics for 24 Dec 1981-2005 – mean: 24.4 max: 26.1 min: 22.9°C)
Issued (local time): 12 am Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest