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 05:42 PM.

Days 1–3 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Thu afternoon, min 20°C on Sat morning). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Sun night, min 17°C on Tue night). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Warm (max 23°C on Fri afternoon, min 17°C on Wed morning). Winds increasing (light winds from the NNE on Thu afternoon, fresh winds from the ENE by Fri afternoon).

Days 10–12 Weather Summary

Light rain (total 3mm), mostly falling on Sat night. Warm (max 23°C on Sat morning, min 21°C on Mon morning). Wind will be generally light.

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
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
Wave Height Map
High Tide
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
4:08AM0.49m
5:28PM0.24m
4:57AM0.46m
Low Tide
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
10:05PM0.08m
11:38AM-0.09m
11:01PM0.07m
Wave
height (m) 
direction
period (s) 
0.4
NE
3
0.2
ENE
2
0.3
NW
2
0.2
NNE
2
0.1
NE
2
0.1
NE
2
0.1
NE
2
0
E
2
0
E
2
0.1
N
2
0.1
E
1
0.1
E
2
0.2
E
2
0.1
E
2
0.2
N
2
0.1
N
2
0.1
NW
2
0.4
NW
2
0.3
NNW
2
0.4
NW
3
0.3
NNE
3
0.5
N
3
0.2
NNE
2
0.2
NNE
2
0.4
NE
3
0.4
ENE
3
0.5
ENE
3
0.4
ENE
3
0.3
E
3
0.2
E
2
0.3
ENE
3
0.3
E
3
0.2
E
2
0.2
ENE
2
0.2
NNE
2
0.1
NE
2
part cloud
cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
rain showers
clear
rain showers
clear
clear
clear
clear
some clouds
cloudy
clear
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
some clouds
some clouds
clear
clear
clear
clear
clear
some clouds
some clouds
clear
clear
clear
clear
clear
clear
clear
some clouds
rain shwrs
clear
rain shwrs
clear
clear
clear
clear
 km/h
20
NNE
10
E
20
NNW
20
NNE
5
ENE
15
N
10
NNE
5
WNW
10
N
10
NE
10
E
10
E
15
NE
10
NE
15
N
10
N
15
NW
25
NNW
15
NNW
20
NW
25
NNE
30
N
10
NNE
15
NNE
25
NNE
25
ENE
30
ENE
20
NE
15
ENE
15
ENE
20
NE
15
E
10
NE
15
NNE
10
WNW
15
NE
 mm 
2
1
max°C
21
23
23
22
22
22
21
21
21
21
22
23
22
23
22
21
21
21
18
19
19
20
21
21
21
23
22
23
23
23
23
23
23
22
22
22
Moonrise
11:02
11:34
12:06
12:41
1:19
2:03
2:55
3:55
5:02
6:13
7:22
8:27
Moonset
10:54
11:51
12:50
1:51
2:57
4:06
5:17
6:27
7:29
8:23
9:08
Sunrise
7:05
7:05
7:05
7:05
7:07
7:07
7:07
7:07
7:07
7:07
7:09
7:09
Sunset
5:42
5:42
5:43
5:43
5:44
5:45
5:45
5:45
5:46
5:46
5:47
5:49
Today's sea temperature in Grassy Key (North) is
24.2° C
(Statistics for 25 Dec 1981-2005 – mean: 24.2 max: 26.1 min: 22.7°C)
Issued (local time): 6 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest