Flat Island Sea Conditions and Tide Table

Flat Island 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 —.

Days 1–4 Weather Summary

A light covering of new snow, mostly falling on Thu afternoon. Icy conditions (max 2°C on Thu afternoon, min -6°C on Sat morning). Winds increasing (light winds from the WNW on Thu morning, near gales from the N by Thu night).

Days 5–7 Weather Summary

Light rain (total 8mm), mostly falling on Mon night. Icy conditions (max 8°C on Mon night, min -3°C on Sat night). Winds increasing (light winds from the SW on Mon morning, gales from the W by Tue morning).

Days 8–10 Weather Summary

Light rain (total 7mm), mostly falling on Thu night. Freeze-thaw conditions (max 4°C on Thu morning, min 0°C on Tue night). Winds decreasing (near gales from the W on Tue night, light winds from the W by Fri morning).

Days 11–13 Weather Summary

Light rain (total 4mm), mostly falling on Mon morning. Freeze-thaw conditions (max 6°C on Mon afternoon, min -7°C on Sat night). Winds decreasing (strong winds from the NW on Fri night, light winds from the SW by Sun night).

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Mon
5
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
High Tide
1:40AM3.06m
1:47PM3.24m
2:25AM3.08m
2:35PM3.17m
3:12AM3.14m
3:28PM3.12m
4:01AM3.25m
4:26PM3.10m
4:55AM3.39m
5:27PM3.13m
5:51AM3.56m
6:29PM3.20m
6:48AM3.73m
7:28PM3.29m
7:45AM3.87m
8:27PM3.38m
8:41AM3.99m
9:23PM3.47m
9:36AM4.06m
10:16PM3.53m
10:29AM4.05m
11:08PM3.56m
11:21AM3.97m
Low Tide
7:09PM0.66m
7:18AM0.97m
7:51PM0.68m
8:08AM0.95m
8:37PM0.72m
9:03AM0.92m
9:26PM0.77m
10:01AM0.87m
10:18PM0.83m
11:01AM0.80m
11:13PM0.87m
12:02PM0.72m
00:10AM0.88m
1:03PM0.61m
1:06AM0.88m
2:01PM0.53m
2:05AM0.82m
2:58PM0.42m
3:02AM0.75m
3:53PM0.33m
3:59AM0.68m
4:47PM0.28m
4:54AM0.62m
Wave
height (m) 
direction
period (s) 
0.5
SSE
8
0.4
SSE
9
1.1
W
5
1.2
W
7
1.1
NW
7
0.8
NNW
3
0.5
N
3
0.5
NNW
3
0.8
WNW
4
1.2
WNW
6
1.3
WNW
7
1.3
WNW
6
0.9
WNW
6
0.4
SW
3
0.9
SSW
4
1.4
WSW
8
1.4
SW
10
1.4
SW
10
1.3
SW
10
1.2
SW
9
1.3
SW
8
1.3
SW
8
1.3
SW
8
1.1
SW
8
0.9
SW
7
0.8
SW
7
0.7
SW
6
1.2
WNW
6
1
W
6
1
W
6
0.7
W
5
0.7
W
4
0.6
W
4
0.5
SW
3
1.3
SW
7
1.2
SW
8
part cloud
cloud
light snow
light snow
cloud
cloud
cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
cloud
light rain
rain showers
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
mod rain
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
some clouds
cloudy
light snow
light snow
cloudy
cloudy
cloudy
some clouds
clear
some clouds
some clouds
clear
some clouds
cloudy
light rain
rain shwrs
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
mod rain
cloudy
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
light rain
light rain
 km/h
20
N
15
WSW
50
NW
50
N
45
N
35
N
25
N
30
NNW
40
NNW
50
NNW
55
NNW
55
NW
35
NW
20
SSW
40
SE
50
W
65
W
60
WSW
45
W
30
W
40
WSW
40
WSW
45
WSW
30
WSW
25
WSW
15
W
20
W
50
NW
40
NW
40
NW
25
NNW
35
WNW
25
WNW
30
SSW
45
SSW
40
W
 mm 
2
6
7
3
1
max°C
-2
-1
2
-1
-4
-5
-5
-5
-3
-2
-1
2
3
3
6
8
2
0
0
1
1
3
4
4
3
3
4
-1
-6
-6
-6
-4
-4
3
5
6
Moonrise
11:19
11:39
11:58
12:19
12:44
1:14
1:54
2:46
3:53
5:10
6:31
7:50
Moonset
9:30
10:40
11:50
1:02
2:18
3:37
4:59
6:20
7:32
8:30
9:14
9:47
Sunrise
7:54
7:54
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
Sunset
4:52
4:52
4:53
4:53
4:54
4:55
4:57
4:58
4:59
5:00
5:00
5:01
Today's sea temperature in Flat Island is
5.4° C
(Statistics for 24 Dec 1981-2005 – mean: 6.1 max: 7.2 min: 4.4°C)
Issued (local time): 7 pm Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest