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 05:52 AM and sunset is at 08:49 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Fri morning. Low air temperatures (max 9°C on Fri morning, min 6°C on Sun morning). Winds decreasing (near gales from the SSW on Fri afternoon, light winds from the NW by Sun night).

Days 4–6 Weather Summary

Mostly dry. Cool air temperatures (max 19°C on Wed night, min 8°C on Mon morning). Mainly fresh winds.

Days 7–9 Weather Summary

Moderate rain (total 17mm), heaviest on Sat morning. Warm (max 20°C on Thu night, min 9°C on Sat night). Winds decreasing (fresh winds from the SSW on Sat morning, calm by Sat night).

Days 10–12 Weather Summary

Heavy rain (total 26mm), heaviest during Mon morning. Very mild (max 13°C on Mon morning, min 8°C on Sun morning). Winds decreasing (fresh winds from the ESE on Sun morning, light winds from the WSW by Tue night).

Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunday
1
Monday
2
Tuesday
3
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
7:23AM3.24m
7:51PM3.51m
8:22AM3.35m
8:43PM3.74m
9:18AM3.46m
9:35PM3.94m
10:13AM3.56m
10:27PM4.08m
11:06AM3.62m
11:18PM4.14m
11:58AM3.62m
00:10AM4.11m
12:51PM3.57m
1:03AM4.00m
1:44PM3.48m
1:57AM3.82m
2:38PM3.37m
2:51AM3.61m
3:33PM3.26m
3:48AM3.39m
4:29PM3.17m
4:45AM3.21m
5:24PM3.13m
5:43AM3.07m
Low Tide
1:16PM0.67m
1:54AM0.57m
2:08PM0.65m
2:51AM0.43m
3:01PM0.64m
3:45AM0.33m
3:53PM0.65m
4:40AM0.28m
4:46PM0.67m
5:34AM0.27m
5:40PM0.71m
6:28AM0.31m
6:35PM0.76m
7:23AM0.38m
7:31PM0.82m
8:19AM0.47m
8:30PM0.88m
9:14AM0.57m
9:31PM0.94m
10:10AM0.67m
10:32PM0.97m
11:04AM0.76m
11:32PM0.98m
Wave
height (m) 
direction
period (s) 
1.2
S
10.0
1.5
SSW
9.0
1.2
SW
8.0
0.9
S
8.0
0.7
S
8.0
0.7
SSW
8.0
0.8
SSW
8.0
0.9
SSW
8.0
0.8
SW
7.0
0.5
SW
7.0
0.6
WNW
3.0
0.5
W
3.0
0.4
WSW
4.0
0.4
WSW
4.0
0.4
WSW
4.0
0.4
SW
4.0
0.3
SW
5.0
0.4
SW
4.0
0.4
WSW
4.0
0.5
SW
4.0
0.7
WSW
5.0
0.8
WSW
5.0
0.8
WSW
5.0
0.7
SW
5.0
0.9
SW
5.0
0.8
SSW
6.0
0.7
SSW
6.0
0.7
S
7.0
0.8
S
8.0
0.7
S
7.0
0.7
SSW
8.0
0.8
SSW
8.0
0.9
SW
8.0
1
SW
9.0
1
SW
9.0
0.9
SW
8.0
light rain
cloud
part cloud
clear
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
mod rain
mod rain
cloud
cloud
cloud
light rain
heavy rain
heavy rain
light rain
cloud
part cloud
cloud
part cloud
light rain
cloudy
some clouds
clear
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
mod rain
mod rain
cloudy
cloudy
cloudy
light rain
heavy rain
heavy rain
light rain
cloudy
some clouds
cloudy
some clouds
 km/h
40
SE
60
SSW
30
WSW
25
SSW
20
SW
20
WSW
25
W
30
WNW
25
NW
20
WNW
25
NW
20
WNW
15
W
20
W
15
W
10
W
15
W
15
W
15
W
25
W
25
WSW
30
SW
30
SW
25
SW
30
SSW
20
W
15
WNW
30
ESE
35
ESE
25
ESE
20
SE
30
S
20
S
20
SSW
20
WSW
15
SW
 mm 
1
10
7
1
12
11
2
max°C
9
7
8
8
9
7
7
7
8
9
13
13
14
18
18
18
18
19
17
18
20
14
14
14
11
10
10
9
9
12
13
13
11
10
12
12
Moonrise
3:32
3:55
4:22
4:55
5:39
6:35
7:42
8:57
10:12
11:25
12:34
1:39
Moonset
4:45
6:06
7:31
8:56
10:15
11:22
12:13
12:52
1:21
1:45
2:04
Sunrise
5:52
5:50
5:50
5:48
5:48
5:48
5:47
5:47
5:46
5:46
5:45
5:45
Sunset
8:49
8:50
8:51
8:52
8:52
8:53
8:54
8:55
8:57
8:57
8:58
8:59
Today's sea temperature in Flat Island is 6.4 °C (Statistics for 23 May 1981-2005 – mean: 7.4 max: 9.2 min: 6.2°C)
Issued (local time): 8 am Friday 23 May 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest