Nummy Island, Grassy Sound Channel Sea Conditions and Tide Table

Nummy Island, Grassy Sound Channel 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 07:16 AM and sunset is at 04:42 PM.

Days 1–3 Weather Summary

Moderate rain (total 12mm), heaviest on Fri night. Icy conditions (max 9°C on Thu afternoon, min -4°C on Thu night). Wind will be generally light.

Days 4–6 Weather Summary

Light rain (total 4mm), mostly falling on Mon afternoon. Icy conditions (max 14°C on Mon morning, min -1°C on Sun morning). Winds increasing (light winds from the WNW on Sun morning, strong winds from the WNW by Mon night).

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 8°C on Fri night, min -6°C on Thu night). Wind will be generally light.

Days 10–12 Weather Summary

Some drizzle, heaviest during Sat night. Freeze-thaw conditions (max 10°C on Sat morning, min -6°C on Mon night). 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
11:06AM1.22m
11:47PM1.09m
11:57AM1.18m
00:37AM1.14m
12:51PM1.15m
1:30AM1.21m
1:49PM1.11m
2:27AM1.27m
2:53PM1.09m
3:28AM1.35m
4:00PM1.09m
4:30AM1.42m
5:07PM1.13m
5:31AM1.48m
6:08PM1.18m
6:28AM1.54m
7:03PM1.23m
7:21AM1.57m
7:56PM1.26m
8:12AM1.56m
8:48PM1.27m
9:03AM1.51m
9:41PM1.26m
Low Tide
5:38PM0.00m
5:48AM0.16m
6:23PM0.01m
6:54AM0.17m
7:18PM0.01m
8:10AM0.15m
8:21PM0.00m
9:21AM0.09m
9:22PM-0.03m
10:24AM0.00m
10:21PM-0.07m
11:23AM-0.08m
11:19PM-0.11m
12:21PM-0.16m
00:16AM-0.15m
1:16PM-0.22m
1:13AM-0.18m
2:09PM-0.26m
2:08AM-0.19m
2:59PM-0.27m
3:00AM-0.18m
3:46PM-0.26m
3:49AM-0.14m
Wave
height (m) 
direction
period (s) 
0.7
SSW
3
0.9
E
10
1
E
10
0.8
E
10
0.8
E
10
1
SE
4
0.9
E
5
1.6
ENE
7
1.1
E
7
0.8
E
6
0.7
E
6
1.3
S
5
1.5
S
6
1.1
S
7
1.2
W
4
0.9
WNW
4
0.9
WNW
4
0.5
W
3
0.4
WSW
3
0.4
WSW
3
0.5
S
4
0.6
S
5
0.4
S
5
0.9
NE
5
0.5
NE
4
0.3
ESE
11
0.6
SSE
3
0.7
SSE
4
0.7
SSE
4
0.6
S
5
0.6
SSE
6
0.5
SSE
6
0.3
ESE
10
0.3
ESE
10
0.4
ESE
10
1
NNE
5
part cloud
part cloud
clear
cloud
light rain
heavy rain
cloud
cloud
part cloud
cloud
cloud
part cloud
part cloud
light rain
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
light rain
clear
cloud
cloud
part cloud
part cloud
clear
some clouds
some clouds
clear
cloudy
light rain
heavy rain
cloudy
cloudy
some clouds
cloudy
cloudy
some clouds
some clouds
light rain
clear
clear
clear
clear
clear
clear
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
light rain
clear
cloudy
cloudy
some clouds
some clouds
clear
 km/h
25
SW
20
NW
25
NNW
10
ENE
15
SE
20
SSE
20
NNE
25
NE
10
N
10
WNW
10
SSW
35
SSW
35
SW
20
WSW
45
WNW
35
WNW
30
WNW
20
W
20
WSW
20
W
15
WSW
20
W
15
NW
20
NNE
10
ENE
10
ESE
20
S
20
SSW
15
SW
15
NW
15
N
5
E
5
NNE
10
NW
20
NNW
25
N
 mm 
1
11
4
1
max°C
7
9
2
0
3
6
5
4
0
1
4
9
14
12
4
0
1
1
4
4
4
5
6
-4
-2
0
8
10
10
6
4
3
4
4
5
-1
Moonrise
10:49
11:13
11:36
12:01
12:29
1:04
1:47
2:43
3:50
5:05
6:22
7:37
Moonset
10:20
11:27
12:35
1:46
3:02
4:20
5:38
6:48
7:48
8:35
9:11
Sunrise
7:16
7:16
7:16
7:16
7:16
7:16
7:16
7:18
7:18
7:18
7:18
7:18
Sunset
4:42
4:43
4:43
4:44
4:45
4:45
4:45
4:46
4:47
4:49
4:50
4:51
Today's sea temperature in Nummy Island, Grassy Sound Channel is
5.7° C
(Statistics for 25 Dec 1981-2005 – mean: 7.1 max: 9.4 min: 4.6°C)
Issued (local time): 6 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest