Onset Sea Conditions and Tide Table

Onset 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 06:56 AM and sunset is at 04:10 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Tue night. Icy conditions (max 6°C on Tue night, min -5°C on Mon morning). Winds increasing (calm on Mon night, fresh winds from the SSW by Tue night).

Days 4–6 Weather Summary

Light rain (total 2mm), mostly falling on Wed night. Icy conditions (max 10°C on Wed afternoon, min 0°C on Thu night). Winds decreasing (fresh winds from the SSW on Wed afternoon, calm by Fri afternoon).

Days 7–9 Weather Summary

Mild with light rain (total 4mm) on Sat morning. Becoming colder with a light covering of snow, mostly falling on Sat afternoon. Freeze-thaw conditions (max 3°C on Sat morning, min -8°C on Sat night). Winds decreasing (fresh winds from the NW on Sat afternoon, calm by Mon afternoon).

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 4°C on Wed night, min -7°C on Tue night). Wind will be generally light.

Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
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
9:57AM1.41m
10:25PM1.20m
10:53AM1.32m
11:22PM1.16m
11:49AM1.21m
00:19AM1.13m
12:45PM1.11m
1:16AM1.10m
1:39PM1.02m
2:12AM1.07m
2:34PM0.94m
3:08AM1.05m
3:30PM0.88m
4:05AM1.05m
4:26PM0.85m
4:59AM1.05m
5:20PM0.84m
5:48AM1.07m
6:08PM0.86m
6:32AM1.09m
6:51PM0.88m
7:12AM1.10m
7:29PM0.91m
Low Tide
4:51PM-0.04m
4:24AM-0.06m
5:43PM0.02m
5:18AM0.02m
6:39PM0.07m
6:17AM0.12m
7:45PM0.12m
7:32AM0.20m
8:51PM0.14m
9:32AM0.22m
9:38PM0.16m
10:35AM0.21m
10:11PM0.15m
11:18AM0.19m
10:44PM0.14m
11:53AM0.16m
11:19PM0.11m
12:28PM0.12m
11:58PM0.08m
1:05PM0.09m
00:39AM0.05m
1:44PM0.05m
1:21AM0.02m
Wave
height (m) 
direction
period (s) 
0.3
SE
9
0.3
ESE
9
0.8
WSW
4
0.8
NNW
4
0.6
N
4
0.3
E
8
0.2
E
9
0.4
SSW
3
1.1
SW
4
0.6
SW
3
1.3
SSW
5
1
SW
4
0.8
W
4
0.7
W
4
0.3
SSW
9
0.2
S
8
0.2
S
8
0.3
ESE
2
0.7
E
4
0.5
W
3
1.1
WNW
4
1
W
4
1
W
4
0.7
W
4
0.4
WSW
3
0.6
SSW
3
0.5
W
3
0.4
WNW
3
0.5
NW
3
0.5
NW
3
0.6
W
3
1.2
WSW
4
1.1
SW
4
0.6
W
3
0.4
S
10
0.3
S
10
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
light rain
part cloud
cloud
rain showers
clear
cloud
cloud
part cloud
cloud
part cloud
light rain
light snow
light snow
clear
clear
part cloud
light snow
light rain
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
clear
part cloud
some clouds
some clouds
clear
some clouds
some clouds
some clouds
some clouds
cloudy
light rain
some clouds
cloudy
rain shwrs
clear
cloudy
cloudy
some clouds
cloudy
some clouds
light rain
light snow
light snow
clear
clear
some clouds
light snow
light rain
some clouds
some clouds
some clouds
some clouds
clear
some clouds
cloudy
cloudy
clear
some clouds
 km/h
10
NW
10
SSW
20
W
25
NNW
15
N
10
NNW
10
SW
15
SSW
30
WSW
20
SW
35
SSW
25
WSW
20
W
20
WNW
10
WNW
5
WSW
5
SSE
5
ENE
15
ESE
15
W
30
WNW
25
WNW
25
WNW
15
W
15
WSW
5
W
15
W
15
WNW
20
NW
15
WNW
20
WSW
25
WSW
30
WSW
15
W
10
W
10
N
 mm 
1
2
3
1
max°C
3
3
2
-5
-4
-5
-2
3
6
9
10
8
4
3
1
3
3
2
3
1
-3
-4
-4
-1
2
3
0
-1
-1
-5
1
1
4
4
4
-1
Moonrise
7:07
8:24
9:37
10:45
11:50
12:53
1:55
2:58
4:01
5:05
6:07
Moonset
9:56
10:35
11:04
11:29
11:50
12:09
12:28
12:48
1:10
1:36
2:08
2:46
Sunrise
6:56
6:56
6:58
6:58
6:58
7:00
7:01
7:01
7:01
7:03
7:03
7:03
Sunset
4:10
4:10
4:10
4:10
4:12
4:12
4:12
4:12
4:12
4:13
4:13
4:13
Today's sea temperature in Onset is
7.8° C
(Statistics for 07 Dec 1981-2005 – mean: 9.2 max: 11.5 min: 7.6°C)
Issued (local time): 6 am Sunday 07 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest