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 06:35 AM and sunset is at 04:19 PM.

Days 1–3 Weather Summary

Mostly dry. Low air temperatures (max 7°C on Tue morning, min 2°C on Tue night). Wind will be generally light.

Days 4–6 Weather Summary

Moderate rain (total 10mm), heaviest on Fri night. Cool air temperatures (max 11°C on Fri night, min 2°C on Sat night). Wind will be generally light.

Days 7–9 Weather Summary

Moderate rain (total 19mm), heaviest on Wed afternoon. Mild temperatures (max 9°C on Mon morning, min 5°C on Mon night). Wind will be generally light.

Days 10–12 Weather Summary

Moderate rain (total 16mm), heaviest on Sat morning. Very mild (max 17°C on Fri night, min 1°C on Sat night). Winds increasing (calm on Thu afternoon, strong winds from the S by Fri night).

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
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
7:17PM1.00m
7:35AM1.22m
7:53PM1.00m
8:10AM1.20m
8:29PM0.98m
8:43AM1.17m
9:04PM0.96m
9:17AM1.12m
9:41PM0.93m
9:54AM1.08m
10:21PM0.90m
10:35AM1.04m
11:05PM0.87m
11:21AM1.01m
11:54PM0.87m
12:10PM0.99m
00:44AM0.90m
1:02PM0.98m
1:36AM0.95m
1:56PM0.98m
2:31AM1.02m
2:53PM0.99m
3:28AM1.12m
Low Tide
1:25PM0.08m
1:06AM0.05m
2:01PM0.05m
1:43AM0.04m
2:39PM0.05m
2:22AM0.04m
3:17PM0.05m
3:01AM0.05m
3:56PM0.08m
3:40AM0.08m
4:33PM0.11m
4:19AM0.11m
5:11PM0.14m
4:59AM0.14m
5:52PM0.16m
5:44AM0.17m
6:38PM0.17m
6:39AM0.20m
7:32PM0.16m
7:48AM0.21m
8:34PM0.12m
9:13AM0.18m
9:32PM0.06m
Wave
height (m) 
direction
period (s) 
0.8
WNW
4
0.7
W
4
0.3
WNW
2
0.1
E
14
0.1
E
13
0.1
E
13
0.1
E
12
0.1
S
7
0.1
S
7
0.1
S
6
0.3
SW
2
0.5
SSW
3
0.3
SSE
5
0.5
NNE
3
0.3
E
6
0.2
S
7
0.2
S
8
0.3
WSW
2
0.4
WNW
3
0.3
ESE
9
0.3
ESE
9
0.4
WNW
3
0.1
E
9
0.1
E
9
0.2
E
9
1
SE
4
0.8
SE
8
0.6
SE
8
0.4
SSE
8
0.4
SE
8
0.4
SE
7
1
ESE
4
1.5
SSE
5
1
S
10
1.2
S
11
1.3
WSW
4
clear
clear
part cloud
part cloud
clear
part cloud
cloud
part cloud
clear
clear
part cloud
light rain
light rain
part cloud
clear
clear
part cloud
part cloud
clear
cloud
part cloud
clear
clear
part cloud
light rain
heavy rain
light rain
cloud
part cloud
cloud
cloud
light rain
mod rain
light rain
clear
clear
clear
clear
some clouds
some clouds
clear
some clouds
cloudy
some clouds
clear
clear
some clouds
light rain
light rain
some clouds
clear
clear
some clouds
some clouds
clear
cloudy
some clouds
clear
clear
some clouds
light rain
heavy rain
light rain
cloudy
some clouds
cloudy
cloudy
light rain
mod rain
light rain
clear
clear
 km/h
25
WNW
20
W
10
W
5
W
5
NE
5
NNW
5
NNE
5
NE
5
WNW
10
SW
15
SSW
15
SW
15
N
15
N
10
NNW
5
WSW
10
SSW
10
WSW
15
WNW
10
W
10
WSW
15
NW
5
NNW
5
NNE
10
ESE
25
SE
15
NNE
20
N
10
NNW
5
SW
10
SE
20
ESE
35
S
30
SSW
35
SW
30
WSW
 mm 
5
5
1
14
4
5
6
5
max°C
7
7
4
7
7
5
7
6
5
9
10
11
9
7
4
6
6
6
9
9
7
9
9
7
5
6
9
7
6
8
9
11
17
14
8
5
Moonrise
5:06
6:09
7:13
8:14
9:10
10:00
10:41
11:16
11:44
12:09
12:32
12:53
Moonset
3:07
3:34
4:07
4:48
5:38
6:35
7:38
8:45
9:53
11:01
12:11
Sunrise
6:35
6:35
6:37
6:39
6:39
6:41
6:41
6:43
6:43
6:46
6:47
6:48
Sunset
4:19
4:17
4:17
4:16
4:15
4:15
4:15
4:15
4:14
4:14
4:13
4:13
Today's sea temperature in Onset is
10.6° C
(Statistics for 18 Nov 1981-2005 – mean: 10.9 max: 12.4 min: 9.1°C)
Issued (local time): 12 pm Tuesday 18 Nov 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest