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 07:07 AM and sunset is at 04:37 PM.

Days 1–3 Weather Summary

Light rain (total 2mm), mostly falling on Sat afternoon. Icy conditions (max 8°C on Wed night, min -5°C on Thu night). Mainly fresh winds.

Days 4–6 Weather Summary

A moderate fall of snow, heaviest on Sun night. Icy conditions (max 5°C on Sun morning, min -10°C on Mon night). Wind will be generally light.

Days 7–9 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 3°C on Fri morning, min -9°C on Wed night). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 37mm), mainly falling on Sat night. Becoming colder with a light covering of snow, mostly falling on Sun afternoon. Freeze-thaw conditions (max 7°C on Sat afternoon, min -18°C on Sun night). Wind will be generally light.

Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Fri
30
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
Wave Height Map
High Tide
6:20PM0.80m
6:47AM1.00m
7:01PM0.86m
7:25AM1.05m
7:39PM0.91m
7:59AM1.09m
8:16PM0.96m
8:34AM1.11m
8:53PM0.99m
9:10AM1.12m
9:33PM1.02m
9:50AM1.12m
10:14PM1.04m
10:33AM1.09m
10:59PM1.06m
11:20AM1.05m
11:47PM1.08m
12:10PM0.99m
00:38AM1.09m
1:04PM0.94m
1:34AM1.10m
2:03PM0.90m
2:34AM1.11m
3:07PM0.88m
3:43AM1.13m
4:16PM0.90m
4:54AM1.17m
5:24PM0.97m
Low Tide
12:44PM0.10m
00:16AM0.05m
1:27PM0.05m
1:03AM0.00m
2:08PM0.01m
1:47AM-0.04m
2:46PM-0.03m
2:29AM-0.06m
3:20PM-0.07m
3:09AM-0.08m
3:51PM-0.09m
3:48AM-0.08m
4:22PM-0.10m
4:28AM-0.06m
4:54PM-0.11m
5:10AM-0.04m
5:29PM-0.10m
5:56AM0.01m
6:10PM-0.08m
6:52AM0.06m
6:59PM-0.05m
8:05AM0.10m
7:59PM-0.02m
9:57AM0.11m
9:10PM-0.00m
11:25AM0.07m
10:24PM-0.02m
12:28PM0.02m
Wave
height (m) 
direction
period (s) 
0.5
S
8
0.9
SW
4
1
WSW
4
1.2
W
4
0.9
WSW
4
0.5
SE
11
0.5
SE
10
0.6
SSE
10
0.4
S
9
0.3
S
9
0.3
S
8
0.7
NE
4
0.8
SE
9
1.2
WSW
4
1.2
WSW
4
0.7
W
4
0.6
W
3
0.9
W
4
0.4
WNW
3
0.3
WNW
3
0.2
ESE
11
0.8
W
4
0.4
WNW
3
0.2
ESE
10
0.3
ESE
10
0.4
SE
10
0.6
SW
3
0.2
ESE
10
0.4
ESE
10
0.4
S
6
0.8
NNE
4
0.9
NNE
4
0.9
NNW
4
0.7
NW
4
0.6
NNW
3
0.6
NNW
3
0.2
E
10
0.2
E
10
0.2
ESE
10
0.4
S
3
0.6
S
4
0.4
SSE
5
0.4
SSE
8
0.5
SSE
9
0.6
SSE
9
0.6
SSE
9
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
rain showers
cloud
cloud
cloud
heavy snow
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
light snow
part cloud
clear
clear
part cloud
part cloud
part cloud
mod rain
mod rain
heavy rain
light snow
light snow
light snow
cloud
cloud
part cloud
clear
cloud
cloud
cloud
light rain
light snow
part cloud
clear
part cloud
cloud
some clouds
some clouds
some clouds
clear
some clouds
some clouds
cloudy
rain shwrs
cloudy
cloudy
cloudy
heavy snow
some clouds
clear
clear
some clouds
some clouds
clear
some clouds
some clouds
light snow
some clouds
clear
clear
some clouds
some clouds
some clouds
mod rain
mod rain
heavy rain
light snow
light snow
light snow
cloudy
cloudy
some clouds
clear
cloudy
cloudy
cloudy
light rain
light snow
some clouds
clear
some clouds
cloudy
 km/h
20
SW
30
SW
25
WSW
30
W
20
WSW
10
SW
15
SW
20
SW
10
SW
15
SW
10
NW
20
N
20
WSW
25
WSW
25
W
20
W
15
WSW
20
W
15
WNW
15
WNW
5
SSE
20
WNW
15
NW
5
W
15
SSW
20
SW
20
SW
5
SSW
15
SSW
5
NNW
25
N
25
N
25
NW
25
NW
20
NNW
15
NW
5
NW
5
SW
10
SSW
20
S
20
S
10
WSW
15
NW
15
NW
20
NNW
15
N
 mm 
2
9
6
22
2
max°C
8
3
0
0
0
5
5
3
3
5
2
1
-1
-1
-3
-7
-6
-7
-7
-8
2
-1
0
-2
3
3
5
6
7
7
-1
-4
-11
-15
-14
-17
-12
-10
0
4
4
2
0
0
-6
-5
Moonrise
4:57
5:52
6:39
7:18
7:50
8:17
8:41
9:02
9:23
9:45
10:09
10:38
11:14
12:00
1:00
2:10
Moonset
1:27
2:20
3:21
4:27
5:35
6:44
7:53
9:02
10:11
11:23
12:38
1:55
3:12
4:25
5:27
Sunrise
7:07
7:05
7:05
7:05
7:05
7:03
7:03
7:03
7:01
7:01
7:01
7:00
6:58
6:58
6:56
6:56
Sunset
4:37
4:37
4:38
4:39
4:40
4:43
4:44
4:45
4:45
4:47
4:49
4:50
4:51
4:52
4:53
Today's sea temperature in Onset is
2.7° C
(Statistics for 15 Jan 1981-2005 – mean: 5.6 max: 7.7 min: 4.1°C)
Issued (local time): 12 am Thursday 15 Jan 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest