Union Seamount Sea Conditions and Tide Table

Union Seamount 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 08:44 AM and sunset is at 04:52 PM.

Days 1–3 Weather Summary

Moderate rain (total 14mm), heaviest on Sat night. Low air temperatures (max 6°C on Fri morning, min 3°C on Sat night). Winds decreasing (strong winds from the W on Fri morning, calm by Sat night).

Days 4–6 Weather Summary

Moderate rain (total 18mm), heaviest on Mon night. Low air temperatures (max 5°C on Mon morning, min 2°C on Mon afternoon). Winds decreasing (near gales from the W on Mon night, calm by Tue afternoon).

Days 7–9 Weather Summary

Light rain (total 2mm), mostly falling on Thu night. Mild temperatures (max 8°C on Sat night, min 4°C on Thu afternoon). Winds decreasing (near gales from the NNE on Thu afternoon, light winds from the NNW by Fri night).

Days 10–12 Weather Summary

Heavy rain (total 33mm), heaviest during Sun night. Very mild (max 10°C on Sun afternoon, min 5°C on Sun night). Winds decreasing (severe gales from the SSE on Sun afternoon, moderate winds from the WSW by Mon afternoon).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
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
Wave Height Map
High Tide
11:49AM3.41m
1:40AM2.93m
12:25PM3.44m
2:14AM2.96m
1:02PM3.44m
2:48AM2.98m
1:41PM3.41m
3:23AM3.00m
2:22PM3.34m
3:59AM3.02m
3:06PM3.22m
4:37AM3.07m
3:55PM3.06m
5:18AM3.13m
4:53PM2.87m
6:01AM3.20m
6:04PM2.69m
6:48AM3.29m
7:30PM2.57m
7:38AM3.40m
9:01PM2.56m
8:31AM3.51m
10:23PM2.64m
Low Tide
6:56PM0.53m
6:39AM1.99m
7:30PM0.48m
7:16AM1.96m
8:05PM0.47m
7:53AM1.93m
8:40PM0.51m
8:34AM1.90m
9:16PM0.59m
9:21AM1.86m
9:54PM0.72m
10:14AM1.81m
10:33PM0.89m
11:16AM1.71m
11:16PM1.10m
12:25PM1.55m
00:04AM1.33m
1:36PM1.33m
00:59AM1.56m
2:44PM1.05m
2:02AM1.76m
3:48PM0.75m
3:08AM1.89m
Wave
height (m) 
direction
period (s) 
3
W
10
3.5
W
10
3.5
W
10
3
WNW
10
3
WNW
10
2.4
W
9
2.5
W
10
2.4
W
10
2.3
W
9
2.3
WNW
10
2.5
W
12
4.5
WNW
11
3.5
NW
10
2.5
NW
9
2.1
NW
8
2.2
WNW
10
1.9
WNW
10
2.2
WNW
12
3
NNE
7
3.5
NNE
7
3.5
NNE
8
4
SE
13
3.5
SE
13
3
SE
12
2.1
SE
10
1.8
SE
10
2.3
SE
10
3.5
NW
13
5
S
9
7.5
S
11
5.5
SSW
11
4.5
SSW
11
4
SSW
10
3.5
SW
10
4
SW
10
3.5
WSW
11
rain showers
light rain
light rain
part cloud
light rain
rain showers
part cloud
light rain
light rain
cloud
light rain
rain showers
light rain
rain showers
part cloud
cloud
light rain
cloud
cloud
cloud
light rain
cloud
part cloud
clear
part cloud
cloud
cloud
cloud
mod rain
heavy rain
cloud
part cloud
rain showers
rain showers
part cloud
cloud
rain shwrs
light rain
light rain
some clouds
light rain
rain shwrs
some clouds
light rain
light rain
cloudy
light rain
rain shwrs
light rain
rain shwrs
some clouds
cloudy
light rain
cloudy
cloudy
cloudy
light rain
cloudy
some clouds
clear
some clouds
cloudy
cloudy
cloudy
mod rain
heavy rain
cloudy
some clouds
rain shwrs
rain shwrs
some clouds
cloudy
 km/h
40
WNW
40
W
35
W
25
W
25
SW
10
WNW
30
WNW
25
WSW
30
SW
30
WNW
5
W
60
W
25
WNW
15
W
30
NNE
35
N
30
NNE
35
NNE
50
NNE
60
NNE
50
NNE
35
NNE
30
NNE
10
N
15
SW
25
SSW
35
SSW
55
S
70
S
80
S
30
SW
25
WSW
40
SW
35
WSW
50
W
40
WNW
 mm 
1
1
4
1
4
2
1
2
10
2
3
1
2
7
23
2
1
max°C
6
6
6
6
6
6
5
5
5
5
5
4
4
3
4
4
5
5
5
5
5
6
5
5
6
7
8
9
10
10
6
6
6
5
5
7
Moonrise
9:06
9:56
10:34
11:03
11:25
11:42
11:57
12:11
12:25
12:40
12:59
1:24
Moonset
4:07
5:06
6:14
7:28
8:43
9:59
11:15
12:32
1:51
3:14
4:42
Sunrise
8:44
8:44
8:45
8:45
8:45
8:45
8:45
8:47
8:47
8:47
8:47
8:47
Sunset
4:52
4:52
4:52
4:53
4:53
4:54
4:54
4:55
4:57
4:58
4:59
5:00
Today's sea temperature in Union Seamount is
9.6° C
(Statistics for 19 Dec 1981-2005 – mean: 8.9 max: 10.3 min: 7.5°C)
Issued (local time): 9 am Friday 19 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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