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 — and sunset is at 04:52 PM.

Days 1–4 Weather Summary

Moderate rain (total 12mm), heaviest on Sat night. Low air temperatures (max 7°C on Thu night, min 4°C on Sun morning). Winds decreasing (strong winds from the WNW on Thu afternoon, light winds from the NNW by Sun morning).

Days 5–7 Weather Summary

Moderate rain (total 11mm), heaviest on Sun afternoon. Low air temperatures (max 8°C on Wed morning, min 3°C on Mon night). Winds decreasing (strong winds from the WNW on Mon afternoon, calm by Tue morning).

Days 8–10 Weather Summary

Heavy rain (total 24mm), heaviest during Sat morning. Mild temperatures (max 8°C on Wed afternoon, min 2°C on Fri night). Winds increasing (light winds from the W on Thu night, near gales from the SW by Fri afternoon).

Days 11–13 Weather Summary

Heavy rain (total 34mm), heaviest during Sat afternoon. Mild temperatures (max 7°C on Mon night, min 2°C on Sat afternoon). Winds decreasing (gales from the WNW on Sat night, calm by Mon afternoon).

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
1:07AM2.88m
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
Low Tide
6:22PM0.62m
6:03AM2.01m
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
Wave
height (m) 
direction
period (s) 
3.5
W
11
3.5
WNW
12
3.5
W
10
3.5
W
10
3.5
W
10
3
W
10
3
W
10
2.5
W
9
3
WSW
10
2.5
W
10
2.2
W
10
2.2
WNW
12
3
W
12
3.5
WNW
11
2.5
WNW
10
2.2
WNW
9
1.8
WNW
8
2.1
SW
8
2.5
WNW
12
3
WNW
9
3
SW
10
2.5
S
10
2.2
S
10
2
S
9
3.5
SW
7
4
W
10
4
W
11
4.5
W
12
5.5
SSW
11
5
SW
11
4.5
SW
11
4
WSW
11
3.5
WSW
10
3.5
WSW
10
2.5
WSW
10
2.2
SW
10
rain showers
rain showers
part cloud
light rain
light rain
cloud
light rain
rain showers
rain showers
rain showers
light rain
part cloud
light rain
rain showers
cloud
cloud
light rain
rain showers
rain showers
rain showers
cloud
cloud
cloud
cloud
rain showers
mod rain
mod rain
heavy rain
rain showers
rain showers
rain showers
rain showers
light rain
part cloud
clear
part cloud
rain shwrs
rain shwrs
some clouds
light rain
light rain
cloudy
light rain
rain shwrs
rain shwrs
rain shwrs
light rain
some clouds
light rain
rain shwrs
cloudy
cloudy
light rain
rain shwrs
rain shwrs
rain shwrs
cloudy
cloudy
cloudy
cloudy
rain shwrs
mod rain
mod rain
heavy rain
rain shwrs
rain shwrs
rain shwrs
rain shwrs
light rain
some clouds
clear
some clouds
 km/h
45
WNW
30
W
40
WNW
45
W
35
W
30
W
20
SSW
20
W
15
NNW
20
WSW
15
SW
25
NNW
35
NW
35
WSW
15
WSW
20
ENE
15
NNE
30
E
30
NE
40
NE
40
N
30
N
10
W
45
SSW
55
SW
50
WSW
25
S
25
NNW
55
WSW
40
WSW
30
SW
25
W
20
W
5
NNW
30
NNE
25
NNW
 mm 
1
1
1
3
1
3
2
2
2
2
3
1
1
1
1
6
6
10
20
7
3
2
1
1
max°C
6
7
6
6
6
6
6
5
5
5
5
5
5
4
5
5
7
8
8
8
5
5
6
7
7
5
4
2
5
5
6
6
6
6
7
6
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
3:21
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
4:52
4:53
4:53
4:54
4:54
4:55
4:57
4:58
4:59
Today's sea temperature in Union Seamount is
9.6° C
(Statistics for 18 Dec 1981-2005 – mean: 9.0 max: 10.8 min: 7.5°C)
Issued (local time): 3 pm Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest