Udamat Bay, Sedanka Island, Unalaska Island Sea Conditions and Tide Table

Udamat Bay, Sedanka Island, Unalaska Island 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 08:40 AM and sunset is at 09:37 PM.

Days 1–3 Weather Summary

A moderate fall of snow, heaviest on Tue night. Becoming mild with drizzle, on Tue night. Icy conditions (max 2°C on Tue night, min -2°C on Thu night). Winds decreasing (strong winds from the E on Tue night, light winds from the NNW by Thu night).

Days 4–6 Weather Summary

Mostly dry. Air temperatures will be below freezing (max -1°C on Fri afternoon, min -2°C on Fri morning). Wind will be generally light.

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 1°C on Tue afternoon, min -1°C on Mon morning). Winds increasing (light winds from the ESE on Mon night, fresh winds from the ENE by Wed night).

Days 10–12 Weather Summary

A dusting of snow giving way to moderate rain (total 15mm) heaviest on Thu night. Temperatures will be slightly above freezing (max 4°C on Sat morning, min 1°C on Thu morning). Mainly near gales.

Tuesday
31
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wed
15
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
PM
Wave Height Map
High Tide
2:57PM1.08m
3:00AM1.18m
4:29PM1.06m
3:23AM1.13m
6:00PM1.12m
3:44AM1.10m
7:19PM1.22m
8:22PM1.32m
9:13PM1.39m
9:58PM1.44m
10:39PM1.44m
11:18PM1.41m
7:40AM1.17m
11:53PM1.36m
8:29AM1.18m
00:21AM1.29m
9:19AM1.16m
00:40AM1.22m
10:15AM1.11m
00:51AM1.16m
11:18AM1.06m
00:57AM1.13m
12:31PM1.01m
Low Tide
8:44AM0.41m
8:36PM0.46m
9:39AM0.26m
9:32PM0.67m
10:28AM0.13m
10:40PM0.85m
11:15AM0.04m
00:02AM0.97m
12:00PM-0.03m
1:28AM1.05m
12:44PM-0.06m
2:38AM1.08m
1:29PM-0.08m
3:24AM1.10m
2:15PM-0.09m
3:55AM1.11m
2:59PM-0.09m
4:19AM1.10m
3:41PM-0.09m
4:42AM1.06m
4:19PM-0.06m
5:06AM0.99m
4:54PM-0.01m
5:32AM0.87m
5:26PM0.09m
6:04AM0.71m
5:56PM0.21m
6:42AM0.50m
Wave
height (m) 
direction
period (s) 
0.5
SSE
3
0.8
SSE
4
1.7
SE
5
1.1
ESE
3
1.3
SSE
5
1.1
W
5
0.8
NE
4
0.6
ENE
4
0.4
ESE
3
0.3
SSE
3
0.3
SE
4
0.4
SE
4
0.3
SSW
3
0.3
SSE
3
0.3
SSE
3
0.3
SE
3
0.3
SE
4
0.4
SE
4
0.6
SSE
4
0.7
SSE
4
0.7
SSE
4
0.9
SSE
4
1
SE
5
1.2
SE
5
1.5
ESE
6
1.6
ESE
6
1.7
ESE
6
1.6
E
6
1.5
E
6
1.4
ENE
5
2.3
E
7
1.9
E
7
2
ESE
7
1.4
ESE
6
1.6
ESE
6
2
SE
7
1.6
SE
6
1.3
SE
5
0.9
SE
3
0.8
SE
3
0.8
ESE
3
0.8
E
3
0.7
SE
3
0.8
ESE
5
1.3
SE
5
1.6
SE
5
1.3
SSE
5
cloud
light snow
mod snow
light snow
light snow
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
cloud
light snow
light rain
cloud
light rain
light rain
cloud
part cloud
light rain
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
snow showers
rain showers
part cloud
cloudy
light snow
mod snow
light snow
light snow
cloudy
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
clear
clear
clear
some clouds
cloudy
cloudy
cloudy
light snow
light rain
cloudy
light rain
light rain
cloudy
some clouds
light rain
cloudy
cloudy
some clouds
some clouds
some clouds
clear
some clouds
snow shwrs
rain shwrs
some clouds
 km/h
15
ESE
30
SE
45
E
20
ENE
30
NNE
35
N
30
NNW
20
NNW
10
NNW
15
NNW
15
N
15
NNW
10
NNW
0
NNW
5
SSE
10
ESE
10
ESE
15
ESE
15
ESE
20
SE
15
ESE
20
E
20
ENE
20
ENE
25
NE
30
ENE
35
ENE
35
ENE
35
ENE
30
NE
55
ENE
40
ENE
45
ENE
30
ENE
35
ESE
35
SE
35
ESE
20
ESE
10
ESE
0
N
0
NNE
5
E
10
SE
20
SE
40
SE
30
SSE
30
SSW
 mm 
1
8
3
2
1
1
8
1
max°C
1
1
2
1
1
1
-1
-1
-1
-2
-1
-1
-2
-1
-1
-1
-1
-1
-1
0
0
0
1
0
1
1
1
2
2
3
3
3
3
4
4
4
4
3
3
4
5
4
3
3
3
4
5
Moonrise
8:39
9:58
11:16
12:35
1:53
3:08
4:15
5:09
5:48
6:16
6:35
6:49
7:00
7:09
7:18
Moonset
8:10
8:18
8:26
8:36
8:50
9:08
9:33
10:11
11:04
12:10
1:27
2:47
4:10
5:33
6:57
8:25
Sunrise
8:40
8:37
8:34
8:33
8:30
8:27
8:26
8:22
8:21
8:18
8:15
8:14
8:11
8:08
8:07
8:03
Sunset
9:37
9:39
9:42
9:44
9:45
9:46
9:49
9:51
9:52
9:54
9:57
9:58
10:00
10:01
10:04
10:06
Today's sea temperature in Udamat Bay, Sedanka Island, Unalaska Island is
2.8° C
(Statistics for 31 Mar 1981-2005 – mean: 4.0 max: 5.0 min: 2.8°C)
Issued (local time): 9 am Tuesday 31 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest