Chernofski Harbor, Unalaska Island Sea Conditions and Tide Table

Chernofski Harbor, 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 — and sunset is at —.

Days 1–4 Weather Summary

Mostly dry. Low air temperatures (max 6°C on Mon afternoon, min 1°C on Sat night). Winds decreasing (fresh winds from the NW on Sat night, light winds from the NNE by Tue afternoon).

Days 5–7 Weather Summary

Moderate rain (total 11mm) heaviest on Thu night, then becoming colder with a dusting of snow on Thu night. Icy conditions (max 5°C on Thu morning, min -4°C on Fri afternoon). Winds increasing (calm on Tue night, fresh winds from the NNE by Thu night).

Days 8–10 Weather Summary

Mostly dry. Freeze-thaw conditions (max 2°C on Sun morning, min -4°C on Fri night). Winds increasing (moderate winds from the NNE on Fri night, near gales from the NNW by Sun afternoon).

Days 11–13 Weather Summary

Mostly dry. Freeze-thaw conditions (max 3°C on Tue afternoon, min -3°C on Thu afternoon). Winds increasing (light winds from the W on Tue afternoon, near gales from the NNW by Thu morning).

Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thu
1
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
10:34AM1.33m
10:47AM1.32m
10:58AM1.29m
11:05AM1.26m
11:10AM1.23m
8:03PM0.85m
11:13AM1.23m
10:05PM0.77m
11:18AM1.25m
11:59PM0.76m
11:29AM1.31m
1:48AM0.82m
11:48AM1.40m
3:36AM0.92m
12:16PM1.49m
12:53PM1.57m
1:36PM1.60m
Low Tide
00:19AM-0.03m
00:57AM-0.02m
1:34AM-0.00m
2:09AM0.05m
2:41AM0.13m
5:21PM0.89m
3:13AM0.26m
5:37PM0.68m
3:42AM0.42m
6:06PM0.44m
6:42PM0.20m
7:23PM-0.02m
8:10PM-0.20m
8:57PM-0.31m
Wave
height (m) 
direction
period (s) 
0.8
NNW
4
0.8
NW
4
0.9
NW
5
1.3
WNW
6
1.6
NW
8
1.9
NW
10
2.1
NW
12
1.5
WNW
11
1.2
WNW
10
0.9
WNW
10
0.8
WNW
10
0.7
NW
9
0.6
WNW
8
0.4
NW
8
0.4
NW
9
1.5
NNE
6
3
N
9
3
N
9
2.4
N
9
2.5
N
8
2.4
N
8
2.2
N
7
2.5
N
8
3
N
8
2.5
N
8
2.2
NNW
8
1.6
N
8
1.1
N
7
0.9
NNW
7
0.8
NNW
6
0.8
NW
6
0.9
NW
6
0.8
NNW
6
1.3
NNW
5
3.5
NNW
8
3.5
NNW
9
cloud
cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light snow
part cloud
clear
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloudy
cloudy
cloudy
some clouds
clear
clear
clear
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
light rain
light snow
some clouds
clear
some clouds
cloudy
cloudy
some clouds
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
cloudy
 km/h
25
NW
20
WNW
25
WNW
30
W
20
W
20
WNW
10
NW
10
NNW
10
N
10
SE
15
SSE
20
SE
25
ESE
25
E
30
ENE
35
NE
35
NNE
30
NNE
25
NNE
45
NNE
45
NNE
45
NNW
50
NNW
50
NNW
50
NNW
45
NNW
35
NNW
25
NNW
15
NW
10
W
15
WNW
25
N
20
NNW
35
NW
60
NNW
55
N
 mm 
4
7
max°C
2
4
4
4
5
6
5
3
2
3
3
4
4
5
4
3
-1
-3
-2
-1
0
1
2
2
2
2
2
2
1
3
3
2
2
2
1
-1
Moonrise
12:21
12:44
1:00
1:13
1:23
1:32
1:41
1:52
2:06
2:26
2:56
3:45
Moonset
7:16
8:36
9:56
11:17
12:38
2:00
3:24
4:54
6:28
8:03
9:31
Sunrise
10:22
10:23
10:23
10:23
10:25
10:25
10:25
10:25
10:25
10:25
10:25
10:25
Sunset
5:52
5:52
5:53
5:53
5:54
5:55
5:57
5:58
5:59
6:00
6:00
6:01
Today's sea temperature in Chernofski Harbor, Unalaska Island is
5.6° C
(Statistics for 20 Dec 1981-2005 – mean: 4.9 max: 5.6 min: 4.1°C)
Issued (local time): 8 pm Saturday 20 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest