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. Icy conditions (max 5°C on Thu night, min 0°C on Thu morning). Mainly fresh winds.

Days 5–7 Weather Summary

Mostly dry. Low air temperatures (max 8°C on Mon afternoon, min 2°C on Tue afternoon). Winds decreasing (fresh winds from the W on Sun night, calm by Tue morning).

Days 8–10 Weather Summary

Moderate rain (total 10mm) heaviest on Thu morning, then becoming colder with a dusting of snow on Thu afternoon. Freeze-thaw conditions (max 6°C on Wed night, min 0°C on Thu night). Mainly fresh winds.

Days 11–13 Weather Summary

A dusting of new snow. Temperatures will be slightly above freezing (max 3°C on Sat afternoon, min 1°C on Fri night). Winds increasing (calm on Sun night, strong winds from the NNE by Mon night).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Mon
29
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
8:59AM1.26m
12:54PM1.25m
9:46AM1.30m
10:14AM1.32m
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
Low Tide
10:29PM-0.03m
10:42AM1.35m
11:05PM-0.03m
11:41PM-0.03m
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
Wave
height (m) 
direction
period (s) 
1.4
N
7
1.1
N
7
1
N
6
1.3
NW
6
0.9
NW
6
0.9
NNW
6
0.9
NNW
6
0.9
NNW
5
0.9
NNW
5
0.9
NW
5
0.9
NW
5
1.1
NW
6
1.3
WNW
7
2.2
WNW
10
2.2
WNW
11
1.9
WNW
11
1.5
WNW
11
1.3
WNW
10
1
WNW
10
1
WNW
10
0.8
W
6
0.6
SSW
4
0.2
WNW
11
2.2
N
6
3
NNW
10
2.2
N
10
1.8
N
9
1.2
N
8
0.8
NNE
8
0.6
NNE
7
0.5
NNW
9
0.5
NW
10
0.4
NW
9
0.4
NW
10
0.5
NW
8
0.6
NW
8
part cloud
part cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
clear
clear
cloud
cloud
cloud
cloud
cloud
light rain
mod rain
light snow
cloud
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light snow
some clouds
some clouds
cloudy
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
clear
clear
cloudy
cloudy
cloudy
cloudy
cloudy
light rain
mod rain
light snow
cloudy
clear
clear
clear
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
light snow
 km/h
35
NNW
25
NW
20
WNW
25
NW
20
NW
20
NW
25
NNW
25
NW
25
NW
25
W
25
W
25
W
20
SW
35
W
25
W
10
WNW
5
NNE
5
S
15
SSW
30
S
25
SSE
25
SSE
10
SSE
40
NNE
25
NE
20
ENE
25
E
30
E
25
ESE
20
ESE
15
ESE
10
E
10
ESE
5
SE
5
N
15
N
 mm 
3
7
max°C
1
1
4
5
3
2
1
2
3
5
5
4
6
7
8
6
4
3
2
3
5
6
6
2
1
0
0
2
2
3
3
3
3
3
3
1
Moonrise
10:00
11:01
11:48
12:21
12:44
1:00
1:13
1:23
1:32
1:41
1:52
2:06
Moonset
4:15
5:02
6:03
7:16
8:36
9:56
11:17
12:38
2:00
3:24
4:54
Sunrise
10:21
10:22
10:22
10:22
10:23
10:23
10:23
10:25
10:25
10:25
10:25
10:25
Sunset
5:51
5:52
5:52
5:52
5:52
5:53
5:53
5:54
5:55
5:57
5:58
5:59
Today's sea temperature in Chernofski Harbor, Unalaska Island is
5.8° C
(Statistics for 17 Dec 1981-2005 – mean: 4.9 max: 5.7 min: 4.1°C)
Issued (local time): 8 pm Wednesday 17 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest