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 10:21 AM and sunset is at 05:51 PM.

Days 1–3 Weather Summary

Mostly dry. Low air temperatures (max 5°C on Thu night, min 1°C on Thu morning). Mainly fresh winds.

Days 4–6 Weather Summary

Mostly dry. Low air temperatures (max 7°C on Mon morning, min 3°C on Tue night). Winds decreasing (strong winds from the W on Sun night, calm by Tue night).

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 4°C on Wed night, min -4°C on Thu night). Winds increasing (calm on Wed night, strong winds from the NNE by Thu night).

Days 10–12 Weather Summary

Mostly dry. Freeze-thaw conditions (max 2°C on Sun night, min 0°C on Sat morning). Winds increasing (light winds from the NNW on Sun night, near gales from the N by Mon afternoon).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
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
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
3:36AM0.92m
Low Tide
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
7:23PM-0.02m
Wave
height (m) 
direction
period (s) 
1.1
N
7
1
N
6
1.1
NW
6
0.8
NW
6
0.9
NW
6
0.9
NNW
5
0.9
NNW
5
0.9
NNW
4
0.9
NW
4
0.9
NW
5
0.9
NW
5
1.1
NW
6
2.2
NW
9
2.2
NW
10
1.8
WNW
11
1.3
WNW
10
1.2
WNW
10
1
WNW
10
0.9
WNW
12
0.8
WNW
12
0.5
WNW
11
0.4
WNW
10
1.6
N
5
2.5
N
8
2.3
N
8
2.2
N
8
2
N
8
2
N
7
1.9
N
7
1.6
NNE
8
1.4
NNE
8
1.1
NNE
8
0.9
NNE
8
0.9
NNE
7
2.2
N
7
2.2
N
8
part cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
clear
cloud
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
some clouds
some clouds
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
some clouds
clear
clear
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
clear
clear
clear
cloudy
clear
clear
clear
clear
some clouds
cloudy
some clouds
clear
 km/h
25
NW
15
WNW
25
NW
25
NW
20
NW
30
NNW
30
NW
30
NW
25
NW
20
WNW
25
WNW
20
WSW
40
W
15
W
15
WNW
15
NNW
10
NNW
10
NNE
10
S
5
SSW
5
S
20
N
40
NNE
40
NNE
30
NNE
25
NNE
25
NNE
45
N
45
N
35
N
25
N
20
NNW
20
NNW
15
WNW
45
N
30
N
 mm 
max°C
1
4
5
3
2
1
2
2
3
5
5
5
7
7
6
5
4
4
3
3
4
3
1
-2
-3
-2
0
0
0
0
0
1
2
2
2
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 18 Dec 1981-2005 – mean: 4.9 max: 5.7 min: 4.1°C)
Issued (local time): 8 am Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest