Chichagof Harbor, Attu Island Sea Conditions and Tide Table

Chichagof Harbor, Attu 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 06:13 PM.

Days 1–4 Weather Summary

Light rain (total 5mm), mostly falling on Wed afternoon. Low air temperatures (max 6°C on Mon afternoon, min 3°C on Tue night). Winds increasing (light winds from the SSE on Tue afternoon, strong winds from the NNE by Thu morning).

Days 5–7 Weather Summary

Mostly dry. Icy conditions (max 3°C on Thu afternoon, min 0°C on Fri afternoon). Winds decreasing (strong winds from the NE on Thu night, light winds from the SW by Sun morning).

Days 8–10 Weather Summary

Light rain (total 4mm), mostly falling on Tue morning. Temperatures will be slightly above freezing (max 4°C on Mon night, min 1°C on Sun afternoon). Winds increasing (calm on Sun afternoon, near gales from the SSE by Tue morning).

Days 11–13 Weather Summary

Light rain (total 9mm), mostly falling on Sat morning. Mild temperatures (max 6°C on Fri night, min 2°C on Wed afternoon). Mainly near gales.

Mon
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Sat
3
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
11:22AM1.38m
11:28AM1.36m
11:28AM1.32m
11:24AM1.29m
7:21PM0.98m
11:20AM1.28m
9:30PM0.86m
11:19AM1.31m
11:43PM0.78m
11:24AM1.37m
2:48AM0.81m
11:37AM1.47m
11:59AM1.56m
12:32PM1.64m
1:13PM1.67m
2:05PM1.65m
Low Tide
2:09AM-0.06m
2:39AM0.01m
3:08AM0.12m
5:47PM0.98m
6:05PM0.78m
6:39PM0.56m
7:20PM0.32m
8:06PM0.09m
8:56PM-0.10m
9:46PM-0.24m
10:39PM-0.33m
11:32PM-0.36m
Wave
height (m) 
direction
period (s) 
1.3
W
8
1.1
WNW
13
0.8
WNW
12
0.7
WNW
9
0.8
WNW
6
2
N
7
2.2
NNE
7
2.2
NNE
8
2.5
NNE
8
3
NNE
8
3.5
NE
10
4
ENE
11
4
ENE
12
3.5
ENE
12
3
ENE
12
3
ENE
12
2.3
ENE
12
1.7
ENE
12
1.4
ENE
11
1.1
ENE
9
1.3
SE
5
1.7
ESE
6
2.1
SE
6
1.7
ESE
7
0.9
ESE
7
0.9
WNW
10
1
W
7
0.9
W
7
0.8
WSW
5
0.8
WSW
5
1
S
4
1.1
SE
5
1.3
SE
5
1.5
SE
5
2.3
ESE
7
1.1
ESE
8
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
clear
clear
part cloud
part cloud
cloud
clear
part cloud
cloud
cloud
cloud
light rain
mod rain
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
light rain
light rain
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
light rain
clear
clear
some clouds
some clouds
cloudy
clear
some clouds
cloudy
cloudy
cloudy
light rain
mod rain
 km/h
40
S
30
S
15
SSE
5
SSE
25
NE
40
NE
35
NNE
30
NNE
45
NNE
45
NNE
40
ENE
35
E
35
E
30
SE
30
SSE
15
SSW
5
SW
5
SW
5
SW
20
S
40
SSE
50
SSE
55
SSE
25
SW
30
WSW
15
SSW
35
SSW
30
S
30
S
30
SSW
35
S
35
S
40
SSE
45
SSE
60
SSE
20
W
 mm 
1
4
4
2
7
max°C
6
5
5
5
5
3
3
3
3
3
2
1
1
0
0
1
1
1
1
1
2
2
4
4
4
2
1
4
5
5
5
3
3
2
6
6
Moonrise
1:16
1:29
1:40
1:49
1:59
2:11
2:26
2:47
3:19
4:10
5:22
Moonset
8:59
10:20
11:40
1:00
2:21
3:45
5:14
6:47
8:22
9:48
10:55
11:40
Sunrise
10:37
10:38
10:38
10:38
10:40
10:40
10:40
10:40
10:40
10:38
10:38
10:38
Sunset
6:13
6:13
6:14
6:15
6:15
6:15
6:16
6:17
6:19
6:20
6:22
6:22
Today's sea temperature in Chichagof Harbor, Attu Island is
4.9° C
(Statistics for 22 Dec 1981-2005 – mean: 4.0 max: 4.7 min: 3.4°C)
Issued (local time): 1 pm Monday 22 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest