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 06:14 PM.

Days 1–4 Weather Summary

Light rain (total 4mm), mostly falling on Wed night. Icy conditions (max 3°C on Wed night, min 0°C on Fri morning). Winds decreasing (near gales from the N on Thu morning, moderate winds from the E by Fri afternoon).

Days 5–7 Weather Summary

Moderate rain (total 15mm), heaviest on Tue morning. Low air temperatures (max 5°C on Tue afternoon, min 2°C on Sat night). Winds increasing (light winds from the S on Sat night, near gales from the ESE by Mon night).

Days 8–10 Weather Summary

A dusting of snow. Milder later with heavy rain (total 23mm) on Fri afternoon. Freeze-thaw conditions (max 7°C on Fri afternoon, min 0°C on Thu night). Winds increasing (moderate winds from the SSE on Tue night, gales from the SE by Fri afternoon).

Days 11–13 Weather Summary

A dusting of snow. Milder later with heavy rain (total 24mm) on Sun night. Mild temperatures (max 6°C on Sun night, min 1°C on Sat night). Winds increasing (calm on Sat night, severe gales from the SSW by Mon afternoon).

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Mon
5
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
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
3:07PM1.59m
10:04AM1.31m
4:15PM1.48m
9:44AM1.30m
Low Tide
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
00:24AM-0.33m
11:15AM1.31m
1:11AM-0.25m
1:24PM1.19m
Wave
height (m) 
direction
period (s) 
3
NNE
8
4
NNE
9
4
NNE
10
4
NE
11
4.5
NE
13
4
NE
13
3.5
ENE
12
3
ENE
12
2.5
ENE
12
2.2
NE
12
2
NE
11
2
ENE
11
2.1
ENE
12
2.2
ENE
9
2.4
E
8
3
E
8
3.5
E
10
3
E
10
2.2
E
10
1.5
E
9
1.6
E
9
2.3
WNW
13
3
WNW
13
2.5
WNW
12
1.7
WNW
11
2.1
SE
6
1.9
ESE
8
1.9
WNW
10
2.1
WNW
12
2.2
WNW
12
2.1
WNW
11
1.7
WNW
10
2.2
NNW
8
2.5
ESE
7
1.7
SSE
5
2.2
S
5
light rain
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
mod rain
light rain
light rain
rain showers
part cloud
clear
part cloud
clear
snow showers
light rain
rain showers
part cloud
part cloud
clear
part cloud
part cloud
light snow
heavy rain
rain showers
part cloud
light rain
cloudy
cloudy
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
light rain
mod rain
light rain
light rain
rain shwrs
some clouds
clear
some clouds
clear
snow shwrs
light rain
rain shwrs
some clouds
some clouds
clear
some clouds
some clouds
light snow
heavy rain
rain shwrs
some clouds
 km/h
45
N
50
N
50
N
35
NE
35
ENE
30
E
40
SE
40
SSE
30
S
20
S
25
SSE
35
SSE
40
SE
45
SE
45
SE
55
ESE
45
SE
40
SE
40
SSW
50
SW
55
SW
60
SW
65
WSW
40
WSW
40
SSE
65
SSE
55
WSW
55
SW
45
SW
40
WSW
20
WSW
30
ESE
45
ESE
55
SSE
60
SSW
75
SSW
 mm 
4
1
10
4
4
1
6
1
11
23
1
max°C
3
2
2
2
0
0
1
1
3
3
3
3
2
3
3
3
3
5
4
4
2
1
1
2
3
5
7
3
2
2
2
1
2
6
5
4
Moonrise
1:40
1:49
1:59
2:11
2:26
2:47
3:19
4:10
5:22
6:52
8:24
Moonset
11:40
1:00
2:21
3:45
5:14
6:47
8:22
9:48
10:55
11:40
12:08
12:27
Sunrise
10:38
10:38
10:40
10:40
10:40
10:40
10:40
10:38
10:38
10:38
10:38
10:37
Sunset
6:14
6:15
6:15
6:15
6:16
6:17
6:19
6:20
6:22
6:22
6:23
6:24
6:25
Today's sea temperature in Chichagof Harbor, Attu Island is
4.9° C
(Statistics for 24 Dec 1981-2005 – mean: 4.0 max: 4.7 min: 3.2°C)
Issued (local time): 7 pm Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest