Portage Bay, Kupreanof Island Sea Conditions and Tide Table

Portage Bay, Kupreanof 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 07:30 PM.

Days 1–4 Weather Summary

A dusting of snow turning to light rain (total 2mm) on Fri morning. Icy conditions (max 5°C on Thu afternoon, min -5°C on Tue night). Wind will be generally light.

Days 5–7 Weather Summary

Heavy rain (total 44mm), heaviest during Mon morning. Low air temperatures (max 5°C on Sun morning, min 2°C on Fri night). Wind will be generally light.

Days 8–10 Weather Summary

Light rain (total 3mm), mostly falling on Thu morning. Freeze-thaw conditions (max 4°C on Tue morning, min -1°C on Mon night). Wind will be generally light.

Days 11–13 Weather Summary

A dusting of snow giving way to moderate rain (total 18mm) heaviest on Sun morning. Freeze-thaw conditions (max 7°C on Sat afternoon, min 0°C on Fri night). Wind will be generally light.

Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thu
16
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
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
Wave Height Map
High Tide
1:11AM5.14m
1:32PM4.91m
1:41AM5.24m
2:08PM4.85m
2:09AM5.22m
2:43PM4.70m
2:37AM5.11m
3:17PM4.47m
3:04AM4.93m
3:51PM4.16m
3:33AM4.69m
4:29PM3.82m
4:05AM4.40m
5:12PM3.46m
4:42AM4.09m
6:10PM3.15m
5:32AM3.78m
7:30PM2.99m
9:01PM3.09m
8:15AM3.46m
10:06PM3.41m
9:37AM3.64m
10:49PM3.83m
10:40AM3.95m
11:25PM4.27m
11:31AM4.30m
11:58PM4.72m
12:16PM4.62m
Low Tide
7:21AM-0.29m
7:30PM-0.16m
7:55AM-0.48m
8:02PM0.02m
8:28AM-0.54m
8:33PM0.26m
9:00AM-0.48m
9:04PM0.56m
9:34AM-0.30m
9:35PM0.90m
10:09AM-0.02m
10:08PM1.25m
10:49AM0.31m
10:45PM1.61m
11:38AM0.66m
11:33PM1.94m
12:42PM0.94m
00:48AM2.17m
2:04PM1.04m
2:29AM2.14m
3:21PM0.93m
3:50AM1.78m
4:19PM0.69m
4:46AM1.25m
5:04PM0.43m
5:31AM0.64m
5:44PM0.21m
6:11AM0.02m
Wave
height (m) 
direction
period (s) 
part cloud
clear
clear
clear
cloud
cloud
light snow
light rain
cloud
light rain
light rain
light rain
cloud
cloud
light rain
heavy rain
heavy rain
light rain
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
light rain
light rain
light snow
light rain
part cloud
part cloud
part cloud
cloud
light rain
mod rain
mod rain
mod rain
cloud
cloud
cloud
part cloud
cloud
light rain
light rain
light rain
light rain
part cloud
some clouds
clear
clear
clear
cloudy
cloudy
light snow
light rain
cloudy
light rain
light rain
light rain
cloudy
cloudy
light rain
heavy rain
heavy rain
light rain
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
light rain
light rain
light snow
light rain
some clouds
some clouds
some clouds
cloudy
light rain
mod rain
mod rain
mod rain
cloudy
cloudy
cloudy
some clouds
cloudy
light rain
light rain
light rain
light rain
some clouds
 km/h
5
E
5
NNW
10
NW
5
ESE
5
ESE
5
E
10
E
10
SE
10
ESE
10
ESE
10
ESE
10
ESE
0
NE
0
ENE
10
E
10
ESE
5
S
10
SSE
10
SE
0
NW
5
NW
5
ENE
0
NNE
5
NNW
5
ESE
10
ESE
10
ESE
10
ESE
5
WSW
5
NW
0
NW
0
SE
5
E
5
ESE
10
SE
10
ESE
5
SE
10
ESE
5
ESE
5
ESE
5
SE
5
ESE
5
ESE
5
SE
5
ESE
5
WSW
0
NW
 mm 
2
1
3
2
3
17
13
5
2
1
1
2
1
7
6
9
3
3
5
1
max°C
-2
3
3
-2
4
5
2
3
3
2
3
4
3
5
4
3
3
2
1
4
4
2
3
3
2
3
4
3
3
3
0
5
7
5
3
3
3
4
5
5
8
10
7
7
7
7
8
Moonrise
7:45
9:08
10:32
11:57
1:19
2:33
3:29
4:06
4:27
4:41
4:49
4:55
5:00
5:05
5:10
Moonset
6:02
6:06
6:12
6:19
6:30
6:49
7:21
8:11
9:21
10:43
12:10
1:38
3:07
4:36
6:09
Sunrise
6:22
6:20
6:16
6:15
6:11
6:09
6:07
6:03
6:01
5:58
5:56
5:52
5:50
5:48
5:45
5:43
Sunset
7:30
7:31
7:34
7:36
7:37
7:39
7:42
7:45
7:46
7:49
7:51
7:52
7:54
7:57
8:00
8:01
Today's sea temperature in Portage Bay, Kupreanof Island is
4.1° C
(Statistics for 31 Mar 1981-2005 – mean: 6.2 max: 7.4 min: 5.2°C)
Issued (local time): 9 pm Tuesday 31 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest