Duwamish Waterway Sea Conditions and Tide Table

Duwamish Waterway 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

Light rain (total 7mm), mostly falling on Thu morning. Low air temperatures (max 7°C on Fri morning, min 3°C on Thu night). Wind will be generally light.

Days 5–7 Weather Summary

Mostly dry. Low air temperatures (max 6°C on Tue afternoon, min 3°C on Sat night). Wind will be generally light.

Days 8–10 Weather Summary

Some drizzle, heaviest during Fri afternoon. Very mild (max 10°C on Wed afternoon, min 5°C on Tue night). Wind will be generally light.

Days 11–13 Weather Summary

Heavy rain (total 38mm), heaviest during Sat afternoon. Mild temperatures (max 9°C on Fri night, min 6°C on Sun night). Winds decreasing (fresh winds from the S on Sat morning, calm by Sun 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
9:02AM3.73m
7:49PM2.46m
9:33AM3.71m
9:11PM2.33m
10:06AM3.67m
10:45PM2.33m
10:40AM3.63m
00:26AM2.50m
11:16AM3.59m
2:00AM2.81m
11:57AM3.57m
3:15AM3.17m
12:42PM3.55m
4:15AM3.49m
1:29PM3.49m
5:04AM3.72m
2:24PM3.46m
5:48AM3.86m
3:19PM3.41m
6:29AM3.93m
4:16PM3.30m
7:08AM3.94m
5:14PM3.14m
Low Tide
1:49AM0.05m
3:26PM1.71m
2:31AM0.40m
4:19PM1.37m
3:18AM0.83m
5:12PM0.96m
4:12AM1.30m
6:04PM0.52m
5:17AM1.76m
6:55PM0.07m
6:31AM2.14m
7:46PM-0.34m
7:48AM2.39m
8:34PM-0.65m
9:00AM2.52m
9:23PM-0.88m
10:03AM2.50m
10:12PM-0.99m
10:59AM2.40m
10:59PM-0.96m
11:52AM2.24m
11:45PM-0.81m
12:44PM2.03m
Wave
height (m) 
direction
period (s) 
part cloud
light rain
light rain
rain showers
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
light rain
heavy rain
mod rain
heavy rain
cloud
light rain
part cloud
part cloud
cloud
cloud
some clouds
light rain
light rain
rain shwrs
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
some clouds
cloudy
cloudy
light rain
heavy rain
mod rain
heavy rain
cloudy
light rain
some clouds
some clouds
cloudy
cloudy
 km/h
10
NNE
10
NNE
5
SE
5
S
10
S
15
SSW
5
SSE
0
ENE
5
S
0
S
0
SE
0
NE
5
N
5
NNE
5
N
5
NE
5
NNW
5
NNE
5
SE
5
SSE
5
S
5
SSE
10
SSE
5
S
5
S
5
SE
5
NE
10
E
25
S
30
S
20
SSW
10
SSW
5
SSW
5
S
5
NE
5
NNW
 mm 
2
3
2
1
12
10
15
1
max°C
5
6
6
6
7
5
4
5
5
4
4
5
4
4
4
3
5
6
6
9
10
9
10
10
8
10
10
9
9
8
8
8
8
7
7
7
Moonrise
11:12
11:28
11:44
12:01
12:23
12:50
1:27
2:19
3:28
4:49
6:14
7:37
Moonset
9:19
10:33
11:47
1:04
2:24
3:49
5:16
6:38
7:49
8:42
9:20
9:48
Sunrise
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
7:56
Sunset
4:22
4:22
4:23
4:24
4:25
4:25
4:27
4:29
4:30
4:30
4:31
4:32
Today's sea temperature in Duwamish Waterway is
9.9° C
(Statistics for 24 Dec 1981-2005 – mean: 8.4 max: 9.7 min: 7.2°C)
Issued (local time): 9 pm Wednesday 24 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest