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 07:00 AM and sunset is at 07:30 PM.

Days 1–3 Weather Summary

Heavy rain (total 37mm), heaviest during Wed night. Warm air temperatures (max 22°C on Wed afternoon, min 6°C on Fri night). Wind will be generally light.

Days 4–6 Weather Summary

Moderate rain (total 17mm), heaviest on Mon night. Cool air temperatures (max 14°C on Mon afternoon, min 4°C on Sat night). Wind will be generally light.

Days 7–9 Weather Summary

Heavy rain (total 27mm), heaviest during Thu night. Very mild (max 11°C on Tue afternoon, min 4°C on Thu night). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 20mm), heaviest during Sun morning. Very mild (max 10°C on Sat afternoon, min 3°C on Fri night). Wind will be generally light.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
2:57PM2.75m
4:35AM3.44m
4:01PM2.94m
4:59AM3.50m
5:02PM3.13m
5:24AM3.55m
6:00PM3.29m
5:52AM3.58m
6:58PM3.39m
6:22AM3.57m
7:57PM3.40m
6:56AM3.51m
9:00PM3.36m
7:33AM3.39m
10:10PM3.27m
8:15AM3.20m
11:28PM3.21m
9:06AM2.96m
00:49AM3.20m
10:14AM2.70m
2:00AM3.25m
11:47AM2.50m
2:54AM3.31m
Low Tide
10:09AM1.62m
9:50PM0.13m
10:44AM1.20m
10:36PM0.25m
11:20AM0.74m
11:20PM0.45m
11:57AM0.27m
00:04AM0.74m
12:37PM-0.13m
00:48AM1.08m
1:20PM-0.43m
1:35AM1.43m
2:06PM-0.57m
2:24AM1.76m
2:56PM-0.55m
3:21AM2.04m
3:52PM-0.41m
4:32AM2.22m
4:55PM-0.20m
6:10AM2.26m
6:06PM0.02m
7:59AM2.08m
7:19PM0.20m
Wave
height (m) 
direction
period (s) 
part cloud
part cloud
heavy rain
rain showers
cloud
mod rain
light rain
rain showers
rain showers
light rain
part cloud
part cloud
cloud
cloud
light rain
rain showers
cloud
mod rain
part cloud
cloud
part cloud
light rain
light rain
light rain
light rain
light rain
rain showers
rain showers
thunderstorm
rain showers
part cloud
cloud
cloud
mod rain
rain showers
light rain
some clouds
some clouds
heavy rain
rain shwrs
cloudy
mod rain
light rain
rain shwrs
rain shwrs
light rain
some clouds
some clouds
cloudy
cloudy
light rain
rain shwrs
cloudy
mod rain
some clouds
cloudy
some clouds
light rain
light rain
light rain
light rain
light rain
rain shwrs
rain shwrs
risk tstorm
rain shwrs
some clouds
cloudy
cloudy
mod rain
rain shwrs
light rain
 km/h
0
S
10
NNW
5
SSE
5
SE
0
NNE
15
S
15
S
20
SSW
5
SSE
15
SSW
10
SW
5
NNE
10
NNE
5
SW
5
S
10
SSW
10
NNE
20
S
20
SSW
0
SSW
10
NNE
10
N
5
W
5
NE
5
S
0
NW
25
SSW
10
WSW
5
NNW
10
S
15
SSW
15
SW
5
ESE
10
SE
15
S
5
S
 mm 
19
3
7
2.0
2.0
4
4
3
2.0
8
1.0
5
5
4
3
9
1.0
3
1.0
9
4
2.0
max°C
14
22
13
12
15
11
10
11
8
7
11
9
9
13
10
10
14
10
9
11
9
6
7
7
7
7
7
7
9
6
7
10
8
5
10
7
Moonrise
6:00
6:20
6:37
6:55
7:14
7:37
8:07
8:46
9:38
10:43
11:56
1:11
Moonset
4:12
5:36
7:00
8:27
9:55
11:25
12:52
2:08
3:10
3:56
4:30
Sunrise
7:00
6:58
6:56
6:54
6:52
6:50
6:48
6:46
6:43
6:41
6:39
6:37
Sunset
7:30
7:30
7:31
7:34
7:35
7:37
7:37
7:39
7:40
7:42
7:44
7:45
Today's sea temperature in Duwamish Waterway is 8.7 °C (Statistics for 26 Mar 1981-2005 – mean: 8.7 max: 10.4 min: 7.6°C)
Issued (local time): 10 am Wednesday 26 Mar 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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