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 05:29 PM.

Days 1–4 Weather Summary

Moderate rain (total 14mm), heaviest on Fri afternoon. Low air temperatures (max 8°C on Sat morning, min 2°C on Sun night). Wind will be generally light.

Days 5–7 Weather Summary

Mostly dry. Icy conditions (max 8°C on Wed afternoon, min 0°C on Tue night). Wind will be generally light.

Days 8–10 Weather Summary

Light rain (total 3mm) at first, then becoming colder with a dusting of snow on Thu afternoon. Freeze-thaw conditions (max 10°C on Sun morning, min 0°C on Thu night). Wind will be generally light.

Days 11–13 Weather Summary

Moderate rain (total 16mm), heaviest on Mon afternoon. Very mild (max 10°C on Sun afternoon, min 3°C on Tue night). Wind will be generally light.

Fri
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
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
PM
night
Wave Height Map
High Tide
4:30AM3.38m
1:48PM2.85m
4:56AM3.46m
2:41PM2.91m
5:17AM3.52m
3:30PM2.97m
5:35AM3.57m
4:19PM3.02m
5:53AM3.61m
5:08PM3.04m
6:14AM3.64m
6:01PM3.04m
6:37AM3.65m
6:57PM3.00m
7:04AM3.63m
8:00PM2.93m
7:34AM3.57m
9:12PM2.86m
8:08AM3.48m
10:40PM2.83m
8:49AM3.36m
00:23AM2.92m
9:42AM3.21m
1:53AM3.12m
10:51AM3.07m
2:54AM3.32m
12:13PM2.98m
Low Tide
8:46PM-0.03m
9:50AM2.26m
9:26PM-0.12m
10:22AM2.10m
10:03PM-0.17m
10:52AM1.88m
10:37PM-0.15m
11:23AM1.61m
11:11PM-0.04m
11:56AM1.29m
11:46PM0.16m
12:32PM0.96m
00:22AM0.45m
1:11PM0.63m
1:01AM0.82m
1:54PM0.34m
1:43AM1.24m
2:42PM0.12m
2:30AM1.68m
3:36PM-0.02m
3:27AM2.08m
4:39PM-0.11m
4:45AM2.38m
5:49PM-0.17m
6:28AM2.49m
7:00PM-0.24m
8:05AM2.37m
Wave
height (m) 
direction
period (s) 
mod rain
rain showers
cloud
cloud
part cloud
cloud
rain showers
rain showers
light rain
part cloud
part cloud
part cloud
cloud
clear
clear
part cloud
cloud
cloud
light snow
snow showers
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
part cloud
part cloud
part cloud
cloud
light rain
cloud
cloud
cloud
clear
part cloud
cloud
light rain
light rain
light rain
light rain
mod rain
rain shwrs
cloudy
cloudy
some clouds
cloudy
rain shwrs
rain shwrs
light rain
some clouds
some clouds
some clouds
cloudy
clear
clear
some clouds
cloudy
cloudy
light snow
snow shwrs
some clouds
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
light rain
light rain
light rain
light rain
some clouds
some clouds
some clouds
cloudy
light rain
cloudy
cloudy
cloudy
clear
some clouds
cloudy
light rain
light rain
light rain
light rain
 km/h
10
S
10
SW
10
SSW
10
N
10
N
10
NNE
5
ENE
5
WNW
5
S
10
ESE
5
S
10
S
5
SSW
5
SSE
5
S
0
S
5
S
15
SSW
15
N
0
NNE
0
ESE
5
SSE
5
SE
10
SSE
10
S
15
S
20
SSW
20
SSW
5
SW
25
SSW
20
SW
15
SW
5
SSE
5
ESE
5
SSE
10
SSE
15
SSW
10
SSW
5
S
0
SSE
5
NNE
5
NNE
5
NNW
0
SSE
10
S
15
S
5
WSW
 mm 
7
2
1
1
3
3
5
1
5
4
1
1
2
2
3
max°C
7
5
8
8
5
5
5
3
4
5
4
6
7
2
7
8
3
6
2
1
4
5
4
7
7
8
10
10
9
10
9
6
8
9
4
7
7
5
8
9
5
7
8
6
9
9
9
Moonrise
6:13
6:42
7:05
7:25
7:42
7:57
8:14
8:32
8:55
9:23
10:02
10:55
12:03
1:21
2:43
Moonset
2:23
3:37
4:53
6:08
7:24
8:41
10:00
11:21
12:44
2:06
3:22
4:24
5:12
5:47
Sunrise
7:16
7:13
7:11
7:11
7:09
7:07
7:05
7:03
7:01
7:00
6:58
6:56
6:54
6:52
6:50
Sunset
5:29
5:30
5:32
5:34
5:36
5:37
5:38
5:39
5:42
5:43
5:45
5:45
5:47
5:49
5:51
5:52
Today's sea temperature in Duwamish Waterway is
9.3° C
(Statistics for 13 Feb 1981-2005 – mean: 8.2 max: 9.5 min: 6.5°C)
Issued (local time): 3 pm Friday 13 Feb 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest