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 07:39 PM.

Days 1–4 Weather Summary

Some drizzle, heaviest during Thu afternoon. Cool air temperatures (max 14°C on Sat afternoon, min 5°C on Fri morning). Wind will be generally light.

Days 5–7 Weather Summary

Mostly dry. Warm air temperatures (max 23°C on Mon afternoon, min 4°C on Tue night). Wind will be generally light.

Days 8–10 Weather Summary

Mostly dry. Very mild (max 19°C on Fri afternoon, min 6°C on Wed night). Wind will be generally light.

Days 11–13 Weather Summary

Mostly dry. Warm (max 21°C on Tue afternoon, min 7°C on Sat night). Wind will be generally light.

Thu
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
Thursday
16
Friday
17
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
6:43PM3.11m
6:06AM3.25m
7:28PM3.15m
6:28AM3.15m
8:13PM3.15m
6:53AM3.05m
9:01PM3.12m
7:20AM2.94m
9:55PM3.07m
7:50AM2.83m
10:58PM3.02m
8:25AM2.69m
00:09AM3.01m
9:11AM2.55m
1:15AM3.04m
10:22AM2.40m
2:08AM3.11m
11:53AM2.32m
2:46AM3.17m
1:20PM2.35m
3:15AM3.21m
2:35PM2.48m
3:38AM3.25m
3:39PM2.69m
4:00AM3.29m
4:36PM2.92m
4:23AM3.34m
Low Tide
12:22PM0.26m
00:27AM1.15m
12:53PM0.09m
1:05AM1.39m
1:26PM-0.02m
1:44AM1.62m
2:01PM-0.05m
2:26AM1.83m
2:40PM-0.03m
3:13AM2.02m
3:24PM0.05m
4:10AM2.17m
4:14PM0.16m
5:25AM2.25m
5:12PM0.27m
7:02AM2.19m
6:15PM0.36m
8:18AM2.00m
7:17PM0.44m
9:02AM1.73m
8:13PM0.51m
9:36AM1.40m
9:04PM0.62m
10:07AM1.00m
9:51PM0.76m
10:38AM0.57m
10:35PM0.95m
11:12AM0.13m
Wave
height (m) 
direction
period (s) 
rain showers
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
rain shwrs
some clouds
clear
some clouds
some clouds
clear
clear
some clouds
some clouds
cloudy
some clouds
some clouds
some clouds
some clouds
cloudy
clear
clear
clear
clear
clear
some clouds
cloudy
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
some clouds
clear
 km/h
10
SSW
10
S
10
SSW
5
W
5
N
10
N
15
N
10
NNE
10
N
15
N
5
N
5
SSW
10
SW
15
SSW
15
SW
10
NW
5
S
10
N
15
N
5
NNE
5
NNW
10
NNW
5
N
5
N
5
NNW
5
N
5
NNW
10
N
10
SSW
5
SW
10
NNW
0
E
10
N
15
N
5
NNE
5
N
10
N
5
S
5
SSW
5
WSW
5
SSW
5
SW
5
WNW
5
SW
5
NNW
10
N
0
SSW
 mm 
1
max°C
11
9
9
13
12
11
14
10
12
17
13
15
23
17
12
15
9
10
13
10
12
17
12
13
19
13
14
18
14
13
19
14
15
19
15
17
22
17
17
23
18
14
21
17
15
20
17
Moonrise
8:54
10:05
11:15
12:23
1:26
2:20
3:05
3:41
4:08
4:30
4:49
5:06
5:23
5:40
6:00
Moonset
6:59
7:19
7:44
8:16
8:57
9:48
10:49
11:57
1:09
2:23
3:37
4:54
6:13
7:35
9:01
Sunrise
6:43
6:41
6:39
6:37
6:35
6:33
6:31
6:30
6:28
6:26
6:24
6:22
6:20
6:18
6:16
Sunset
7:39
7:40
7:42
7:44
7:45
7:46
7:47
7:49
7:51
7:52
7:53
7:54
7:55
7:58
7:59
8:00
Today's sea temperature in Duwamish Waterway is
9.7° C
(Statistics for 02 Apr 1981-2005 – mean: 8.9 max: 10.2 min: 7.8°C)
Issued (local time): 4 pm Thursday 02 Apr 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest