Duwamish Waterway tide times

Duwamish River (8th Ave. South), WADuwamish River (8th Ave. South)NOAA 9447029Tuesday, October 20 · PDTTue Oct 20Predictions onlyChange station
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Today at Duwamish Waterway the next low tide is at 9:11 PM (5.2 ft). Tomorrow's first low is at 7:48 AM.

Estimated now
9.3 ft ↓
Falling 0.9 ft per hour
Next low
9:11 PM
In 4 h 45 min · 5.2 ft
Next high
1:42 AM
In 9 h 16 min · 7.5 ft
Tide range today
8.3 ft
Mean range 7.2 ft
Predictions only. No live gauge at this station.

Today's tide

Estimated curve between high and low timesNightHeight above MLLW
0 ft2 ft4 ft6 ft8 ft10 ftNOW 4:2512:23 AMHigh · 7.2 ft6:49 AMLow · 1.9 ft2:31 PMHigh · 10.3 ft9:11 PMLow · 5.2 ft
Tide chart for Duwamish Waterway, today. High 7.2 ft at 12:23 AM, low 1.9 ft at 6:49 AM, high 10.3 ft at 2:31 PM, low 5.2 ft at 9:11 PM.

Heights and times are estimated from Seattle, Puget Sound using NOAA offsets. Only the high and low points are official; the curve between them is drawn by us.

Today's tides

ft above MLLW
  • High12:23 AM7.2 ft
  • Low6:49 AM1.9 ft
  • High2:31 PM10.3 ft
  • Low9:11 PM5.2 ft
Tide times for Duwamish Waterway
TideTimeHeight
High12:23 AM7.2 ft
Low6:49 AM1.9 ft
High2:31 PM10.3 ft
Low9:11 PM5.2 ft
Sunrise
7:36 AM
First light 7:05
Sunset
6:14 PM
Last light 6:45
Moon
70%
Waxing gibbous
Tide range
8.3 ft
Mean 7.2 ft

Best windows today

Plan the week →
  • Fishing
    5:00 to 8:00 PM

    Today's best window (7:00 to 8:00 AM) has passed. Dawn light with the incoming tide around the 2:31 PM high.

  • Tidepools & shelling
    7:00 to 8:00 AM
    Earlier today: 7:00 to 8:00 AM

    Today's best window (7:00 to 8:00 AM) has passed.

  • Surfing
    Next: Wed 10:00 AM to 12:00 PM
    Earlier today: 10:00 AM to 12:00 PM

    Today's best window (10:00 AM to 12:00 PM) has passed.

  • Shallow boat launch
    Enough water all day

    Lowest is 1.9 ft at 6:49 AM.

Plan the week

Moving water around the turn often fishes best. Local species and bait matter more than any chart.

Next 7 days

October calendar →
High and low tides for the next 7 days, heights in ft
DayTide 1Tide 2Tide 3Tide 4Range, ft
TodayTue 20H12:23a7.2L6:49a1.9H2:31p10.3L9:11p5.28.3
WedOct 21H1:42a7.5L7:48a2.2H2:59p10.5L9:33p4.28.2
ThuOct 22H2:47a8.1L8:41a2.6H3:23p10.7L9:55p3.08.1
FriOct 23H3:43a8.8L9:29a3.1H3:45p10.9L10:21p1.79.2
SatOct 24H4:33a9.6L10:13a3.7H4:08p11.0L10:50p0.310.8
SunOct 25H5:22a10.3L10:56a4.5H4:34p11.2L11:24p−1.012.2
MonOct 26H6:11a10.9L11:40a5.3H5:02p11.25.9

Neap tides Monday. Smaller range, so highs and lows stay close to average. Spring and neap tides

Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 9447029.

Nearby stations

Currents

Harbor Island West

  • Max ebb5:15 AM 0.4 kn
  • Slack9:27 AM
  • Slack11:47 AM
  • Max ebb1:57 PM 0.1 kn
  • Slack3:47 PM
  • Max ebb5:18 PM 0.1 kn
  • Slack7:47 PM
  • Slack11:18 PM

Current predictions for Harbor Island West, 4 mi away. Currents near inlets can be strong. Not for navigation.

Station details

Datum
Mean lower low water
Predictions
NOAA subordinate, from Seattle, Puget Sound
Live gauge
None
Coordinates
47.535° N, 122.322° W
Time zone
Pacific, UTC−7
Station ID
NOAA 9447029

About the tides at Duwamish Waterway

Duwamish Waterway has a mixed tide. The two daily highs, and especially the two lows, can differ a lot in height. The pattern follows the reference station at Seattle, Puget Sound. With a mean range of about 7.2 ft, the shoreline here changes a lot between high and low water. Over the next two weeks the biggest daily range, 14.5 ft, comes on October 29, and the smallest, 5.9 ft, on Monday. Looking a year ahead, predictions peak at 12.7 ft on January 25 and bottom out at −3.7 ft on December 24.

Tides here are worked out from the reference station at Seattle, Puget Sound, with NOAA time and height corrections. Times are good for planning, but local wind can shift them. The nearest other station is Lockheed Shipyard, 4 mi away, where high tide comes about 11 min earlier. For tidal currents, see Harbor Island West.

Predictions are based on Seattle, Puget Sound.

Height unitsftmAdd this tide widget to your site. It's free.Week plannerPrintable October calendar

Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.