Seattle Tide Times & Tide Chart

High and low tide predictions for Seattle, Pacific Northwest (NOAA station 9447130). Heights are in feet relative to Mean Lower Low Water (MLLW) — negative values are minus tides, the best for tidepooling.

Plan a visit — find your tide window →

Upcoming tides

Monday, September 28

12:21 AM	Low tide	0.14 ft
6:46 AM	High tide	10.86 ft
12:31 PM	Low tide	4.06 ft
6:15 PM	High tide	11.39 ft

Tuesday, September 29

12:59 AM	Low tide	-0.84 ft
7:38 AM	High tide	11.02 ft
1:13 PM	Low tide	5.21 ft
6:45 PM	High tide	11.27 ft

Wednesday, September 30

1:41 AM	Low tide	-1.47 ft
8:35 AM	High tide	10.99 ft
1:59 PM	Low tide	6.32 ft
7:18 PM	High tide	11.01 ft

Thursday, October 1

2:28 AM	Low tide	-1.67 ft
9:38 AM	High tide	10.81 ft
2:54 PM	Low tide	7.27 ft
7:58 PM	High tide	10.56 ft

Friday, October 2

3:21 AM	Low tide	-1.47 ft
10:53 AM	High tide	10.57 ft
4:04 PM	Low tide	7.94 ft
8:48 PM	High tide	9.94 ft

Astronomical predictions from NOAA CO-OPS; actual levels vary with weather and swell.

Tidepooling near Seattle

Constellation Park, Alki Point — South of the lighthouse; summer beach-naturalist programs meet the big midday lows.
Discovery Park, South Beach — Cobble and boulder beach below the lighthouse with broad flats on minus tides.
Saltwater State Park, Des Moines — Easy access and rich cobble beds between the creek and the point.

What to look for

moon snails and their sand collars, ochre and mottled sea stars, sea cucumbers, shield limpets, gunnels and clingfish under rocks, hermit crabs.

Best time of year

The year's lowest daytime tides land near the summer solstice — big midday minus tides from May through July. Winter's extreme lows mostly fall at night, so plan summer trips.

Conditions and access change — check the park's official page and local hazard advisories before you go, and confirm the tide on the day. New to tidepools? Read how to go tidepooling safely.