Tidewindow

Charleston (Coos Bay) tide windows

NOAA 9432780

South-central Oregon coast station beside Sunset Bay — some of the state's richest and most sheltered tidepools.

Covers: Sunset Bay State Park · Cape Arago · Simpson Reef

Next best window · computed 2026-10-04

Oct 25, 2026 (Sun): the tide bottoms at -0.6 ft at 6:27 PM — walkable 4:40 PM–8:15 PM, arrive by 5:27 PM. 54 · Fair

sunset+1.0 ft walkable-0.6 ft · 6:27 PM

Every daylight window, next 30 days

Heights in feet MLLW from NOAA station 9432780 (Charleston) predictions. ✳ = federal holiday.

DateLowHeightWindowDaylightScore
Mon2:18 AM0.2 ft12:45 AM–3:55 AMnight0 · Skip
Tue3:20 AM0.2 ft1:50 AM–4:50 AMnight0 · Skip
Wed4:12 AM0.3 ft2:50 AM–5:30 AMnight0 · Skip
Thu4:57 AM0.5 ft3:50 AM–6:05 AMnight0 · Skip
Fri5:37 AM0.8 ft4:55 AM–6:15 AMnight0 · Skip
Fri6:12 PM0.2 ft4:55 PM–7:25 PM1h 49m34 · Skip
Sat6:52 PM-0.2 ft5:20 PM–8:30 PM1h 22m44 · Fair
Sun7:30 PM-0.5 ft5:45 PM–9:20 PM0h 56m45 · Fair
Mon ✳8:08 PM-0.5 ft6:20 PM–10:00 PM0h 19m0 · Skip
Tue8:45 PM-0.3 ft7:00 PM–10:35 PMnight0 · Skip
Wed9:26 PM-0.0 ft7:50 PM–11:10 PMnight0 · Skip
Thu10:10 PM0.4 ft8:50 PM–11:30 PMnight0 · Skip
Fri11:03 PM0.8 ft10:20 PM–11:50 PMnight0 · Skip
Sat5:47 PM0.2 ft4:30 PM–7:10 PM1h 50m40 · Fair
Sun6:27 PM-0.6 ft4:40 PM–8:15 PM1h 38m54 · Fair
Mon7:09 PM-1.2 ft5:05 PM–9:15 PM1h 12m51 · Fair
Tue7:53 PM-1.5 ft5:45 PM–10:10 PM0h 30m50 · Fair
Wed8:40 PM-1.5 ft6:30 PM–11:05 PMnight0 · Skip
Thu9:31 PM-1.2 ft7:20 PM–11:55 PMnight0 · Skip
Fri10:28 PM-0.8 ft8:25 PM–12:40 AMnight0 · Skip
Sat11:32 PM-0.3 ft9:40 PM–1:25 AMnight0 · Skip
Sun11:39 PM0.2 ft10:10 PM–1:10 AMnight0 · Skip
Tue12:44 AM0.6 ft11:45 PM–1:40 AMnight0 · Skip

Next 7 days of high and low tides

The complete high/low sequence from NOAA station 9432780, in local time. Tidewindow's scored table above is the smaller decision set: lows under +1.0 ft with a usable shoreline window.

NOAA 9432780 predictions · feet MLLW · local time
DateTypeTimeHeight
SunHigh8:15 AM5.7 ft
SunLow1:08 PM3.8 ft
SunHigh7:05 PM7.0 ft
MonLow2:18 AM0.2 ft
MonHigh9:18 AM6.1 ft
MonLow2:36 PM3.3 ft
MonHigh8:29 PM7.0 ft
TueLow3:20 AM0.2 ft
TueHigh10:06 AM6.7 ft
TueLow3:45 PM2.6 ft
TueHigh9:40 PM7.1 ft
WedLow4:12 AM0.3 ft
WedHigh10:46 AM7.2 ft
WedLow4:41 PM1.7 ft
WedHigh10:41 PM7.2 ft
ThuLow4:57 AM0.5 ft
ThuHigh11:21 AM7.7 ft
ThuLow5:29 PM0.9 ft
ThuHigh11:35 PM7.3 ft
FriLow5:37 AM0.8 ft
FriHigh11:54 AM8.0 ft
FriLow6:12 PM0.2 ft
SatHigh12:24 AM7.2 ft
SatLow6:14 AM1.2 ft
SatHigh12:26 PM8.2 ft
SatLow6:52 PM-0.2 ft
SunHigh1:11 AM7.1 ft

Monthly calendars

July 2026August 2026September 2026October 2026November 2026

What's in the pools right now

Research-grade observations within 5 km in the last 60 days, via iNaturalist (data © contributors, CC BY-NC).

SpeciesScientific nameObservations
Branched DendronotidDendronotus venustus24
Horned NudibranchHermissenda crassicornis5
Monterey DoridDoris montereyensis3
White-and-orange-tipped NudibranchAntiopella fusca3
Red Sponge DoridRostanga pulchra2
Enteromorpha-eating SapsuckerAplysiopsis enteromorphae2
Striped DogwinkleNucella ostrina2
Pacific OysterMagallana gigas2
Spotted DoridTriopha maculata1
Noble DoridPeltodoris nobilis1

Quick answers

When is the next good low tide at Charleston (Coos Bay)?

Oct 25, 2026 (Sun): a -0.6 ft low at 6:27 PM, walkable from 4:40 PM to 8:15 PM — score 54/100. Computed from NOAA station 9432780 predictions.

How low does the tide need to be at Charleston (Coos Bay)?

Tidewindow counts a window whenever the predicted height falls below +1.0 ft MLLW, and scores depth from +0.5 ft (0 points) to −2.0 ft (50 points). The lower the tide, the more of the intertidal zone is exposed — minus tides (below 0 ft) are when Sunset Bay State Park is at its best.

How many daylight minus tides does Charleston (Coos Bay) get in the next 30 days?

5 of the next 30 days' 12 minus tides overlap daylight by at least 30 minutes, as of 2026-10-04. The full list is in the table above.

Safety: tide predictions are astronomical forecasts, not observations — wind and swell change actual water levels. Follow posted rules at protected areas, and never turn your back on the ocean. See our methodology for exactly how windows and scores are computed.