Charleston (Coos Bay) tide windows

Name: Charleston (Coos Bay) daylight low-tide windows
Creator: Tidewindow
License: https://creativecommons.org/licenses/by/4.0/

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 2026-07-04

Jul 13, 2026 (Mon): the tide bottoms at -2.2 ft at 6:04 AM — walkable 3:30 AM–8:50 AM, arrive by 5:04 AM. 90 · Exceptional

Every daylight window, next 30 days

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

Date	Low	Height	Window	Daylight	Score
Jul 4, 2026 Sat	9:39 AM	-0.4 ft	7:45 AM–11:35 AM	3h 50m	68 · Good
Jul 5, 2026 Sun	10:13 AM	0.1 ft	8:35 AM–11:50 AM	3h 15m	59 · Fair
Jul 6, 2026 Mon	10:50 AM	0.6 ft	9:50 AM–11:50 AM	2h 0m	30 · Skip
Jul 9, 2026 Thu	2:13 AM	0.5 ft	1:00 AM–3:30 AM	night	0 · Skip
Jul 10, 2026 Fri	3:17 AM	-0.3 ft	1:25 AM–5:25 AM	night	0 · Skip
Jul 11, 2026 Sat	4:17 AM	-1.1 ft	2:00 AM–6:50 AM	1h 2m	62 · Good
Jul 12, 2026 Sun	5:12 AM	-1.7 ft	2:45 AM–7:55 AM	2h 7m	86 · Great
Jul 13, 2026 Mon	6:04 AM	-2.2 ft	3:30 AM–8:50 AM	3h 1m	90 · Exceptional
Jul 14, 2026 Tue	6:53 AM	-2.4 ft	4:20 AM–9:40 AM	3h 50m	90 · Exceptional
Jul 15, 2026 Wed	7:38 AM	-2.3 ft	5:10 AM–10:20 AM	4h 29m	90 · Exceptional
Jul 16, 2026 Thu	8:22 AM	-2.0 ft	6:00 AM–10:55 AM	4h 55m	90 · Exceptional
Jul 17, 2026 Fri	9:04 AM	-1.4 ft	6:50 AM–11:20 AM	4h 30m	84 · Great
Jul 18, 2026 Sat	9:45 AM	-0.7 ft	7:50 AM–11:40 AM	3h 50m	73 · Good
Jul 19, 2026 Sun	10:25 AM	0.2 ft	9:00 AM–11:45 AM	2h 45m	53 · Fair
Jul 23, 2026 Thu	2:36 AM	0.7 ft	1:35 AM–3:40 AM	night	0 · Skip
Jul 24, 2026 Fri	3:36 AM	0.4 ft	2:05 AM–5:15 AM	night	0 · Skip
Jul 25, 2026 Sat	4:29 AM	0.0 ft	2:40 AM–6:25 AM	0h 25m	0 · Skip
Jul 26, 2026 Sun	5:14 AM	-0.3 ft	3:15 AM–7:20 AM	1h 19m	49 · Fair
Jul 27, 2026 Mon	5:54 AM	-0.6 ft	3:50 AM–8:05 AM	2h 3m	52 · Fair
Jul 28, 2026 Tue	6:30 AM	-0.8 ft	4:25 AM–8:45 AM	2h 42m	62 · Good
Jul 29, 2026 Wed	7:03 AM	-0.9 ft	4:55 AM–9:20 AM	3h 16m	68 · Good
Jul 30, 2026 Thu	7:35 AM	-0.9 ft	5:30 AM–9:45 AM	3h 40m	68 · Good
Jul 31, 2026 Fri	8:05 AM	-0.8 ft	6:05 AM–10:10 AM	4h 4m	70 · Good
Aug 1, 2026 Sat	8:34 AM	-0.5 ft	6:45 AM–10:25 AM	3h 40m	70 · Good
Aug 2, 2026 Sun	9:04 AM	-0.0 ft	7:30 AM–10:35 AM	3h 5m	61 · Good

Monthly calendars

July 2026 August 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).

Species	Scientific name	Observations
Black Tegula	Tegula funebralis	6
Striped Dogwinkle	Nucella ostrina	3
White-and-orange-tipped Nudibranch	Antiopella fusca	3
Northwest Hesperian	Vespericola columbianus	3
Red Sponge Dorid	Rostanga pulchra	2
Frilled Dogwinkle	Nucella lamellosa	2
Spotted Dorid	Triopha maculata	1
Monterey Dorid	Doris montereyensis	1
Nanaimo Dorid	Acanthodoris nanaimoensis	1
Pacific Banana Slug	Ariolimax columbianus	1

Quick answers

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

Jul 13, 2026 (Mon): a -2.2 ft low at 6:04 AM, walkable from 3:30 AM to 8:50 AM — score 90/100. 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?

17 of the next 30 days' 18 minus tides overlap daylight by at least 30 minutes, as of 2026-07-04. 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.