Tides Today & Tomorrow in Coos Bay, OR

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Coos Bay, OR.
Next low tide : in 4h 18m at 2:08 am (0.8 ft)
Next high tide : 8:40 am (4.4 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 6:26 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9432845
Common Questions About Tides

Coos Bay, OR Tides - Dec 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:576.73:547.910:023.110:58-0.77:294:42Waning Gibbous1Sat
2Sun5:556.74:557.211:113.211:55-0.17:304:42Third Quarter2Sun
3Mon6:546.76:056.512:303.27:314:41Third Quarter3Mon
4Tue7:526.87:235.912:540.51:522.87:334:41Third Quarter4Tue
5Wed8:447.08:445.61:531.13:042.37:344:41Third Quarter5Wed
6Thu9:307.39:595.62:481.64:051.77:354:41Waning Crescent6Thu
7Fri10:097.511:035.73:402.04:541.17:354:41Waning Crescent7Fri
8Sat10:447.711:565.84:262.45:360.67:364:41Waning Crescent8Sat
9Sun11:177.85:092.76:140.17:374:41Waning Crescent9Sun
10Mon12:436.011:49 AM7.85:492.96:49-0.27:384:41New Moon10Mon
11Tue1:256.112:217.96:273.17:23-0.47:394:41New Moon11Tue
12Wed2:056.212:537.87:033.37:57-0.47:404:41New Moon12Wed
13Thu2:436.21:267.77:393.48:32-0.47:414:41New Moon13Thu
14Fri3:226.22:007.68:153.59:07-0.37:414:41Waxing Crescent14Fri
15Sat4:026.22:367.48:533.69:44-0.27:424:41Waxing Crescent15Sat
16Sun4:436.23:157.29:353.610:230.17:434:42Waxing Crescent16Sun
17Mon5:256.24:006.810:263.611:050.47:444:42Waxing Crescent17Mon
18Tue6:096.34:556.311:293.511:510.77:444:42First Quarter18Tue
19Wed6:546.56:055.912:423.27:454:43First Quarter19Wed
20Thu7:406.97:285.512:411.11:552.67:454:43First Quarter20Thu
21Fri8:257.38:545.51:351.63:021.87:464:44First Quarter21Fri
22Sat9:107.810:125.62:312.04:010.87:464:44Waxing Gibbous22Sat
23Sun9:568.311:206.03:292.34:55-0.17:474:45Waxing Gibbous23Sun
24Mon10:428.74:262.65:47-0.97:474:45Waxing Gibbous24Mon
25Tue12:206.311:30 AM9.15:222.76:36-1.57:484:46Full Moon25Tue
26Wed1:156.612:189.36:162.87:24-1.87:484:46Full Moon26Wed
27Thu2:076.81:089.27:092.88:11-1.87:484:47Full Moon27Thu
28Fri2:567.01:589.08:012.88:58-1.67:494:48Waning Gibbous28Fri
29Sat3:457.12:508.68:552.89:45-1.27:494:49Waning Gibbous29Sat
30Sun4:337.13:427.99:512.810:32-0.67:494:49Waning Gibbous30Sun
31Mon5:207.14:387.210:532.811:190.27:494:50Waning Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9432845)

Common Questions About Coos Bay, OR Tides

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What time does the tide turn (slack tide) in Coos Bay, OR today?

Slack tide in Coos Bay, OR is approximately 5:24 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Coos Bay, OR?

Coos Bay, OR is currently in a neap phase. Tonight's moon is 47% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly minimum.

What datum are Coos Bay, OR tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Coos Bay, OR?

Tide predictions for Coos Bay, OR come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Coos Bay, OR?

Tide data for Coos Bay, OR is sourced from NOAA Station #9432845. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9432845.

What is the moon phase in Coos Bay, OR tonight?

Tonight the moon over Coos Bay, OR is First Quarter (47% illuminated). This places Coos Bay, OR in a neap tide cycle, so tidal ranges are near their weekly minimum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA