Tides Today & Tomorrow in Coos Bay, OR

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Coos Bay, OR.
Next low tide : 1:21 pm (3.0 ft)
Next high tide : in 2h 10m at 8:40 am (4.4 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 6:28 am
Moon phase : First Quarter (56% illuminated)
Tide Station Location : Station #9432845
Common Questions About Tides

Coos Bay, OR Tides - Oct 1927

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:475.54:056.69:582.711:040.76:135:59Waxing Crescent1Sat
2Sun5:445.14:446.510:373.16:145:58First Quarter2Sun
3Mon6:574.95:396.312:020.811:34 AM3.56:155:56First Quarter3Mon
4Tue8:175.06:536.21:100.912:583.66:165:54First Quarter4Tue
5Wed9:275.38:156.32:200.72:273.46:185:52First Quarter5Wed
6Thu10:185.89:286.73:240.43:383.06:195:51Waxing Gibbous6Thu
7Fri10:596.310:317.14:180.24:362.36:205:49Waxing Gibbous7Fri
8Sat11:376.911:287.45:06-0.15:281.46:215:47Waxing Gibbous8Sat
9Sun12:137.55:51-0.16:160.66:225:45Full Moon9Sun
10Mon12:227.712:508.06:330.07:03-0.16:245:44Full Moon10Mon
11Tue1:147.71:278.47:140.37:50-0.76:255:42Full Moon11Tue
12Wed2:077.52:068.57:560.78:38-1.06:265:40Waning Gibbous12Wed
13Thu3:017.22:478.58:381.39:27-1.16:275:38Waning Gibbous13Thu
14Fri3:586.83:308.29:231.910:20-0.86:285:37Waning Gibbous14Fri
15Sat4:596.44:187.710:142.511:18-0.56:305:35Third Quarter15Sat
16Sun6:066.05:147.211:143.06:315:33Third Quarter16Sun
17Mon7:225.86:226.612:230.012:323.36:325:32Third Quarter17Mon
18Tue8:395.97:406.31:340.32:003.36:335:30Third Quarter18Tue
19Wed9:446.18:586.22:440.63:193.06:345:29Waning Crescent19Wed
20Thu10:326.410:056.33:440.74:202.56:365:27Waning Crescent20Thu
21Fri11:096.711:006.44:340.85:081.96:375:25Waning Crescent21Fri
22Sat11:416.911:466.55:160.95:491.46:385:24Waning Crescent22Sat
23Sun12:097.25:521.16:251.06:395:22New Moon23Sun
24Mon12:286.512:367.36:251.36:590.66:415:21New Moon24Mon
25Tue1:086.51:027.46:561.67:310.36:425:19New Moon25Tue
26Wed1:476.51:287.57:251.98:040.16:435:18New Moon26Wed
27Thu2:276.31:547.47:552.28:370.06:445:16Waxing Crescent27Thu
28Fri3:076.22:217.48:252.69:120.06:465:15Waxing Crescent28Fri
29Sat3:506.02:507.28:562.99:510.16:475:13Waxing Crescent29Sat
30Sun4:385.73:247.09:313.210:360.36:485:12Waxing Crescent30Sun
31Mon5:335.54:076.810:153.511:290.56:505:11First Quarter31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9432845)

Common Questions About Coos Bay, OR Tides

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

Slack tide in Coos Bay, OR is approximately 11:00 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 56% 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 (56% 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