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 (tomorrow) : 3:18 am (0.8 ft)
Next high tide : in 5h 03m at 7:46 pm (6.3 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 - Aug 1926

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:305.17:417.11:280.71:071.65:067:40Third Quarter1Sun
2Mon8:564.98:377.12:390.42:102.15:077:38Waning Crescent2Mon
3Tue10:175.09:337.13:440.13:172.55:087:37Waning Crescent3Tue
4Wed11:235.210:267.14:42-0.24:202.65:097:36Waning Crescent4Wed
5Thu12:155.55:32-0.55:162.65:107:35Waning Crescent5Thu
6Fri12:575.76:16-0.66:042.55:117:33New Moon6Fri
7Sat1:335.96:55-0.76:472.35:127:32New Moon7Sat
8Sun12:397.22:066.07:31-0.77:252.25:137:31New Moon8Sun
9Mon1:187.12:386.18:04-0.68:032.05:147:29New Moon9Mon
10Tue1:557.03:086.28:35-0.48:391.95:157:28Waxing Crescent10Tue
11Wed2:326.73:386.29:06-0.19:171.85:167:27Waxing Crescent11Wed
12Thu3:106.44:096.39:360.29:581.85:187:25Waxing Crescent12Thu
13Fri3:496.04:406.310:060.610:421.75:197:24Waxing Crescent13Fri
14Sat4:345.55:146.310:391.111:341.65:207:22First Quarter14Sat
15Sun5:285.15:526.411:161.65:217:21First Quarter15Sun
16Mon6:364.76:376.412:341.412:012.15:227:19First Quarter16Mon
17Tue7:594.57:326.61:401.11:002.65:237:18First Quarter17Tue
18Wed9:234.68:346.82:470.62:112.85:247:16Waxing Gibbous18Wed
19Thu10:335.09:367.23:500.13:242.85:257:15Waxing Gibbous19Thu
20Fri11:285.410:357.64:47-0.54:302.65:267:13Waxing Gibbous20Fri
21Sat12:165.95:38-1.05:282.25:287:11Waxing Gibbous21Sat
22Sun12:596.46:25-1.46:221.75:297:10Full Moon22Sun
23Mon12:248.31:416.87:10-1.57:141.25:307:08Full Moon23Mon
24Tue1:168.32:227.27:53-1.48:050.85:317:07Full Moon24Tue
25Wed2:088.13:037.58:36-1.18:560.55:327:05Waning Gibbous25Wed
26Thu3:017.73:447.69:18-0.69:490.35:337:03Waning Gibbous26Thu
27Fri3:567.04:277.610:020.110:460.35:347:02Waning Gibbous27Fri
28Sat4:556.35:137.410:480.911:470.35:357:00Third Quarter28Sat
29Sun6:015.76:037.111:391.75:366:58Third Quarter29Sun
30Mon7:185.27:006.912:550.412:392.35:386:56Third Quarter30Mon
31Tue8:445.08:036.62:060.41:512.85:396:55Third Quarter31Tue
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 11:32 pm — 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