Tides Today & Tomorrow in Joice Island, Suisun Slough, CA

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Joice Island, Suisun Slough, CA.
Next low tide : in 2h 59m at 12:25 pm (0.9 ft)
Next high tide : 6:27 pm (5.1 ft)
Sunset today : 7:59 pm
Sunrise tomorrow : 6:25 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9415379
Common Questions About Tides

Joice Island, Suisun Slough, CA Tides - May 1945

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:195.47:133.712:370.06:117:59Waning Gibbous1Tue
2Wed5:035.38:143.71:230.06:107:59Waning Gibbous2Wed
3Thu5:535.19:133.812:522.12:220.06:098:00Third Quarter3Thu
4Fri6:544.710:084.01:592.13:270.06:088:01Third Quarter4Fri
5Sat8:084.410:564.23:182.04:280.06:068:02Third Quarter5Sat
6Sun9:364.311:384.44:371.65:220.06:058:03Third Quarter6Sun
7Mon11:004.25:471.26:100.06:048:04Waning Crescent7Mon
8Tue12:154.712:124.36:490.76:530.26:038:05Waning Crescent8Tue
9Wed12:495.11:164.47:460.37:350.56:028:06Waning Crescent9Wed
10Thu1:225.42:164.48:41-0.18:160.86:018:07New Moon10Thu
11Fri1:565.73:154.49:34-0.39:001.16:008:08New Moon11Fri
12Sat2:305.94:144.410:27-0.59:451.55:598:09New Moon12Sat
13Sun3:076.05:154.411:19-0.510:341.85:588:09Waxing Crescent13Sun
14Mon3:475.96:164.312:12-0.45:578:10Waxing Crescent14Mon
15Tue4:315.67:174.31:05-0.45:578:11Waxing Crescent15Tue
16Wed5:205.28:184.412:272.12:00-0.25:568:12Waxing Crescent16Wed
17Thu6:184.79:154.41:352.12:56-0.15:558:13First Quarter17Thu
18Fri7:324.210:094.52:492.03:510.05:548:14First Quarter18Fri
19Sat8:593.910:574.64:031.74:420.15:538:15First Quarter19Sat
20Sun10:193.711:404.85:111.35:270.25:538:16First Quarter20Sun
21Mon11:263.66:110.96:070.45:528:16Waxing Gibbous21Mon
22Tue12:184.912:243.67:050.56:410.65:518:17Waxing Gibbous22Tue
23Wed12:505.01:183.77:540.27:111.05:518:18Waxing Gibbous23Wed
24Thu1:155.02:083.78:390.07:391.35:508:19Waxing Gibbous24Thu
25Fri1:335.22:573.89:22-0.18:081.65:498:20Full Moon25Fri
26Sat1:485.33:463.910:02-0.18:421.95:498:20Full Moon26Sat
27Sun2:085.54:343.910:40-0.19:212.15:488:21Full Moon27Sun
28Mon2:375.75:224.011:16-0.110:042.25:488:22Full Moon28Mon
29Tue3:145.76:114.011:50-0.210:522.35:478:23Waning Gibbous29Tue
30Wed3:565.76:594.012:26-0.25:478:23Waning Gibbous30Wed
31Thu4:445.57:484.11:06-0.25:468:24Waning Gibbous31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415379)

Common Questions About Joice Island, Suisun Slough, CA Tides

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What time does the tide turn (slack tide) in Joice Island, Suisun Slough, CA today?

Slack tide in Joice Island, Suisun Slough, CA is approximately 3:26 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 Joice Island, Suisun Slough, CA?

Joice Island, Suisun Slough, CA is currently in a transitional phase. Tonight's moon is 28% 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 shifting between spring and neap.

What datum are Joice Island, Suisun Slough, CA 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 Joice Island, Suisun Slough, CA?

Tide predictions for Joice Island, Suisun Slough, CA 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 Joice Island, Suisun Slough, CA?

Tide data for Joice Island, Suisun Slough, CA is sourced from NOAA Station #9415379. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415379.

What is the moon phase in Joice Island, Suisun Slough, CA tonight?

Tonight the moon over Joice Island, Suisun Slough, CA is Waxing Crescent (28% illuminated). This places Joice Island, Suisun Slough, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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