Tides Today & Tomorrow in Collinsville, CA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Collinsville, CA.
Next low tide : in 4h 50m at 2:35 am (0.7 ft)
Next high tide : 8:12 am (2.9 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9415176
Common Questions About Tides

Collinsville, CA Tides - Jul 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:082.88:343.92:461.02:090.54:487:34Third Quarter1Thu
2Fri9:432.69:224.24:070.83:020.94:487:34Third Quarter2Fri
3Sat11:082.710:134.45:220.54:001.24:487:33Waning Crescent3Sat
4Sun12:212.96:290.25:011.54:497:33Waning Crescent4Sun
5Mon1:243.17:280.06:061.74:507:33Waning Crescent5Mon
6Tue2:203.28:22-0.27:111.74:507:33New Moon6Tue
7Wed12:534.83:123.49:11-0.38:151.74:517:33New Moon7Wed
8Thu1:464.84:013.59:57-0.39:161.64:517:32New Moon8Thu
9Fri2:394.64:473.610:40-0.310:151.54:527:32Waxing Crescent9Fri
10Sat3:314.45:313.711:18-0.211:121.34:537:32Waxing Crescent10Sat
11Sun4:254.06:143.711:54-0.14:537:31Waxing Crescent11Sun
12Mon5:213.76:553.712:101.212:280.14:547:31Waxing Crescent12Mon
13Tue6:233.37:363.71:101.11:020.34:557:30First Quarter13Tue
14Wed7:342.98:183.82:140.91:370.64:557:30First Quarter14Wed
15Thu8:502.79:013.83:220.82:190.94:567:29First Quarter15Thu
16Fri10:052.69:453.94:300.63:071.24:577:29First Quarter16Fri
17Sat11:152.710:283.95:330.44:011.54:577:28Waxing Gibbous17Sat
18Sun12:172.96:290.24:591.74:587:28Waxing Gibbous18Sun
19Mon1:113.07:190.15:541.84:597:27Waxing Gibbous19Mon
20Tue1:593.28:040.06:471.95:007:27Waxing Gibbous20Tue
21Wed12:274.22:423.38:430.07:361.95:007:26Full Moon21Wed
22Thu1:054.23:223.39:190.08:231.85:017:25Full Moon22Thu
23Fri1:444.23:563.49:500.09:081.75:027:24Full Moon23Fri
24Sat2:254.24:263.410:160.09:521.55:037:24Full Moon24Sat
25Sun3:084.14:523.510:400.010:361.35:047:23Waning Gibbous25Sun
26Mon3:533.95:163.611:040.111:221.25:047:22Waning Gibbous26Mon
27Tue4:433.75:433.811:330.25:057:21Waning Gibbous27Tue
28Wed5:383.46:163.912:131.012:080.45:067:20Waning Gibbous28Wed
29Thu6:463.16:574.11:130.912:500.65:077:20Third Quarter29Thu
30Fri8:122.87:464.22:290.91:391.05:087:19Third Quarter30Fri
31Sat9:442.78:434.33:540.72:371.35:097:18Third Quarter31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415176)

Common Questions About Collinsville, CA Tides

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What time does the tide turn (slack tide) in Collinsville, CA today?

Slack tide in Collinsville, CA is approximately 5:23 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 Collinsville, CA?

Collinsville, 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 Collinsville, 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 Collinsville, CA?

Tide predictions for Collinsville, 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 Collinsville, CA?

Tide data for Collinsville, CA is sourced from NOAA Station #9415176. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415176.

What is the moon phase in Collinsville, CA tonight?

Tonight the moon over Collinsville, CA is Waxing Crescent (28% illuminated). This places Collinsville, 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