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 2h 06m at 2:35 am (0.7 ft)
Next high tide : 8:12 am (2.9 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 6:25 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #9415176
Common Questions About Tides

Collinsville, CA Tides - Apr 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:033.87:592.71:240.35:526:30Waning Gibbous1Thu
2Fri5:483.69:032.712:301.52:240.35:506:31Third Quarter2Fri
3Sat6:433.410:022.81:321.63:280.35:496:32Third Quarter3Sat
4Sun7:513.210:542.92:451.64:270.25:476:32Third Quarter4Sun
5Mon9:133.111:373.04:031.45:170.15:466:33Third Quarter5Mon
6Tue10:363.15:121.26:000.15:446:34Waning Crescent6Tue
7Wed12:143.211:44 AM3.26:110.86:380.25:436:35Waning Crescent7Wed
8Thu12:453.412:443.37:040.57:130.35:416:36Waning Crescent8Thu
9Fri1:133.61:393.37:550.37:490.55:406:37New Moon9Fri
10Sat1:403.92:343.48:450.08:260.75:386:38New Moon10Sat
11Sun2:114.23:293.39:35-0.19:060.95:376:39New Moon11Sun
12Mon2:454.44:273.310:26-0.29:501.15:366:40Waxing Crescent12Mon
13Tue3:244.55:283.211:20-0.210:391.25:346:41Waxing Crescent13Tue
14Wed4:084.46:323.112:17-0.25:336:42Waxing Crescent14Wed
15Thu4:584.27:393.11:19-0.15:316:43Waxing Crescent15Thu
16Fri5:563.98:453.112:391.42:24-0.15:306:44First Quarter16Fri
17Sat7:083.59:463.21:551.43:280.05:286:44First Quarter17Sat
18Sun8:383.210:423.33:161.34:280.05:276:45First Quarter18Sun
19Mon10:033.111:313.54:321.05:200.05:266:46Waxing Gibbous19Mon
20Tue11:143.05:390.76:060.15:246:47Waxing Gibbous20Tue
21Wed12:143.612:143.06:370.46:450.25:236:48Waxing Gibbous21Wed
22Thu12:523.71:063.07:290.17:200.55:226:49Waxing Gibbous22Thu
23Fri1:253.81:553.08:170.07:510.75:206:50Full Moon23Fri
24Sat1:513.82:433.09:01-0.18:181.05:196:51Full Moon24Sat
25Sun2:113.83:293.09:43-0.18:451.25:186:52Full Moon25Sun
26Mon2:263.94:163.010:22-0.19:161.45:176:53Full Moon26Mon
27Tue2:454.05:033.010:590.09:511.55:156:54Waning Gibbous27Tue
28Wed3:134.05:522.911:340.010:331.65:146:55Waning Gibbous28Wed
29Thu3:494.06:422.912:080.05:136:56Waning Gibbous29Thu
30Fri4:303.87:332.812:440.05:126:57Waning Gibbous30Fri
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 37% 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 First Quarter (37% 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