Tides Today & Tomorrow in Trinidad Harbor, CA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Trinidad Harbor, CA.
Next low tide (tomorrow) : 2:37 am (0.8 ft)
Next high tide : in 14m at 6:50 pm (5.9 ft)
Sunset today : 8:06 pm
Sunrise tomorrow : 6:32 am
Moon phase : First Quarter (66% illuminated)
Tide Station Location : Station #9419059
Common Questions About Tides

Trinidad Harbor, CA Tides - Aug 1931

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:266.41:505.77:13-0.27:222.45:117:33Waning Gibbous1Sat
2Sun1:066.02:195.87:430.28:062.25:127:32Waning Gibbous2Sun
3Mon1:485.52:485.98:110.88:542.15:137:31Waning Gibbous3Mon
4Tue2:365.03:186.08:401.49:471.95:147:30Third Quarter4Tue
5Wed3:334.53:516.09:112.110:471.75:157:29Third Quarter5Wed
6Thu4:474.14:306.19:462.711:531.45:167:28Third Quarter6Thu
7Fri6:214.05:176.210:333.35:177:27Third Quarter7Fri
8Sat7:584.16:146.31:001.011:39 AM3.65:187:25Waning Crescent8Sat
9Sun9:084.47:146.62:010.512:573.85:197:24Waning Crescent9Sun
10Mon9:554.88:136.92:54-0.12:073.65:207:23Waning Crescent10Mon
11Tue10:345.19:077.33:41-0.73:073.35:217:22Waning Crescent11Tue
12Wed11:095.49:597.64:24-1.14:002.95:227:20New Moon12Wed
13Thu11:435.810:497.75:05-1.44:512.45:237:19New Moon13Thu
14Fri12:186.15:45-1.45:421.95:247:18New Moon14Fri
15Sat12:536.56:24-1.26:341.45:257:16Waxing Crescent15Sat
16Sun12:327.21:296.87:03-0.67:281.05:267:15Waxing Crescent16Sun
17Mon1:276.62:077.07:420.18:260.75:277:13Waxing Crescent17Mon
18Tue2:285.92:487.18:221.09:280.55:287:12First Quarter18Tue
19Wed3:375.23:347.19:061.910:360.45:297:10First Quarter19Wed
20Thu5:004.74:266.99:582.711:500.35:307:09First Quarter20Thu
21Fri6:364.65:276.811:043.35:317:08First Quarter21Fri
22Sat8:074.76:366.61:040.112:263.65:327:06Waxing Gibbous22Sat
23Sun9:145.07:446.62:11-0.11:473.65:337:05Waxing Gibbous23Sun
24Mon10:025.28:436.73:07-0.32:513.35:347:03Waxing Gibbous24Mon
25Tue10:405.49:336.73:54-0.43:423.05:357:01Waxing Gibbous25Tue
26Wed11:115.610:176.74:33-0.44:252.65:367:00Full Moon26Wed
27Thu11:405.710:576.65:08-0.45:042.35:376:58Full Moon27Thu
28Fri12:065.95:38-0.25:412.05:386:57Full Moon28Fri
29Sat12:306.06:060.16:171.75:396:55Full Moon29Sat
30Sun12:126.212:546.16:330.56:541.55:406:54Waning Gibbous30Sun
31Mon12:515.81:186.26:591.17:321.45:416:52Waning Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9419059)

Common Questions About Trinidad Harbor, CA Tides

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

Slack tide in Trinidad Harbor, CA is approximately 10:43 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 Trinidad Harbor, CA?

Trinidad Harbor, CA is currently in a transitional phase. Tonight's moon is 66% 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 Trinidad Harbor, 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 Trinidad Harbor, CA?

Tide predictions for Trinidad Harbor, 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 Trinidad Harbor, CA?

Tide data for Trinidad Harbor, CA is sourced from NOAA Station #9419059. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9419059.

What is the moon phase in Trinidad Harbor, CA tonight?

Tonight the moon over Trinidad Harbor, CA is First Quarter (66% illuminated). This places Trinidad Harbor, 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