Tides Today & Tomorrow in Napa, CA

TIDE TIMES for Wednesday, July 29, 2026
The tide is currently falling in Napa, CA.
Next low tide : in 2h 54m at 8:37 pm (2.7 ft)
Next high tide (tomorrow) : 2:02 am (7.4 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 6:09 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #9415623
Common Questions About Tides

Napa, CA Tides - Jun 1965

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:268.14:525.89:55-1.59:392.75:478:26Waxing Crescent1Tue
2Wed3:138.05:485.910:46-1.510:372.85:468:27Waxing Crescent2Wed
3Thu4:067.76:445.911:40-1.311:452.85:468:28Waxing Crescent3Thu
4Fri5:047.27:406.112:36-1.05:468:28First Quarter4Fri
5Sat6:106.58:336.31:062.61:35-0.65:458:29First Quarter5Sat
6Sun7:245.99:236.62:302.32:34-0.25:458:29First Quarter6Sun
7Mon8:475.310:086.93:471.73:300.35:458:30First Quarter7Mon
8Tue10:115.010:497.24:531.14:230.85:458:30Waxing Gibbous8Tue
9Wed11:295.011:267.55:490.65:131.25:458:31Waxing Gibbous9Wed
10Thu12:385.16:370.15:591.75:448:32Waxing Gibbous10Thu
11Fri12:017.61:395.37:20-0.36:432.15:448:32Waxing Gibbous11Fri
12Sat12:357.62:335.48:00-0.57:262.45:448:32Full Moon12Sat
13Sun1:077.63:225.58:37-0.78:082.75:448:33Full Moon13Sun
14Mon1:407.44:075.69:12-0.78:502.95:448:33Full Moon14Mon
15Tue2:137.34:495.69:47-0.79:313.05:448:34Full Moon15Tue
16Wed2:487.15:295.510:24-0.610:143.05:448:34Waning Gibbous16Wed
17Thu3:256.86:085.511:01-0.511:013.05:458:34Waning Gibbous17Thu
18Fri4:056.56:475.511:40-0.311:553.05:458:35Waning Gibbous18Fri
19Sat4:486.17:265.612:21-0.15:458:35Waning Gibbous19Sat
20Sun5:385.78:045.812:592.91:040.25:458:35Third Quarter20Sun
21Mon6:385.28:416.12:102.61:490.55:458:35Third Quarter21Mon
22Tue7:524.79:176.43:172.22:370.85:458:36Third Quarter22Tue
23Wed9:184.59:536.84:141.73:261.25:468:36Third Quarter23Wed
24Thu10:444.610:307.25:041.04:171.65:468:36Waning Crescent24Thu
25Fri12:004.85:500.45:072.05:468:36Waning Crescent25Fri
26Sat1:065.26:35-0.35:572.35:478:36Waning Crescent26Sat
27Sun2:045.57:21-0.86:482.55:478:36New Moon27Sun
28Mon12:338.42:575.88:07-1.37:392.75:478:36New Moon28Mon
29Tue1:218.63:476.08:55-1.58:332.75:488:36New Moon29Tue
30Wed2:118.64:366.29:44-1.69:292.75:488:36Waxing Crescent30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415623)

Common Questions About Napa, CA Tides

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

Slack tide in Napa, CA is approximately 11:19 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 Napa, CA?

Napa, CA is currently in a spring phase. Tonight's moon is 100% 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 maximum.

What datum are Napa, 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 Napa, CA?

Tide predictions for Napa, 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 Napa, CA?

Tide data for Napa, CA is sourced from NOAA Station #9415623. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415623.

What is the moon phase in Napa, CA tonight?

Tonight the moon over Napa, CA is Full Moon (100% illuminated). This places Napa, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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