Tides Today & Tomorrow in Napa, CA

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in Napa, CA.
Next low tide : 3:57 pm (2.8 ft)
Next high tide : in 5h 49m at 11:34 am (4.8 ft)
Sunset today : 8:27 pm
Sunrise tomorrow : 6:04 am
Moon phase : Waxing Gibbous (72% illuminated)
Tide Station Location : Station #9415623
Common Questions About Tides

Napa, CA Tides - May 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:147.53:316.09:09-0.89:021.56:118:00Full Moon1Wed
2Thu2:517.74:295.99:56-1.19:471.96:108:01Waning Gibbous2Thu
3Fri3:327.75:315.810:47-1.210:382.36:098:02Waning Gibbous3Fri
4Sat4:197.56:365.711:41-1.111:402.56:088:03Waning Gibbous4Sat
5Sun5:137.17:465.712:42-0.96:078:04Third Quarter5Sun
6Mon6:166.78:535.812:572.71:47-0.66:068:05Third Quarter6Mon
7Tue7:306.29:526.12:282.52:55-0.46:058:06Third Quarter7Tue
8Wed8:495.810:426.43:512.23:58-0.16:048:07Third Quarter8Wed
9Thu10:075.611:256.74:581.64:530.16:038:08Waning Crescent9Thu
10Fri11:185.55:541.15:420.46:028:09Waning Crescent10Fri
11Sat12:026.912:205.56:420.66:250.76:018:10Waning Crescent11Sat
12Sun12:367.01:165.57:250.27:051.16:008:10Waning Crescent12Sun
13Mon1:067.12:085.58:04-0.17:431.55:598:11New Moon13Mon
14Tue1:347.12:575.58:39-0.38:201.85:588:12New Moon14Tue
15Wed2:027.13:445.59:14-0.48:562.15:578:13New Moon15Wed
16Thu2:307.04:305.49:48-0.59:342.45:568:14New Moon16Thu
17Fri2:596.85:175.310:23-0.510:132.75:558:15Waxing Crescent17Fri
18Sat3:326.76:055.311:00-0.410:582.85:558:16Waxing Crescent18Sat
19Sun4:086.46:565.211:41-0.311:512.95:548:17Waxing Crescent19Sun
20Mon4:516.17:495.212:27-0.15:538:17Waxing Crescent20Mon
21Tue5:415.78:395.412:592.91:180.05:528:18First Quarter21Tue
22Wed6:425.49:245.62:172.82:130.25:528:19First Quarter22Wed
23Thu7:545.110:035.93:282.53:070.35:518:20First Quarter23Thu
24Fri9:115.010:386.24:252.03:590.55:518:21First Quarter24Fri
25Sat10:265.011:126.75:131.44:480.75:508:21Waxing Gibbous25Sat
26Sun11:355.211:457.15:570.85:331.05:498:22Waxing Gibbous26Sun
27Mon12:395.46:400.16:181.35:498:23Waxing Gibbous27Mon
28Tue12:217.51:395.67:23-0.57:031.65:488:24Full Moon28Tue
29Wed12:587.92:375.88:08-1.07:501.95:488:25Full Moon29Wed
30Thu1:398.23:346.08:55-1.48:382.25:478:25Full Moon30Thu
31Fri2:228.24:306.09:44-1.69:312.45:478:26Waning Gibbous31Fri
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 1:45 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 transitional phase. Tonight's moon is 72% 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 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 Waxing Gibbous (72% illuminated). This places Napa, 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