Tides Today & Tomorrow in Redwood City, CA

TIDE TIMES for Monday, July 20, 2026
The tide is currently rising in Redwood City, CA.
Next low tide : 11:36 am (1.5 ft)
Next high tide : in 3h 27m at 5:38 am (6.5 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 6:03 am
Moon phase : First Quarter (43% illuminated)
Tide Station Location : Station #9414523
Common Questions About Tides

Redwood City, CA Tides - May 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:046.510:327.94:111.14:111.26:127:59Waxing Gibbous1Wed
2Thu10:586.611:068.05:000.64:531.56:118:00Waxing Gibbous2Thu
3Fri11:486.711:378.05:430.25:321.86:108:01Waxing Gibbous3Fri
4Sat12:356.86:23-0.16:102.16:098:02Full Moon4Sat
5Sun12:068.01:196.87:00-0.36:462.46:088:03Full Moon5Sun
6Mon12:328.02:026.87:35-0.47:222.66:068:03Full Moon6Mon
7Tue12:588.02:446.78:09-0.47:582.86:058:04Full Moon7Tue
8Wed1:278.03:266.78:42-0.48:363.06:048:05Waning Gibbous8Wed
9Thu1:597.94:086.69:16-0.49:173.16:048:06Waning Gibbous9Thu
10Fri2:367.84:516.59:54-0.310:043.16:038:07Waning Gibbous10Fri
11Sat3:227.55:386.610:36-0.110:583.16:028:08Waning Gibbous11Sat
12Sun4:167.26:296.711:250.16:018:09Third Quarter12Sun
13Mon5:236.87:217.012:033.012:230.36:008:10Third Quarter13Mon
14Tue6:436.58:117.41:162.61:250.65:598:10Third Quarter14Tue
15Wed8:066.48:587.92:261.92:260.85:588:11Third Quarter15Wed
16Thu9:226.59:438.43:301.13:241.05:578:12Waning Crescent16Thu
17Fri10:336.710:278.84:290.24:201.35:578:13Waning Crescent17Fri
18Sat11:387.011:129.15:24-0.65:141.65:568:14Waning Crescent18Sat
19Sun12:397.26:16-1.36:071.95:558:15New Moon19Sun
20Mon1:367.47:06-1.76:592.15:558:15New Moon20Mon
21Tue12:429.32:327.47:55-1.87:512.35:548:16New Moon21Tue
22Wed1:299.13:257.58:44-1.88:432.45:538:17Waxing Crescent22Wed
23Thu2:178.74:177.59:31-1.49:372.65:538:18Waxing Crescent23Thu
24Fri3:088.25:077.410:18-1.010:332.65:528:19Waxing Crescent24Fri
25Sat4:037.65:577.411:05-0.411:322.65:528:19Waxing Crescent25Sat
26Sun5:027.06:477.411:540.25:518:20First Quarter26Sun
27Mon6:096.47:357.512:372.512:450.85:518:21First Quarter27Mon
28Tue7:206.18:217.71:442.21:381.35:508:22First Quarter28Tue
29Wed8:305.99:037.92:471.72:301.75:508:22First Quarter29Wed
30Thu9:356.09:428.03:431.13:192.05:498:23Waxing Gibbous30Thu
31Fri10:356.110:198.14:330.64:062.35:498:24Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414523)

Common Questions About Redwood City, CA Tides

Show All
What time does the tide turn (slack tide) in Redwood City, CA today?

Slack tide in Redwood City, CA is approximately 8:37 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 Redwood City, CA?

Redwood City, CA is currently in a neap phase. Tonight's moon is 43% 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 minimum.

What datum are Redwood City, 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 Redwood City, CA?

Tide predictions for Redwood City, 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 Redwood City, CA?

Tide data for Redwood City, CA is sourced from NOAA Station #9414523. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9414523.

What is the moon phase in Redwood City, CA tonight?

Tonight the moon over Redwood City, CA is First Quarter (43% illuminated). This places Redwood City, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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