Tides Today & Tomorrow in Redwood City, CA

TIDE TIMES for Friday, July 17, 2026
The tide is currently rising in Redwood City, CA.
Next low tide : 9:38 am (-0.9 ft)
Next high tide : in 1h 30m at 2:44 am (8.6 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 6:01 am
Moon phase : Waxing Crescent (15% illuminated)
Tide Station Location : Station #9414523
Common Questions About Tides

Redwood City, CA Tides - Jan 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:467.79:075.81:232.72:571.27:235:01Waxing Gibbous1Tue
2Wed8:248.010:106.12:163.03:450.67:235:02Waxing Gibbous2Wed
3Thu9:038.211:046.43:093.34:300.07:235:03Waxing Gibbous3Thu
4Fri9:428.411:536.74:003.55:11-0.47:235:04Waxing Gibbous4Fri
5Sat10:228.64:483.55:51-0.87:235:05Full Moon5Sat
6Sun12:386.911:04 AM8.85:343.46:30-1.17:235:05Full Moon6Sun
7Mon1:207.011:46 AM8.96:193.37:09-1.37:235:06Full Moon7Mon
8Tue2:017.012:318.97:043.17:48-1.47:235:07Full Moon8Tue
9Wed2:397.11:188.87:502.98:28-1.27:235:08Waning Gibbous9Wed
10Thu3:177.22:098.48:402.79:09-0.97:235:09Waning Gibbous10Thu
11Fri3:567.33:067.79:352.59:53-0.37:235:10Waning Gibbous11Fri
12Sat4:377.64:137.010:382.210:410.57:235:11Third Quarter12Sat
13Sun5:227.85:336.311:491.811:351.37:225:12Third Quarter13Sun
14Mon6:118.17:025.91:051.27:225:13Third Quarter14Mon
15Tue7:028.48:286.012:372.12:150.57:225:14Waning Crescent15Tue
16Wed7:558.69:446.21:422.73:19-0.27:215:15Waning Crescent16Wed
17Thu8:478.810:496.62:473.14:15-0.87:215:16Waning Crescent17Thu
18Fri9:398.911:436.93:483.25:06-1.17:215:17Waning Crescent18Fri
19Sat10:298.84:443.25:52-1.37:205:18New Moon19Sat
20Sun12:307.111:16 AM8.75:363.16:34-1.27:205:19New Moon20Sun
21Mon1:127.212:008.56:232.97:13-1.07:195:21New Moon21Mon
22Tue1:517.212:428.37:082.87:48-0.77:195:22New Moon22Tue
23Wed2:267.21:247.97:502.78:21-0.37:185:23Waxing Crescent23Wed
24Thu2:597.12:067.48:322.68:520.27:175:24Waxing Crescent24Thu
25Fri3:297.12:516.99:152.59:220.77:175:25Waxing Crescent25Fri
26Sat3:587.13:426.310:022.59:551.47:165:26Waxing Crescent26Sat
27Sun4:307.14:455.810:562.410:332.17:155:27First Quarter27Sun
28Mon5:057.26:045.412:002.27:155:28First Quarter28Mon
29Tue5:487.37:285.41:101.87:145:29First Quarter29Tue
30Wed6:377.58:455.612:253.32:131.37:135:30First Quarter30Wed
31Thu7:297.79:506.01:343.63:100.77:125:31Waxing Gibbous31Thu
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 6:11 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 spring phase. Tonight's moon is 15% 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 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 Waxing Crescent (15% illuminated). This places Redwood City, 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