Tides Today & Tomorrow in Redwood City, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Redwood City, CA.
Next low tide (tomorrow) : 1:20 am (1.5 ft)
Next high tide : in 1h 38m at 5:49 pm (7.9 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 6:28 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9414523
Common Questions About Tides

Redwood City, CA Tides - Apr 1935

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:298.011:058.34:320.64:51-0.25:546:30Waning Crescent1Mon
2Tue11:267.911:408.65:23-0.25:340.25:536:31New Moon2Tue
3Wed12:217.86:12-0.76:160.75:526:32New Moon3Wed
4Thu12:158.81:167.57:00-1.06:581.35:506:33New Moon4Thu
5Fri12:518.82:117.27:48-1.17:421.95:496:34Waxing Crescent5Fri
6Sat1:278.63:086.88:36-0.88:272.55:476:35Waxing Crescent6Sat
7Sun2:078.34:076.59:25-0.59:173.05:466:36Waxing Crescent7Sun
8Mon2:527.85:096.310:180.010:143.45:446:37First Quarter8Mon
9Tue3:457.26:146.211:180.511:223.55:436:38First Quarter9Tue
10Wed4:516.77:156.412:230.75:416:38First Quarter10Wed
11Thu6:086.48:076.612:363.31:250.85:406:39First Quarter11Thu
12Fri7:216.48:526.81:442.92:170.95:386:40Waxing Gibbous12Fri
13Sat8:246.59:307.12:412.33:020.95:376:41Waxing Gibbous13Sat
14Sun9:206.610:047.43:311.73:411.05:366:42Waxing Gibbous14Sun
15Mon10:116.710:337.64:161.14:171.25:346:43Waxing Gibbous15Mon
16Tue10:596.810:597.74:570.64:521.55:336:44Waxing Gibbous16Tue
17Wed11:446.811:227.95:350.25:251.85:316:45Full Moon17Wed
18Thu12:286.86:12-0.15:592.25:306:46Full Moon18Thu
19Fri1:136.76:48-0.36:342.55:296:47Full Moon19Fri
20Sat12:108.22:006.67:24-0.57:122.85:276:47Waning Gibbous20Sat
21Sun12:418.32:496.58:03-0.67:533.15:266:48Waning Gibbous21Sun
22Mon1:188.33:426.38:45-0.58:403.35:256:49Waning Gibbous22Mon
23Tue2:038.14:406.29:35-0.49:373.55:236:50Waning Gibbous23Tue
24Wed2:597.85:426.310:32-0.310:453.45:226:51Third Quarter24Wed
25Thu4:077.46:436.511:37-0.15:216:52Third Quarter25Thu
26Fri5:297.07:366.912:033.212:430.05:206:53Third Quarter26Fri
27Sat6:556.98:237.41:192.51:430.15:186:54Third Quarter27Sat
28Sun8:126.99:058.02:251.62:380.35:176:55Waning Crescent28Sun
29Mon9:217.09:458.43:250.73:280.65:166:56Waning Crescent29Mon
30Tue10:257.110:238.84:20-0.24:161.05:156:56Waning Crescent30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414523)

Common Questions About Redwood City, CA Tides

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

Slack tide in Redwood City, CA is approximately 9:34 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 Redwood City, CA?

Redwood City, CA is currently in a neap phase. Tonight's moon is 47% 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 (47% 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