Tides Today & Tomorrow in Redwood City, CA

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Redwood City, CA.
Next low tide : 1:17 pm (3.1 ft)
Next high tide : in 1h 18m at 8:07 am (5.7 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 6:05 am
Moon phase : First Quarter (63% illuminated)
Tide Station Location : Station #9414523
Common Questions About Tides

Redwood City, CA Tides - Aug 1981

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:199.02:587.88:21-1.08:272.46:138:17New Moon1Sat
2Sun2:068.63:377.89:00-0.69:152.36:138:16Waxing Crescent2Sun
3Mon2:528.24:137.89:37-0.110:022.36:148:15Waxing Crescent3Mon
4Tue3:407.64:487.810:120.510:512.36:158:14Waxing Crescent4Tue
5Wed4:317.05:237.710:481.211:432.36:168:13First Quarter5Wed
6Thu5:296.56:017.711:281.86:178:11First Quarter6Thu
7Fri6:366.16:457.712:432.212:142.56:188:10First Quarter7Fri
8Sat7:515.97:337.71:472.01:113.06:198:09First Quarter8Sat
9Sun9:036.08:237.82:501.62:143.46:198:08First Quarter9Sun
10Mon10:086.29:137.93:471.23:163.56:208:07Waxing Gibbous10Mon
11Tue11:056.610:028.14:370.74:123.56:218:06Waxing Gibbous11Tue
12Wed11:546.910:498.35:220.35:043.36:228:05Waxing Gibbous12Wed
13Thu12:377.16:030.05:523.16:238:03Waxing Gibbous13Thu
14Fri1:167.36:41-0.36:372.86:248:02Full Moon14Fri
15Sat12:168.61:527.57:17-0.57:202.56:248:01Full Moon15Sat
16Sun12:598.72:257.77:53-0.68:032.26:258:00Full Moon16Sun
17Mon1:428.62:577.88:30-0.58:472.06:267:58Waning Gibbous17Mon
18Tue2:288.43:308.09:07-0.29:341.76:277:57Waning Gibbous18Tue
19Wed3:198.04:058.29:470.310:251.56:287:56Waning Gibbous19Wed
20Thu4:167.54:458.410:300.911:241.46:297:54Waning Gibbous20Thu
21Fri5:246.95:328.511:191.66:307:53Third Quarter21Fri
22Sat6:456.46:288.512:321.212:192.46:307:52Third Quarter22Sat
23Sun8:106.37:328.51:460.91:292.96:317:50Third Quarter23Sun
24Mon9:286.58:388.62:580.52:413.16:327:49Waning Crescent24Mon
25Tue10:366.99:418.84:020.03:493.06:337:48Waning Crescent25Tue
26Wed11:337.310:408.84:59-0.44:502.76:347:46Waning Crescent26Wed
27Thu12:217.65:49-0.65:462.46:357:45Waning Crescent27Thu
28Fri1:047.86:34-0.76:362.16:357:43New Moon28Fri
29Sat12:238.81:437.97:15-0.57:231.86:367:42New Moon29Sat
30Sun1:098.62:188.07:52-0.28:071.76:377:41New Moon30Sun
31Mon1:548.32:507.98:270.28:501.66:387:39Waxing Crescent31Mon
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 10:42 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 transitional phase. Tonight's moon is 63% 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 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 (63% illuminated). This places Redwood City, 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