Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Osterville, MA.
Next low tide : 1:21 pm (0.6 ft)
Next high tide : in 5h 37m at 7:57 am (2.1 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 5:56 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8447675
Common Questions About Tides

Osterville, MA Tides - Mar 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:462.68:292.31:020.21:470.06:175:31Waxing Gibbous1Wed
2Thu8:502.79:312.52:050.12:49-0.16:155:32Waxing Gibbous2Thu
3Fri9:522.810:292.63:070.03:47-0.26:145:33Waxing Gibbous3Fri
4Sat10:502.911:232.84:05-0.24:40-0.46:125:34Full Moon4Sat
5Sun11:443.05:00-0.35:31-0.46:105:35Full Moon5Sun
6Mon12:142.912:373.05:53-0.46:21-0.56:095:36Full Moon6Mon
7Tue1:043.01:293.06:45-0.57:09-0.46:075:38Waning Gibbous7Tue
8Wed1:533.02:202.97:35-0.47:57-0.36:065:39Waning Gibbous8Wed
9Thu2:412.93:112.78:26-0.38:46-0.16:045:40Waning Gibbous9Thu
10Fri3:302.84:022.59:17-0.29:360.06:025:41Waning Gibbous10Fri
11Sat4:212.74:572.410:110.010:290.26:015:42Third Quarter11Sat
12Sun5:152.55:552.211:080.111:250.35:595:43Third Quarter12Sun
13Mon6:132.46:552.112:070.25:575:44Third Quarter13Mon
14Tue7:132.37:562.112:230.41:070.35:565:46Third Quarter14Tue
15Wed8:132.38:552.11:220.52:070.35:545:47Waning Crescent15Wed
16Thu9:112.39:482.22:200.43:010.35:525:48Waning Crescent16Thu
17Fri10:022.410:332.33:130.43:470.25:515:49Waning Crescent17Fri
18Sat10:472.511:122.44:000.34:280.25:495:50Waning Crescent18Sat
19Sun11:272.511:492.54:420.25:050.15:475:51New Moon19Sun
20Mon12:052.55:220.15:420.15:455:52New Moon20Mon
21Tue12:242.512:432.66:010.06:190.05:445:53New Moon21Tue
22Wed12:592.61:212.66:400.06:560.05:425:54New Moon22Wed
23Thu1:352.61:592.57:20-0.17:340.05:405:56Waxing Crescent23Thu
24Fri2:122.62:402.58:01-0.18:150.15:395:57Waxing Crescent24Fri
25Sat2:522.73:232.48:440.08:580.15:375:58Waxing Crescent25Sat
26Sun3:362.74:102.49:320.09:470.25:355:59Waxing Crescent26Sun
27Mon4:252.65:042.310:250.010:420.25:346:00First Quarter27Mon
28Tue5:212.66:032.311:230.111:420.25:326:01First Quarter28Tue
29Wed6:232.67:062.412:240.15:306:02First Quarter29Wed
30Thu7:272.68:102.412:440.21:250.05:286:03Waxing Gibbous30Thu
31Fri8:332.79:122.61:480.12:27-0.15:276:04Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447675)

Common Questions About Osterville, MA Tides

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What time does the tide turn (slack tide) in Osterville, MA today?

Slack tide in Osterville, MA is approximately 10:39 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 Osterville, MA?

Osterville, MA is currently in a transitional phase. Tonight's moon is 65% 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 Osterville, MA 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 Osterville, MA?

Tide predictions for Osterville, MA 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 Osterville, MA?

Tide data for Osterville, MA is sourced from NOAA Station #8447675. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447675.

What is the moon phase in Osterville, MA tonight?

Tonight the moon over Osterville, MA is First Quarter (65% illuminated). This places Osterville, MA 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