Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Osterville, MA.
Next low tide : in 1h 04m at 10:29 pm (0.1 ft)
Next high tide (tomorrow) : 5:13 am (2.5 ft)
Sunset today : 7:38 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8447675
Common Questions About Tides

Osterville, MA Tides - Nov 1947

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:372.61:462.97:080.17:44-0.26:124:37Waning Gibbous1Sat
2Sun2:252.52:332.97:550.18:34-0.26:144:36Waning Gibbous2Sun
3Mon3:152.53:252.88:450.29:28-0.16:154:35Waning Gibbous3Mon
4Tue4:112.44:222.89:410.310:270.06:164:33Third Quarter4Tue
5Wed5:132.45:262.710:430.311:290.16:174:32Third Quarter5Wed
6Thu6:182.46:332.611:490.36:184:31Third Quarter6Thu
7Fri7:232.47:412.612:320.112:550.36:204:30Waning Crescent7Fri
8Sat8:262.58:482.61:340.12:000.26:214:29Waning Crescent8Sat
9Sun9:252.69:492.62:330.13:020.16:224:28Waning Crescent9Sun
10Mon10:162.710:432.63:270.03:580.06:234:27Waning Crescent10Mon
11Tue11:032.811:322.64:170.04:48-0.16:254:26New Moon11Tue
12Wed11:462.85:020.15:34-0.16:264:25New Moon12Wed
13Thu12:192.612:272.85:450.16:19-0.16:274:24New Moon13Thu
14Fri1:032.51:082.86:280.27:02-0.16:284:23New Moon14Fri
15Sat1:472.41:492.77:100.37:450.06:294:22Waxing Crescent15Sat
16Sun2:302.32:322.67:520.48:280.16:314:21Waxing Crescent16Sun
17Mon3:142.33:162.58:360.49:140.26:324:20Waxing Crescent17Mon
18Tue4:012.24:032.49:230.510:020.36:334:19Waxing Crescent18Tue
19Wed4:502.14:542.410:130.610:520.36:344:19First Quarter19Wed
20Thu5:432.15:492.311:070.611:440.46:354:18First Quarter20Thu
21Fri6:352.16:432.312:030.66:374:17First Quarter21Fri
22Sat7:252.27:382.312:350.412:570.56:384:17First Quarter22Sat
23Sun8:142.38:312.31:240.31:500.46:394:16Waxing Gibbous23Sun
24Mon9:002.49:212.42:120.32:420.36:404:15Waxing Gibbous24Mon
25Tue9:442.610:092.42:580.23:300.16:414:15Waxing Gibbous25Tue
26Wed10:252.710:552.53:430.24:170.06:424:14Full Moon26Wed
27Thu11:072.811:412.54:270.15:02-0.26:444:14Full Moon27Thu
28Fri11:502.95:120.05:49-0.36:454:13Full Moon28Fri
29Sat12:282.612:363.05:580.06:37-0.36:464:13Full Moon29Sat
30Sun1:172.61:253.06:460.07:27-0.36:474:13Waning Gibbous30Sun
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 1:51 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 27% 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 Waxing Crescent (27% 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