Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Osterville, MA.
Next low tide (tomorrow) : 1:13 am (0.4 ft)
Next high tide : in 5h 20m at 7:15 pm (2.4 ft)
Sunset today : 7:34 pm
Sunrise tomorrow : 5:55 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8447675
Common Questions About Tides

Osterville, MA Tides - Aug 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:082.311:202.74:270.14:370.35:357:59Waning Crescent1Thu
2Fri11:562.45:160.05:270.15:367:58New Moon2Fri
3Sat12:082.912:432.66:04-0.16:160.05:377:57New Moon3Sat
4Sun12:562.91:312.76:50-0.27:05-0.15:387:56New Moon4Sun
5Mon1:463.02:192.87:38-0.37:55-0.25:397:55Waxing Crescent5Mon
6Tue2:363.03:082.98:25-0.38:47-0.25:407:53Waxing Crescent6Tue
7Wed3:283.03:582.99:14-0.39:39-0.25:417:52Waxing Crescent7Wed
8Thu4:202.94:502.910:05-0.210:34-0.25:427:51Waxing Crescent8Thu
9Fri5:162.85:442.910:58-0.111:33-0.15:437:49First Quarter9Fri
10Sat6:152.66:432.811:540.05:447:48First Quarter10Sat
11Sun7:182.57:432.812:340.012:530.15:457:47First Quarter11Sun
12Mon8:222.48:452.71:360.01:530.25:477:45Waxing Gibbous12Mon
13Tue9:282.49:482.72:400.12:550.25:487:44Waxing Gibbous13Tue
14Wed10:322.410:472.73:420.13:550.25:497:43Waxing Gibbous14Wed
15Thu11:282.411:412.74:400.14:510.25:507:41Waxing Gibbous15Thu
16Fri12:172.55:310.05:410.25:517:40Full Moon16Fri
17Sat12:282.71:012.56:160.06:260.25:527:38Full Moon17Sat
18Sun1:112.71:412.56:570.07:090.25:537:37Full Moon18Sun
19Mon1:522.72:202.57:360.07:500.25:547:35Full Moon19Mon
20Tue2:322.62:572.58:140.18:310.25:557:34Waning Gibbous20Tue
21Wed3:122.63:342.58:510.19:120.25:567:32Waning Gibbous21Wed
22Thu3:522.54:132.59:300.29:530.25:577:31Waning Gibbous22Thu
23Fri4:332.44:532.510:100.310:380.35:587:29Waning Gibbous23Fri
24Sat5:172.35:362.510:530.311:250.35:597:28Third Quarter24Sat
25Sun6:042.36:232.411:400.46:007:26Third Quarter25Sun
26Mon6:552.27:132.412:160.412:290.46:017:25Third Quarter26Mon
27Tue7:492.28:062.51:090.41:220.56:027:23Third Quarter27Tue
28Wed8:442.29:002.52:030.32:160.46:037:21Waning Crescent28Wed
29Thu9:402.39:562.62:580.23:120.36:047:20Waning Crescent29Thu
30Fri10:342.410:502.83:530.14:080.26:057:18Waning Crescent30Fri
31Sat11:262.611:422.94:450.05:010.06:067:17New Moon31Sat
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 10:14 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 Osterville, MA?

Osterville, MA is currently in a neap phase. Tonight's moon is 55% 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 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 (55% illuminated). This places Osterville, MA 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