Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Osterville, MA.
Next low tide (tomorrow) : in 3h 29m at 1:13 am (0.4 ft)
Next high tide (tomorrow) : 7:57 am (2.1 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 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:422.72:132.47:290.17:390.25:358:00Full Moon1Tue
2Wed2:212.62:502.58:060.18:190.25:367:59Waning Gibbous2Wed
3Thu3:002.63:272.58:430.18:590.25:377:58Waning Gibbous3Thu
4Fri3:392.54:042.59:210.19:400.35:387:57Waning Gibbous4Fri
5Sat4:192.54:432.510:000.210:230.35:397:55Waning Gibbous5Sat
6Sun5:012.45:242.510:410.311:090.35:407:54Third Quarter6Sun
7Mon5:462.36:082.511:250.311:590.35:417:53Third Quarter7Mon
8Tue6:352.36:572.512:130.35:427:52Third Quarter8Tue
9Wed7:282.37:482.612:520.31:050.45:437:50Third Quarter9Wed
10Thu8:252.38:442.61:470.32:000.35:447:49Waning Crescent10Thu
11Fri9:232.39:412.72:450.22:580.35:457:48Waning Crescent11Fri
12Sat10:222.410:392.93:430.03:560.15:467:47Waning Crescent12Sat
13Sun11:182.611:353.04:39-0.14:530.05:477:45New Moon13Sun
14Mon12:122.75:32-0.25:48-0.15:487:44New Moon14Mon
15Tue12:303.11:042.86:24-0.46:42-0.35:497:42New Moon15Tue
16Wed1:243.11:572.97:14-0.47:35-0.35:507:41New Moon16Wed
17Thu2:183.12:493.08:05-0.48:28-0.35:517:40Waxing Crescent17Thu
18Fri3:123.03:403.08:55-0.49:22-0.35:527:38Waxing Crescent18Fri
19Sat4:062.94:333.09:46-0.210:17-0.25:537:37Waxing Crescent19Sat
20Sun5:022.85:272.910:39-0.111:14-0.15:547:35First Quarter20Sun
21Mon6:002.66:242.811:340.15:557:34First Quarter21Mon
22Tue7:022.47:242.712:150.012:320.25:567:32First Quarter22Tue
23Wed8:042.38:242.61:160.21:310.35:577:31First Quarter23Wed
24Thu9:082.39:252.52:190.22:310.45:587:29Waxing Gibbous24Thu
25Fri10:082.310:232.53:200.23:300.45:597:27Waxing Gibbous25Fri
26Sat11:022.311:142.64:160.24:240.46:007:26Waxing Gibbous26Sat
27Sun11:482.411:582.65:040.25:110.36:017:24Waxing Gibbous27Sun
28Mon12:282.45:450.25:540.36:027:23Full Moon28Mon
29Tue12:392.61:062.56:220.16:340.26:037:21Full Moon29Tue
30Wed1:172.61:422.56:590.17:130.26:047:19Full Moon30Wed
31Thu1:552.62:172.57:350.17:520.26:057:18Full Moon31Thu
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 4:35 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 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