Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Osterville, MA.
Next low tide : in 2h 35m at 12:27 pm (0.5 ft)
Next high tide : 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 - Apr 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:022.53:322.38:500.19:040.35:246:06Waxing Crescent1Tue
2Wed3:422.54:162.39:340.29:480.45:226:07Waxing Crescent2Wed
3Thu4:272.45:032.210:210.210:360.45:216:08First Quarter3Thu
4Fri5:152.45:552.211:120.311:290.45:196:09First Quarter4Fri
5Sat6:092.46:502.212:060.35:176:10First Quarter5Sat
6Sun7:052.47:452.312:240.41:020.25:166:11First Quarter6Sun
7Mon8:032.58:412.41:210.31:570.25:146:12Waxing Gibbous7Mon
8Tue9:012.69:342.52:190.22:520.05:126:14Waxing Gibbous8Tue
9Wed9:562.710:252.73:150.03:44-0.15:116:15Waxing Gibbous9Wed
10Thu10:492.811:142.94:08-0.24:34-0.25:096:16Full Moon10Thu
11Fri11:412.95:00-0.45:23-0.35:086:17Full Moon11Fri
12Sat12:023.012:323.05:51-0.56:12-0.45:066:18Full Moon12Sat
13Sun12:523.11:252.96:42-0.57:02-0.35:046:19Waning Gibbous13Sun
14Mon1:433.12:182.97:34-0.57:53-0.35:036:20Waning Gibbous14Mon
15Tue2:353.13:122.88:27-0.48:46-0.15:016:21Waning Gibbous15Tue
16Wed3:283.04:092.79:22-0.39:410.05:006:22Waning Gibbous16Wed
17Thu4:262.85:102.510:20-0.110:410.14:586:23Third Quarter17Thu
18Fri5:272.76:142.411:220.011:440.34:566:24Third Quarter18Fri
19Sat6:322.67:192.412:240.14:556:25Third Quarter19Sat
20Sun7:382.58:222.412:480.31:260.24:536:27Waning Crescent20Sun
21Mon8:432.49:202.41:520.32:260.24:526:28Waning Crescent21Mon
22Tue9:412.410:102.52:520.33:200.24:506:29Waning Crescent22Tue
23Wed10:312.510:522.53:450.24:050.24:496:30Waning Crescent23Wed
24Thu11:142.511:302.64:300.14:450.24:486:31New Moon24Thu
25Fri11:542.55:110.15:230.24:466:32New Moon25Fri
26Sat12:062.612:322.55:490.06:000.24:456:33New Moon26Sat
27Sun12:422.62:102.57:270.07:370.25:437:34New Moon27Sun
28Mon2:182.62:482.48:050.08:150.35:427:35Waxing Crescent28Mon
29Tue2:542.63:272.48:440.18:540.35:407:36Waxing Crescent29Tue
30Wed3:332.64:072.49:240.19:350.35:397:37Waxing Crescent30Wed
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 3:51 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