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 4h 17m 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 - Jun 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:572.310:192.53:150.43:280.45:098:09Waning Crescent1Sat
2Sun10:472.311:032.64:050.34:150.45:088:09Waning Crescent2Sun
3Mon11:342.311:452.64:520.25:000.35:088:10Waning Crescent3Mon
4Tue12:172.45:350.15:430.35:088:11New Moon4Tue
5Wed12:252.712:592.46:170.06:250.35:078:12New Moon5Wed
6Thu1:052.71:412.46:590.07:070.25:078:12New Moon6Thu
7Fri1:462.82:242.57:42-0.17:510.25:078:13New Moon7Fri
8Sat2:302.83:082.58:26-0.18:370.25:078:13Waxing Crescent8Sat
9Sun3:152.83:542.69:11-0.19:240.15:068:14Waxing Crescent9Sun
10Mon4:022.84:412.69:58-0.110:150.15:068:15Waxing Crescent10Mon
11Tue4:532.85:332.610:48-0.111:100.15:068:15First Quarter11Tue
12Wed5:482.76:272.711:41-0.15:068:16First Quarter12Wed
13Thu6:472.77:232.712:090.112:370.05:068:16First Quarter13Thu
14Fri7:482.68:212.81:090.11:330.05:068:17First Quarter14Fri
15Sat8:502.69:202.82:100.02:310.05:068:17Waxing Gibbous15Sat
16Sun9:542.610:182.93:110.03:300.05:068:17Waxing Gibbous16Sun
17Mon10:552.611:142.94:12-0.14:270.05:068:18Waxing Gibbous17Mon
18Tue11:522.65:08-0.25:210.05:068:18Full Moon18Tue
19Wed12:063.012:462.66:01-0.26:120.05:068:18Full Moon19Wed
20Thu12:573.01:372.66:51-0.27:020.15:068:19Full Moon20Thu
21Fri1:462.92:272.67:40-0.27:510.15:078:19Full Moon21Fri
22Sat2:342.93:142.68:26-0.18:380.25:078:19Waning Gibbous22Sat
23Sun3:212.83:592.59:11-0.19:250.25:078:19Waning Gibbous23Sun
24Mon4:072.74:442.59:560.010:120.35:078:19Waning Gibbous24Mon
25Tue4:532.65:292.410:410.111:020.45:088:19Waning Gibbous25Tue
26Wed5:412.56:172.411:270.211:530.45:088:19Third Quarter26Wed
27Thu6:322.47:052.412:150.35:098:19Third Quarter27Thu
28Fri7:242.37:532.412:450.41:030.45:098:19Third Quarter28Fri
29Sat8:172.28:422.41:380.41:520.45:098:19Third Quarter29Sat
30Sun9:112.29:322.52:310.42:420.45:108:19Waning Crescent30Sun
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