Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Osterville, MA.
Next low tide (tomorrow) : in 4h 38m at 2:11 am (0.4 ft)
Next high tide (tomorrow) : 8:57 am (2.0 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 5:56 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8447675
Common Questions About Tides

Osterville, MA Tides - May 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:472.55:272.210:420.210:550.55:387:38Waning Gibbous1Sat
2Sun5:332.46:152.211:290.311:460.55:377:40Third Quarter2Sun
3Mon6:242.47:052.312:200.35:357:41Third Quarter3Mon
4Tue7:182.47:572.312:400.51:110.35:347:42Third Quarter4Tue
5Wed8:142.48:492.41:360.42:040.25:337:43Waning Crescent5Wed
6Thu9:112.59:412.62:320.32:570.25:317:44Waning Crescent6Thu
7Fri10:082.610:332.83:290.13:500.15:307:45Waning Crescent7Fri
8Sat11:042.611:232.94:25-0.14:430.05:297:46Waning Crescent8Sat
9Sun11:572.75:18-0.35:34-0.15:287:47New Moon9Sun
10Mon12:133.112:502.86:10-0.46:24-0.25:277:48New Moon10Mon
11Tue1:043.21:442.87:02-0.57:16-0.25:267:49New Moon11Tue
12Wed1:573.22:392.87:55-0.58:09-0.15:257:50Waxing Crescent12Wed
13Thu2:513.13:342.78:48-0.49:03-0.15:247:51Waxing Crescent13Thu
14Fri3:463.04:302.79:42-0.39:580.05:237:52Waxing Crescent14Fri
15Sat4:432.95:292.610:38-0.210:570.15:227:53First Quarter15Sat
16Sun5:432.76:292.511:370.011:590.25:217:54First Quarter16Sun
17Mon6:472.67:302.512:360.15:207:55First Quarter17Mon
18Tue7:502.58:292.51:030.31:340.25:197:56First Quarter18Tue
19Wed8:532.49:252.52:050.32:310.35:187:57Waxing Gibbous19Wed
20Thu9:542.410:172.53:060.33:250.35:177:58Waxing Gibbous20Thu
21Fri10:492.311:042.64:030.24:150.35:167:59Waxing Gibbous21Fri
22Sat11:372.311:462.64:530.25:000.45:158:00Waxing Gibbous22Sat
23Sun12:202.45:360.15:410.45:158:01Full Moon23Sun
24Mon12:252.61:002.46:160.16:200.35:148:02Full Moon24Mon
25Tue1:022.61:392.46:550.17:000.45:138:03Full Moon25Tue
26Wed1:412.62:192.37:340.17:390.45:128:04Full Moon26Wed
27Thu2:192.62:582.38:130.18:190.45:128:04Waning Gibbous27Thu
28Fri2:582.63:372.38:520.19:000.45:118:05Waning Gibbous28Fri
29Sat3:392.64:172.39:320.19:430.45:118:06Waning Gibbous29Sat
30Sun4:202.64:592.310:140.110:280.45:108:07Waning Gibbous30Sun
31Mon5:052.55:432.410:580.211:170.45:108:08Third Quarter31Mon
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 5:34 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 65% 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 First Quarter (65% 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