Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Osterville, MA.
Next low tide : in 1h 30m at 10:00 am (0.1 ft)
Next high tide : 4:46 pm (2.7 ft)
Sunset today : 7:38 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8447675
Common Questions About Tides

Osterville, MA Tides - Nov 1948

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:573.05:15-0.15:48-0.36:134:36New Moon1Mon
2Tue12:312.812:443.06:02-0.16:37-0.36:144:35New Moon2Tue
3Wed1:222.71:313.06:500.07:26-0.36:164:34Waxing Crescent3Wed
4Thu2:122.62:192.97:370.18:16-0.16:174:33Waxing Crescent4Thu
5Fri3:032.53:082.78:260.39:060.06:184:31Waxing Crescent5Fri
6Sat3:542.33:592.69:160.49:590.26:194:30First Quarter6Sat
7Sun4:492.24:542.510:110.510:550.36:214:29First Quarter7Sun
8Mon5:462.25:532.411:080.611:510.46:224:28First Quarter8Mon
9Tue6:432.26:522.312:070.66:234:27First Quarter9Tue
10Wed7:382.27:492.312:460.41:050.66:244:26First Quarter10Wed
11Thu8:292.38:442.31:370.42:010.56:254:25Waxing Gibbous11Thu
12Fri9:162.49:342.32:260.42:520.46:274:24Waxing Gibbous12Fri
13Sat9:572.410:192.43:100.33:380.36:284:23Waxing Gibbous13Sat
14Sun10:362.511:012.43:510.34:200.26:294:22Waxing Gibbous14Sun
15Mon11:122.611:402.44:300.35:010.16:304:21Full Moon15Mon
16Tue11:482.75:080.25:410.06:324:20Full Moon16Tue
17Wed12:202.412:252.75:470.26:220.06:334:20Full Moon17Wed
18Thu1:022.41:052.86:280.27:04-0.16:344:19Waning Gibbous18Thu
19Fri1:452.41:482.87:100.37:49-0.16:354:18Waning Gibbous19Fri
20Sat2:302.32:342.77:560.38:360.06:364:17Waning Gibbous20Sat
21Sun3:192.33:242.78:450.39:280.06:374:17Waning Gibbous21Sun
22Mon4:122.34:202.69:400.310:240.06:394:16Third Quarter22Mon
23Tue5:102.35:212.610:410.311:220.16:404:15Third Quarter23Tue
24Wed6:102.46:262.511:450.36:414:15Third Quarter24Wed
25Thu7:112.57:312.512:210.112:490.26:424:14Waning Crescent25Thu
26Fri8:102.68:352.51:200.11:520.16:434:14Waning Crescent26Fri
27Sat9:072.79:372.62:170.02:530.06:444:13Waning Crescent27Sat
28Sun10:002.810:342.63:120.03:50-0.16:454:13Waning Crescent28Sun
29Mon10:492.911:262.64:040.04:43-0.26:474:13New Moon29Mon
30Tue11:372.94:540.05:32-0.36:484:12New Moon30Tue
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 1:23 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 transitional phase. Tonight's moon is 27% 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 Waxing Crescent (27% 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