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 1h 31m 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 - Jan 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon4:422.75:032.710:22-0.110:51-0.27:084:21Third Quarter1Mon
2Tue5:392.76:052.511:240.011:49-0.17:084:22Third Quarter2Tue
3Wed6:392.77:092.412:260.07:084:23Third Quarter3Wed
4Thu7:402.78:152.412:480.01:300.07:084:23Waning Crescent4Thu
5Fri8:412.79:202.41:480.12:330.07:084:24Waning Crescent5Fri
6Sat9:392.710:192.42:470.13:32-0.17:084:25Waning Crescent6Sat
7Sun10:332.711:112.43:430.14:26-0.17:084:26New Moon7Sun
8Mon11:212.711:592.44:330.15:13-0.17:084:27New Moon8Mon
9Tue12:062.75:200.15:57-0.17:084:28New Moon9Tue
10Wed12:422.412:492.76:050.16:39-0.17:084:29New Moon10Wed
11Thu1:242.41:302.76:470.17:19-0.17:074:30Waxing Crescent11Thu
12Fri2:042.42:112.67:290.17:580.07:074:31Waxing Crescent12Fri
13Sat2:432.42:512.58:110.28:380.07:074:33Waxing Crescent13Sat
14Sun3:222.43:332.48:540.29:190.17:064:34Waxing Crescent14Sun
15Mon4:032.34:182.39:400.310:020.27:064:35First Quarter15Mon
16Tue4:472.35:052.210:280.310:480.37:064:36First Quarter16Tue
17Wed5:342.35:562.211:190.411:360.37:054:37First Quarter17Wed
18Thu6:232.36:502.112:120.47:054:38First Quarter18Thu
19Fri7:132.37:452.112:260.41:060.37:044:39First Quarter19Fri
20Sat8:062.48:412.11:190.32:010.27:044:41Waxing Gibbous20Sat
21Sun8:592.59:362.22:130.32:560.17:034:42Waxing Gibbous21Sun
22Mon9:512.610:282.33:060.23:480.07:024:43Waxing Gibbous22Mon
23Tue10:412.811:172.53:580.14:38-0.27:024:44Full Moon23Tue
24Wed11:302.94:48-0.15:26-0.37:014:45Full Moon24Wed
25Thu12:062.612:193.05:38-0.26:14-0.47:004:47Full Moon25Thu
26Fri12:542.71:103.06:29-0.37:02-0.56:594:48Waning Gibbous26Fri
27Sat1:442.82:013.07:20-0.37:51-0.56:594:49Waning Gibbous27Sat
28Sun2:342.82:542.98:12-0.38:41-0.46:584:50Waning Gibbous28Sun
29Mon3:252.83:482.89:06-0.39:33-0.36:574:52Waning Gibbous29Mon
30Tue4:192.84:452.710:03-0.210:28-0.26:564:53Third Quarter30Tue
31Wed5:162.75:472.511:03-0.111:260.06:554:54Third Quarter31Wed
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