Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Osterville, MA.
Next low tide (tomorrow) : 12:54 am (0.3 ft)
Next high tide : in 1h 57m at 7:05 pm (2.5 ft)
Sunset today : 8:10 pm
Sunrise tomorrow : 5:25 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8447675
Common Questions About Tides

Osterville, MA Tides - Apr 2063

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:332.63:022.48:220.08:330.26:237:06Waxing Crescent1Sun
2Mon3:092.63:422.49:030.09:130.26:227:07Waxing Crescent2Mon
3Tue3:502.64:262.39:470.09:560.36:207:09Waxing Crescent3Tue
4Wed4:342.65:162.210:360.110:460.36:187:10First Quarter4Wed
5Thu5:262.66:132.211:320.111:440.46:177:11First Quarter5Thu
6Fri6:252.67:152.212:320.16:157:12First Quarter6Fri
7Sat7:302.58:202.212:480.41:350.16:137:13First Quarter7Sat
8Sun8:382.69:252.41:530.32:380.16:127:14Waxing Gibbous8Sun
9Mon9:452.610:262.52:590.23:390.06:107:15Waxing Gibbous9Mon
10Tue10:482.711:202.74:020.14:35-0.16:087:16Waxing Gibbous10Tue
11Wed11:452.85:00-0.15:26-0.16:077:17Full Moon11Wed
12Thu12:102.812:382.85:53-0.36:15-0.26:057:18Full Moon12Thu
13Fri12:572.91:282.86:44-0.37:01-0.16:047:19Full Moon13Fri
14Sat1:433.02:172.77:32-0.37:47-0.16:027:21Full Moon14Sat
15Sun2:282.93:062.68:20-0.38:330.16:007:22Waning Gibbous15Sun
16Mon3:142.83:532.59:08-0.29:190.25:597:23Waning Gibbous16Mon
17Tue4:002.74:422.49:560.010:060.35:577:24Waning Gibbous17Tue
18Wed4:482.65:342.210:460.110:570.55:567:25Third Quarter18Wed
19Thu5:402.56:292.111:400.311:530.65:547:26Third Quarter19Thu
20Fri6:372.37:272.112:370.45:537:27Third Quarter20Fri
21Sat7:362.38:242.112:510.61:330.45:517:28Third Quarter21Sat
22Sun8:362.39:182.21:490.62:280.45:507:29Third Quarter22Sun
23Mon9:332.310:082.22:470.53:190.45:487:30Waning Crescent23Mon
24Tue10:262.310:532.33:410.54:060.45:477:31Waning Crescent24Tue
25Wed11:132.411:322.54:300.34:480.35:467:33Waning Crescent25Wed
26Thu11:552.45:130.25:270.35:447:34Waning Crescent26Thu
27Fri12:092.612:362.45:550.16:050.25:437:35New Moon27Fri
28Sat12:452.61:162.46:350.06:440.25:417:36New Moon28Sat
29Sun1:222.71:572.47:160.07:240.25:407:37New Moon29Sun
30Mon2:012.82:392.47:58-0.18:060.25:397:38Waxing Crescent30Mon
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 9:59 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 52% 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 (52% 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