Tides Today & Tomorrow in Osterville, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Osterville, MA.
Next low tide (tomorrow) : in 3h 42m at 12:54 am (0.3 ft)
Next high tide (tomorrow) : 7:38 am (2.3 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 - Jul 2063

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:492.85:292.710:40-0.211:050.15:118:19First Quarter1Sun
2Mon5:482.76:242.711:34-0.15:118:19First Quarter2Mon
3Tue6:482.67:212.712:060.112:300.05:128:19First Quarter3Tue
4Wed7:512.58:182.71:070.11:260.25:138:19First Quarter4Wed
5Thu8:542.49:152.72:090.12:230.35:138:19Waxing Gibbous5Thu
6Fri9:582.310:132.73:120.13:210.35:148:18Waxing Gibbous6Fri
7Sat10:592.311:072.74:120.14:170.45:148:18Waxing Gibbous7Sat
8Sun11:532.311:572.75:080.15:090.45:158:18Full Moon8Sun
9Mon12:422.35:570.15:570.45:168:17Full Moon9Mon
10Tue12:432.71:262.36:420.16:420.45:178:17Full Moon10Tue
11Wed1:262.72:082.37:230.17:250.45:178:16Full Moon11Wed
12Thu2:092.62:482.38:030.18:070.45:188:16Waning Gibbous12Thu
13Fri2:502.63:262.38:410.18:490.45:198:15Waning Gibbous13Fri
14Sat3:302.64:042.49:190.29:310.45:208:15Waning Gibbous14Sat
15Sun4:102.54:422.49:570.210:140.45:208:14Waning Gibbous15Sun
16Mon4:522.45:222.410:370.310:590.45:218:13Waning Gibbous16Mon
17Tue5:362.36:042.411:180.311:470.45:228:13Third Quarter17Tue
18Wed6:242.36:482.412:020.45:238:12Third Quarter18Wed
19Thu7:142.27:342.412:370.412:490.45:248:11Third Quarter19Thu
20Fri8:072.18:242.51:300.41:390.55:258:11Waning Crescent20Fri
21Sat9:032.19:182.62:250.32:320.55:268:10Waning Crescent21Sat
22Sun10:012.210:132.73:220.23:280.45:268:09Waning Crescent22Sun
23Mon10:592.211:092.84:190.14:250.35:278:08Waning Crescent23Mon
24Tue11:532.35:140.05:200.25:288:07New Moon24Tue
25Wed12:032.912:462.56:06-0.16:140.15:298:06New Moon25Wed
26Thu12:563.01:382.66:56-0.37:070.05:308:05New Moon26Thu
27Fri1:503.02:302.77:46-0.38:01-0.15:318:04Waxing Crescent27Fri
28Sat2:443.03:212.88:36-0.38:55-0.15:328:03Waxing Crescent28Sat
29Sun3:383.04:122.89:25-0.39:49-0.15:338:02Waxing Crescent29Sun
30Mon4:332.95:032.810:16-0.210:46-0.15:348:01First Quarter30Mon
31Tue5:292.75:572.811:080.011:450.05:358:00First Quarter31Tue
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 4:16 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 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