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 3h 40m 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 - Mar 2063

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:012.41:132.56:320.16:530.16:155:31New Moon1Thu
2Fri1:342.51:492.57:090.17:270.16:145:33Waxing Crescent2Fri
3Sat2:072.52:262.47:470.18:030.16:125:34Waxing Crescent3Sat
4Sun2:412.53:052.48:270.18:400.26:105:35Waxing Crescent4Sun
5Mon3:182.53:472.39:090.19:210.26:095:36Waxing Crescent5Mon
6Tue4:002.54:342.29:570.110:080.36:075:37First Quarter6Tue
7Wed4:482.55:292.110:510.211:020.46:055:38First Quarter7Wed
8Thu5:442.56:302.111:510.26:045:40First Quarter8Thu
9Fri6:472.57:362.112:030.412:550.26:025:41First Quarter9Fri
10Sat7:532.58:432.21:080.32:000.16:015:42Waxing Gibbous10Sat
11Sun10:002.610:462.43:140.24:020.06:596:43Waxing Gibbous11Sun
12Mon11:032.811:412.64:170.14:58-0.26:576:44Waxing Gibbous12Mon
13Tue12:002.95:15-0.15:50-0.36:566:45Full Moon13Tue
14Wed12:332.712:542.96:09-0.36:39-0.36:546:46Full Moon14Wed
15Thu1:212.91:462.97:01-0.47:26-0.36:526:48Full Moon15Thu
16Fri2:092.92:362.97:52-0.48:13-0.36:506:49Waning Gibbous16Fri
17Sat2:552.93:262.78:41-0.48:59-0.16:496:50Waning Gibbous17Sat
18Sun3:422.94:152.69:31-0.39:460.06:476:51Waning Gibbous18Sun
19Mon4:292.85:072.410:21-0.110:350.26:456:52Waning Gibbous19Mon
20Tue5:192.66:022.211:150.111:280.46:446:53Third Quarter20Tue
21Wed6:142.57:012.112:140.26:426:54Third Quarter21Wed
22Thu7:132.38:042.012:260.51:150.36:406:55Third Quarter22Thu
23Fri8:162.39:072.01:260.62:170.46:396:56Third Quarter23Fri
24Sat9:192.310:062.12:270.63:180.46:376:58Waning Crescent24Sat
25Sun10:182.310:572.23:270.54:110.36:356:59Waning Crescent25Sun
26Mon11:082.411:392.34:210.44:550.36:347:00Waning Crescent26Mon
27Tue11:512.45:060.35:330.26:327:01Waning Crescent27Tue
28Wed12:162.412:312.55:470.26:080.26:307:02New Moon28Wed
29Thu12:502.51:082.56:260.16:430.16:287:03New Moon29Thu
30Fri1:242.51:452.57:040.17:190.16:277:04New Moon30Fri
31Sat1:582.62:232.57:420.07:550.16:257:05New Moon31Sat
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