Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 1h 35m at 2:58 pm (-0.2 ft)
Next high tide : 9:07 pm (4.8 ft)
Sunset today : 7:47 pm
Sunrise tomorrow : 5:48 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Jun 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:083.61:493.47:260.37:400.55:108:10First Quarter1Sun
2Mon2:023.62:423.68:190.38:470.55:098:11First Quarter2Mon
3Tue2:573.63:373.89:210.310:040.55:098:11First Quarter3Tue
4Wed3:563.64:364.110:260.211:220.35:088:12Waxing Gibbous4Wed
5Thu5:003.65:384.411:260.05:088:13Waxing Gibbous5Thu
6Fri6:053.86:394.712:280.112:22-0.25:088:13Waxing Gibbous6Fri
7Sat7:054.07:355.01:26-0.11:14-0.35:088:14Waxing Gibbous7Sat
8Sun8:014.28:295.22:21-0.32:05-0.45:078:15Full Moon8Sun
9Mon8:554.49:215.23:16-0.42:58-0.45:078:15Full Moon9Mon
10Tue9:474.410:125.14:11-0.43:51-0.35:078:16Full Moon10Tue
11Wed10:394.411:044.95:01-0.34:44-0.25:078:16Waning Gibbous11Wed
12Thu11:324.311:564.55:46-0.15:340.05:078:17Waning Gibbous12Thu
13Fri12:264.16:280.16:230.35:078:17Waning Gibbous13Fri
14Sat12:494.21:203.97:100.37:150.65:078:18Waning Gibbous14Sat
15Sun1:423.82:143.87:560.58:200.85:078:18Third Quarter15Sun
16Mon2:343.53:063.68:480.69:530.95:078:19Third Quarter16Mon
17Tue3:243.33:593.59:430.711:080.95:078:19Third Quarter17Tue
18Wed4:163.14:533.510:340.611:580.85:078:19Third Quarter18Wed
19Thu5:123.05:483.511:210.65:078:20Waning Crescent19Thu
20Fri6:073.06:373.612:400.712:060.55:078:20Waning Crescent20Fri
21Sat6:553.17:203.71:190.612:500.45:078:20Waning Crescent21Sat
22Sun7:383.27:583.81:590.41:320.35:088:20Waning Crescent22Sun
23Mon8:183.38:343.92:400.32:140.25:088:21New Moon23Mon
24Tue8:573.49:104.03:220.22:570.15:088:21New Moon24Tue
25Wed9:373.59:484.04:030.13:390.15:088:21New Moon25Wed
26Thu10:183.610:284.04:400.14:220.15:098:21New Moon26Thu
27Fri11:013.611:114.05:140.15:040.15:098:21Waxing Crescent27Fri
28Sat11:473.711:583.95:470.15:460.25:108:21Waxing Crescent28Sat
29Sun12:363.76:220.16:310.35:108:21Waxing Crescent29Sun
30Mon12:493.81:283.87:030.17:230.45:108:21First Quarter30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447277)

Common Questions About Onset Beach, MA Tides

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What time does the tide turn (slack tide) in Onset Beach, MA today?

Slack tide in Onset Beach, MA is approximately 6:02 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 Onset Beach, MA?

Onset Beach, MA is currently in a spring phase. Tonight's moon is 0% 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 maximum.

What datum are Onset Beach, 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 Onset Beach, MA?

Tide predictions for Onset Beach, 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 Onset Beach, MA?

Tide data for Onset Beach, MA is sourced from NOAA Station #8447277. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447277.

What is the moon phase in Onset Beach, MA tonight?

Tonight the moon over Onset Beach, MA is New Moon (0% illuminated). This places Onset Beach, MA in a spring tide cycle, so tidal ranges are near their weekly maximum 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