Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 4h 36m at 8:21 am (0.8 ft)
Next high tide : 3:15 pm (3.4 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:56 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Jan 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:293.72:543.39:210.39:150.07:094:21First Quarter1Sun
2Mon3:313.83:583.310:510.210:17-0.17:104:22Waxing Gibbous2Mon
3Tue4:354.05:043.311:560.011:14-0.37:104:23Waxing Gibbous3Tue
4Wed5:384.36:043.512:51-0.17:104:24Waxing Gibbous4Wed
5Thu6:344.56:593.712:07-0.41:43-0.27:104:25Full Moon5Thu
6Fri7:274.67:503.812:58-0.42:35-0.37:104:26Full Moon6Fri
7Sat8:174.58:403.91:49-0.53:23-0.37:104:27Full Moon7Sat
8Sun9:064.49:283.82:40-0.44:03-0.27:094:28Full Moon8Sun
9Mon9:534.210:173.73:29-0.34:38-0.27:094:29Waning Gibbous9Mon
10Tue10:403.911:063.54:16-0.25:090.07:094:30Waning Gibbous10Tue
11Wed11:273.511:553.45:000.05:420.17:094:31Waning Gibbous11Wed
12Thu12:143.25:450.26:180.27:094:32Waning Gibbous12Thu
13Fri12:453.21:002.96:350.47:000.37:084:33Third Quarter13Fri
14Sat1:333.11:452.77:360.67:500.47:084:34Third Quarter14Sat
15Sun2:203.02:302.58:520.78:470.47:074:35Third Quarter15Sun
16Mon3:092.93:212.410:080.69:440.47:074:37Third Quarter16Mon
17Tue4:032.94:202.311:070.510:390.37:074:38Waning Crescent17Tue
18Wed5:003.05:182.511:560.411:290.27:064:39Waning Crescent18Wed
19Thu5:493.26:072.712:400.27:064:40Waning Crescent19Thu
20Fri6:323.46:512.912:150.01:230.07:054:41Waning Crescent20Fri
21Sat7:133.67:323.112:59-0.12:05-0.17:044:42New Moon21Sat
22Sun7:533.88:153.31:43-0.32:46-0.37:044:44New Moon22Sun
23Mon8:354.08:583.52:27-0.43:24-0.47:034:45New Moon23Mon
24Tue9:184.09:433.63:12-0.54:00-0.57:024:46Waxing Crescent24Tue
25Wed10:044.010:313.63:57-0.54:35-0.57:024:47Waxing Crescent25Wed
26Thu10:523.911:213.74:41-0.45:12-0.57:014:49Waxing Crescent26Thu
27Fri11:443.75:28-0.35:52-0.47:004:50Waxing Crescent27Fri
28Sat12:153.712:383.56:220.06:39-0.36:594:51First Quarter28Sat
29Sun1:103.71:353.37:300.27:34-0.16:584:52First Quarter29Sun
30Mon2:083.72:343.19:160.38:390.06:574:54First Quarter30Mon
31Tue3:103.73:393.010:560.29:500.06:564:55Waxing Gibbous31Tue
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 11:48 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 Onset Beach, MA?

Onset Beach, 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 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 First Quarter (55% illuminated). This places Onset Beach, 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