Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 5h 11m at 6:12 pm (0.3 ft)
Next high tide (tomorrow) : 12:14 am (3.8 ft)
Sunset today : 7:41 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Jan 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:113.91:343.57:320.37:39-0.17:094:22First Quarter1Wed
2Thu2:083.92:333.39:270.48:440.07:104:22First Quarter2Thu
3Fri3:103.93:363.210:560.39:530.17:104:23Waxing Gibbous3Fri
4Sat4:153.94:423.211:580.210:570.07:104:24Waxing Gibbous4Sat
5Sun5:204.05:453.312:500.17:104:25Waxing Gibbous5Sun
6Mon6:184.16:393.51:370.07:104:26Waxing Gibbous6Mon
7Tue7:104.27:293.612:42-0.12:21-0.17:104:27Full Moon7Tue
8Wed7:574.28:163.71:28-0.22:59-0.17:094:28Full Moon8Wed
9Thu8:414.19:003.72:15-0.23:30-0.17:094:29Full Moon9Thu
10Fri9:233.99:443.63:00-0.23:57-0.17:094:30Waning Gibbous10Fri
11Sat10:033.710:263.53:43-0.24:25-0.17:094:31Waning Gibbous11Sat
12Sun10:423.411:093.34:24-0.14:55-0.17:084:32Waning Gibbous12Sun
13Mon11:223.111:513.25:050.15:280.07:084:33Waning Gibbous13Mon
14Tue12:012.95:480.26:030.17:084:34Waning Gibbous14Tue
15Wed12:343.012:422.66:350.46:440.37:074:35Third Quarter15Wed
16Thu1:152.91:242.57:310.67:320.47:074:37Third Quarter16Thu
17Fri1:582.92:102.48:440.78:300.47:074:38Third Quarter17Fri
18Sat2:462.93:042.310:030.69:340.47:064:39Third Quarter18Sat
19Sun3:442.94:072.411:080.510:360.27:054:40Waning Crescent19Sun
20Mon4:473.15:112.611:590.311:310.07:054:41Waning Crescent20Mon
21Tue5:443.46:062.912:440.07:044:42Waning Crescent21Tue
22Wed6:333.76:553.312:22-0.21:27-0.27:044:44New Moon22Wed
23Thu7:204.07:433.61:10-0.42:09-0.47:034:45New Moon23Thu
24Fri8:064.38:303.92:00-0.62:51-0.67:024:46New Moon24Fri
25Sat8:534.49:184.12:50-0.73:31-0.77:014:47New Moon25Sat
26Sun9:404.310:074.23:39-0.74:10-0.87:014:49Waxing Crescent26Sun
27Mon10:304.210:594.24:28-0.74:49-0.77:004:50Waxing Crescent27Mon
28Tue11:223.911:534.15:17-0.45:30-0.66:594:51Waxing Crescent28Tue
29Wed12:173.66:10-0.26:15-0.46:584:52First Quarter29Wed
30Thu12:504.01:143.47:180.27:07-0.16:574:54First Quarter30Thu
31Fri1:483.82:143.19:250.38:120.16:564:55First Quarter31Fri
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 9:13 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 18% 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 Waxing Crescent (18% 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