Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide (tomorrow) : 4:04 am (-0.1 ft)
Next high tide : in 5h 08m at 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 - Mar 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:303.410:483.44:22-0.24:30-0.26:175:32Waxing Crescent1Sat
2Sun11:083.111:253.24:590.05:05-0.16:165:33Waxing Crescent2Sun
3Mon11:482.95:380.15:420.16:145:34Waxing Crescent3Mon
4Tue12:043.012:302.76:190.46:230.26:125:36First Quarter4Tue
5Wed12:462.91:162.67:100.57:120.46:115:37First Quarter5Wed
6Thu1:322.82:052.58:190.78:140.46:095:38First Quarter6Thu
7Fri2:242.83:012.69:490.69:240.46:075:39First Quarter7Fri
8Sat3:252.94:042.710:580.410:330.26:065:40Waxing Gibbous8Sat
9Sun4:323.15:063.111:460.211:32-0.16:045:41Waxing Gibbous9Sun
10Mon5:323.46:013.512:28-0.16:035:43Waxing Gibbous10Mon
11Tue6:253.86:513.912:25-0.41:08-0.46:015:44Waxing Gibbous11Tue
12Wed7:144.17:394.31:14-0.61:48-0.65:595:45Full Moon12Wed
13Thu8:014.48:274.62:04-0.82:31-0.85:575:46Full Moon13Thu
14Fri8:504.49:164.72:55-0.93:13-0.95:565:47Full Moon14Fri
15Sat9:394.410:064.73:45-0.93:56-0.85:545:48Waning Gibbous15Sat
16Sun10:314.210:594.64:33-0.74:39-0.75:525:49Waning Gibbous16Sun
17Mon11:254.011:554.45:21-0.55:24-0.45:515:51Waning Gibbous17Mon
18Tue12:223.76:15-0.16:14-0.15:495:52Third Quarter18Tue
19Wed12:544.11:213.57:270.27:140.25:475:53Third Quarter19Wed
20Thu1:543.82:223.49:370.48:470.45:465:54Third Quarter20Thu
21Fri2:583.63:273.310:510.410:520.45:445:55Third Quarter21Fri
22Sat4:053.54:333.411:460.311:510.35:425:56Waning Crescent22Sat
23Sun5:093.55:333.512:280.35:405:57Waning Crescent23Sun
24Mon6:043.66:243.712:330.212:580.25:395:58Waning Crescent24Mon
25Tue6:503.77:093.91:050.11:200.15:375:59Waning Crescent25Tue
26Wed7:323.87:503.91:360.01:440.05:356:00New Moon26Wed
27Thu8:103.78:273.92:10-0.12:14-0.15:346:02New Moon27Thu
28Fri8:473.79:033.92:47-0.22:48-0.25:326:03New Moon28Fri
29Sat9:233.59:373.73:24-0.23:23-0.25:306:04New Moon29Sat
30Sun9:593.410:113.64:01-0.13:59-0.15:296:05Waxing Crescent30Sun
31Mon10:353.210:453.44:370.04:340.05:276:06Waxing Crescent31Mon
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 12:35 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 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