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 17m 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 - Jun 1927

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:234.110:464.74:53-0.14:16-0.15:108:09Waxing Crescent1Wed
2Thu11:143.911:364.45:370.05:040.15:098:10Waxing Crescent2Thu
3Fri12:053.86:170.25:500.35:098:11Waxing Crescent3Fri
4Sat12:284.012:593.66:590.46:380.55:098:12Waxing Crescent4Sat
5Sun1:213.71:523.47:460.67:320.85:088:12First Quarter5Sun
6Mon2:133.42:443.48:450.78:380.95:088:13First Quarter6Mon
7Tue3:023.13:353.39:470.810:001.05:088:14First Quarter7Tue
8Wed3:503.04:263.310:360.711:110.95:078:14First Quarter8Wed
9Thu4:412.95:193.411:180.75:078:15Waxing Gibbous9Thu
10Fri5:352.86:083.512:050.811:57 AM0.55:078:16Waxing Gibbous10Fri
11Sat6:252.96:523.712:500.612:360.45:078:16Waxing Gibbous11Sat
12Sun7:093.07:313.81:320.41:140.35:078:17Waxing Gibbous12Sun
13Mon7:503.28:094.02:140.31:530.25:078:17Full Moon13Mon
14Tue8:313.38:484.12:560.22:330.15:078:18Full Moon14Tue
15Wed9:123.49:294.23:380.13:150.15:078:18Full Moon15Wed
16Thu9:563.510:124.24:200.03:580.15:078:18Full Moon16Thu
17Fri10:413.510:584.25:000.04:420.15:078:19Waning Gibbous17Fri
18Sat11:303.611:484.15:390.05:280.15:078:19Waning Gibbous18Sat
19Sun12:223.66:200.16:160.25:078:19Waning Gibbous19Sun
20Mon12:414.11:163.77:040.27:100.45:078:20Waning Gibbous20Mon
21Tue1:374.02:123.87:560.28:170.55:078:20Third Quarter21Tue
22Wed2:323.93:074.08:550.29:450.65:078:20Third Quarter22Wed
23Thu3:293.84:064.29:580.211:180.55:088:20Third Quarter23Thu
24Fri4:303.75:074.310:570.25:088:21Waning Crescent24Fri
25Sat5:343.76:094.512:280.311:51 AM0.15:088:21Waning Crescent25Sat
26Sun6:363.77:074.71:240.212:410.05:088:21Waning Crescent26Sun
27Mon7:333.88:014.82:150.11:290.05:098:21New Moon27Mon
28Tue8:254.08:514.83:060.12:170.05:098:21New Moon28Tue
29Wed9:154.09:404.73:560.13:060.05:108:21New Moon29Wed
30Thu10:044.010:274.54:410.13:560.15:108:21New Moon30Thu
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