Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide : 6:12 pm (0.3 ft)
Next high tide : in 2h 42m at 11:56 am (4.4 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 - Apr 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:223.24:453.311:510.511:480.55:256:07Waxing Gibbous1Wed
2Thu5:213.25:403.512:210.45:236:08Waxing Gibbous2Thu
3Fri6:093.36:263.612:220.412:420.35:216:09Waxing Gibbous3Fri
4Sat6:503.37:063.812:530.21:040.25:206:11Waxing Gibbous4Sat
5Sun7:263.47:423.91:280.11:320.15:186:12Full Moon5Sun
6Mon8:013.48:163.92:05-0.12:040.05:166:13Full Moon6Mon
7Tue8:343.48:493.82:43-0.12:38-0.15:156:14Full Moon7Tue
8Wed9:083.39:223.73:21-0.13:130.05:136:15Full Moon8Wed
9Thu9:433.29:563.63:57-0.13:470.05:116:16Waning Gibbous9Thu
10Fri10:213.010:343.54:310.04:220.15:106:17Waning Gibbous10Fri
11Sat11:032.911:183.35:050.24:580.25:086:18Waning Gibbous11Sat
12Sun11:502.95:420.35:380.35:076:19Waning Gibbous12Sun
13Mon12:083.312:432.96:260.56:280.45:056:20Third Quarter13Mon
14Tue1:033.21:372.97:260.67:340.55:036:21Third Quarter14Tue
15Wed2:013.32:353.18:420.58:560.55:026:23Third Quarter15Wed
16Thu3:023.43:373.49:550.310:200.35:006:24Waning Crescent16Thu
17Fri4:073.54:413.810:520.111:290.04:596:25Waning Crescent17Fri
18Sat5:113.75:404.311:41-0.24:576:26Waning Crescent18Sat
19Sun6:084.06:344.712:26-0.312:27-0.54:566:27Waning Crescent19Sun
20Mon7:014.27:265.01:20-0.51:12-0.64:546:28New Moon20Mon
21Tue7:534.38:165.12:14-0.61:59-0.74:526:29New Moon21Tue
22Wed8:434.39:075.13:08-0.62:47-0.64:516:30New Moon22Wed
23Thu9:354.29:594.83:59-0.53:36-0.54:506:31Waxing Crescent23Thu
24Fri10:274.010:534.54:48-0.34:24-0.34:486:32Waxing Crescent24Fri
25Sat11:223.811:494.15:360.05:120.04:476:34Waxing Crescent25Sat
26Sun1:193.67:320.37:030.45:457:35First Quarter26Sun
27Mon1:473.72:173.59:030.68:060.75:447:36First Quarter27Mon
28Tue2:453.43:143.410:230.79:470.85:427:37First Quarter28Tue
29Wed3:423.24:123.411:160.711:230.85:417:38First Quarter29Wed
30Thu4:413.05:113.411:540.65:407:39Waxing Gibbous30Thu
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 3:04 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