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 55m 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 - Apr 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:153.011:243.25:120.15:100.15:256:07Waxing Crescent1Tue
2Wed11:582.85:490.35:490.35:236:08Waxing Crescent2Wed
3Thu12:073.112:452.86:310.56:340.45:226:09First Quarter3Thu
4Fri12:563.01:362.87:260.67:320.55:206:10First Quarter4Fri
5Sat1:493.02:302.98:410.68:440.55:186:11First Quarter5Sat
6Sun2:483.13:303.110:000.59:590.35:176:13First Quarter6Sun
7Mon3:533.24:333.410:590.211:060.05:156:14Waxing Gibbous7Mon
8Tue4:583.55:323.811:46-0.15:136:15Waxing Gibbous8Tue
9Wed5:563.96:254.312:03-0.312:30-0.35:126:16Waxing Gibbous9Wed
10Thu6:494.27:164.712:56-0.51:13-0.65:106:17Full Moon10Thu
11Fri7:404.48:055.01:48-0.71:58-0.75:086:18Full Moon11Fri
12Sat8:304.58:565.12:41-0.82:45-0.85:076:19Full Moon12Sat
13Sun9:214.59:475.03:33-0.83:32-0.75:056:20Waning Gibbous13Sun
14Mon10:134.310:404.84:23-0.64:19-0.55:046:21Waning Gibbous14Mon
15Tue11:084.111:364.55:12-0.45:06-0.35:026:22Waning Gibbous15Tue
16Wed12:063.96:05-0.15:570.15:006:23Waning Gibbous16Wed
17Thu12:354.21:053.77:160.36:580.44:596:25Third Quarter17Thu
18Fri1:343.92:043.69:100.48:560.64:576:26Third Quarter18Fri
19Sat2:353.63:053.510:210.510:410.64:566:27Third Quarter19Sat
20Sun3:373.44:083.511:120.511:350.64:546:28Waning Crescent20Sun
21Mon4:403.45:083.611:470.54:536:29Waning Crescent21Mon
22Tue5:363.45:593.712:140.512:110.44:516:30Waning Crescent22Tue
23Wed6:233.56:433.912:440.312:330.34:506:31Waning Crescent23Wed
24Thu7:043.57:233.91:140.21:020.24:486:32New Moon24Thu
25Fri7:423.57:594.01:480.11:360.14:476:33New Moon25Fri
26Sat8:193.58:333.92:250.02:130.04:456:34New Moon26Sat
27Sun9:543.510:063.84:040.03:510.05:447:35New Moon27Sun
28Mon10:303.410:393.74:410.04:290.05:437:37Waxing Crescent28Mon
29Tue11:083.311:153.65:170.15:060.15:417:38Waxing Crescent29Tue
30Wed11:483.111:543.45:510.25:430.25:407:39Waxing Crescent30Wed
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