Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 13m at 3:21 am (0.0 ft)
Next high tide : 8:41 am (4.4 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 - Jul 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:334.511:584.75:49-0.35:44-0.15:118:21Waning Gibbous1Wed
2Thu12:294.46:33-0.16:380.25:118:21Waning Gibbous2Thu
3Fri12:534.41:254.27:180.17:380.55:128:20Third Quarter3Fri
4Sat1:474.02:204.18:070.39:100.75:128:20Third Quarter4Sat
5Sun2:403.73:143.99:010.510:430.85:138:20Third Quarter5Sun
6Mon3:343.44:103.89:550.611:430.85:148:20Third Quarter6Mon
7Tue4:293.25:083.710:450.65:148:19Waning Crescent7Tue
8Wed5:283.16:053.712:280.811:31 AM0.65:158:19Waning Crescent8Wed
9Thu6:243.16:553.71:050.712:160.55:168:19Waning Crescent9Thu
10Fri7:133.27:393.81:390.61:000.45:168:18Waning Crescent10Fri
11Sat7:563.38:183.92:150.51:430.35:178:18New Moon11Sat
12Sun8:363.48:533.92:540.42:270.35:188:17New Moon12Sun
13Mon9:153.59:283.93:350.33:110.25:198:17New Moon13Mon
14Tue9:523.510:033.94:140.23:540.25:198:16New Moon14Tue
15Wed10:313.510:393.84:500.24:360.25:208:16Waxing Crescent15Wed
16Thu11:103.511:183.85:210.25:160.35:218:15Waxing Crescent16Thu
17Fri11:523.65:510.25:550.35:228:14Waxing Crescent17Fri
18Sat12:013.712:373.66:220.26:370.45:238:14Waxing Crescent18Sat
19Sun12:493.61:263.76:590.27:250.55:238:13First Quarter19Sun
20Mon1:393.52:163.87:440.28:250.65:248:12First Quarter20Mon
21Tue2:333.53:093.98:390.39:390.65:258:12First Quarter21Tue
22Wed3:303.54:074.19:410.210:590.55:268:11First Quarter22Wed
23Thu4:323.55:114.310:480.15:278:10Waxing Gibbous23Thu
24Fri5:403.66:164.612:120.311:52 AM0.05:288:09Waxing Gibbous24Fri
25Sat6:443.97:164.81:120.112:53-0.15:298:08Waxing Gibbous25Sat
26Sun7:424.28:115.02:07-0.11:50-0.35:308:07Full Moon26Sun
27Mon8:374.59:045.13:00-0.22:46-0.35:318:06Full Moon27Mon
28Tue9:294.69:555.13:52-0.33:43-0.35:328:05Full Moon28Tue
29Wed10:204.710:454.94:40-0.34:38-0.25:338:04Waning Gibbous29Wed
30Thu11:124.611:354.65:21-0.25:290.05:348:03Waning Gibbous30Thu
31Fri12:044.55:58-0.16:170.25:358:02Waning Gibbous31Fri
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 6:01 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