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 3h 18m 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 - Jan 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:513.911:173.64:26-0.15:03-0.17:104:22Waxing Crescent1Wed
2Thu11:383.55:090.15:390.17:104:23Waxing Crescent2Thu
3Fri12:073.312:263.25:540.36:200.27:104:24First Quarter3Fri
4Sat12:553.21:122.96:460.57:060.37:104:25First Quarter4Sat
5Sun1:433.01:572.77:520.78:010.47:104:26First Quarter5Sun
6Mon2:302.92:452.69:150.79:010.47:104:27First Quarter6Mon
7Tue3:202.93:382.510:290.69:590.37:094:28Waxing Gibbous7Tue
8Wed4:162.94:362.611:230.510:520.27:094:29Waxing Gibbous8Wed
9Thu5:103.15:292.712:090.37:094:30Waxing Gibbous9Thu
10Fri5:563.36:162.912:510.17:094:31Waxing Gibbous10Fri
11Sat6:383.57:003.212:25-0.21:32-0.17:094:32Full Moon11Sat
12Sun7:193.87:423.41:08-0.32:12-0.37:084:33Full Moon12Sun
13Mon8:004.08:263.61:52-0.52:51-0.47:084:34Full Moon13Mon
14Tue8:434.19:103.72:36-0.63:29-0.57:074:35Full Moon14Tue
15Wed9:284.19:573.83:21-0.64:05-0.57:074:36Waning Gibbous15Wed
16Thu10:154.110:473.84:06-0.64:42-0.57:074:37Waning Gibbous16Thu
17Fri11:053.911:393.94:52-0.55:21-0.57:064:39Waning Gibbous17Fri
18Sat11:593.85:41-0.36:05-0.37:064:40Third Quarter18Sat
19Sun12:353.912:563.66:370.06:57-0.27:054:41Third Quarter19Sun
20Mon1:313.81:543.47:490.28:000.07:044:42Third Quarter20Mon
21Tue2:313.82:553.39:380.29:140.07:044:43Third Quarter21Tue
22Wed3:343.94:013.211:080.210:300.07:034:45Waning Crescent22Wed
23Thu4:413.95:073.312:080.07:024:46Waning Crescent23Thu
24Fri5:444.16:073.512:58-0.17:024:47Waning Crescent24Fri
25Sat6:394.27:003.712:26-0.21:43-0.27:014:48New Moon25Sat
26Sun7:284.37:483.91:13-0.32:22-0.27:004:50New Moon26Sun
27Mon8:144.38:343.91:58-0.32:57-0.36:594:51New Moon27Mon
28Tue8:584.29:193.92:43-0.43:27-0.36:584:52New Moon28Tue
29Wed9:414.010:023.73:25-0.33:58-0.36:574:53Waxing Crescent29Wed
30Thu10:223.710:453.54:05-0.24:30-0.26:564:55Waxing Crescent30Thu
31Fri11:033.411:273.34:45-0.15:04-0.26:564:56Waxing Crescent31Fri
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