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 : 2:58 pm (-0.2 ft)
Next high tide : in 4h 39m at 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 - Jun 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:564.411:225.05:14-0.55:02-0.35:108:10Waning Gibbous1Mon
2Tue11:524.36:04-0.35:55-0.15:098:10Waning Gibbous2Tue
3Wed12:184.712:494.26:56-0.16:500.25:098:11Waning Gibbous3Wed
4Thu1:154.41:484.17:570.27:590.55:098:12Third Quarter4Thu
5Fri2:124.12:454.09:170.410:010.75:088:13Third Quarter5Fri
6Sat3:093.83:433.910:260.511:220.75:088:13Third Quarter6Sat
7Sun4:063.64:423.911:150.55:088:14Third Quarter7Sun
8Mon5:063.45:413.912:180.711:49 AM0.55:078:15Waning Crescent8Mon
9Tue6:043.36:353.91:010.612:180.55:078:15Waning Crescent9Tue
10Wed6:563.37:234.01:350.512:510.45:078:16Waning Crescent10Wed
11Thu7:423.48:054.02:060.51:280.35:078:16Waning Crescent11Thu
12Fri8:243.48:434.02:390.32:070.35:078:17New Moon12Fri
13Sat9:043.59:204.03:160.32:490.25:078:17New Moon13Sat
14Sun9:423.59:543.93:560.23:320.25:078:18New Moon14Sun
15Mon10:203.410:293.84:350.24:150.25:078:18New Moon15Mon
16Tue10:593.411:053.75:120.24:560.35:078:19Waxing Crescent16Tue
17Wed11:393.311:443.65:460.35:360.45:078:19Waxing Crescent17Wed
18Thu12:223.36:180.36:160.55:078:19Waxing Crescent18Thu
19Fri12:273.51:073.36:530.47:000.65:078:20Waxing Crescent19Fri
20Sat1:143.41:543.47:320.47:520.65:078:20First Quarter20Sat
21Sun2:033.42:433.58:210.48:560.75:078:20First Quarter21Sun
22Mon2:553.43:353.79:180.310:090.65:078:20First Quarter22Mon
23Tue3:523.44:324.010:180.211:210.45:088:21Waxing Gibbous23Tue
24Wed4:553.55:344.311:180.15:088:21Waxing Gibbous24Wed
25Thu6:003.66:354.612:250.212:15-0.15:088:21Waxing Gibbous25Thu
26Fri7:023.97:324.91:22-0.11:09-0.35:098:21Waxing Gibbous26Fri
27Sat7:584.28:265.12:17-0.22:03-0.45:098:21Full Moon27Sat
28Sun8:534.49:195.23:13-0.42:58-0.55:098:21Full Moon28Sun
29Mon9:464.510:125.24:09-0.43:54-0.45:108:21Full Moon29Mon
30Tue10:394.511:055.05:01-0.44:50-0.35:108:21Waning Gibbous30Tue
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 11:49 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