Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide : 10:05 pm (1.0 ft)
Next high tide : in 1h 50m at 3:02 pm (3.8 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:26 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Sep 2071

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:283.43:023.78:110.810:091.06:087:16First Quarter1Tue
2Wed3:223.23:583.59:160.911:221.06:097:14First Quarter2Wed
3Thu4:203.14:583.410:320.96:117:12Waxing Gibbous3Thu
4Fri5:213.15:583.412:090.911:39 AM0.96:127:11Waxing Gibbous4Fri
5Sat6:183.26:473.512:460.812:300.76:137:09Waxing Gibbous5Sat
6Sun7:053.47:283.71:200.61:150.56:147:07Waxing Gibbous6Sun
7Mon7:453.68:043.81:540.41:570.46:157:06Full Moon7Mon
8Tue8:223.78:383.92:290.32:390.26:167:04Full Moon8Tue
9Wed8:573.99:133.93:030.13:200.16:177:02Full Moon9Wed
10Thu9:324.09:494.03:370.03:590.16:187:00Full Moon10Thu
11Fri10:094.110:283.94:110.04:370.16:196:59Waning Gibbous11Fri
12Sat10:484.111:103.84:440.05:140.26:206:57Waning Gibbous12Sat
13Sun11:314.011:573.75:180.05:520.36:216:55Waning Gibbous13Sun
14Mon12:194.05:560.16:330.46:226:54Waning Gibbous14Mon
15Tue12:493.61:124.06:380.27:230.66:236:52Third Quarter15Tue
16Wed1:443.52:094.07:290.38:300.76:246:50Third Quarter16Wed
17Thu2:423.53:084.08:320.410:120.76:256:48Third Quarter17Thu
18Fri3:433.64:124.19:490.411:450.56:266:47Third Quarter18Fri
19Sat4:483.85:204.211:100.36:276:45Waning Crescent19Sat
20Sun5:534.16:244.412:400.312:220.16:286:43Waning Crescent20Sun
21Mon6:534.57:214.61:250.11:21-0.16:296:41Waning Crescent21Mon
22Tue7:474.88:124.82:05-0.12:14-0.26:306:40New Moon22Tue
23Wed8:385.09:014.82:45-0.23:05-0.36:316:38New Moon23Wed
24Thu9:265.19:494.73:25-0.23:55-0.26:326:36New Moon24Thu
25Fri10:145.010:364.54:04-0.24:41-0.16:336:34Waxing Crescent25Fri
26Sat11:024.811:244.24:43-0.15:230.16:346:33Waxing Crescent26Sat
27Sun11:514.55:210.16:040.36:356:31Waxing Crescent27Sun
28Mon12:133.812:414.16:000.36:460.66:366:29Waxing Crescent28Mon
29Tue1:053.51:343.86:420.67:350.86:376:27First Quarter29Tue
30Wed1:573.32:263.57:310.88:411.06:386:26First Quarter30Wed
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 6:33 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 neap phase. Tonight's moon is 52% 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 minimum.

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 First Quarter (52% illuminated). This places Onset Beach, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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