Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 5h 14m at 8:23 am (0.6 ft)
Next high tide : 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 - Jul 2071

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:154.66:23-0.26:240.05:128:21Waxing Crescent1Wed
2Thu12:374.51:124.57:110.07:230.35:128:21First Quarter2Thu
3Fri1:334.22:084.48:040.28:430.65:138:20First Quarter3Fri
4Sat2:293.93:054.29:070.410:300.75:138:20First Quarter4Sat
5Sun3:253.64:024.110:130.511:400.75:148:20First Quarter5Sun
6Mon4:233.45:024.011:050.65:158:20Waxing Gibbous6Mon
7Tue5:243.36:014.012:320.711:47 AM0.65:158:19Waxing Gibbous7Tue
8Wed6:233.36:554.01:130.712:270.65:168:19Waxing Gibbous8Wed
9Thu7:153.37:424.01:450.61:060.55:178:19Waxing Gibbous9Thu
10Fri8:013.48:244.02:170.51:470.45:178:18Full Moon10Fri
11Sat8:423.59:024.02:510.42:300.35:188:18Full Moon11Sat
12Sun9:223.69:394.03:290.33:150.35:198:17Full Moon12Sun
13Mon9:593.610:143.94:080.23:590.35:208:17Full Moon13Mon
14Tue10:363.510:493.84:450.24:420.35:208:16Waning Gibbous14Tue
15Wed11:143.511:253.65:190.25:210.45:218:15Waning Gibbous15Wed
16Thu11:523.45:510.26:000.55:228:15Waning Gibbous16Thu
17Fri12:043.512:333.46:230.36:390.65:238:14Waning Gibbous17Fri
18Sat12:473.41:173.56:580.37:230.75:248:13Third Quarter18Sat
19Sun1:343.32:033.57:390.38:180.75:258:13Third Quarter19Sun
20Mon2:243.32:533.78:290.39:270.85:258:12Third Quarter20Mon
21Tue3:173.33:483.89:280.310:460.65:268:11Third Quarter21Tue
22Wed4:173.34:494.010:320.211:580.45:278:10Waning Crescent22Wed
23Thu5:233.55:554.311:350.05:288:09Waning Crescent23Thu
24Fri6:273.86:574.612:580.212:36-0.25:298:09Waning Crescent24Fri
25Sat7:264.17:534.91:520.01:33-0.35:308:08New Moon25Sat
26Sun8:214.48:475.12:44-0.22:29-0.55:318:07New Moon26Sun
27Mon9:154.79:395.13:37-0.43:26-0.55:328:06New Moon27Mon
28Tue10:074.910:305.04:28-0.44:24-0.45:338:05Waxing Crescent28Tue
29Wed10:594.911:224.85:14-0.45:18-0.35:348:04Waxing Crescent29Wed
30Thu11:534.85:55-0.36:090.05:358:03Waxing Crescent30Thu
31Fri12:154.512:474.66:35-0.17:020.35:368:01Waxing 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 11:42 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 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