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 3h 28m 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 - Feb 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:063.99:253.72:52-0.33:25-0.36:554:57New Moon1Sun
2Mon9:453.710:053.63:32-0.33:56-0.36:544:58Waxing Crescent2Mon
3Tue10:233.510:443.44:11-0.24:29-0.26:534:59Waxing Crescent3Tue
4Wed11:013.211:233.24:50-0.15:02-0.26:525:00Waxing Crescent4Wed
5Thu11:402.95:290.15:380.06:515:02Waxing Crescent5Thu
6Fri12:023.012:212.76:100.36:170.16:505:03First Quarter6Fri
7Sat12:432.91:042.66:590.57:020.26:485:04First Quarter7Sat
8Sun1:262.81:512.58:030.67:580.36:475:05First Quarter8Sun
9Mon2:142.82:442.49:300.69:030.36:465:07First Quarter9Mon
10Tue3:102.83:452.510:480.510:110.26:455:08Waxing Gibbous10Tue
11Wed4:153.04:492.811:410.311:120.06:445:09Waxing Gibbous11Wed
12Thu5:183.35:473.112:250.06:425:11Waxing Gibbous12Thu
13Fri6:123.66:383.512:06-0.31:06-0.36:415:12Waxing Gibbous13Fri
14Sat7:014.07:263.912:56-0.61:47-0.56:405:13Full Moon14Sat
15Sun7:484.38:144.21:46-0.82:28-0.76:385:14Full Moon15Sun
16Mon8:354.49:024.52:36-0.93:10-0.86:375:16Full Moon16Mon
17Tue9:244.49:514.53:26-0.93:50-0.96:365:17Waning Gibbous17Tue
18Wed10:144.310:434.54:15-0.84:31-0.86:345:18Waning Gibbous18Wed
19Thu11:064.011:374.35:03-0.65:13-0.66:335:19Waning Gibbous19Thu
20Fri12:023.75:54-0.35:59-0.46:315:21Third Quarter20Fri
21Sat12:344.112:593.56:540.06:52-0.16:305:22Third Quarter21Sat
22Sun1:343.91:593.38:460.38:000.26:295:23Third Quarter22Sun
23Mon2:363.73:023.110:290.49:480.36:275:24Third Quarter23Mon
24Tue3:423.54:093.111:330.311:200.36:265:25Waning Crescent24Tue
25Wed4:503.55:143.212:230.26:245:27Waning Crescent25Wed
26Thu5:493.66:103.412:110.21:020.26:225:28Waning Crescent26Thu
27Fri6:393.76:583.612:490.11:310.16:215:29Waning Crescent27Fri
28Sat7:233.87:403.81:230.01:540.06:195:30New Moon28Sat
29Sun8:033.88:203.81:58-0.12:19-0.16:185:31New Moon29Sun
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