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 4h 32m at 10:05 pm (1.0 ft)
Next high tide (tomorrow) : 3:17 am (3.0 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 - Nov 2071

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:533.03:133.09:310.910:120.76:154:37First Quarter1Sun
2Mon3:463.14:073.010:380.810:560.56:164:35Waxing Gibbous2Mon
3Tue4:393.34:583.211:290.611:340.36:174:34Waxing Gibbous3Tue
4Wed5:263.55:453.412:120.36:184:33Waxing Gibbous4Wed
5Thu6:093.86:293.612:100.112:520.16:194:32Waxing Gibbous5Thu
6Fri6:504.17:123.812:46-0.11:32-0.16:214:31Full Moon6Fri
7Sat7:324.47:563.91:24-0.32:14-0.26:224:30Full Moon7Sat
8Sun8:154.58:424.02:04-0.42:57-0.36:234:29Full Moon8Sun
9Mon9:014.69:304.02:47-0.43:41-0.26:244:27Waning Gibbous9Mon
10Tue9:504.610:224.03:32-0.44:25-0.26:264:26Waning Gibbous10Tue
11Wed10:424.411:173.94:19-0.35:110.06:274:25Waning Gibbous11Wed
12Thu11:394.35:08-0.16:030.26:284:24Waning Gibbous12Thu
13Fri12:153.812:394.16:030.27:110.36:294:24Third Quarter13Fri
14Sat1:153.91:394.07:100.49:010.46:304:23Third Quarter14Sat
15Sun2:153.92:393.98:490.510:140.36:324:22Third Quarter15Sun
16Mon3:164.03:423.810:340.411:040.26:334:21Waning Crescent16Mon
17Tue4:194.24:453.811:360.311:430.16:344:20Waning Crescent17Tue
18Wed5:194.45:433.912:250.16:354:19Waning Crescent18Wed
19Thu6:124.56:353.912:160.01:060.16:364:19Waning Crescent19Thu
20Fri7:014.67:223.912:470.01:440.06:384:18New Moon20Fri
21Sat7:474.68:073.91:22-0.12:210.06:394:17New Moon21Sat
22Sun8:304.58:513.82:00-0.12:580.06:404:17New Moon22Sun
23Mon9:134.39:343.72:410.03:350.06:414:16New Moon23Mon
24Tue9:554.010:173.53:220.04:120.16:424:15Waxing Crescent24Tue
25Wed10:373.811:013.24:050.24:500.26:434:15Waxing Crescent25Wed
26Thu11:203.511:473.14:470.35:290.46:454:14Waxing Crescent26Thu
27Fri12:043.25:310.56:120.56:464:14Waxing Crescent27Fri
28Sat12:342.912:483.06:190.77:020.66:474:13First Quarter28Sat
29Sun1:192.91:332.97:190.88:010.66:484:13First Quarter29Sun
30Mon2:042.92:182.88:340.89:020.56:494:13First Quarter30Mon
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 12:41 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