Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide : 6:12 pm (0.3 ft)
Next high tide : in 5h 22m at 11:56 am (4.4 ft)
Sunset today : 7:41 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Jul 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:332.97:013.71:080.612:400.45:118:21Waxing Gibbous1Wed
2Thu7:213.17:443.81:520.41:260.35:128:21Waxing Gibbous2Thu
3Fri8:053.38:254.02:350.32:110.25:128:20Full Moon3Fri
4Sat8:493.59:074.23:180.22:560.15:138:20Full Moon4Sat
5Sun9:333.79:504.34:000.03:420.05:138:20Full Moon5Sun
6Mon10:183.810:354.34:39-0.14:290.05:148:20Waning Gibbous6Mon
7Tue11:054.011:234.35:15-0.15:150.05:158:19Waning Gibbous7Tue
8Wed11:544.15:51-0.16:030.15:158:19Waning Gibbous8Wed
9Thu12:134.112:464.16:29-0.16:530.35:168:19Waning Gibbous9Thu
10Fri1:064.01:404.27:120.07:540.55:178:18Third Quarter10Fri
11Sat2:013.82:354.38:020.19:160.65:178:18Third Quarter11Sat
12Sun2:583.63:324.39:000.211:030.65:188:17Third Quarter12Sun
13Mon3:583.54:354.310:050.35:198:17Waning Crescent13Mon
14Tue5:033.55:414.312:180.511:12 AM0.35:208:16Waning Crescent14Tue
15Wed6:093.66:454.41:160.412:150.25:208:15Waning Crescent15Wed
16Thu7:093.77:414.52:080.31:110.25:218:15Waning Crescent16Thu
17Fri8:033.98:324.62:560.22:030.15:228:14New Moon17Fri
18Sat8:534.19:194.63:410.22:540.15:238:13New Moon18Sat
19Sun9:414.210:044.44:180.23:430.15:248:13New Moon19Sun
20Mon10:274.210:474.24:490.14:300.25:258:12Waxing Crescent20Mon
21Tue11:124.111:293.95:160.25:140.35:268:11Waxing Crescent21Tue
22Wed11:563.95:440.25:550.45:278:10Waxing Crescent22Wed
23Thu12:103.612:413.86:160.36:380.65:278:10Waxing Crescent23Thu
24Fri12:523.31:253.66:500.47:240.85:288:09First Quarter24Fri
25Sat1:343.12:073.57:290.58:180.95:298:08First Quarter25Sat
26Sun2:162.92:493.38:150.79:271.05:308:07First Quarter26Sun
27Mon2:592.83:343.39:100.710:431.05:318:06First Quarter27Mon
28Tue3:482.74:263.310:110.811:490.95:328:05Waxing Gibbous28Tue
29Wed4:472.75:263.411:140.75:338:04Waxing Gibbous29Wed
30Thu5:502.96:233.612:410.712:110.55:348:03Waxing Gibbous30Thu
31Fri6:473.17:133.91:260.51:020.35:358:02Waxing Gibbous31Fri
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 3:04 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 spring phase. Tonight's moon is 18% 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 Waxing Crescent (18% 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