Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Thursday, August 13, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 4h 00m at 4:04 am (-0.1 ft)
Next high tide : 9:31 am (4.6 ft)
Sunset today : 7:45 pm
Sunrise tomorrow : 5:49 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Jun 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:442.96:143.512:190.711:59 AM0.45:108:10Waning Crescent1Sat
2Sun6:333.06:583.61:030.512:410.35:098:11Waning Crescent2Sun
3Mon7:183.27:373.81:450.31:220.25:098:12Waning Crescent3Mon
4Tue8:003.38:164.02:260.22:020.15:088:12New Moon4Tue
5Wed8:413.58:564.13:070.12:440.05:088:13New Moon5Wed
6Thu9:243.69:374.23:490.03:26-0.15:088:14New Moon6Thu
7Fri10:083.710:214.34:29-0.14:10-0.15:078:14New Moon7Fri
8Sat10:553.811:084.25:07-0.14:55-0.15:078:15Waxing Crescent8Sat
9Sun11:443.811:594.25:45-0.15:410.05:078:15Waxing Crescent9Sun
10Mon12:373.96:250.06:300.15:078:16Waxing Crescent10Mon
11Tue12:534.11:323.97:110.17:260.35:078:17First Quarter11Tue
12Wed1:494.02:274.18:040.28:350.45:078:17First Quarter12Wed
13Thu2:453.83:244.29:070.210:020.55:078:18First Quarter13Thu
14Fri3:443.74:234.310:140.211:310.45:078:18First Quarter14Fri
15Sat4:473.75:264.411:160.25:078:18Waxing Gibbous15Sat
16Sun5:523.76:274.612:380.312:120.15:078:19Waxing Gibbous16Sun
17Mon6:533.87:244.81:320.11:020.05:078:19Waxing Gibbous17Mon
18Tue7:484.08:164.92:210.11:490.05:078:19Full Moon18Tue
19Wed8:394.19:054.83:090.02:360.05:078:20Full Moon19Wed
20Thu9:284.19:524.73:540.03:240.05:078:20Full Moon20Thu
21Fri10:164.110:394.54:350.04:120.15:078:20Full Moon21Fri
22Sat11:044.011:244.25:100.14:580.25:088:20Waning Gibbous22Sat
23Sun11:513.85:440.25:420.45:088:21Waning Gibbous23Sun
24Mon12:103.912:393.66:190.36:270.55:088:21Waning Gibbous24Mon
25Tue12:563.61:263.56:570.47:150.75:088:21Waning Gibbous25Tue
26Wed1:403.32:123.47:400.58:110.95:098:21Third Quarter26Wed
27Thu2:243.12:553.38:280.69:211.05:098:21Third Quarter27Thu
28Fri3:073.03:393.39:220.610:370.95:108:21Third Quarter28Fri
29Sat3:532.94:263.310:170.611:400.85:108:21Third Quarter29Sat
30Sun4:452.85:193.411:100.55:118:21Waning Crescent30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447277)

Common Questions About Onset Beach, MA Tides

Show All
What time does the tide turn (slack tide) in Onset Beach, MA today?

Slack tide in Onset Beach, MA is approximately 6:47 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 spring phase. Tonight's moon is 1% 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 New Moon (1% 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