Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Sunday, August 9, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide : 11:55 am (0.2 ft)
Next high tide : in 2h 57m at 5:47 am (3.4 ft)
Sunset today : 7:51 pm
Sunrise tomorrow : 5:45 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - May 1948

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:122.93:412.810:080.910:031.05:387:40Third Quarter1Sat
2Sun4:062.84:372.911:100.811:240.95:377:41Third Quarter2Sun
3Mon5:022.85:333.011:530.75:367:42Waning Crescent3Mon
4Tue5:552.96:213.312:200.712:290.55:347:43Waning Crescent4Tue
5Wed6:403.07:023.51:040.51:030.35:337:44Waning Crescent5Wed
6Thu7:203.27:393.81:450.31:360.15:327:46Waning Crescent6Thu
7Fri7:593.38:164.12:250.12:100.05:317:47New Moon7Fri
8Sat8:403.58:554.23:06-0.12:46-0.15:297:48New Moon8Sat
9Sun9:223.69:364.33:47-0.13:25-0.25:287:49New Moon9Sun
10Mon10:063.610:204.34:28-0.24:06-0.25:277:50New Moon10Mon
11Tue10:543.511:094.25:09-0.14:50-0.15:267:51Waxing Crescent11Tue
12Wed11:453.55:510.05:360.05:257:52Waxing Crescent12Wed
13Thu12:024.112:413.56:370.26:260.15:247:53Waxing Crescent13Thu
14Fri1:004.01:393.57:330.37:240.35:237:54First Quarter14Fri
15Sat2:013.92:393.68:580.48:390.55:227:55First Quarter15Sat
16Sun3:013.83:383.710:310.410:200.55:217:56First Quarter16Sun
17Mon4:033.74:403.911:280.311:490.45:207:57First Quarter17Mon
18Tue5:063.75:424.212:110.25:197:58Waxing Gibbous18Tue
19Wed6:093.76:404.512:500.212:480.15:187:59Waxing Gibbous19Wed
20Thu7:053.77:324.71:400.11:220.05:178:00Waxing Gibbous20Thu
21Fri7:553.88:204.82:260.01:580.05:178:01Full Moon21Fri
22Sat8:433.89:064.73:100.02:370.05:168:02Full Moon22Sat
23Sun9:293.79:514.63:520.03:180.05:158:03Full Moon23Sun
24Mon10:153.610:354.34:320.14:020.15:148:03Full Moon24Mon
25Tue11:003.511:204.05:090.24:460.35:148:04Waning Gibbous25Tue
26Wed11:473.35:460.35:300.45:138:05Waning Gibbous26Wed
27Thu12:073.712:353.26:240.56:140.65:128:06Waning Gibbous27Thu
28Fri12:543.41:243.07:060.67:030.85:128:07Waning Gibbous28Fri
29Sat1:423.22:123.07:560.88:010.95:118:08Third Quarter29Sat
30Sun2:273.02:583.08:560.89:161.05:118:09Third Quarter30Sun
31Mon3:102.93:443.09:540.810:360.95:108:09Third Quarter31Mon
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 8:51 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 13% 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 Waning Crescent (13% 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