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 39m 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 - Jan 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:594.58:193.91:35-0.32:48-0.27:094:22New Moon1Thu
2Fri8:454.49:063.92:22-0.33:24-0.27:094:23New Moon2Fri
3Sat9:294.29:513.73:07-0.33:56-0.27:094:23Waxing Crescent3Sat
4Sun10:123.910:363.63:51-0.24:28-0.17:104:24Waxing Crescent4Sun
5Mon10:553.611:213.44:320.05:02-0.17:094:25Waxing Crescent5Mon
6Tue11:393.35:140.15:380.17:094:26Waxing Crescent6Tue
7Wed12:063.212:223.05:580.36:170.27:094:27First Quarter7Wed
8Thu12:513.01:052.86:490.57:020.37:094:28First Quarter8Thu
9Fri1:352.91:492.67:540.77:560.47:094:29First Quarter9Fri
10Sat2:192.92:362.59:150.78:550.47:094:30First Quarter10Sat
11Sun3:072.83:302.510:300.69:550.37:094:31Waxing Gibbous11Sun
12Mon4:042.94:302.511:260.410:510.17:084:32Waxing Gibbous12Mon
13Tue5:023.15:272.812:130.27:084:33Waxing Gibbous13Tue
14Wed5:543.46:173.012:550.07:084:35Waxing Gibbous14Wed
15Thu6:403.77:043.312:29-0.31:36-0.27:074:36Full Moon15Thu
16Fri7:244.07:503.61:15-0.52:17-0.47:074:37Full Moon16Fri
17Sat8:094.28:363.92:01-0.62:57-0.57:064:38Full Moon17Sat
18Sun8:554.39:234.02:49-0.73:36-0.67:064:39Full Moon18Sun
19Mon9:424.310:124.13:37-0.74:15-0.77:054:40Waning Gibbous19Mon
20Tue10:314.111:044.14:24-0.64:53-0.67:054:42Waning Gibbous20Tue
21Wed11:243.911:584.15:12-0.55:35-0.57:044:43Waning Gibbous21Wed
22Thu12:193.76:05-0.26:21-0.37:034:44Third Quarter22Thu
23Fri12:554.01:173.57:080.17:17-0.17:034:45Third Quarter23Fri
24Sat1:533.92:163.38:480.38:250.17:024:46Third Quarter24Sat
25Sun2:543.83:193.210:370.39:470.17:014:48Third Quarter25Sun
26Mon4:013.84:273.211:430.211:050.17:004:49Waning Crescent26Mon
27Tue5:073.85:313.312:350.17:004:50Waning Crescent27Tue
28Wed6:064.06:273.512:010.01:200.06:594:51Waning Crescent28Wed
29Thu6:574.17:163.712:47-0.11:57-0.16:584:53New Moon29Thu
30Fri7:434.18:013.81:29-0.22:28-0.16:574:54New Moon30Fri
31Sat8:254.08:443.82:10-0.32:56-0.26:564:55New Moon31Sat
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