Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Monday, July 20, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide (tomorrow) : 8:23 am (0.6 ft)
Next high tide (tomorrow) : in 4h 28m at 2:26 am (3.3 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:25 am
Moon phase : First Quarter (42% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Apr 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:223.49:333.73:30-0.23:24-0.15:246:08New Moon1Thu
2Fri9:573.310:073.54:06-0.13:59-0.15:236:09Waxing Crescent2Fri
3Sat10:353.110:433.44:400.04:340.05:216:10Waxing Crescent3Sat
4Sun11:163.011:243.25:140.25:100.15:196:11Waxing Crescent4Sun
5Mon12:022.95:500.35:510.35:176:12Waxing Crescent5Mon
6Tue12:123.212:522.96:330.56:400.45:166:13First Quarter6Tue
7Wed1:053.11:462.97:320.67:430.45:146:14First Quarter7Wed
8Thu2:023.22:423.18:500.59:000.45:136:15First Quarter8Thu
9Fri3:033.33:443.310:060.410:170.25:116:16Waxing Gibbous9Fri
10Sat4:103.44:473.711:030.111:24-0.15:096:17Waxing Gibbous10Sat
11Sun5:143.75:464.211:52-0.25:086:19Waxing Gibbous11Sun
12Mon6:124.06:404.712:21-0.412:37-0.55:066:20Waxing Gibbous12Mon
13Tue7:054.37:315.01:15-0.61:22-0.75:046:21Full Moon13Tue
14Wed7:564.48:215.22:08-0.72:09-0.75:036:22Full Moon14Wed
15Thu8:474.59:125.23:02-0.82:57-0.75:016:23Full Moon15Thu
16Fri9:384.410:045.03:53-0.73:45-0.65:006:24Waning Gibbous16Fri
17Sat10:314.210:584.74:42-0.54:33-0.44:586:25Waning Gibbous17Sat
18Sun11:264.011:554.35:31-0.25:200.04:576:26Waning Gibbous18Sun
19Mon12:243.76:240.26:130.34:556:27Third Quarter19Mon
20Tue12:533.91:223.67:460.47:200.64:546:28Third Quarter20Tue
21Wed1:513.62:213.49:250.69:400.84:526:29Third Quarter21Wed
22Thu2:503.43:213.410:240.610:520.74:516:31Third Quarter22Thu
23Fri3:513.24:223.411:050.611:370.64:496:32Waning Crescent23Fri
24Sat4:503.25:183.511:320.54:486:33Waning Crescent24Sat
25Sun6:423.27:053.712:100.512:570.45:467:34Waning Crescent25Sun
26Mon7:263.37:463.81:420.41:270.35:457:35Waning Crescent26Mon
27Tue8:063.48:233.92:160.22:010.15:437:36New Moon27Tue
28Wed8:423.48:573.92:530.12:370.05:427:37New Moon28Wed
29Thu9:183.49:303.93:320.03:150.05:417:38New Moon29Thu
30Fri9:543.410:033.84:110.03:540.05:397:39New Moon30Fri
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 5:24 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 42% 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 (42% 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