Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 1h 42m at 8:23 am (0.6 ft)
Next high tide : 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 - Mar 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:403.78:573.82:35-0.22:50-0.26:165:33New Moon1Mon
2Tue9:163.69:333.73:13-0.33:22-0.36:155:34New Moon2Tue
3Wed9:513.410:073.53:50-0.23:56-0.36:135:35Waxing Crescent3Wed
4Thu10:273.210:413.34:27-0.24:30-0.26:115:36Waxing Crescent4Thu
5Fri11:043.011:183.25:020.05:04-0.16:105:37Waxing Crescent5Fri
6Sat11:442.811:583.05:390.25:400.16:085:39Waxing Crescent6Sat
7Sun12:292.76:190.46:210.26:075:40First Quarter7Sun
8Mon12:432.91:172.67:080.67:120.36:055:41First Quarter8Mon
9Tue1:342.92:102.68:190.68:170.46:035:42First Quarter9Tue
10Wed2:312.93:102.79:510.69:320.36:025:43First Quarter10Wed
11Thu3:353.14:143.010:590.310:430.16:005:44Waxing Gibbous11Thu
12Fri4:433.35:173.411:480.111:44-0.25:585:45Waxing Gibbous12Fri
13Sat5:433.76:123.812:30-0.25:575:47Waxing Gibbous13Sat
14Sun6:364.07:034.312:38-0.51:12-0.55:555:48Full Moon14Sun
15Mon7:264.37:524.71:30-0.81:55-0.75:535:49Full Moon15Mon
16Tue8:164.58:414.92:22-0.92:39-0.95:515:50Full Moon16Tue
17Wed9:054.59:314.93:14-0.93:24-0.95:505:51Full Moon17Wed
18Thu9:564.310:234.84:04-0.84:08-0.85:485:52Waning Gibbous18Thu
19Fri10:484.111:174.54:53-0.64:52-0.65:465:53Waning Gibbous19Fri
20Sat11:443.85:42-0.35:38-0.25:455:54Waning Gibbous20Sat
21Sun12:154.212:423.66:400.16:310.15:435:55Third Quarter21Sun
22Mon1:143.91:423.48:310.47:400.45:415:57Third Quarter22Mon
23Tue2:153.62:433.310:070.510:040.65:405:58Third Quarter23Tue
24Wed3:193.43:483.211:090.511:180.55:385:59Waning Crescent24Wed
25Thu4:263.34:523.311:540.45:366:00Waning Crescent25Thu
26Fri5:253.45:473.512:040.412:260.35:346:01Waning Crescent26Fri
27Sat6:153.56:343.712:380.312:480.25:336:02Waning Crescent27Sat
28Sun6:583.57:163.81:070.11:110.15:316:03New Moon28Sun
29Mon7:363.67:533.91:390.01:390.05:296:04New Moon29Mon
30Tue8:123.68:283.92:15-0.12:13-0.15:286:05New Moon30Tue
31Wed8:473.59:013.82:53-0.22:48-0.25:266:07New Moon31Wed
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 11:42 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 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