Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide : 2:58 pm (-0.2 ft)
Next high tide : in 2h 18m at 8:41 am (4.4 ft)
Sunset today : 7:47 pm
Sunrise tomorrow : 5:48 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Mar 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:073.68:283.62:06-0.32:51-0.37:186:32Full Moon1Sun
2Mon8:463.89:093.82:49-0.53:26-0.47:166:33Full Moon2Mon
3Tue9:273.99:514.03:32-0.64:01-0.57:146:34Full Moon3Tue
4Wed10:104.010:354.14:15-0.74:36-0.67:136:35Full Moon4Wed
5Thu10:554.011:224.14:58-0.75:12-0.67:116:37Waning Gibbous5Thu
6Fri11:443.85:40-0.65:51-0.57:096:38Waning Gibbous6Fri
7Sat12:124.112:373.76:25-0.46:33-0.47:086:39Waning Gibbous7Sat
8Sun1:064.01:333.57:16-0.17:22-0.27:066:40Third Quarter8Sun
9Mon2:043.92:323.38:210.18:230.17:056:41Third Quarter9Mon
10Tue3:043.83:343.310:100.39:410.27:036:42Third Quarter10Tue
11Wed4:093.74:403.311:530.311:190.27:016:43Waning Crescent11Wed
12Thu5:193.85:483.512:530.17:006:45Waning Crescent12Thu
13Fri6:243.96:493.712:390.11:400.06:586:46Waning Crescent13Fri
14Sat7:214.17:434.01:34-0.12:19-0.16:566:47Waning Crescent14Sat
15Sun8:104.28:314.22:21-0.22:52-0.26:556:48New Moon15Sun
16Mon8:564.29:164.33:03-0.33:22-0.36:536:49New Moon16Mon
17Tue9:394.19:594.33:44-0.43:53-0.36:516:50New Moon17Tue
18Wed10:214.010:414.14:22-0.34:25-0.36:496:51New Moon18Wed
19Thu11:023.711:223.94:59-0.34:59-0.26:486:52Waxing Crescent19Thu
20Fri11:443.55:35-0.15:35-0.16:466:54Waxing Crescent20Fri
21Sat12:033.612:263.26:120.16:120.06:446:55Waxing Crescent21Sat
22Sun12:443.31:112.96:520.36:520.26:436:56Waxing Crescent22Sun
23Mon1:273.01:562.77:380.57:390.46:416:57First Quarter23Mon
24Tue2:112.92:432.68:380.78:360.66:396:58First Quarter24Tue
25Wed2:582.73:332.610:040.79:460.66:376:59First Quarter25Wed
26Thu3:512.74:302.611:240.711:000.56:367:00First Quarter26Thu
27Fri4:532.85:302.812:170.56:347:01Waxing Gibbous27Fri
28Sat5:543.06:253.112:030.312:580.36:327:02Waxing Gibbous28Sat
29Sun6:473.37:133.512:550.11:340.06:317:04Waxing Gibbous29Sun
30Mon7:333.67:583.91:41-0.22:10-0.26:297:05Waxing Gibbous30Mon
31Tue8:183.98:424.32:26-0.42:46-0.46:277:06Full Moon31Tue
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 11:49 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 0% 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 (0% 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