Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Onset Beach, MA.
Next low tide : 8:45 pm (1.1 ft)
Next high tide : in 2h 54m at 2:24 pm (3.6 ft)
Sunset today : 7:37 pm
Sunrise tomorrow : 5:55 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8447277
Common Questions About Tides

Onset Beach, MA Tides - Jul 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon3:343.24:073.89:540.311:120.65:118:21Third Quarter1Mon
2Tue4:343.25:084.110:520.25:118:21Waning Crescent2Tue
3Wed5:393.36:114.412:170.411:49 AM0.05:128:20Waning Crescent3Wed
4Thu6:423.57:114.71:150.212:45-0.25:128:20Waning Crescent4Thu
5Fri7:413.88:074.92:100.01:40-0.35:138:20New Moon5Fri
6Sat8:364.19:015.03:07-0.12:36-0.45:148:20New Moon6Sat
7Sun9:294.29:555.04:05-0.23:34-0.45:148:19New Moon7Sun
8Mon10:234.310:484.95:00-0.24:32-0.35:158:19Waxing Crescent8Mon
9Tue11:174.411:414.75:48-0.25:29-0.15:168:19Waxing Crescent9Tue
10Wed12:124.36:330.06:230.15:168:18Waxing Crescent10Wed
11Thu12:354.31:074.37:160.17:220.45:178:18Waxing Crescent11Thu
12Fri1:294.02:034.28:020.38:360.75:188:17First Quarter12Fri
13Sat2:223.62:574.08:500.510:100.85:198:17First Quarter13Sat
14Sun3:143.33:503.99:390.611:210.95:198:16First Quarter14Sun
15Mon4:083.14:473.810:270.75:208:16Waxing Gibbous15Mon
16Tue5:072.95:453.712:120.911:15 AM0.75:218:15Waxing Gibbous16Tue
17Wed6:072.96:403.712:530.812:010.75:228:14Waxing Gibbous17Wed
18Thu7:003.07:273.71:290.712:470.65:238:14Waxing Gibbous18Thu
19Fri7:463.18:093.82:050.61:320.55:248:13Waxing Gibbous19Fri
20Sat8:273.28:473.82:440.52:170.45:248:12Full Moon20Sat
21Sun9:053.39:233.93:250.43:020.45:258:11Full Moon21Sun
22Mon9:433.49:583.94:060.33:470.35:268:11Full Moon22Mon
23Tue10:203.410:333.84:430.34:300.35:278:10Full Moon23Tue
24Wed10:583.411:103.85:160.25:100.45:288:09Waning Gibbous24Wed
25Thu11:383.511:513.65:450.25:480.45:298:08Waning Gibbous25Thu
26Fri12:203.56:140.26:270.55:308:07Waning Gibbous26Fri
27Sat12:353.51:063.66:470.27:120.65:318:06Waning Gibbous27Sat
28Sun1:233.41:543.77:260.38:080.75:328:05Third Quarter28Sun
29Mon2:153.32:443.88:150.39:200.75:338:04Third Quarter29Mon
30Tue3:103.23:404.09:130.310:470.75:348:03Third Quarter30Tue
31Wed4:103.24:434.110:170.35:358:02Waning Crescent31Wed
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 5:34 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 46% 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 (46% 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