Tides Today & Tomorrow in Onset Beach, MA

TIDE TIMES for Monday, July 20, 2026
The tide is currently falling in Onset Beach, MA.
Next low tide : in 2h 10m at 7:40 am (0.4 ft)
Next high tide : 2:11 pm (4.0 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 - May 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:313.310:393.74:470.04:320.15:387:40Waxing Crescent1Sat
2Sun11:103.311:173.65:210.15:090.15:377:41Waxing Crescent2Sun
3Mon11:533.25:540.25:470.25:357:43Waxing Crescent3Mon
4Tue12:013.512:413.26:290.36:290.35:347:44Waxing Crescent4Tue
5Wed12:503.51:323.27:100.47:180.45:337:45First Quarter5Wed
6Thu1:443.42:253.38:020.48:190.55:327:46First Quarter6Thu
7Fri2:393.43:203.59:070.49:350.55:307:47First Quarter7Fri
8Sat3:383.54:193.810:170.310:550.35:297:48First Quarter8Sat
9Sun4:413.65:214.111:200.15:287:49Waxing Gibbous9Sun
10Mon5:473.76:224.512:070.112:14-0.15:277:50Waxing Gibbous10Mon
11Tue6:483.97:184.81:07-0.21:04-0.35:267:51Waxing Gibbous11Tue
12Wed7:444.28:115.12:01-0.41:53-0.55:257:52Full Moon12Wed
13Thu8:374.39:035.22:55-0.52:43-0.55:247:53Full Moon13Thu
14Fri9:294.49:555.23:50-0.53:34-0.55:237:54Full Moon14Fri
15Sat10:214.310:465.04:43-0.44:25-0.35:227:55Waning Gibbous15Sat
16Sun11:134.211:394.65:31-0.35:15-0.15:217:56Waning Gibbous16Sun
17Mon12:074.16:160.06:030.15:207:57Waning Gibbous17Mon
18Tue12:334.31:033.97:000.26:540.45:197:58Waning Gibbous18Tue
19Wed1:283.91:593.77:510.47:540.75:187:59Third Quarter19Wed
20Thu2:223.62:533.68:530.69:260.95:178:00Third Quarter20Thu
21Fri3:153.33:473.59:570.711:000.95:168:01Third Quarter21Fri
22Sat4:093.14:433.510:450.711:530.85:168:02Third Quarter22Sat
23Sun5:043.05:393.511:260.65:158:03Waning Crescent23Sun
24Mon5:593.06:293.612:340.712:060.55:148:04Waning Crescent24Mon
25Tue6:483.17:123.71:120.512:450.45:138:05Waning Crescent25Tue
26Wed7:313.27:513.81:490.41:250.25:138:05Waning Crescent26Wed
27Thu8:103.38:263.92:290.22:050.25:128:06New Moon27Thu
28Fri8:483.49:013.93:100.22:450.15:128:07New Moon28Fri
29Sat9:263.49:374.03:510.13:260.15:118:08New Moon29Sat
30Sun10:063.510:164.04:300.14:070.15:108:09New Moon30Sun
31Mon10:483.510:573.95:050.14:480.15:108:10Waxing Crescent31Mon
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 10:55 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