Tides Today & Tomorrow in Plymouth, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Plymouth, MA.
Next low tide (tomorrow) : in 2h 21m at 12:18 am (1.0 ft)
Next high tide (tomorrow) : 6:20 am (8.9 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:25 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8446493
Common Questions About Tides

Plymouth, MA Tides - Jul 1979

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:419.55:139.311:161.111:411.75:108:22First Quarter1Sun
2Mon5:319.36:029.312:051.35:118:21First Quarter2Mon
3Tue6:249.06:549.512:341.712:571.55:118:21First Quarter3Tue
4Wed7:198.97:469.71:291.61:481.55:128:21Waxing Gibbous4Wed
5Thu8:138.98:3710.02:221.32:391.55:128:21Waxing Gibbous5Thu
6Fri9:069.09:2610.43:130.93:281.35:138:21Waxing Gibbous6Fri
7Sat9:589.310:1610.84:040.54:171.15:148:20Waxing Gibbous7Sat
8Sun10:499.611:0611.34:540.05:070.85:148:20Full Moon8Sun
9Mon11:3910.011:5511.85:43-0.55:560.45:158:19Full Moon9Mon
10Tue12:2810.46:31-0.96:450.05:168:19Full Moon10Tue
11Wed12:4412.11:1710.87:19-1.27:35-0.25:168:19Waning Gibbous11Wed
12Thu1:3412.22:0711.08:09-1.38:27-0.45:178:18Waning Gibbous12Thu
13Fri2:2612.13:0011.29:00-1.39:22-0.55:188:18Waning Gibbous13Fri
14Sat3:2111.83:5411.39:52-1.110:17-0.45:198:17Waning Gibbous14Sat
15Sun4:1711.44:5011.210:46-0.811:15-0.35:208:16Third Quarter15Sun
16Mon5:1510.95:4711.111:41-0.45:208:16Third Quarter16Mon
17Tue6:1510.36:4710.912:14-0.112:380.05:218:15Third Quarter17Tue
18Wed7:199.87:4910.81:150.11:360.45:228:14Waning Crescent18Wed
19Thu8:239.58:4810.72:150.22:330.65:238:14Waning Crescent19Thu
20Fri9:249.39:4310.63:130.23:280.85:248:13Waning Crescent20Fri
21Sat10:209.210:3510.54:070.24:201.05:258:12Waning Crescent21Sat
22Sun11:119.211:2110.54:580.35:091.15:268:11New Moon22Sun
23Mon11:559.25:450.35:551.15:278:11New Moon23Mon
24Tue12:0310.412:339.26:270.36:381.15:278:10New Moon24Tue
25Wed12:4110.31:099.37:080.47:201.25:288:09New Moon25Wed
26Thu1:1910.31:469.37:490.48:021.25:298:08Waxing Crescent26Thu
27Fri1:5710.22:259.48:300.58:461.35:308:07Waxing Crescent27Fri
28Sat2:3810.03:069.59:120.79:311.35:318:06Waxing Crescent28Sat
29Sun3:229.83:509.59:560.910:181.45:328:05Waxing Crescent29Sun
30Mon4:089.64:359.610:411.111:061.55:338:04First Quarter30Mon
31Tue4:559.35:229.611:281.311:571.55:348:03First Quarter31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8446493)

Common Questions About Plymouth, MA Tides

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What time does the tide turn (slack tide) in Plymouth, MA today?

Slack tide in Plymouth, MA is approximately 3:19 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 Plymouth, MA?

Plymouth, 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 Plymouth, 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 Plymouth, MA?

Tide predictions for Plymouth, 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 Plymouth, MA?

Tide data for Plymouth, MA is sourced from NOAA Station #8446493. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8446493.

What is the moon phase in Plymouth, MA tonight?

Tonight the moon over Plymouth, MA is First Quarter (52% illuminated). This places Plymouth, 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