Tides Today & Tomorrow in Falmouth Harbor, MA

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Falmouth Harbor, MA.
Next low tide : in 1h 57m at 9:33 pm (0.1 ft)
Next high tide (tomorrow) : 3:40 am (1.3 ft)
Sunset today : 7:39 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8447865
Common Questions About Tides

Falmouth Harbor, MA Tides - Dec 1963

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:301.711:091.54:27-0.15:05-0.36:494:13Full Moon1Sun
2Mon11:221.75:18-0.15:57-0.36:504:13Waning Gibbous2Mon
3Tue12:041.512:161.76:10-0.16:50-0.26:514:13Waning Gibbous3Tue
4Wed12:591.41:101.67:040.07:44-0.26:524:12Waning Gibbous4Wed
5Thu1:551.42:061.57:580.08:39-0.16:534:12Waning Gibbous5Thu
6Fri2:521.33:041.48:560.19:360.06:544:12Third Quarter6Fri
7Sat3:521.34:061.49:570.210:350.16:544:12Third Quarter7Sat
8Sun4:521.35:091.310:590.211:320.16:554:12Third Quarter8Sun
9Mon5:501.36:101.312:010.26:564:12Third Quarter9Mon
10Tue6:451.37:091.212:270.11:010.26:574:12Waning Crescent10Tue
11Wed7:361.38:031.21:200.21:570.16:584:12Waning Crescent11Wed
12Thu8:221.38:511.22:090.22:460.16:594:12Waning Crescent12Thu
13Fri9:031.49:341.22:530.23:290.17:004:12Waning Crescent13Fri
14Sat9:411.410:151.23:340.24:090.07:004:12New Moon14Sat
15Sun10:191.410:541.24:130.24:480.07:014:13New Moon15Sun
16Mon10:561.411:331.24:520.25:260.07:024:13New Moon16Mon
17Tue11:351.45:320.26:050.07:034:13New Moon17Tue
18Wed12:131.212:141.46:120.26:450.07:034:14Waxing Crescent18Wed
19Thu12:521.212:541.46:530.27:260.07:044:14Waxing Crescent19Thu
20Fri1:331.21:361.47:350.28:090.07:044:14Waxing Crescent20Fri
21Sat2:151.22:211.48:220.28:540.07:054:15Waxing Crescent21Sat
22Sun3:021.23:111.39:120.29:440.07:054:15First Quarter22Sun
23Mon3:511.34:061.310:070.210:360.07:064:16First Quarter23Mon
24Tue4:441.35:041.311:050.111:300.07:064:16First Quarter24Tue
25Wed5:381.46:051.312:050.17:074:17Waxing Gibbous25Wed
26Thu6:341.47:061.312:260.01:050.07:074:18Waxing Gibbous26Thu
27Fri7:311.58:071.41:230.02:05-0.17:074:18Waxing Gibbous27Fri
28Sat8:271.69:051.42:200.03:02-0.27:084:19Waxing Gibbous28Sat
29Sun9:211.610:001.43:15-0.13:56-0.27:084:20Full Moon29Sun
30Mon10:141.710:551.44:08-0.14:49-0.37:084:20Full Moon30Mon
31Tue11:071.711:501.45:01-0.15:41-0.37:084:21Full Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447865)

Common Questions About Falmouth Harbor, MA Tides

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

Slack tide in Falmouth Harbor, MA is approximately 12:36 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 Falmouth Harbor, MA?

Falmouth Harbor, MA is currently in a transitional phase. Tonight's moon is 27% 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 shifting between spring and neap.

What datum are Falmouth Harbor, 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 Falmouth Harbor, MA?

Tide predictions for Falmouth Harbor, 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 Falmouth Harbor, MA?

Tide data for Falmouth Harbor, MA is sourced from NOAA Station #8447865. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447865.

What is the moon phase in Falmouth Harbor, MA tonight?

Tonight the moon over Falmouth Harbor, MA is Waxing Crescent (27% illuminated). This places Falmouth Harbor, MA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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