Tides Today & Tomorrow in Falmouth Harbor, MA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Falmouth Harbor, MA.
Next low tide : 10:25 pm (0.1 ft)
Next high tide : in 54m at 3:59 pm (1.4 ft)
Sunset today : 7:37 pm
Sunrise tomorrow : 5:54 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8447865
Common Questions About Tides

Falmouth Harbor, MA Tides - May 1962

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:041.59:351.52:590.03:27-0.15:397:39Waning Crescent1Tue
2Wed10:021.510:271.63:57-0.14:20-0.15:387:40New Moon2Wed
3Thu10:571.511:171.64:51-0.25:11-0.15:367:41New Moon3Thu
4Fri11:501.55:43-0.26:01-0.15:357:42New Moon4Fri
5Sat12:061.712:421.56:34-0.26:50-0.15:347:43New Moon5Sat
6Sun12:551.61:331.57:24-0.27:390.05:337:44Waxing Crescent6Sun
7Mon1:441.62:241.48:14-0.18:280.15:317:45Waxing Crescent7Mon
8Tue2:341.53:161.49:04-0.19:190.15:307:47Waxing Crescent8Tue
9Wed3:251.44:091.39:570.010:120.25:297:48First Quarter9Wed
10Thu4:191.45:051.310:510.111:080.25:287:49First Quarter10Thu
11Fri5:161.36:011.211:470.15:277:50First Quarter11Fri
12Sat6:141.36:561.212:060.312:410.25:267:51First Quarter12Sat
13Sun7:111.27:491.21:030.31:340.25:257:52Waxing Gibbous13Sun
14Mon8:071.28:381.31:590.22:250.25:247:53Waxing Gibbous14Mon
15Tue9:001.39:231.32:520.23:120.25:237:54Waxing Gibbous15Tue
16Wed9:471.310:041.43:400.23:560.25:227:55Waxing Gibbous16Wed
17Thu10:291.310:421.44:240.14:360.15:217:56Waxing Gibbous17Thu
18Fri11:101.311:191.45:050.15:160.15:207:57Full Moon18Fri
19Sat11:501.311:571.55:450.05:550.15:197:58Full Moon19Sat
20Sun12:311.36:260.06:360.15:187:59Full Moon20Sun
21Mon12:371.51:131.37:080.07:180.15:178:00Waning Gibbous21Mon
22Tue1:181.51:561.37:510.08:020.15:168:01Waning Gibbous22Tue
23Wed2:021.52:421.38:360.08:490.15:168:01Waning Gibbous23Wed
24Thu2:491.53:311.39:240.09:400.15:158:02Waning Gibbous24Thu
25Fri3:411.54:251.310:170.010:370.15:148:03Third Quarter25Fri
26Sat4:381.45:221.411:130.011:370.15:148:04Third Quarter26Sat
27Sun5:381.46:201.412:100.05:138:05Third Quarter27Sun
28Mon6:411.47:191.412:390.11:080.05:128:06Waning Crescent28Mon
29Tue7:441.48:181.51:400.02:060.05:128:07Waning Crescent29Tue
30Wed8:471.49:141.62:420.03:030.05:118:07Waning Crescent30Wed
31Thu9:461.410:061.63:40-0.13:580.05:118:08Waning Crescent31Thu
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 7:12 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 Falmouth Harbor, MA?

Falmouth Harbor, MA is currently in a transitional phase. Tonight's moon is 36% 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 First Quarter (36% 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