Tides Today & Tomorrow in Chatham, MA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Chatham, MA.
Next low tide : 12:00 pm (0.3 ft)
Next high tide : in 3h 14m at 5:46 am (4.5 ft)
Sunset today : 7:34 pm
Sunrise tomorrow : 5:52 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8447435
Common Questions About Tides

Chatham, MA Tides - Nov 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:185.41:256.77:420.08:42-0.56:114:34Waxing Crescent1Tue
2Wed2:145.22:216.48:370.29:38-0.46:134:33Waxing Crescent2Wed
3Thu3:135.03:216.09:330.310:35-0.26:144:32First Quarter3Thu
4Fri4:164.84:265.710:330.411:35-0.16:154:31First Quarter4Fri
5Sat5:214.75:345.311:380.46:164:30First Quarter5Sat
6Sun6:264.76:435.112:350.012:430.46:184:28First Quarter6Sun
7Mon7:264.87:455.01:310.01:460.36:194:27Waxing Gibbous7Mon
8Tue8:214.98:434.92:240.02:460.16:204:26Waxing Gibbous8Tue
9Wed9:105.19:354.83:130.03:410.06:214:25Waxing Gibbous9Wed
10Thu9:555.310:234.83:580.14:32-0.16:224:24Waxing Gibbous10Thu
11Fri10:365.411:064.74:400.25:18-0.26:244:23Full Moon11Fri
12Sat11:135.511:474.75:180.36:01-0.26:254:22Full Moon12Sat
13Sun11:485.55:550.56:42-0.26:264:21Full Moon13Sun
14Mon12:264.612:215.56:310.67:22-0.16:274:20Full Moon14Mon
15Tue1:054.412:535.47:070.78:020.06:294:19Waning Gibbous15Tue
16Wed1:434.31:285.47:440.78:420.06:304:19Waning Gibbous16Wed
17Thu2:224.22:065.38:220.79:220.16:314:18Waning Gibbous17Thu
18Fri3:034.12:485.29:040.710:050.16:324:17Waning Gibbous18Fri
19Sat3:454.13:365.19:490.610:500.16:334:16Third Quarter19Sat
20Sun4:324.14:295.010:410.611:390.16:354:16Third Quarter20Sun
21Mon5:234.35:294.911:410.56:364:15Third Quarter21Mon
22Tue6:174.56:324.912:290.112:450.46:374:14Third Quarter22Tue
23Wed7:104.97:334.91:200.01:480.26:384:14Waning Crescent23Wed
24Thu8:025.48:335.02:100.02:50-0.16:394:13Waning Crescent24Thu
25Fri8:535.89:305.13:010.03:50-0.36:404:12Waning Crescent25Fri
26Sat9:446.310:255.23:520.04:48-0.56:424:12New Moon26Sat
27Sun10:356.611:185.34:45-0.15:44-0.66:434:12New Moon27Sun
28Mon11:266.85:370.06:38-0.76:444:11New Moon28Mon
29Tue12:105.312:176.86:300.07:33-0.76:454:11Waxing Crescent29Tue
30Wed1:035.21:106.67:250.18:26-0.66:464:10Waxing Crescent30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447435)

Common Questions About Chatham, MA Tides

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

Slack tide in Chatham, MA is approximately 8:53 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 Chatham, MA?

Chatham, 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 Chatham, 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 Chatham, MA?

Tide predictions for Chatham, 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 Chatham, MA?

Tide data for Chatham, MA is sourced from NOAA Station #8447435. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447435.

What is the moon phase in Chatham, MA tonight?

Tonight the moon over Chatham, MA is First Quarter (46% illuminated). This places Chatham, 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