Tides Today & Tomorrow in Chatham, MA

TIDE TIMES for Saturday, August 1, 2026
The tide is currently falling in Chatham, MA.
Next low tide : in 5h 26m at 9:12 pm (0.2 ft)
Next high tide (tomorrow) : 2:50 am (5.3 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 5:34 am
Moon phase : Waning Gibbous (91% illuminated)
Tide Station Location : Station #8447435
Common Questions About Tides

Chatham, MA Tides - May 1962

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:095.610:425.84:27-0.24:58-0.45:367:37Waning Crescent1Tue
2Wed11:085.811:346.25:27-0.55:51-0.45:357:38New Moon2Wed
3Thu12:035.86:24-0.66:41-0.45:337:39New Moon3Thu
4Fri12:236.412:555.87:18-0.87:30-0.35:327:40New Moon4Fri
5Sat1:116.51:465.78:11-0.88:19-0.25:317:41New Moon5Sat
6Sun1:596.52:395.59:03-0.89:07-0.15:307:42Waxing Crescent6Sun
7Mon2:496.33:325.39:53-0.79:560.15:287:43Waxing Crescent7Mon
8Tue3:406.04:265.010:43-0.510:450.25:277:44Waxing Crescent8Tue
9Wed4:325.65:224.711:34-0.411:360.35:267:45First Quarter9Wed
10Thu5:285.36:184.512:26-0.25:257:46First Quarter10Thu
11Fri6:264.97:154.412:300.41:18-0.15:247:47First Quarter11Fri
12Sat7:264.78:104.41:270.42:10-0.15:237:48First Quarter12Sat
13Sun8:244.69:024.52:240.42:59-0.15:227:49Waxing Gibbous13Sun
14Mon9:194.59:504.73:190.33:460.05:217:51Waxing Gibbous14Mon
15Tue10:114.510:354.84:120.14:320.05:207:52Waxing Gibbous15Tue
16Wed10:594.511:165.05:030.05:150.05:197:53Waxing Gibbous16Wed
17Thu11:424.611:525.25:51-0.15:570.15:187:54Waxing Gibbous17Thu
18Fri12:234.66:36-0.26:360.25:177:55Full Moon18Fri
19Sat12:255.41:014.77:20-0.37:160.25:167:55Full Moon19Sat
20Sun12:585.61:394.78:03-0.37:550.35:157:56Full Moon20Sun
21Mon1:335.72:184.78:46-0.38:370.35:147:57Waning Gibbous21Mon
22Tue2:115.83:004.79:30-0.39:200.35:137:58Waning Gibbous22Tue
23Wed2:545.93:464.710:15-0.410:070.25:137:59Waning Gibbous23Wed
24Thu3:435.84:354.711:02-0.310:580.25:128:00Waning Gibbous24Thu
25Fri4:375.75:304.811:53-0.311:550.25:118:01Third Quarter25Fri
26Sat5:365.66:284.912:48-0.35:118:02Third Quarter26Sat
27Sun6:405.47:295.112:590.11:44-0.35:108:03Third Quarter27Sun
28Mon7:465.38:285.32:050.02:41-0.35:098:04Waning Crescent28Mon
29Tue8:515.39:255.73:10-0.13:36-0.35:098:05Waning Crescent29Tue
30Wed9:535.310:216.04:13-0.34:31-0.35:088:05Waning Crescent30Wed
31Thu10:515.411:136.25:13-0.55:25-0.35:088:06Waning Crescent31Thu
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 12:01 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 spring phase. Tonight's moon is 91% 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 maximum.

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 Waning Gibbous (91% illuminated). This places Chatham, MA in a spring tide cycle, so tidal ranges are near their weekly maximum 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