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 09m at 9:08 am (-0.2 ft)
Next high tide : 2:44 pm (4.8 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 1963

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:105.27:584.61:140.32:05-0.35:367:37First Quarter1Wed
2Thu8:145.08:554.72:160.33:00-0.25:357:38Waxing Gibbous2Thu
3Fri9:134.99:494.83:150.23:53-0.25:347:39Waxing Gibbous3Fri
4Sat10:094.810:385.04:120.14:41-0.25:327:40Waxing Gibbous4Sat
5Sun10:594.811:225.15:050.05:26-0.15:317:41Waxing Gibbous5Sun
6Mon11:454.85:53-0.16:060.05:307:42Waxing Gibbous6Mon
7Tue12:015.212:274.86:38-0.26:440.15:297:43Full Moon7Tue
8Wed12:375.31:074.77:20-0.37:210.25:287:44Full Moon8Wed
9Thu1:105.41:454.78:01-0.37:570.35:267:45Full Moon9Thu
10Fri1:425.42:224.68:41-0.28:330.35:257:46Full Moon10Fri
11Sat2:135.43:004.49:20-0.29:090.45:247:47Waning Gibbous11Sat
12Sun2:475.43:394.410:00-0.29:470.45:237:48Waning Gibbous12Sun
13Mon3:255.44:204.310:41-0.210:290.45:227:49Waning Gibbous13Mon
14Tue4:095.35:054.311:26-0.111:150.45:217:50Waning Gibbous14Tue
15Wed4:585.35:554.312:14-0.15:207:51Third Quarter15Wed
16Thu5:545.26:504.412:090.41:07-0.15:197:52Third Quarter16Thu
17Fri6:565.27:474.71:120.32:02-0.25:187:53Third Quarter17Fri
18Sat8:015.28:435.12:160.22:56-0.25:177:54Waning Crescent18Sat
19Sun9:035.39:385.53:210.03:51-0.25:167:55Waning Crescent19Sun
20Mon10:045.410:315.94:23-0.24:44-0.35:157:56Waning Crescent20Mon
21Tue11:025.511:236.35:24-0.55:38-0.35:147:57New Moon21Tue
22Wed11:585.66:22-0.76:30-0.35:147:58New Moon22Wed
23Thu12:146.612:515.67:17-0.87:21-0.25:137:59New Moon23Thu
24Fri1:046.71:445.68:12-0.88:13-0.15:128:00New Moon24Fri
25Sat1:546.72:395.49:05-0.89:060.05:118:01Waxing Crescent25Sat
26Sun2:486.53:355.29:58-0.79:590.15:118:02Waxing Crescent26Sun
27Mon3:436.14:335.010:50-0.610:530.25:108:03Waxing Crescent27Mon
28Tue4:405.85:314.911:43-0.511:490.35:098:03First Quarter28Tue
29Wed5:405.46:304.712:37-0.35:098:04First Quarter29Wed
30Thu6:425.17:284.712:470.31:30-0.25:088:05First Quarter30Thu
31Fri7:434.88:224.71:470.32:22-0.25:088:06First Quarter31Fri
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 11:56 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