Tides Today & Tomorrow in Chatham, MA

TIDE TIMES for Thursday, July 30, 2026
The tide is currently falling in Chatham, MA.
Next low tide : in 36m at 7:48 pm (0.3 ft)
Next high tide (tomorrow) : 1:35 am (5.4 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 5:32 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #8447435
Common Questions About Tides

Chatham, MA Tides - Feb 2088

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:085.56:514.512:15-0.11:19-0.26:514:55First Quarter1Sun
2Mon7:135.67:574.61:19-0.12:24-0.36:504:56Waxing Gibbous2Mon
3Tue8:175.89:014.72:24-0.13:27-0.46:494:57Waxing Gibbous3Tue
4Wed9:205.910:015.03:28-0.14:26-0.66:484:58Waxing Gibbous4Wed
5Thu10:186.110:555.34:28-0.35:20-0.76:475:00Full Moon5Thu
6Fri11:126.211:465.55:25-0.46:10-0.86:455:01Full Moon6Fri
7Sat12:026.26:18-0.46:58-0.86:445:02Full Moon7Sat
8Sun12:345.612:516.17:10-0.57:43-0.76:435:04Waning Gibbous8Sun
9Mon1:215.61:405.87:59-0.48:27-0.66:425:05Waning Gibbous9Mon
10Tue2:085.62:295.58:48-0.49:09-0.46:415:06Waning Gibbous10Tue
11Wed2:555.43:195.19:36-0.39:51-0.36:395:07Waning Gibbous11Wed
12Thu3:425.24:114.710:24-0.210:34-0.16:385:09Third Quarter12Thu
13Fri4:315.05:054.411:16-0.111:190.06:375:10Third Quarter13Fri
14Sat5:224.86:024.112:100.06:355:11Third Quarter14Sat
15Sun6:174.67:003.912:090.21:060.06:345:12Third Quarter15Sun
16Mon7:124.67:563.91:020.22:010.06:335:14Waning Crescent16Mon
17Tue8:074.68:493.91:550.22:55-0.16:315:15Waning Crescent17Tue
18Wed8:584.79:394.12:490.23:45-0.26:305:16Waning Crescent18Wed
19Thu9:464.910:234.33:410.14:32-0.26:295:17Waning Crescent19Thu
20Fri10:295.111:024.64:300.05:15-0.36:275:19New Moon20Fri
21Sat11:085.311:384.85:17-0.15:56-0.46:265:20New Moon21Sat
22Sun11:465.46:02-0.26:36-0.46:245:21New Moon22Sun
23Mon12:125.112:245.56:47-0.37:15-0.46:235:22New Moon23Mon
24Tue12:485.41:055.67:32-0.47:54-0.46:215:24Waxing Crescent24Tue
25Wed1:265.61:495.58:18-0.48:34-0.46:205:25Waxing Crescent25Wed
26Thu2:095.72:375.39:07-0.49:17-0.36:185:26Waxing Crescent26Thu
27Fri2:565.83:305.19:59-0.410:04-0.36:175:27Waxing Crescent27Fri
28Sat3:485.84:274.910:56-0.310:59-0.16:155:28First Quarter28Sat
29Sun4:465.75:314.711:59-0.26:135:30First Quarter29Sun
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 10:41 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 Chatham, MA?

Chatham, MA is currently in a spring phase. Tonight's moon is 99% 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 Full Moon (99% 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