Tides Today & Tomorrow in Chelsea, MA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Chelsea, MA.
Next low tide : in 2h 37m at 7:18 am (-1.2 ft)
Next high tide : 1:35 pm (10.4 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:21 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8443725
Common Questions About Tides

Chelsea, MA Tides - Mar 2057

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:2910.68:139.31:050.71:51-0.36:185:34Waning Crescent1Thu
2Fri8:3210.79:139.52:070.62:51-0.46:165:35Waning Crescent2Fri
3Sat9:3010.910:089.83:060.43:47-0.66:145:36New Moon3Sat
4Sun10:2310.910:5610.04:010.14:37-0.66:135:38New Moon4Sun
5Mon11:1210.911:4010.14:510.05:21-0.66:115:39New Moon5Mon
6Tue11:5610.75:37-0.16:03-0.46:095:40New Moon6Tue
7Wed12:2110.212:3810.46:21-0.16:43-0.16:085:41Waxing Crescent7Wed
8Thu1:0010.11:1910.07:040.17:240.26:065:42Waxing Crescent8Thu
9Fri1:399.92:019.57:470.38:060.66:045:43Waxing Crescent9Fri
10Sat2:209.72:459.18:330.58:501.06:035:45Waxing Crescent10Sat
11Sun4:029.54:318.710:200.810:371.57:016:46First Quarter11Sun
12Mon4:489.25:228.311:101.111:271.86:596:47First Quarter12Mon
13Tue5:408.96:198.012:041.36:576:48First Quarter13Tue
14Wed6:378.87:207.812:202.11:001.56:566:49First Quarter14Wed
15Thu7:378.88:197.91:172.21:571.46:546:50Waxing Gibbous15Thu
16Fri8:339.09:128.22:122.12:511.26:526:52Waxing Gibbous16Fri
17Sat9:249.39:598.63:051.83:410.96:516:53Waxing Gibbous17Sat
18Sun10:129.710:439.03:551.44:280.56:496:54Waxing Gibbous18Sun
19Mon10:5710.011:249.64:430.95:120.16:476:55Full Moon19Mon
20Tue11:4010.45:280.35:54-0.26:456:56Full Moon20Tue
21Wed12:0510.112:2310.76:13-0.26:36-0.56:446:57Full Moon21Wed
22Thu12:4610.61:0810.86:57-0.77:19-0.66:426:59Full Moon22Thu
23Fri1:2811.11:5410.87:44-1.08:04-0.66:407:00Waning Gibbous23Fri
24Sat2:1411.32:4410.68:34-1.18:53-0.46:387:01Waning Gibbous24Sat
25Sun3:0411.33:3710.39:27-1.09:45-0.16:377:02Waning Gibbous25Sun
26Mon3:5711.24:359.910:23-0.810:420.36:357:03Third Quarter26Mon
27Tue4:5510.95:389.511:22-0.511:420.76:337:04Third Quarter27Tue
28Wed5:5910.66:469.312:25-0.26:317:05Third Quarter28Wed
29Thu7:0910.47:579.312:460.91:310.06:307:07Waning Crescent29Thu
30Fri8:1810.49:019.51:510.92:340.06:287:08Waning Crescent30Fri
31Sat9:2110.49:599.82:550.83:340.06:267:09Waning Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8443725)

Common Questions About Chelsea, MA Tides

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

Slack tide in Chelsea, MA is approximately 10:26 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 Chelsea, MA?

Chelsea, MA is currently in a spring phase. Tonight's moon is 7% 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 Chelsea, 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 Chelsea, MA?

Tide predictions for Chelsea, 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 Chelsea, MA?

Tide data for Chelsea, MA is sourced from NOAA Station #8443725. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8443725.

What is the moon phase in Chelsea, MA tonight?

Tonight the moon over Chelsea, MA is Waxing Crescent (7% illuminated). This places Chelsea, 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