Tides Today & Tomorrow in Chelsea, MA

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in Chelsea, MA.
Next low tide (tomorrow) : in 5h 48m at 3:45 am (1.3 ft)
Next high tide (tomorrow) : 10:08 am (8.1 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:29 am
Moon phase : Waxing Gibbous (86% illuminated)
Tide Station Location : Station #8443725
Common Questions About Tides

Chelsea, MA Tides - Mar 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:3110.79:069.92:140.42:51-0.56:175:34Waning Crescent1Thu
2Fri9:2611.29:5810.63:10-0.23:44-1.06:155:35New Moon2Fri
3Sat10:2011.510:4911.24:04-0.94:35-1.46:145:37New Moon3Sat
4Sun11:1211.711:3811.74:57-1.45:23-1.66:125:38New Moon4Sun
5Mon12:0311.75:48-1.76:11-1.66:105:39Waxing Crescent5Mon
6Tue12:2611.912:5411.46:39-1.87:00-1.46:095:40Waxing Crescent6Tue
7Wed1:1611.91:4611.07:31-1.67:51-0.96:075:41Waxing Crescent7Wed
8Thu2:0811.62:4010.48:24-1.28:43-0.46:055:43Waxing Crescent8Thu
9Fri3:0211.13:369.89:20-0.79:380.36:045:44First Quarter9Fri
10Sat3:5810.64:379.210:17-0.110:350.86:025:45First Quarter10Sat
11Sun5:5910.06:428.812:170.47:006:46First Quarter11Sun
12Mon7:059.67:498.612:351.31:200.86:596:47First Quarter12Mon
13Tue8:109.58:508.61:371.52:211.06:576:49Waxing Gibbous13Tue
14Wed9:079.49:428.72:371.53:161.06:556:50Waxing Gibbous14Wed
15Thu9:589.410:288.93:301.44:041.06:536:51Waxing Gibbous15Thu
16Fri10:439.411:079.14:181.34:460.96:526:52Waxing Gibbous16Fri
17Sat11:229.511:429.35:011.05:240.86:506:53Full Moon17Sat
18Sun11:589.55:410.86:000.86:486:54Full Moon18Sun
19Mon12:159.512:339.56:180.66:350.76:476:55Full Moon19Mon
20Tue12:479.61:079.46:560.47:120.86:456:57Full Moon20Tue
21Wed1:209.81:439.47:340.37:500.86:436:58Waning Gibbous21Wed
22Thu1:569.92:229.38:150.38:300.96:416:59Waning Gibbous22Thu
23Fri2:359.93:059.18:590.39:141.16:407:00Waning Gibbous23Fri
24Sat3:199.93:529.09:470.410:021.26:387:01Waning Gibbous24Sat
25Sun4:079.94:438.810:380.510:541.36:367:02Third Quarter25Sun
26Mon5:019.85:418.811:330.511:511.36:347:03Third Quarter26Mon
27Tue6:019.86:448.912:320.56:337:05Third Quarter27Tue
28Wed7:0610.07:479.312:521.11:320.36:317:06Waning Crescent28Wed
29Thu8:1010.38:479.81:540.82:30-0.16:297:07Waning Crescent29Thu
30Fri9:1010.69:4210.52:530.23:25-0.46:277:08Waning Crescent30Fri
31Sat10:0811.010:3511.13:51-0.44:19-0.86:267:09Waning 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 6:56 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 Chelsea, MA?

Chelsea, MA is currently in a spring phase. Tonight's moon is 86% 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 Gibbous (86% 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