Tides Today & Tomorrow in Chelsea, MA

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Chelsea, MA.
Next low tide (tomorrow) : 4:26 am (-0.6 ft)
Next high tide : in 4h 43m at 10:01 pm (11.3 ft)
Sunset today : 7:52 pm
Sunrise tomorrow : 5:46 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8443725
Common Questions About Tides

Chelsea, MA Tides - Jan 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:349.73:529.99:480.610:16-0.17:134:22Third Quarter1Tue
2Wed4:299.94:529.710:460.411:110.07:134:22Third Quarter2Wed
3Thu5:2710.25:569.611:460.27:134:23Third Quarter3Thu
4Fri6:2810.57:019.612:080.012:47-0.27:134:24Waning Crescent4Fri
5Sat7:2710.98:039.71:060.01:47-0.67:134:25Waning Crescent5Sat
6Sun8:2411.39:029.92:04-0.12:45-1.07:124:26Waning Crescent6Sun
7Mon9:2011.59:5910.13:00-0.23:41-1.37:124:27New Moon7Mon
8Tue10:1411.710:5310.23:55-0.34:35-1.57:124:28New Moon8Tue
9Wed11:0611.711:4310.24:47-0.35:25-1.57:124:29New Moon9Wed
10Thu11:5611.55:38-0.36:13-1.47:124:30New Moon10Thu
11Fri12:3210.212:4411.26:27-0.27:00-1.17:114:31Waxing Crescent11Fri
12Sat1:2010.11:3310.87:160.17:47-0.77:114:33Waxing Crescent12Sat
13Sun2:089.92:2110.38:060.48:35-0.37:114:34Waxing Crescent13Sun
14Mon2:559.73:119.78:570.79:230.27:104:35First Quarter14Mon
15Tue3:449.44:029.29:480.910:120.67:104:36First Quarter15Tue
16Wed4:349.24:568.710:411.211:021.07:094:37First Quarter16Wed
17Thu5:279.15:548.311:361.311:551.47:094:38First Quarter17Thu
18Fri6:229.06:538.212:321.37:084:40Waxing Gibbous18Fri
19Sat7:159.17:488.112:471.51:261.27:084:41Waxing Gibbous19Sat
20Sun8:049.28:388.21:381.62:171.07:074:42Waxing Gibbous20Sun
21Mon8:509.49:248.32:271.63:060.87:064:43Waxing Gibbous21Mon
22Tue9:339.610:078.53:141.43:510.57:064:45Waxing Gibbous22Tue
23Wed10:149.910:488.83:591.24:340.17:054:46Full Moon23Wed
24Thu10:5510.211:279.14:421.05:15-0.27:044:47Full Moon24Thu
25Fri11:3510.45:250.75:56-0.47:034:48Full Moon25Fri
26Sat12:069.412:1610.66:070.46:38-0.67:024:50Waning Gibbous26Sat
27Sun12:479.71:0010.76:520.27:22-0.77:014:51Waning Gibbous27Sun
28Mon1:3110.01:4710.67:400.08:08-0.77:014:52Waning Gibbous28Mon
29Tue2:1910.22:3810.48:32-0.18:58-0.67:004:54Waning Gibbous29Tue
30Wed3:0910.43:3310.19:26-0.29:50-0.46:594:55Third Quarter30Wed
31Thu4:0310.54:329.810:24-0.210:46-0.16:584:56Third Quarter31Thu
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 1:13 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 6% 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 Waning Crescent (6% 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