Tides Today & Tomorrow in Chelsea, MA

TIDE TIMES for Thursday, August 13, 2026
The tide is currently falling in Chelsea, MA.
Next low tide : in 2h 59m at 6:10 am (-0.9 ft)
Next high tide : 12:27 pm (10.4 ft)
Sunset today : 7:48 pm
Sunrise tomorrow : 5:49 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8443725
Common Questions About Tides

Chelsea, MA Tides - Feb 2096

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:2610.64:589.510:47-0.211:070.26:574:57First Quarter1Wed
2Thu5:2610.56:059.111:49-0.26:564:59First Quarter2Thu
3Fri6:3010.57:149.012:070.512:53-0.26:545:00Waxing Gibbous3Fri
4Sat7:3410.68:189.01:080.71:56-0.26:535:01Waxing Gibbous4Sat
5Sun8:3410.69:189.12:080.82:57-0.36:525:03Waxing Gibbous5Sun
6Mon9:3210.710:149.23:070.73:53-0.46:515:04Full Moon6Mon
7Tue10:2410.711:039.34:010.64:43-0.46:505:05Full Moon7Tue
8Wed11:1210.611:469.44:510.65:27-0.46:495:07Full Moon8Wed
9Thu11:5510.45:360.56:08-0.36:475:08Full Moon9Thu
10Fri12:279.412:3610.26:190.66:47-0.16:465:09Waning Gibbous10Fri
11Sat1:059.41:179.97:010.67:270.26:455:11Waning Gibbous11Sat
12Sun1:439.31:579.57:450.88:080.56:435:12Waning Gibbous12Sun
13Mon2:229.32:409.18:300.98:500.96:425:13Waning Gibbous13Mon
14Tue3:039.23:258.79:171.19:351.26:415:14Third Quarter14Tue
15Wed3:479.04:148.310:061.210:231.66:395:16Third Quarter15Wed
16Thu4:368.95:097.910:581.411:141.96:385:17Third Quarter16Thu
17Fri5:298.86:097.711:541.46:375:18Third Quarter17Fri
18Sat6:278.87:097.712:082.112:511.46:355:20Waning Crescent18Sat
19Sun7:239.08:047.91:032.11:461.26:345:21Waning Crescent19Sun
20Mon8:159.38:558.21:571.92:390.86:325:22Waning Crescent20Mon
21Tue9:059.79:428.62:481.63:280.46:315:23Waning Crescent21Tue
22Wed9:5210.210:279.23:381.14:15-0.16:295:25New Moon22Wed
23Thu10:3810.611:109.74:250.54:59-0.66:285:26New Moon23Thu
24Fri11:2411.011:5310.35:120.05:42-0.96:265:27New Moon24Fri
25Sat12:1011.25:59-0.56:26-1.16:255:28Waxing Crescent25Sat
26Sun12:3710.812:5811.16:47-0.87:12-1.16:235:30Waxing Crescent26Sun
27Mon1:2411.11:4810.97:37-1.08:01-0.96:215:31Waxing Crescent27Mon
28Tue2:1311.22:4210.58:31-1.08:52-0.56:205:32Waxing Crescent28Tue
29Wed3:0611.13:399.99:28-0.89:470.06:185:33First Quarter29Wed
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 9:18 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 1% 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 New Moon (1% 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