Tides Today & Tomorrow in Chelsea, MA

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in Chelsea, MA.
Next low tide : in 2h 58m at 3:54 pm (0.7 ft)
Next high tide : 10:12 pm (11.5 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:18 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8443725
Common Questions About Tides

Chelsea, MA Tides - Jan 1995

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:3812.011:1510.54:20-0.54:59-1.77:134:21New Moon1Sun
2Mon11:3012.05:12-0.75:49-1.87:134:22New Moon2Mon
3Tue12:0710.612:2111.86:04-0.76:38-1.67:134:23Waxing Crescent3Tue
4Wed12:5710.61:1211.46:55-0.57:27-1.37:134:24Waxing Crescent4Wed
5Thu1:4710.52:0310.87:47-0.28:16-0.87:134:25Waxing Crescent5Thu
6Fri2:3710.32:5510.28:400.19:06-0.37:134:26First Quarter6Fri
7Sat3:2810.03:489.69:330.49:560.27:134:27First Quarter7Sat
8Sun4:209.74:439.010:270.810:470.77:134:28First Quarter8Sun
9Mon5:149.55:428.611:231.011:401.17:124:29First Quarter9Mon
10Tue6:109.36:428.312:201.17:124:30First Quarter10Tue
11Wed7:059.37:398.212:341.41:151.17:124:31Waxing Gibbous11Wed
12Thu7:569.38:308.21:261.62:071.07:114:32Waxing Gibbous12Thu
13Fri8:439.49:178.32:161.62:560.97:114:33Waxing Gibbous13Fri
14Sat9:269.610:008.43:031.53:410.77:114:35Waxing Gibbous14Sat
15Sun10:079.710:408.63:481.44:230.47:104:36Full Moon15Sun
16Mon10:469.911:178.94:311.25:030.27:104:37Full Moon16Mon
17Tue11:2410.111:549.15:120.95:42-0.17:094:38Full Moon17Tue
18Wed12:0210.25:530.76:22-0.27:094:39Full Moon18Wed
19Thu12:329.412:4210.36:350.57:03-0.37:084:40Waning Gibbous19Thu
20Fri1:129.71:2610.27:200.37:46-0.37:084:42Waning Gibbous20Fri
21Sat1:559.92:1310.18:080.28:33-0.37:074:43Waning Gibbous21Sat
22Sun2:4210.13:039.98:590.19:22-0.17:064:44Third Quarter22Sun
23Mon3:3310.33:589.69:540.010:150.07:054:45Third Quarter23Mon
24Tue4:2810.44:599.410:520.011:120.27:054:47Third Quarter24Tue
25Wed5:2810.56:059.211:53-0.17:044:48Third Quarter25Wed
26Thu6:3210.67:119.312:120.312:55-0.37:034:49Waning Crescent26Thu
27Fri7:3410.98:149.51:120.21:56-0.67:024:51Waning Crescent27Fri
28Sat8:3411.29:149.82:120.12:55-0.97:014:52Waning Crescent28Sat
29Sun9:3211.410:0910.13:10-0.13:51-1.27:004:53New Moon29Sun
30Mon10:2611.511:0110.44:05-0.44:43-1.36:594:54New Moon30Mon
31Tue11:1711.511:4910.54:58-0.55:31-1.36:584:56New Moon31Tue
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 7:03 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 Chelsea, MA?

Chelsea, MA is currently in a spring phase. Tonight's moon is 5% 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 (5% 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