Tides Today & Tomorrow in Chelsea, MA

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently rising in Chelsea, MA.
Next low tide : 4:38 pm (0.3 ft)
Next high tide : in 5h 37m at 10:43 am (9.7 ft)
Sunset today : 7:51 pm
Sunrise tomorrow : 5:47 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8443725
Common Questions About Tides

Chelsea, MA Tides - Oct 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:4910.75:39-0.26:01-0.46:426:24New Moon1Wed
2Thu12:1110.812:3111.16:22-0.46:47-0.96:436:22New Moon2Thu
3Fri12:5711.01:1611.57:06-0.57:34-1.16:446:20Waxing Crescent3Fri
4Sat1:4410.92:0311.67:53-0.58:24-1.26:456:19Waxing Crescent4Sat
5Sun2:3510.82:5411.68:43-0.39:18-1.16:466:17Waxing Crescent5Sun
6Mon3:3010.53:4911.49:370.010:15-0.86:486:15First Quarter6Mon
7Tue4:2810.14:4911.110:350.311:14-0.56:496:13First Quarter7Tue
8Wed5:319.85:5410.811:360.66:506:12First Quarter8Wed
9Thu6:409.77:0310.512:17-0.212:400.76:516:10First Quarter9Thu
10Fri7:489.88:1110.51:21-0.11:450.76:526:08Waxing Gibbous10Fri
11Sat8:5110.09:1210.52:230.02:470.66:536:07Waxing Gibbous11Sat
12Sun9:4610.210:0810.53:200.03:450.46:546:05Waxing Gibbous12Sun
13Mon10:3610.410:5810.44:130.04:370.26:566:04Full Moon13Mon
14Tue11:2110.511:4410.35:000.15:240.16:576:02Full Moon14Tue
15Wed12:0110.55:420.36:060.06:586:00Full Moon15Wed
16Thu12:2510.112:3810.46:210.56:450.16:595:59Full Moon16Thu
17Fri1:039.81:1410.26:590.77:240.27:005:57Waning Gibbous17Fri
18Sat1:409.51:5010.07:381.08:050.47:015:56Waning Gibbous18Sat
19Sun2:199.22:289.88:191.38:480.67:035:54Waning Gibbous19Sun
20Mon3:009.03:119.69:031.69:340.87:045:53Waning Gibbous20Mon
21Tue3:458.73:569.39:501.910:231.17:055:51Third Quarter21Tue
22Wed4:348.54:479.110:402.111:141.27:065:50Third Quarter22Wed
23Thu5:278.45:429.011:342.27:075:48Third Quarter23Thu
24Fri6:258.46:418.912:081.312:302.17:095:47Third Quarter24Fri
25Sat7:238.67:399.11:031.31:261.97:105:45Waning Crescent25Sat
26Sun8:169.08:349.41:571.12:201.57:115:44Waning Crescent26Sun
27Mon9:049.59:249.82:470.83:110.97:125:42Waning Crescent27Mon
28Tue9:5010.110:1310.23:350.44:010.37:135:41Waning Crescent28Tue
29Wed10:3510.711:0110.54:220.14:50-0.47:155:40New Moon29Wed
30Thu11:2011.311:4810.85:09-0.35:37-1.07:165:38New Moon30Thu
31Fri12:0511.85:55-0.56:25-1.57:175:37New Moon31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8443725)

Common Questions About Chelsea, MA Tides

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

Slack tide in Chelsea, MA is approximately 1:40 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 2% 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 (2% 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