Tides Today & Tomorrow in Boston, MA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Boston, MA.
Next low tide : in 4h 03m at 7:17 am (-1.1 ft)
Next high tide : 1:33 pm (10.2 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:21 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8443970
Common Questions About Tides

Boston, MA Tides - Feb 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:2010.111:539.05:070.75:41-0.36:564:58Full Moon1Fri
2Sat11:5910.25:480.56:19-0.46:554:59Full Moon2Sat
3Sun12:319.212:3810.26:290.36:58-0.56:545:00Waning Gibbous3Sun
4Mon1:099.41:1910.27:100.27:38-0.46:535:01Waning Gibbous4Mon
5Tue1:489.62:0210.07:540.18:20-0.36:525:03Waning Gibbous5Tue
6Wed2:309.72:499.78:420.19:06-0.16:515:04Waning Gibbous6Wed
7Thu3:169.83:419.49:340.19:560.16:495:05Third Quarter7Thu
8Fri4:089.94:399.110:320.210:520.36:485:07Third Quarter8Fri
9Sat5:0410.05:418.911:320.111:500.56:475:08Third Quarter9Sat
10Sun6:0410.16:468.812:350.06:465:09Waning Crescent10Sun
11Mon7:0810.37:538.912:520.51:39-0.36:445:11Waning Crescent11Mon
12Tue8:1110.68:569.31:550.32:42-0.76:435:12Waning Crescent12Tue
13Wed9:1210.99:549.62:550.03:39-1.06:425:13New Moon13Wed
14Thu10:0811.210:479.93:52-0.34:32-1.36:405:14New Moon14Thu
15Fri11:0111.311:3710.24:45-0.65:22-1.46:395:16New Moon15Fri
16Sat11:5211.25:36-0.76:10-1.36:385:17New Moon16Sat
17Sun12:2510.212:4110.96:26-0.76:55-1.06:365:18Waxing Crescent17Sun
18Mon1:1110.21:2810.57:14-0.57:40-0.66:355:20Waxing Crescent18Mon
19Tue1:5510.02:159.98:02-0.28:250.06:335:21Waxing Crescent19Tue
20Wed2:409.73:039.38:510.39:110.66:325:22Waxing Crescent20Wed
21Thu3:269.43:548.79:420.710:001.16:305:23First Quarter21Thu
22Fri4:169.14:498.210:361.110:511.66:295:25First Quarter22Fri
23Sat5:088.85:467.911:321.311:441.86:275:26First Quarter23Sat
24Sun6:038.76:457.812:301.46:265:27First Quarter24Sun
25Mon7:008.87:447.812:391.91:271.36:245:28Waxing Gibbous25Mon
26Tue7:569.08:378.11:351.82:221.16:235:30Waxing Gibbous26Tue
27Wed8:479.39:238.42:271.63:090.76:215:31Waxing Gibbous27Wed
28Thu9:329.610:058.83:151.23:510.36:205:32Waxing Gibbous28Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8443970)

Common Questions About Boston, MA Tides

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What time does the tide turn (slack tide) in Boston, MA today?

Slack tide in Boston, MA is approximately 10:25 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 Boston, MA?

Boston, MA is currently in a spring phase. Tonight's moon is 7% 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 Boston, 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 Boston, MA?

Tide predictions for Boston, 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 Boston, MA?

Tide data for Boston, MA is sourced from NOAA Station #8443970. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8443970.

What is the moon phase in Boston, MA tonight?

Tonight the moon over Boston, MA is Waxing Crescent (7% illuminated). This places Boston, 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