Tides Today & Tomorrow in Boston, MA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Boston, MA.
Next low tide : in 5h 41m at 9:58 pm (1.3 ft)
Next high tide (tomorrow) : 4:04 am (9.6 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8443970
Common Questions About Tides

Boston, MA Tides - Aug 2061

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:188.96:040.46:081.35:378:03Full Moon1Mon
2Tue12:2010.312:579.16:430.26:501.05:388:01Full Moon2Tue
3Wed1:0110.41:359.47:210.07:320.85:398:00Waning Gibbous3Wed
4Thu1:4210.42:139.78:000.08:150.65:407:59Waning Gibbous4Thu
5Fri2:2410.32:5310.08:410.09:010.45:417:58Waning Gibbous5Fri
6Sat3:0910.23:3510.29:230.19:500.45:427:57Waning Gibbous6Sat
7Sun3:579.94:2210.410:090.310:430.35:437:55Third Quarter7Sun
8Mon4:509.55:1310.511:000.611:410.45:447:54Third Quarter8Mon
9Tue5:489.26:0910.511:550.85:457:53Third Quarter9Tue
10Wed6:498.97:0910.512:410.412:531.05:467:51Waning Crescent10Wed
11Thu7:558.88:1210.61:440.31:551.15:477:50Waning Crescent11Thu
12Fri9:028.99:1710.82:480.12:581.05:487:48Waning Crescent12Fri
13Sat10:049.210:1711.03:50-0.14:000.85:497:47Waning Crescent13Sat
14Sun11:019.511:1311.14:47-0.44:570.55:517:46New Moon14Sun
15Mon11:549.85:40-0.65:500.25:527:44New Moon15Mon
16Tue12:0611.112:4310.06:29-0.66:410.15:537:43New Moon16Tue
17Wed12:5711.01:3010.17:15-0.57:300.15:547:41Waxing Crescent17Wed
18Thu1:4610.62:1410.17:59-0.18:180.35:557:40Waxing Crescent18Thu
19Fri2:3210.22:5610.08:420.39:050.55:567:38Waxing Crescent19Fri
20Sat3:199.73:399.89:250.89:530.95:577:37Waxing Crescent20Sat
21Sun4:069.14:259.510:101.310:441.25:587:35First Quarter21Sun
22Mon4:578.65:139.310:581.811:381.55:597:33First Quarter22Mon
23Tue5:518.26:059.111:482.26:007:32First Quarter23Tue
24Wed6:477.96:599.012:331.712:412.46:017:30First Quarter24Wed
25Thu7:467.87:569.01:301.81:362.56:027:29Waxing Gibbous25Thu
26Fri8:447.98:529.22:281.72:322.46:037:27Waxing Gibbous26Fri
27Sat9:378.19:439.63:211.43:252.16:047:25Waxing Gibbous27Sat
28Sun10:238.510:289.94:091.14:131.76:057:24Waxing Gibbous28Sun
29Mon11:048.911:1110.24:510.74:571.26:067:22Full Moon29Mon
30Tue11:439.411:5210.55:310.35:400.86:077:20Full Moon30Tue
31Wed12:219.86:100.06:230.36:087:19Full Moon31Wed
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 1:01 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 transitional phase. Tonight's moon is 72% 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 shifting between spring and neap.

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 Waning Gibbous (72% illuminated). This places Boston, MA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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