Tides Today & Tomorrow in Charlestown, Charles River, MA

TIDE TIMES for Saturday, August 8, 2026
The tide is currently falling in Charlestown, Charles River, MA.
Next low tide (tomorrow) : in 5h 06m at 2:19 am (0.3 ft)
Next high tide (tomorrow) : 8:29 am (8.8 ft)
Sunset today : 7:55 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waning Crescent (22% illuminated)
Tide Station Location : Station #8443838
Common Questions About Tides

Charlestown, Charles River, MA Tides - May 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:2410.610:4311.74:15-0.94:33-0.55:397:43New Moon1Sat
2Sun11:1810.711:3312.05:08-1.55:24-0.75:387:44New Moon2Sun
3Mon12:1110.86:01-1.86:15-0.65:367:45New Moon3Mon
4Tue12:2412.11:0510.66:53-1.87:06-0.45:357:46Waxing Crescent4Tue
5Wed1:1712.02:0010.37:46-1.67:58-0.15:347:47Waxing Crescent5Wed
6Thu2:1111.62:5510.08:39-1.18:520.35:337:48Waxing Crescent6Thu
7Fri3:0611.13:529.69:33-0.69:480.85:317:49Waxing Crescent7Fri
8Sat4:0310.44:519.310:310.010:481.35:307:50First Quarter8Sat
9Sun5:059.95:529.111:300.611:511.55:297:51First Quarter9Sun
10Mon6:079.46:509.012:281.05:287:52First Quarter10Mon
11Tue7:099.17:469.112:531.61:241.35:277:53First Quarter11Tue
12Wed8:098.98:389.31:541.62:181.45:257:55Waxing Gibbous12Wed
13Thu9:058.89:259.52:511.43:071.55:247:56Waxing Gibbous13Thu
14Fri9:558.910:079.73:421.13:521.55:237:57Waxing Gibbous14Fri
15Sat10:388.910:469.94:260.84:331.55:227:58Waxing Gibbous15Sat
16Sun11:199.011:2310.05:070.65:121.45:217:59Full Moon16Sun
17Mon11:589.05:460.45:501.45:208:00Full Moon17Mon
18Tue12:0010.112:389.06:240.46:291.45:198:01Full Moon18Tue
19Wed12:3810.11:178.97:030.37:091.55:188:02Full Moon19Wed
20Thu1:1710.11:578.97:430.37:501.55:188:03Waning Gibbous20Thu
21Fri1:5710.12:378.88:240.48:321.55:178:04Waning Gibbous21Fri
22Sat2:3910.13:208.99:070.49:171.55:168:05Waning Gibbous22Sat
23Sun3:2410.04:059.09:520.410:071.55:158:06Waning Gibbous23Sun
24Mon4:139.94:559.210:410.511:011.45:148:07Third Quarter24Mon
25Tue5:079.85:469.511:320.511:591.15:148:08Third Quarter25Tue
26Wed6:049.76:409.912:260.55:138:08Third Quarter26Wed
27Thu7:039.77:3410.412:570.71:200.45:128:09Waning Crescent27Thu
28Fri8:049.88:3010.91:570.22:160.35:128:10Waning Crescent28Fri
29Sat9:059.99:2511.42:57-0.33:130.15:118:11Waning Crescent29Sat
30Sun10:0410.110:1911.73:55-0.84:080.05:108:12New Moon30Sun
31Mon11:0010.211:1311.94:50-1.25:01-0.15:108:13New Moon31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8443838)

Common Questions About Charlestown, Charles River, MA Tides

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

Slack tide in Charlestown, Charles River, MA is approximately 5:24 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 Charlestown, Charles River, MA?

Charlestown, Charles River, MA is currently in a transitional phase. Tonight's moon is 22% 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 Charlestown, Charles River, 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 Charlestown, Charles River, MA?

Tide predictions for Charlestown, Charles River, 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 Charlestown, Charles River, MA?

Tide data for Charlestown, Charles River, MA is sourced from NOAA Station #8443838. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8443838.

What is the moon phase in Charlestown, Charles River, MA tonight?

Tonight the moon over Charlestown, Charles River, MA is Waning Crescent (22% illuminated). This places Charlestown, Charles River, 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