Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

74°
H 75°
L 62°
SSW
10mph
Low tide
5:33 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently falling in Portsmouth, Melville, RI.
Next low tide : in 2h 46m at 5:33 pm (0.9 ft)
Next high tide (tomorrow) : 12:43 am (3.2 ft)
Sunset today : 6:53 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8452555
Common Questions About Tides

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Portsmouth, Melville, RI Tides - Nov 1966

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:144.19:483.42:090.13:000.36:164:40Waning Gibbous1Tue
2Wed10:004.010:383.32:470.23:380.46:184:39Waning Gibbous2Wed
3Thu10:523.911:333.33:290.34:220.66:194:38Waning Gibbous3Thu
4Fri11:503.84:170.55:190.86:204:37Third Quarter4Fri
5Sat12:313.312:513.85:160.66:500.86:214:35Third Quarter5Sat
6Sun1:303.51:523.96:340.78:260.66:224:34Third Quarter6Sun
7Mon2:313.72:563.98:080.69:190.36:244:33Waning Crescent7Mon
8Tue3:344.14:004.19:280.310:000.16:254:32Waning Crescent8Tue
9Wed4:354.55:004.210:290.010:39-0.26:264:31Waning Crescent9Wed
10Thu5:314.95:544.311:21-0.211:18-0.46:274:30Waning Crescent10Thu
11Fri6:225.26:454.412:11-0.46:294:29New Moon11Fri
12Sat7:115.47:344.41:01-0.46:304:28New Moon12Sat
13Sun7:595.38:224.312:41-0.41:49-0.36:314:27New Moon13Sun
14Mon8:485.19:124.11:25-0.32:34-0.16:324:26Waxing Crescent14Mon
15Tue9:374.810:023.82:10-0.13:160.16:334:25Waxing Crescent15Tue
16Wed10:294.310:563.62:550.13:580.46:354:24Waxing Crescent16Wed
17Thu11:233.911:513.43:400.44:440.76:364:24Waxing Crescent17Thu
18Fri12:193.64:300.75:460.96:374:23First Quarter18Fri
19Sat12:473.21:133.45:311.07:161.06:384:22First Quarter19Sat
20Sun1:413.22:053.27:001.18:160.96:394:21First Quarter20Sun
21Mon2:363.22:583.18:341.08:560.86:414:21First Quarter21Mon
22Tue3:313.33:513.09:300.99:300.66:424:20Waxing Gibbous22Tue
23Wed4:233.44:393.110:130.610:040.46:434:19Waxing Gibbous23Wed
24Thu5:073.65:223.210:530.410:380.26:444:19Waxing Gibbous24Thu
25Fri5:443.86:013.311:320.211:130.06:454:18Waxing Gibbous25Fri
26Sat6:204.06:393.412:110.16:464:18Full Moon26Sat
27Sun6:554.27:183.512:510.06:474:17Full Moon27Sun
28Mon7:334.27:593.512:26-0.11:310.06:484:17Full Moon28Mon
29Tue8:134.38:433.51:06-0.22:100.06:504:16Full Moon29Tue
30Wed8:574.29:303.51:48-0.12:490.06:514:16Waning Gibbous30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8452555)

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Common Questions About Portsmouth, Melville, RI Tides

Collapse All
Is this week a spring tide or neap tide in Portsmouth, Melville, RI?

Portsmouth, Melville, RI is currently in a transitional phase. Tonight's moon is 30% 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 Portsmouth, Melville, RI 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 Portsmouth, Melville, RI?

Tide predictions for Portsmouth, Melville, RI 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 Portsmouth, Melville, RI?

Tide data for Portsmouth, Melville, RI is sourced from NOAA Station #8452555. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8452555.

What is the moon phase in Portsmouth, Melville, RI tonight?

Tonight the moon over Portsmouth, Melville, RI is Waxing Crescent (30% illuminated). This places Portsmouth, Melville, RI 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

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