Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

53°
H 74°
L 63°
WSW
1mph
High tide
12:22 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Portsmouth, Melville, RI.
Next low tide : 5:33 pm (0.9 ft)
Next high tide : in 6h 40m at 12:22 pm (3.9 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 - Dec 2087

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:363.44:190.54:550.46:524:15First Quarter1Mon
2Tue12:103.312:283.45:110.65:460.36:534:15First Quarter2Tue
3Wed1:013.41:213.46:170.66:460.36:544:15First Quarter3Wed
4Thu1:553.72:193.47:390.67:490.16:554:15First Quarter4Thu
5Fri2:543.93:213.58:590.38:49-0.16:564:15Waxing Gibbous5Fri
6Sat3:564.34:253.710:030.09:46-0.46:574:15Waxing Gibbous6Sat
7Sun4:574.65:254.010:58-0.210:39-0.66:584:14Waxing Gibbous7Sun
8Mon5:545.06:214.211:51-0.411:31-0.86:594:14Full Moon8Mon
9Tue6:485.27:144.512:45-0.67:004:14Full Moon9Tue
10Wed7:405.38:074.612:23-0.81:40-0.67:014:15Full Moon10Wed
11Thu8:325.28:594.61:17-0.82:31-0.57:014:15Waning Gibbous11Thu
12Fri9:255.09:534.42:11-0.63:18-0.47:024:15Waning Gibbous12Fri
13Sat10:184.610:484.33:03-0.44:02-0.27:034:15Waning Gibbous13Sat
14Sun11:124.211:444.13:53-0.14:470.17:044:15Waning Gibbous14Sun
15Mon12:073.94:470.35:380.37:044:15Third Quarter15Mon
16Tue12:403.91:013.55:560.66:400.57:054:16Third Quarter16Tue
17Wed1:353.81:553.27:470.87:430.57:064:16Third Quarter17Wed
18Thu2:313.62:513.09:000.88:310.67:064:16Third Quarter18Thu
19Fri3:293.63:502.99:480.79:140.57:074:17Waning Crescent19Fri
20Sat4:263.64:462.910:250.69:550.47:074:17Waning Crescent20Sat
21Sun5:173.65:343.011:000.410:350.27:084:18Waning Crescent21Sun
22Mon6:003.76:163.211:370.211:160.17:084:18Waning Crescent22Mon
23Tue6:393.86:553.312:160.17:094:19New Moon23Tue
24Wed7:153.97:323.412:560.07:094:19New Moon24Wed
25Thu7:493.98:083.412:40-0.11:35-0.17:104:20New Moon25Thu
26Fri8:243.98:463.41:21-0.12:11-0.27:104:21New Moon26Fri
27Sat9:013.89:253.42:01-0.12:43-0.27:104:21Waxing Crescent27Sat
28Sun9:403.710:073.42:39-0.13:14-0.27:104:22Waxing Crescent28Sun
29Mon10:233.610:533.43:170.03:47-0.17:114:23Waxing Crescent29Mon
30Tue11:113.511:423.53:590.14:24-0.17:114:24Waxing Crescent30Tue
31Wed12:023.44:460.25:09-0.17:114:24First Quarter31Wed
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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