Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

51°
H 69°
L 53°
N
5mph
High tide
11:35 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently rising in Portsmouth, Melville, RI.
Next low tide : 4:51 pm (0.6 ft)
Next high tide : in 5h 31m at 11:35 am (4.3 ft)
Sunset today : 6:54 pm
Sunrise tomorrow : 6:25 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8452555
Common Questions About Tides

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Portsmouth, Melville, RI Tides - Jan 2086

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:384.18:583.81:15-0.22:17-0.17:114:26Full Moon1Tue
2Wed9:183.99:403.61:59-0.22:47-0.17:114:26Waning Gibbous2Wed
3Thu9:563.610:223.52:41-0.13:180.07:114:27Waning Gibbous3Thu
4Fri10:353.411:043.33:220.13:510.17:114:28Waning Gibbous4Fri
5Sat11:133.111:463.24:040.24:260.27:114:29Waning Gibbous5Sat
6Sun11:532.94:500.45:050.37:114:30Third Quarter6Sun
7Mon12:283.112:352.75:430.65:510.47:114:31Third Quarter7Mon
8Tue1:103.11:212.66:490.76:460.47:114:32Third Quarter8Tue
9Wed1:573.12:122.68:060.77:470.47:104:33Third Quarter9Wed
10Thu2:513.23:132.69:160.58:480.27:104:34Waning Crescent10Thu
11Fri3:523.34:172.810:110.39:450.07:104:35Waning Crescent11Fri
12Sat4:523.65:163.110:580.010:37-0.37:104:37Waning Crescent12Sat
13Sun5:454.06:083.511:43-0.211:27-0.57:094:38Waning Crescent13Sun
14Mon6:344.36:583.912:28-0.57:094:39New Moon14Mon
15Tue7:224.67:474.212:17-0.71:13-0.77:084:40New Moon15Tue
16Wed8:104.78:364.41:08-0.91:56-0.87:084:41New Moon16Wed
17Thu8:594.79:264.52:00-0.92:38-0.97:074:42Waxing Crescent17Thu
18Fri9:504.610:184.52:51-0.83:19-0.87:074:43Waxing Crescent18Fri
19Sat10:424.311:134.43:41-0.64:00-0.77:064:45Waxing Crescent19Sat
20Sun11:374.04:34-0.24:45-0.47:064:46First Quarter20Sun
21Mon12:104.312:343.75:420.15:36-0.27:054:47First Quarter21Mon
22Tue1:084.11:323.47:440.46:390.17:044:48First Quarter22Tue
23Wed2:093.92:343.29:120.47:550.27:044:50First Quarter23Wed
24Thu3:153.83:403.210:150.39:130.37:034:51Waxing Gibbous24Thu
25Fri4:223.84:443.211:060.310:110.27:024:52Waxing Gibbous25Fri
26Sat5:223.85:403.411:500.210:560.17:014:53Waxing Gibbous26Sat
27Sun6:133.96:293.612:260.17:004:55Waxing Gibbous27Sun
28Mon6:574.07:133.712:550.06:594:56Full Moon28Mon
29Tue7:374.07:543.812:18-0.21:20-0.16:584:57Full Moon29Tue
30Wed8:153.98:333.81:00-0.21:47-0.26:574:58Full Moon30Wed
31Thu8:503.89:103.71:42-0.32:16-0.26:575:00Full Moon31Thu
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 21% 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 (21% 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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