Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

70°
H -°
L 64°
SSW
5mph
High tide
5:59 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Monday, August 24, 2026
The tide is currently rising in Portsmouth, Melville, RI.
Next low tide : 11:15 am (0.8 ft)
Next high tide : in 5h 34m at 5:59 am (3.1 ft)
Sunset today : 7:31 pm
Sunrise tomorrow : 6:03 am
Moon phase : Waxing Gibbous (88% illuminated)
Tide Station Location : Station #8452555
Common Questions About Tides

Featured Local Businesses

East Passage 24. Photo by Tyler Fields Photography

East Passage Boatwrights

Becket & Company Yacht Management Newport
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Oldport Marine
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Newport International Boat Show

Portsmouth, Melville, RI Tides - Oct 2017

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:593.35:253.510:430.711:240.56:426:26Waxing Gibbous1Sun
2Mon5:513.66:143.811:310.411:590.36:436:25Waxing Gibbous2Mon
3Tue6:373.96:584.112:140.26:446:23Waxing Gibbous3Tue
4Wed7:204.37:414.412:340.012:560.06:456:21Full Moon4Wed
5Thu8:034.68:244.51:10-0.21:40-0.26:466:20Full Moon5Thu
6Fri8:474.99:104.61:48-0.42:25-0.36:476:18Full Moon6Fri
7Sat9:325.09:584.52:29-0.43:11-0.36:486:16Waning Gibbous7Sat
8Sun10:215.010:494.43:11-0.43:57-0.26:496:15Waning Gibbous8Sun
9Mon11:134.911:444.23:55-0.34:440.06:516:13Waning Gibbous9Mon
10Tue12:094.74:41-0.15:380.36:526:12Waning Gibbous10Tue
11Wed12:424.11:094.55:320.26:570.66:536:10Third Quarter11Wed
12Thu1:434.02:114.46:350.59:090.76:546:08Third Quarter12Thu
13Fri2:444.03:144.28:000.710:170.66:556:07Third Quarter13Fri
14Sat3:474.04:204.29:540.711:090.46:566:05Waning Crescent14Sat
15Sun4:524.25:244.211:030.511:500.36:576:04Waning Crescent15Sun
16Mon5:524.46:204.311:510.46:586:02Waning Crescent16Mon
17Tue6:454.67:094.412:220.212:310.26:596:00Waning Crescent17Tue
18Wed7:324.87:544.412:470.21:070.27:015:59New Moon18Wed
19Thu8:164.88:364.31:120.11:440.17:025:57New Moon19Thu
20Fri8:584.89:174.21:430.12:210.17:035:56New Moon20Fri
21Sat9:384.69:574.02:170.12:590.17:045:54New Moon21Sat
22Sun10:184.410:383.72:550.23:380.27:055:53Waxing Crescent22Sun
23Mon10:574.111:203.53:330.34:160.47:065:52Waxing Crescent23Mon
24Tue11:393.84:120.44:560.67:085:50Waxing Crescent24Tue
25Wed12:043.212:223.54:530.65:400.87:095:49Waxing Crescent25Wed
26Thu12:503.11:083.35:380.86:330.97:105:47First Quarter26Thu
27Fri1:383.01:553.26:331.07:441.07:115:46First Quarter27Fri
28Sat2:263.02:453.27:441.19:000.97:125:45First Quarter28Sat
29Sun3:173.13:383.39:041.09:550.77:135:43First Quarter29Sun
30Mon4:133.34:363.410:110.710:380.47:155:42Waxing Gibbous30Mon
31Tue5:093.65:323.711:030.411:160.17:165:41Waxing Gibbous31Tue
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 spring phase. Tonight's moon is 88% 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 near their weekly maximum.

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 Gibbous (88% illuminated). This places Portsmouth, Melville, RI in a spring tide cycle, so tidal ranges are near their weekly maximum 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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