Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

55°
H -°
L 49°
N
5mph
Low tide
4:06 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Portsmouth, Melville, RI.
Next low tide : in 1h 38m at 4:06 am (0.3 ft)
Next high tide : 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

Featured Local Businesses

East Passage 24. Photo by Tyler Fields Photography

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Becket & Company Yacht Management Newport
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Newport International Boat Show

Portsmouth, Melville, RI Tides - Oct 1969

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:163.412:413.84:550.65:571.16:426:27Third Quarter1Wed
2Thu1:083.21:343.55:410.97:071.36:436:25Third Quarter2Thu
3Fri2:013.02:283.36:381.19:091.36:446:24Third Quarter3Fri
4Sat2:553.03:263.27:541.210:091.26:456:22Third Quarter4Sat
5Sun3:533.04:273.29:211.110:501.06:466:20Waning Crescent5Sun
6Mon4:523.15:213.310:270.911:230.86:476:19Waning Crescent6Mon
7Tue5:443.46:043.511:170.711:530.56:486:17Waning Crescent7Tue
8Wed6:263.76:423.711:590.46:496:15Waning Crescent8Wed
9Thu7:044.07:183.912:220.312:400.26:506:14New Moon9Thu
10Fri7:414.37:564.012:520.11:200.16:516:12New Moon10Fri
11Sat8:194.68:364.01:23-0.12:000.06:526:11New Moon11Sat
12Sun8:584.79:194.01:56-0.12:42-0.16:536:09New Moon12Sun
13Mon9:414.710:043.92:33-0.23:230.06:556:07Waxing Crescent13Mon
14Tue10:274.710:553.83:13-0.14:050.16:566:06Waxing Crescent14Tue
15Wed11:194.511:503.63:550.04:510.36:576:04Waxing Crescent15Wed
16Thu12:174.34:410.25:440.66:586:03First Quarter16Thu
17Fri12:503.51:194.25:350.57:070.86:596:01First Quarter17Fri
18Sat1:523.52:234.16:450.79:160.87:006:00First Quarter18Sat
19Sun2:553.63:274.18:300.810:190.67:015:58First Quarter19Sun
20Mon4:003.84:334.110:180.611:040.47:025:56Waxing Gibbous20Mon
21Tue5:054.15:354.211:200.411:390.27:045:55Waxing Gibbous21Tue
22Wed6:034.56:294.312:090.27:055:54Waxing Gibbous22Wed
23Thu6:554.87:174.312:090.112:530.17:065:52Full Moon23Thu
24Fri7:415.08:034.312:380.01:340.07:075:51Full Moon24Fri
25Sat8:255.08:474.21:11-0.12:140.07:085:49Full Moon25Sat
26Sun8:084.98:304.01:46-0.11:520.16:094:48Full Moon26Sun
27Mon8:504.69:133.81:240.02:280.26:114:46Waning Gibbous27Mon
28Tue9:334.39:583.52:040.23:040.46:124:45Waning Gibbous28Tue
29Wed10:173.910:453.32:450.33:420.76:134:44Waning Gibbous29Wed
30Thu11:043.611:353.13:280.64:240.96:144:42Waning Gibbous30Thu
31Fri11:543.34:130.85:191.16:154:41Third Quarter31Fri
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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