Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

65°
H -°
L 61°
SW
4mph
High tide
12:43 am
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 (tomorrow) : 5:24 am (0.8 ft)
Next high tide (tomorrow) : in 1h 56m at 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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East Passage 24. Photo by Tyler Fields Photography

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Newport International Boat Show

Portsmouth, Melville, RI Tides - Jan 1966

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:083.12:292.78:270.78:050.37:114:25First Quarter1Sat
2Sun3:023.33:302.89:310.58:590.17:124:26Waxing Gibbous2Sun
3Mon4:023.64:333.010:230.29:51-0.27:124:27Waxing Gibbous3Mon
4Tue5:003.95:303.311:11-0.110:41-0.47:124:28Waxing Gibbous4Tue
5Wed5:554.36:233.611:59-0.311:32-0.67:124:29Full Moon5Wed
6Thu6:464.67:143.912:49-0.57:124:30Full Moon6Thu
7Fri7:374.88:054.112:24-0.81:41-0.67:114:31Full Moon7Fri
8Sat8:284.98:564.21:18-0.92:29-0.67:114:32Full Moon8Sat
9Sun9:204.89:494.22:12-0.83:15-0.67:114:33Waning Gibbous9Sun
10Mon10:134.610:444.23:05-0.73:58-0.57:114:34Waning Gibbous10Mon
11Tue11:074.311:414.23:58-0.44:43-0.37:114:35Waning Gibbous11Tue
12Wed12:033.94:57-0.15:33-0.17:104:36Third Quarter12Wed
13Thu12:384.112:593.66:170.36:320.17:104:37Third Quarter13Thu
14Fri1:364.01:563.38:070.47:380.27:104:38Third Quarter14Fri
15Sat2:353.92:573.19:250.48:390.37:094:39Waning Crescent15Sat
16Sun3:383.84:023.010:230.49:310.37:094:40Waning Crescent16Sun
17Mon4:413.85:033.011:090.310:150.37:084:41Waning Crescent17Mon
18Tue5:363.85:553.111:470.310:560.27:084:43Waning Crescent18Tue
19Wed6:243.96:413.212:200.27:074:44New Moon19Wed
20Thu7:073.97:233.312:520.17:064:45New Moon20Thu
21Fri7:473.98:023.412:210.01:260.07:064:46New Moon21Fri
22Sat8:243.88:403.41:05-0.12:000.07:054:47New Moon22Sat
23Sun8:593.79:173.31:48-0.12:33-0.17:044:49New Moon23Sun
24Mon9:343.59:543.22:29-0.13:04-0.17:044:50Waxing Crescent24Mon
25Tue10:083.310:313.13:080.03:350.07:034:51Waxing Crescent25Tue
26Wed10:453.111:103.13:460.14:050.07:024:52Waxing Crescent26Wed
27Thu11:253.011:513.14:250.34:390.17:014:54Waxing Crescent27Thu
28Fri12:102.85:090.55:180.17:004:55First Quarter28Fri
29Sat12:353.112:582.76:060.66:070.27:004:56First Quarter29Sat
30Sun1:243.21:522.77:210.67:070.26:594:57First Quarter30Sun
31Mon2:203.32:552.78:480.58:140.16:584:59Waxing Gibbous31Mon
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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