Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

73°
H -°
L 53°
NNW
5mph
Low tide
7:41 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Friday, September 18, 2026
The tide is currently falling in Portsmouth, Melville, RI.
Next low tide : in 33m at 7:41 pm (1.3 ft)
Next high tide (tomorrow) : 2:24 am (2.9 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:28 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8452555
Common Questions About Tides

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Portsmouth, Melville, RI Tides - Oct 2090

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:473.73:203.98:161.110:120.96:426:26First Quarter1Sun
2Mon3:473.64:223.710:051.010:560.96:436:24Waxing Gibbous2Mon
3Tue4:493.65:223.710:530.911:260.86:446:23Waxing Gibbous3Tue
4Wed5:463.76:123.811:270.811:490.66:456:21Waxing Gibbous4Wed
5Thu6:333.96:553.912:010.66:476:19Waxing Gibbous5Thu
6Fri7:144.07:333.912:150.512:360.46:486:18Full Moon6Fri
7Sat7:514.28:074.012:450.31:140.36:496:16Full Moon7Sat
8Sun8:254.28:413.91:190.21:530.26:506:14Full Moon8Sun
9Mon8:574.29:163.91:540.12:320.16:516:13Full Moon9Mon
10Tue9:304.29:523.82:290.13:100.26:526:11Full Moon10Tue
11Wed10:054.110:313.63:040.13:450.36:536:09Waning Gibbous11Wed
12Thu10:444.011:143.53:390.24:190.46:546:08Waning Gibbous12Thu
13Fri11:283.94:160.34:560.56:556:06Waning Gibbous13Fri
14Sat12:033.412:183.84:560.45:400.76:566:05Third Quarter14Sat
15Sun12:563.41:133.85:440.56:370.86:586:03Third Quarter15Sun
16Mon1:523.52:113.86:440.67:560.86:596:01Third Quarter16Mon
17Tue2:503.63:123.98:000.69:230.67:006:00Third Quarter17Tue
18Wed3:513.94:164.19:220.410:240.37:015:58Waning Crescent18Wed
19Thu4:544.25:214.310:350.211:120.07:025:57Waning Crescent19Thu
20Fri5:544.76:204.611:35-0.111:56-0.37:035:55Waning Crescent20Fri
21Sat6:505.17:144.812:28-0.47:045:54New Moon21Sat
22Sun7:425.48:054.912:40-0.51:21-0.57:065:53New Moon22Sun
23Mon8:325.68:564.91:24-0.62:13-0.57:075:51New Moon23Mon
24Tue9:225.69:464.72:10-0.53:04-0.47:085:50New Moon24Tue
25Wed10:125.310:374.52:56-0.43:52-0.27:095:48Waxing Crescent25Wed
26Thu11:045.011:314.23:41-0.24:370.17:105:47Waxing Crescent26Thu
27Fri11:594.64:260.25:240.47:115:46Waxing Crescent27Fri
28Sat12:263.912:554.25:130.56:200.77:135:44First Quarter28Sat
29Sun1:233.71:523.96:070.88:010.97:145:43First Quarter29Sun
30Mon2:203.62:473.67:211.19:170.97:155:42First Quarter30Mon
31Tue3:163.53:443.49:181.110:020.97:165:40First Quarter31Tue
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 neap phase. Tonight's moon is 48% 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 minimum.

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 First Quarter (48% illuminated). This places Portsmouth, Melville, RI in a neap tide cycle, so tidal ranges are near their weekly minimum 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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