Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

66°
H -°
L 54°
NNE
6mph
High tide
2:24 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Friday, September 18, 2026
The tide is currently rising in Portsmouth, Melville, RI.
Next low tide (tomorrow) : 7:17 am (1.2 ft)
Next high tide (tomorrow) : in 4h 45m at 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

Featured Local Businesses

East Passage 24. Photo by Tyler Fields Photography

East Passage Boatwrights

Becket & Company Yacht Management Newport
Oldport Marine

Oldport Marine
Newport International Boat Show

Newport International Boat Show

Portsmouth, Melville, RI Tides - Jul 1964

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:433.71:173.66:030.46:230.75:148:23Third Quarter1Wed
2Thu1:343.62:073.86:520.47:310.85:158:23Third Quarter2Thu
3Fri2:263.63:004.07:480.38:500.75:158:22Third Quarter3Fri
4Sat3:243.63:584.38:470.210:070.55:168:22Waning Crescent4Sat
5Sun4:273.65:014.59:470.011:120.25:178:22Waning Crescent5Sun
6Mon5:323.86:044.810:44-0.15:178:22Waning Crescent6Mon
7Tue6:344.07:025.112:090.011:40 AM-0.35:188:21Waning Crescent7Tue
8Wed7:304.37:575.31:05-0.112:35-0.45:198:21New Moon8Wed
9Thu8:254.58:505.42:03-0.21:31-0.45:198:20New Moon9Thu
10Fri9:174.69:435.32:59-0.32:28-0.35:208:20New Moon10Fri
11Sat10:104.610:355.03:49-0.23:24-0.25:218:20Waxing Crescent11Sat
12Sun11:034.611:274.74:33-0.14:170.05:218:19Waxing Crescent12Sun
13Mon11:584.55:140.15:080.35:228:19Waxing Crescent13Mon
14Tue12:204.312:524.35:540.36:030.65:238:18First Quarter14Tue
15Wed1:124.01:464.26:370.57:140.95:248:17First Quarter15Wed
16Thu2:043.62:384.07:250.78:431.05:258:17First Quarter16Thu
17Fri2:543.43:313.98:160.89:501.05:258:16First Quarter17Fri
18Sat3:483.14:273.89:060.810:401.05:268:15Waxing Gibbous18Sat
19Sun4:463.05:243.89:560.811:210.95:278:15Waxing Gibbous19Sun
20Mon5:443.16:153.810:440.711:590.75:288:14Waxing Gibbous20Mon
21Tue6:343.26:593.911:290.65:298:13Waxing Gibbous21Tue
22Wed7:173.37:384.012:390.612:140.55:308:12Full Moon22Wed
23Thu7:563.48:154.11:200.412:580.45:318:11Full Moon23Thu
24Fri8:343.68:504.12:020.31:430.35:328:11Full Moon24Fri
25Sat9:123.79:274.22:420.22:260.35:338:10Full Moon25Sat
26Sun9:513.710:054.13:170.23:080.35:348:09Waning Gibbous26Sun
27Mon10:313.810:464.13:490.13:470.35:348:08Waning Gibbous27Mon
28Tue11:153.811:314.04:200.14:270.45:358:07Waning Gibbous28Tue
29Wed12:013.94:530.15:100.55:368:06Waning Gibbous29Wed
30Thu12:193.912:504.05:310.26:010.65:378:05Third Quarter30Thu
31Fri1:113.81:424.16:160.27:050.75:388:04Third 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 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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