Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

50°
H -°
L 49°
NNE
11mph
High tide
4:28 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Wednesday, October 21, 2026
The tide is currently rising in Portsmouth, Melville, RI.
Next low tide : 10:28 am (0.8 ft)
Next high tide : in 4h 21m at 4:28 am (3.2 ft)
Sunset today : 5:55 pm
Sunrise tomorrow : 7:04 am
Moon phase : Waxing Gibbous (78% 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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Oldport Marine

Oldport Marine
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Portsmouth, Melville, RI Tides - Mar 1914

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:273.010:413.33:370.03:34-0.16:205:34Waxing Crescent1Sun
2Mon11:062.811:193.24:120.24:070.16:195:35Waxing Crescent2Mon
3Tue11:502.64:510.54:460.36:175:37First Quarter3Tue
4Wed12:033.012:392.55:390.75:340.46:165:38First Quarter4Wed
5Thu12:543.01:322.56:540.86:380.56:145:39First Quarter5Thu
6Fri1:533.02:342.68:460.87:560.46:125:40First Quarter6Fri
7Sat3:023.13:422.89:530.59:120.26:115:41Waxing Gibbous7Sat
8Sun4:143.44:463.210:390.210:16-0.16:095:42Waxing Gibbous8Sun
9Mon5:143.85:423.711:19-0.111:11-0.56:075:44Waxing Gibbous9Mon
10Tue6:064.26:324.211:58-0.56:065:45Full Moon10Tue
11Wed6:554.47:204.712:03-0.812:37-0.76:045:46Full Moon11Wed
12Thu7:424.68:085.012:56-0.91:17-0.96:025:47Full Moon12Thu
13Fri8:304.58:565.11:48-1.01:58-0.96:015:48Full Moon13Fri
14Sat9:194.49:465.02:37-0.92:38-0.95:595:49Waning Gibbous14Sat
15Sun10:114.110:394.73:25-0.63:19-0.65:575:50Waning Gibbous15Sun
16Mon11:053.711:364.44:14-0.34:03-0.35:565:51Waning Gibbous16Mon
17Tue12:033.55:110.24:520.15:545:53Third Quarter17Tue
18Wed12:364.01:033.27:000.55:540.55:525:54Third Quarter18Wed
19Thu1:393.72:063.18:460.67:520.75:515:55Third Quarter19Thu
20Fri2:473.53:143.19:510.69:470.65:495:56Waning Crescent20Fri
21Sat3:573.44:213.210:390.510:380.55:475:57Waning Crescent21Sat
22Sun4:593.55:183.411:150.411:140.35:465:58Waning Crescent22Sun
23Mon5:483.66:043.711:390.311:450.25:445:59Waning Crescent23Mon
24Tue6:293.76:453.811:590.25:426:00New Moon24Tue
25Wed7:063.77:214.012:170.012:230.05:406:01New Moon25Wed
26Thu7:403.77:554.012:52-0.112:51-0.15:396:02New Moon26Thu
27Fri8:143.68:274.01:28-0.21:23-0.25:376:04New Moon27Fri
28Sat8:473.58:583.82:05-0.21:56-0.15:356:05New Moon28Sat
29Sun9:213.39:293.72:39-0.12:29-0.15:346:06Waxing Crescent29Sun
30Mon9:573.110:043.53:120.13:020.15:326:07Waxing Crescent30Mon
31Tue10:382.910:443.43:450.33:360.25:306:08Waxing Crescent31Tue
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 78% 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 Gibbous (78% 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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