Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

70°
H 79°
L 52°
W
3mph
High tide
2:02 pm
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 : 7:41 pm (1.3 ft)
Next high tide : in 7h 48m at 2:02 pm (3.4 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 - Jan 2090

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:084.28:263.712:42-0.11:38-0.17:114:26New Moon1Sun
2Mon8:474.09:063.61:25-0.22:13-0.17:114:27New Moon2Mon
3Tue9:253.89:463.42:07-0.12:48-0.17:114:27Waxing Crescent3Tue
4Wed10:023.610:263.32:490.03:220.07:114:28Waxing Crescent4Wed
5Thu10:403.311:063.13:290.13:570.17:114:29Waxing Crescent5Thu
6Fri11:203.111:483.04:100.34:350.27:114:30Waxing Crescent6Fri
7Sat12:022.94:550.55:160.27:114:31First Quarter7Sat
8Sun12:303.012:472.85:490.66:040.37:114:32First Quarter8Sun
9Mon1:153.01:352.86:580.77:010.37:104:33First Quarter9Mon
10Tue2:053.12:302.88:180.68:010.27:104:34First Quarter10Tue
11Wed3:023.33:322.99:260.49:010.07:104:35Waxing Gibbous11Wed
12Thu4:043.64:353.210:200.19:56-0.37:104:37Waxing Gibbous12Thu
13Fri5:043.95:333.511:09-0.210:48-0.67:094:38Waxing Gibbous13Fri
14Sat5:584.36:253.911:56-0.511:40-0.87:094:39Full Moon14Sat
15Sun6:504.77:164.212:44-0.77:084:40Full Moon15Sun
16Mon7:404.98:074.512:32-1.01:33-0.87:084:41Full Moon16Mon
17Tue8:304.98:584.61:25-1.02:19-0.97:074:42Full Moon17Tue
18Wed9:214.89:514.62:18-1.03:03-0.97:074:43Waning Gibbous18Wed
19Thu10:144.610:454.53:09-0.83:46-0.77:064:45Waning Gibbous19Thu
20Fri11:084.311:424.44:01-0.54:30-0.57:064:46Waning Gibbous20Fri
21Sat12:044.04:58-0.15:19-0.27:054:47Third Quarter21Sat
22Sun12:394.21:013.66:150.26:200.17:044:48Third Quarter22Sun
23Mon1:384.02:003.48:160.47:390.27:034:50Third Quarter23Mon
24Tue2:393.83:023.29:310.48:590.37:034:51Waning Crescent24Tue
25Wed3:433.84:073.210:270.49:520.37:024:52Waning Crescent25Wed
26Thu4:463.85:073.211:100.310:320.27:014:53Waning Crescent26Thu
27Fri5:403.85:583.411:450.211:090.17:004:55Waning Crescent27Fri
28Sat6:263.96:433.512:130.16:594:56New Moon28Sat
29Sun7:083.97:243.612:420.06:584:57New Moon29Sun
30Mon7:463.98:023.612:28-0.21:14-0.16:574:58New Moon30Mon
31Tue8:223.98:393.61:09-0.31:48-0.26:565:00New Moon31Tue
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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