Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

48°
H -°
L 38°
E
3mph
Low tide
8:23 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, Melville, RI

TIDE TIMES for Sunday, October 18, 2026
The tide is currently falling in Portsmouth, Melville, RI.
Next low tide : in 1h 22m at 8:23 pm (1.2 ft)
Next high tide (tomorrow) : 2:39 am (2.9 ft)
Sunset today : 5:59 pm
Sunrise tomorrow : 7:00 am
Moon phase : First Quarter (50% illuminated)
Tide Station Location : Station #8452555
Common Questions About Tides

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Portsmouth, Melville, RI Tides - Jan 1917

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:444.02:083.38:390.57:330.37:124:25First Quarter1Mon
2Tue2:443.93:083.19:450.58:390.37:124:26Waxing Gibbous2Tue
3Wed3:503.84:143.110:390.49:270.37:124:27Waxing Gibbous3Wed
4Thu4:503.85:083.111:210.410:150.37:124:28Waxing Gibbous4Thu
5Fri5:443.86:023.311:570.310:570.27:124:29Waxing Gibbous5Fri
6Sat6:323.96:443.412:330.27:124:30Full Moon6Sat
7Sun7:143.97:263.51:030.17:124:31Full Moon7Sun
8Mon7:503.98:083.512:21-0.11:330.07:114:32Full Moon8Mon
9Tue8:263.88:443.51:09-0.12:090.07:114:33Full Moon9Tue
10Wed9:023.79:203.41:51-0.22:39-0.17:114:34Waning Gibbous10Wed
11Thu9:323.510:023.32:33-0.13:09-0.17:114:35Waning Gibbous11Thu
12Fri10:083.310:383.23:090.03:390.07:104:36Waning Gibbous12Fri
13Sat10:443.111:203.23:510.14:090.07:104:37Waning Gibbous13Sat
14Sun11:262.94:270.34:390.17:104:38Third Quarter14Sun
15Mon12:023.212:142.85:150.55:210.27:094:39Third Quarter15Mon
16Tue12:443.21:022.76:150.66:150.27:094:40Third Quarter16Tue
17Wed1:383.31:562.77:270.67:150.27:084:41Third Quarter17Wed
18Thu2:323.43:022.88:510.48:270.07:084:43Waning Crescent18Thu
19Fri3:443.74:143.010:030.29:33-0.27:074:44Waning Crescent19Fri
20Sat4:504.05:143.410:57-0.110:33-0.57:074:45Waning Crescent20Sat
21Sun5:504.46:143.811:45-0.411:33-0.77:064:46Waning Crescent21Sun
22Mon6:384.77:024.212:39-0.67:054:47New Moon22Mon
23Tue7:324.97:564.512:27-0.91:27-0.87:054:49New Moon23Tue
24Wed8:204.98:444.61:21-1.02:09-0.97:044:50New Moon24Wed
25Thu9:144.89:384.72:21-0.92:51-0.97:034:51Waxing Crescent25Thu
26Fri10:024.510:324.63:09-0.73:27-0.87:024:52Waxing Crescent26Fri
27Sat10:564.111:264.44:03-0.44:09-0.57:024:54Waxing Crescent27Sat
28Sun11:503.84:570.04:51-0.27:014:55First Quarter28Sun
29Mon12:204.112:443.46:090.35:390.17:004:56First Quarter29Mon
30Tue1:203.81:383.18:030.56:390.36:594:57First Quarter30Tue
31Wed2:203.52:382.99:210.67:510.56:584:59First Quarter31Wed
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 50% 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 (50% 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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