Nearby Harbors
41.5865’ N, 71.2919’ W

Portsmouth, Melville, RI

69°
H 79°
L 52°
NW
4mph
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 6h 58m 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

Featured Local Businesses

East Passage 24. Photo by Tyler Fields Photography

East Passage Boatwrights

Becket & Company Yacht Management Newport
Newport International Boat Show

Newport International Boat Show
Oldport Marine

Oldport Marine

Portsmouth, Melville, RI Tides - May 1965

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:314.08:494.71:56-0.31:44-0.45:417:42New Moon1Sat
2Sun9:174.19:344.82:41-0.42:26-0.55:407:43New Moon2Sun
3Mon10:054.010:234.83:25-0.43:10-0.45:397:44Waxing Crescent3Mon
4Tue10:573.911:164.64:10-0.33:56-0.35:377:45Waxing Crescent4Tue
5Wed11:533.84:58-0.14:45-0.15:367:47Waxing Crescent5Wed
6Thu12:144.412:513.85:540.25:400.25:357:48First Quarter6Thu
7Fri1:154.21:523.87:250.46:490.55:347:49First Quarter7Fri
8Sat2:174.12:523.89:090.58:320.65:337:50First Quarter8Sat
9Sun3:193.93:554.010:110.410:160.55:317:51First Quarter9Sun
10Mon4:243.94:594.210:570.311:170.35:307:52Waxing Gibbous10Mon
11Tue5:273.95:574.411:340.25:297:53Waxing Gibbous11Tue
12Wed6:233.96:494.612:050.212:020.15:287:54Waxing Gibbous12Wed
13Thu7:124.07:364.812:470.112:290.15:277:55Full Moon13Thu
14Fri7:583.98:194.81:250.11:010.15:267:56Full Moon14Fri
15Sat8:413.99:014.72:020.01:360.15:257:57Full Moon15Sat
16Sun9:243.89:424.52:390.02:150.15:247:58Full Moon16Sun
17Mon10:053.610:224.23:160.12:560.25:237:59Waning Gibbous17Mon
18Tue10:483.411:043.93:530.23:380.35:228:00Waning Gibbous18Tue
19Wed11:323.311:463.64:300.44:200.55:218:01Waning Gibbous19Wed
20Thu12:173.15:100.65:030.75:208:02Waning Gibbous20Thu
21Fri12:313.41:043.05:540.75:520.95:208:03Third Quarter21Fri
22Sat1:173.21:503.06:480.86:521.05:198:04Third Quarter22Sat
23Sun2:023.12:363.17:520.98:091.05:188:05Third Quarter23Sun
24Mon2:493.13:243.28:510.89:250.95:178:05Third Quarter24Mon
25Tue3:403.14:173.49:400.610:260.75:178:06Waning Crescent25Tue
26Wed4:373.25:113.710:230.411:160.45:168:07Waning Crescent26Wed
27Thu5:343.46:034.111:040.15:158:08Waning Crescent27Thu
28Fri6:283.66:514.512:020.211:46 AM-0.15:158:09Waning Crescent28Fri
29Sat7:183.87:394.812:47-0.112:28-0.35:148:10New Moon29Sat
30Sun8:074.08:275.01:35-0.31:14-0.45:148:11New Moon30Sun
31Mon8:574.29:175.12:25-0.32:03-0.45:138:11New Moon31Mon
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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