Tides Today & Tomorrow in Castle Hill, RI

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in Castle Hill, RI.
Next low tide : 7:43 am (0.4 ft)
Next high tide : in 40m at 1:22 am (3.4 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:11 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8453201
Common Questions About Tides

Castle Hill, RI Tides - Aug 2030

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:393.69:513.73:250.03:290.15:408:02Waxing Crescent1Thu
2Fri10:213.710:353.63:560.04:100.15:418:01Waxing Crescent2Fri
3Sat11:073.711:223.54:28-0.14:520.25:428:00Waxing Crescent3Sat
4Sun11:563.85:040.05:380.35:437:59Waxing Crescent4Sun
5Mon12:153.312:493.85:460.16:330.55:447:58First Quarter5Mon
6Tue1:103.21:443.86:360.27:450.65:457:57First Quarter6Tue
7Wed2:083.22:433.87:380.39:250.75:467:55First Quarter7Wed
8Thu3:093.13:483.98:500.310:530.55:477:54Waxing Gibbous8Thu
9Fri4:173.24:564.010:070.311:520.45:487:53Waxing Gibbous9Fri
10Sat5:243.46:004.111:180.25:497:51Waxing Gibbous10Sat
11Sun6:253.76:564.312:410.212:180.05:507:50Waxing Gibbous11Sun
12Mon7:194.07:474.41:260.11:13-0.15:517:49Full Moon12Mon
13Tue8:094.28:344.42:080.02:06-0.15:527:47Full Moon13Tue
14Wed8:584.29:204.22:45-0.12:560.05:537:46Full Moon14Wed
15Thu9:444.210:054.03:19-0.13:410.15:547:45Waning Gibbous15Thu
16Fri10:314.110:503.73:520.04:220.25:557:43Waning Gibbous16Fri
17Sat11:173.811:363.44:250.15:020.45:567:42Waning Gibbous17Sat
18Sun12:043.65:010.25:430.75:577:40Waning Gibbous18Sun
19Mon12:233.112:523.35:390.46:320.95:587:39Third Quarter19Mon
20Tue1:112.91:403.16:240.67:381.05:597:37Third Quarter20Tue
21Wed1:592.72:283.07:170.89:121.16:007:36Third Quarter21Wed
22Thu2:492.63:212.98:220.810:241.06:017:34Third Quarter22Thu
23Fri3:452.64:212.99:320.811:140.96:027:33Waning Crescent23Fri
24Sat4:452.75:193.010:350.711:550.76:037:31Waning Crescent24Sat
25Sun5:402.86:053.211:290.56:047:30Waning Crescent25Sun
26Mon6:263.16:453.412:320.512:150.36:057:28Waning Crescent26Mon
27Tue7:083.47:243.61:060.312:590.16:067:26New Moon27Tue
28Wed7:483.68:033.81:400.11:430.06:077:25New Moon28Wed
29Thu8:283.88:443.82:13-0.12:26-0.16:087:23New Moon29Thu
30Fri9:104.09:273.82:47-0.23:10-0.16:097:22New Moon30Fri
31Sat9:554.110:133.73:22-0.23:53-0.16:107:20Waxing Crescent31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8453201)

Common Questions About Castle Hill, RI Tides

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What time does the tide turn (slack tide) in Castle Hill, RI today?

Slack tide in Castle Hill, RI is approximately 4:32 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Castle Hill, RI?

Castle Hill, 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 Castle Hill, 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 Castle Hill, RI?

Tide predictions for Castle Hill, 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 Castle Hill, RI?

Tide data for Castle Hill, RI is sourced from NOAA Station #8453201. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8453201.

What is the moon phase in Castle Hill, RI tonight?

Tonight the moon over Castle Hill, RI is First Quarter (48% illuminated). This places Castle Hill, 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