Tides Today & Tomorrow in New Castle, DE

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in New Castle, DE.
Next low tide (tomorrow) : 3:02 am (0.9 ft)
Next high tide : in 13m at 8:07 pm (5.8 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8551201
Common Questions About Tides

New Castle, DE Tides - Jun 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:396.62:205.49:090.09:090.45:368:24Waning Gibbous1Sat
2Sun2:346.43:175.310:020.110:040.55:368:24Waning Gibbous2Sun
3Mon3:316.24:175.310:560.211:020.65:358:25Waning Gibbous3Mon
4Tue4:326.05:185.311:510.25:358:26Third Quarter4Tue
5Wed5:345.86:195.412:010.712:450.35:358:26Third Quarter5Wed
6Thu6:365.77:185.61:010.71:390.35:348:27Third Quarter6Thu
7Fri7:375.68:155.72:010.72:310.35:348:28Waning Crescent7Fri
8Sat8:345.59:085.92:590.63:220.25:348:28Waning Crescent8Sat
9Sun9:275.59:576.13:550.54:100.25:348:29Waning Crescent9Sun
10Mon10:175.510:436.24:480.44:570.35:348:29Waning Crescent10Mon
11Tue11:035.411:256.25:380.35:410.35:348:30New Moon11Tue
12Wed11:485.36:250.36:230.45:348:30New Moon12Wed
13Thu12:056.112:315.27:100.37:030.55:338:31New Moon13Thu
14Fri12:426.01:125.17:520.37:410.65:338:31New Moon14Fri
15Sat1:186.01:525.08:320.38:170.75:348:31New Moon15Sat
16Sun1:525.92:314.99:110.48:530.75:348:32Waxing Crescent16Sun
17Mon2:255.83:094.99:480.59:300.85:348:32Waxing Crescent17Mon
18Tue3:005.83:484.910:260.510:100.85:348:32Waxing Crescent18Tue
19Wed3:395.74:305.011:060.510:570.85:348:33Waxing Crescent19Wed
20Thu4:255.75:165.111:480.511:510.95:348:33First Quarter20Thu
21Fri5:175.66:075.312:340.55:348:33First Quarter21Fri
22Sat6:165.57:035.512:530.91:240.55:358:33First Quarter22Sat
23Sun7:205.48:005.81:590.82:190.45:358:33Waxing Gibbous23Sun
24Mon8:245.48:576.03:040.73:150.45:358:34Waxing Gibbous24Mon
25Tue9:255.49:526.34:090.64:130.45:368:34Waxing Gibbous25Tue
26Wed10:235.410:466.55:100.45:110.35:368:34Waxing Gibbous26Wed
27Thu11:195.411:396.66:090.26:080.35:368:34Full Moon27Thu
28Fri12:145.47:050.17:040.25:378:34Full Moon28Fri
29Sat12:326.61:095.57:590.07:590.35:378:34Full Moon29Sat
30Sun1:266.62:055.58:510.08:530.35:388:34Waning Gibbous30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8551201)

Common Questions About New Castle, DE Tides

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What time does the tide turn (slack tide) in New Castle, DE today?

Slack tide in New Castle, DE is approximately 11:34 pm — 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 New Castle, DE?

New Castle, DE is currently in a transitional phase. Tonight's moon is 71% 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 New Castle, DE 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 New Castle, DE?

Tide predictions for New Castle, DE 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 New Castle, DE?

Tide data for New Castle, DE is sourced from NOAA Station #8551201. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8551201.

What is the moon phase in New Castle, DE tonight?

Tonight the moon over New Castle, DE is Waxing Gibbous (71% illuminated). This places New Castle, DE 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