Tides Today & Tomorrow in New Castle, DE

TIDE TIMES for Saturday, August 22, 2026
The tide is currently rising in New Castle, DE.
Next low tide (tomorrow) : 3:20 am (1.0 ft)
Next high tide : in 2h 21m at 8:21 pm (5.7 ft)
Sunset today : 7:48 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Gibbous (73% illuminated)
Tide Station Location : Station #8551201
Common Questions About Tides

New Castle, DE Tides - Sep 1927

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:215.53:475.510:100.710:381.16:297:35Waxing Crescent1Thu
2Fri4:025.34:255.510:430.811:251.16:307:33First Quarter2Fri
3Sat4:485.15:095.511:220.86:317:32First Quarter3Sat
4Sun5:404.96:005.612:191.212:090.96:327:30First Quarter4Sun
5Mon6:404.86:595.61:191.21:060.96:337:28First Quarter5Mon
6Tue7:434.88:015.72:201.22:080.96:347:27Waxing Gibbous6Tue
7Wed8:434.99:015.93:201.03:120.86:357:25Waxing Gibbous7Wed
8Thu9:395.19:576.14:170.84:140.76:367:24Waxing Gibbous8Thu
9Fri10:315.410:496.35:110.65:120.56:367:22Waxing Gibbous9Fri
10Sat11:205.711:396.56:020.46:080.36:377:20Full Moon10Sat
11Sun12:075.96:510.27:010.16:387:19Full Moon11Sun
12Mon12:276.512:546.17:380.17:540.16:397:17Full Moon12Mon
13Tue1:166.51:426.38:240.18:460.16:407:16Waning Gibbous13Tue
14Wed2:066.42:326.49:100.19:400.26:417:14Waning Gibbous14Wed
15Thu2:586.13:246.39:580.210:360.46:427:12Waning Gibbous15Thu
16Fri3:525.94:196.310:480.411:340.66:437:11Third Quarter16Fri
17Sat4:515.65:186.211:410.66:447:09Third Quarter17Sat
18Sun5:535.46:206.012:340.712:380.76:457:07Third Quarter18Sun
19Mon6:575.27:246.01:340.81:360.86:467:06Third Quarter19Mon
20Tue8:005.28:266.02:340.82:350.86:477:04Waning Crescent20Tue
21Wed8:595.39:236.03:310.73:330.86:487:02Waning Crescent21Wed
22Thu9:535.510:156.14:250.64:270.76:497:01Waning Crescent22Thu
23Fri10:425.611:016.15:140.55:180.66:506:59Waning Crescent23Fri
24Sat11:285.711:436.06:000.46:060.66:506:58New Moon24Sat
25Sun11:095.711:235.95:410.45:500.65:515:56New Moon25Sun
26Mon11:485.76:200.46:320.65:525:54New Moon26Mon
27Tue12:015.812:255.76:550.57:120.75:535:53New Moon27Tue
28Wed12:385.612:595.77:280.67:510.85:545:51Waxing Crescent28Wed
29Thu1:135.51:305.67:590.78:300.95:555:49Waxing Crescent29Thu
30Fri1:495.32:015.68:280.89:111.05:565:48Waxing Crescent30Fri
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 11:50 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 73% 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 (73% 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