Tides Today & Tomorrow in New Castle, DE

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in New Castle, DE.
Next low tide (tomorrow) : in 3h 45m at 1:30 am (1.1 ft)
Next high tide (tomorrow) : 6:59 am (4.9 ft)
Sunset today : 7:51 pm
Sunrise tomorrow : 6:19 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8551201
Common Questions About Tides

New Castle, DE Tides - May 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:345.310:035.63:520.74:190.46:027:55Waning Crescent1Sun
2Mon10:225.310:475.74:440.55:030.36:017:56Waning Crescent2Mon
3Tue11:065.311:285.85:330.45:440.46:007:57Waning Crescent3Tue
4Wed11:485.26:190.36:230.45:597:58New Moon4Wed
5Thu12:055.912:285.17:020.36:590.55:577:59New Moon5Thu
6Fri12:395.81:065.07:440.47:340.65:568:00New Moon6Fri
7Sat1:105.81:434.88:240.48:070.75:558:01New Moon7Sat
8Sun1:405.82:204.79:040.58:400.75:548:02Waxing Crescent8Sun
9Mon2:115.82:574.79:440.69:160.85:538:03Waxing Crescent9Mon
10Tue2:465.83:384.710:250.79:580.85:528:04Waxing Crescent10Tue
11Wed3:305.84:254.811:100.710:500.85:518:05Waxing Crescent11Wed
12Thu4:215.75:184.912:000.75:508:06First Quarter12Thu
13Fri5:215.66:175.112:530.75:498:07First Quarter13Fri
14Sat6:265.67:185.312:560.81:480.65:488:08First Quarter14Sat
15Sun7:345.68:175.62:040.72:430.55:478:09Waxing Gibbous15Sun
16Mon8:385.69:146.03:100.63:370.45:468:10Waxing Gibbous16Mon
17Tue9:375.610:076.34:140.44:310.35:458:11Waxing Gibbous17Tue
18Wed10:345.610:596.55:150.25:240.25:448:12Full Moon18Wed
19Thu11:285.511:496.66:130.16:160.25:448:13Full Moon19Thu
20Fri12:215.47:090.07:080.35:438:13Full Moon20Fri
21Sat12:396.61:145.38:030.17:590.45:428:14Full Moon21Sat
22Sun1:306.52:085.28:560.18:510.65:418:15Waning Gibbous22Sun
23Mon2:226.33:045.19:480.39:440.75:418:16Waning Gibbous23Mon
24Tue3:176.04:015.010:400.410:380.95:408:17Waning Gibbous24Tue
25Wed4:145.84:585.011:310.511:331.05:398:18Third Quarter25Wed
26Thu5:125.65:565.012:220.65:398:19Third Quarter26Thu
27Fri6:105.46:535.212:301.01:120.65:388:19Third Quarter27Fri
28Sat7:085.37:485.31:271.02:010.65:388:20Third Quarter28Sat
29Sun8:045.28:405.52:241.02:490.55:378:21Waning Crescent29Sun
30Mon8:575.29:285.73:190.93:350.55:378:22Waning Crescent30Mon
31Tue9:475.210:135.84:120.74:190.55:368:22Waning Crescent31Tue
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 4:14 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 New Castle, DE?

New Castle, DE is currently in a neap phase. Tonight's moon is 55% 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 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 First Quarter (55% illuminated). This places New Castle, DE 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