Tides Today & Tomorrow in New Castle, DE

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in New Castle, DE.
Next low tide : in 5h 02m at 11:48 am (0.7 ft)
Next high tide : 5:37 pm (5.7 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 6:18 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8551201
Common Questions About Tides

New Castle, DE Tides - Dec 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:535.01:115.97:40-0.28:34-0.27:044:38Waning Gibbous1Tue
2Wed1:474.92:055.68:340.09:22-0.17:054:38Waning Gibbous2Wed
3Thu2:414.82:595.49:280.110:160.07:064:38Waning Gibbous3Thu
4Fri3:414.83:595.210:220.311:040.17:074:38Third Quarter4Fri
5Sat4:354.84:535.011:160.411:520.17:074:38Third Quarter5Sat
6Sun5:294.85:474.912:100.47:084:38Third Quarter6Sun
7Mon6:294.96:474.812:400.11:040.47:094:38Third Quarter7Mon
8Tue7:175.07:414.71:280.01:580.37:104:38Waning Crescent8Tue
9Wed8:115.28:294.72:160.02:520.27:114:38Waning Crescent9Wed
10Thu8:595.39:174.73:040.03:460.07:124:38Waning Crescent10Thu
11Fri9:415.310:054.63:52-0.14:34-0.17:134:38Waning Crescent11Fri
12Sat10:235.310:474.54:34-0.15:22-0.17:134:38New Moon12Sat
13Sun10:595.311:294.45:16-0.16:04-0.17:144:38New Moon13Sun
14Mon11:355.35:58-0.16:46-0.17:154:38New Moon14Mon
15Tue12:054.412:115.36:40-0.17:28-0.17:164:39New Moon15Tue
16Wed12:414.412:475.37:16-0.18:100.07:164:39Waxing Crescent16Wed
17Thu1:174.41:235.37:58-0.18:520.07:174:39Waxing Crescent17Thu
18Fri1:594.52:055.38:40-0.19:340.07:184:40Waxing Crescent18Fri
19Sat2:414.72:535.29:340.010:16-0.17:184:40First Quarter19Sat
20Sun3:294.83:535.110:280.011:04-0.17:194:40First Quarter20Sun
21Mon4:294.94:535.011:340.111:58-0.27:194:41First Quarter21Mon
22Tue5:295.15:594.912:340.17:204:41First Quarter22Tue
23Wed6:295.26:594.812:58-0.21:400.07:204:42Waxing Gibbous23Wed
24Thu7:355.48:054.81:52-0.32:46-0.17:214:43Waxing Gibbous24Thu
25Fri8:355.69:054.82:52-0.33:46-0.27:214:43Waxing Gibbous25Fri
26Sat9:295.79:594.83:52-0.44:46-0.47:214:44Full Moon26Sat
27Sun10:235.810:534.84:46-0.55:40-0.57:224:44Full Moon27Sun
28Mon11:175.711:474.85:40-0.56:34-0.57:224:45Full Moon28Mon
29Tue12:055.66:34-0.57:22-0.57:224:46Full Moon29Tue
30Wed12:354.812:535.57:22-0.48:10-0.57:224:47Waning Gibbous30Wed
31Thu1:294.81:415.38:10-0.38:58-0.57:234:47Waning Gibbous31Thu
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 2:42 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 neap phase. Tonight's moon is 46% 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 (46% 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