Tides Today & Tomorrow in New Castle, DE

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in New Castle, DE.
Next low tide (tomorrow) : 1:30 am (1.1 ft)
Next high tide : in 2h 06m at 6:30 pm (5.7 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 - Dec 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:324.81:525.78:180.09:150.07:044:38Waxing Crescent1Thu
2Fri2:304.72:505.59:130.210:080.17:054:38Waxing Crescent2Fri
3Sat3:284.63:495.310:090.311:000.27:064:38First Quarter3Sat
4Sun4:274.64:485.111:070.411:520.27:064:38First Quarter4Sun
5Mon5:264.75:465.012:050.47:074:38First Quarter5Mon
6Tue6:234.86:434.912:420.11:020.47:084:38First Quarter6Tue
7Wed7:184.97:374.81:310.11:580.37:094:38Waxing Gibbous7Wed
8Thu8:085.18:284.82:180.02:520.27:104:38Waxing Gibbous8Thu
9Fri8:565.29:164.73:040.03:440.17:114:38Waxing Gibbous9Fri
10Sat9:405.310:014.63:480.04:340.07:124:38Waxing Gibbous10Sat
11Sun10:215.310:454.54:310.05:210.07:134:38Full Moon11Sun
12Mon10:595.311:264.45:130.06:050.07:134:38Full Moon12Mon
13Tue11:355.35:530.06:470.07:144:38Full Moon13Tue
14Wed12:054.312:105.26:310.17:280.17:154:38Full Moon14Wed
15Thu12:434.212:435.27:090.18:080.17:164:39Waning Gibbous15Thu
16Fri1:194.21:195.27:480.18:470.17:164:39Waning Gibbous16Fri
17Sat1:564.31:595.28:280.19:270.17:174:39Waning Gibbous17Sat
18Sun2:374.42:445.29:140.110:090.17:184:40Waning Gibbous18Sun
19Mon3:234.53:355.110:060.110:540.07:184:40Third Quarter19Mon
20Tue4:154.74:325.011:050.111:440.07:194:40Third Quarter20Tue
21Wed5:124.95:344.912:100.17:194:41Third Quarter21Wed
22Thu6:125.16:394.812:37-0.11:160.17:204:41Waning Crescent22Thu
23Fri7:135.37:424.71:33-0.22:220.07:204:42Waning Crescent23Fri
24Sat8:125.58:434.72:30-0.23:26-0.17:214:43Waning Crescent24Sat
25Sun9:095.79:404.73:29-0.34:27-0.37:214:43Waning Crescent25Sun
26Mon10:045.810:364.74:26-0.35:25-0.47:214:44New Moon26Mon
27Tue10:585.811:304.75:23-0.46:20-0.47:224:44New Moon27Tue
28Wed11:515.76:17-0.47:12-0.47:224:45New Moon28Wed
29Thu12:234.612:435.67:10-0.48:02-0.47:224:46Waxing Crescent29Thu
30Fri1:154.61:355.48:01-0.38:50-0.37:224:47Waxing Crescent30Fri
31Sat2:084.52:275.28:52-0.29:38-0.47:234:47Waxing Crescent31Sat
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 10:00 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 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