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 : in 1h 17m at 12:34 pm (0.8 ft)
Next high tide : 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 - Oct 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:285.79:506.13:590.44:130.45:585:45Waxing Gibbous1Sun
2Mon10:176.010:366.14:470.35:050.45:595:44Full Moon2Mon
3Tue11:026.111:206.05:320.25:540.36:005:42Full Moon3Tue
4Wed11:446.16:130.26:400.46:015:40Full Moon4Wed
5Thu12:025.812:246.16:520.37:240.56:025:39Waning Gibbous5Thu
6Fri12:445.61:036.07:290.58:080.76:035:37Waning Gibbous6Fri
7Sat1:265.41:425.98:050.68:510.86:045:36Waning Gibbous7Sat
8Sun2:105.22:225.88:400.89:351.06:055:34Waning Gibbous8Sun
9Mon2:575.03:055.69:180.910:221.06:065:33Third Quarter9Mon
10Tue3:474.83:545.510:021.011:121.16:075:31Third Quarter10Tue
11Wed4:414.74:495.510:541.06:085:30Third Quarter11Wed
12Thu5:374.75:485.412:051.111:52 AM1.06:095:28Third Quarter12Thu
13Fri6:334.86:475.512:581.012:510.96:105:27Third Quarter13Fri
14Sat7:275.07:425.61:500.91:490.86:115:25Waning Crescent14Sat
15Sun8:165.28:325.72:400.72:460.66:125:24Waning Crescent15Sun
16Mon9:025.59:185.73:270.53:410.56:135:22Waning Crescent16Mon
17Tue9:445.710:025.74:120.44:330.46:145:21New Moon17Tue
18Wed10:246.010:445.74:550.35:240.36:155:19New Moon18Wed
19Thu11:046.211:285.65:370.36:150.36:165:18New Moon19Thu
20Fri11:456.36:200.37:060.36:175:16New Moon20Fri
21Sat12:135.512:296.37:040.47:580.46:185:15Waxing Crescent21Sat
22Sun1:015.31:186.27:520.58:520.66:195:14Waxing Crescent22Sun
23Mon1:555.12:136.18:450.69:500.76:205:12Waxing Crescent23Mon
24Tue2:554.93:155.99:440.710:500.86:215:11First Quarter24Tue
25Wed4:004.84:245.710:480.811:500.86:225:09First Quarter25Wed
26Thu5:094.95:365.611:540.86:235:08First Quarter26Thu
27Fri6:175.06:435.612:500.712:590.76:255:07Waxing Gibbous27Fri
28Sat7:205.27:445.71:470.52:010.66:265:06Waxing Gibbous28Sat
29Sun8:175.58:395.72:400.32:590.46:275:04Waxing Gibbous29Sun
30Mon9:085.89:285.73:300.23:540.36:285:03Waxing Gibbous30Mon
31Tue9:545.910:135.64:160.14:450.26:295:02Full Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8551201)

Common Questions About New Castle, DE Tides

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

Slack tide in New Castle, DE is approximately 3:32 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