Tides Today & Tomorrow in New Castle, DE

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently falling in New Castle, DE.
Next low tide (tomorrow) : in 7h 16m at 6:42 am (0.3 ft)
Next high tide (tomorrow) : 11:57 am (5.5 ft)
Sunset today : 8:03 pm
Sunrise tomorrow : 6:11 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8551201
Common Questions About Tides

New Castle, DE Tides - Jan 1950

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:235.19:504.33:27-0.14:23-0.17:234:48Waxing Gibbous1Sun
2Mon10:055.110:344.24:14-0.25:12-0.27:234:49Full Moon2Mon
3Tue10:445.211:154.25:00-0.25:58-0.27:234:50Full Moon3Tue
4Wed11:235.211:544.35:45-0.36:42-0.27:234:51Full Moon4Wed
5Thu12:015.36:28-0.37:24-0.27:234:51Full Moon5Thu
6Fri12:334.312:415.37:12-0.38:06-0.27:234:52Waning Gibbous6Fri
7Sat1:134.41:245.37:57-0.48:48-0.27:234:53Waning Gibbous7Sat
8Sun1:564.62:105.38:45-0.39:32-0.27:234:54Waning Gibbous8Sun
9Mon2:444.73:015.19:37-0.210:18-0.27:234:55Third Quarter9Mon
10Tue3:364.83:575.010:36-0.111:08-0.27:224:56Third Quarter10Tue
11Wed4:334.94:594.711:390.07:224:57Third Quarter11Wed
12Thu5:355.06:044.512:02-0.212:460.17:224:58Third Quarter12Thu
13Fri6:395.17:114.41:00-0.11:520.17:224:59Waning Crescent13Fri
14Sat7:435.28:154.32:00-0.12:570.07:215:00Waning Crescent14Sat
15Sun8:445.39:144.43:00-0.23:58-0.17:215:01Waning Crescent15Sun
16Mon9:415.310:104.43:58-0.24:56-0.37:215:03New Moon16Mon
17Tue10:345.411:024.54:54-0.35:49-0.47:205:04New Moon17Tue
18Wed11:245.411:524.55:47-0.36:38-0.47:205:05New Moon18Wed
19Thu12:125.36:36-0.37:23-0.47:195:06New Moon19Thu
20Fri12:394.512:575.27:22-0.38:06-0.37:195:07Waxing Crescent20Fri
21Sat1:254.51:425.18:07-0.28:46-0.37:185:08Waxing Crescent21Sat
22Sun2:104.52:264.98:51-0.19:25-0.27:185:09Waxing Crescent22Sun
23Mon2:554.53:114.89:350.010:04-0.17:175:10Waxing Crescent23Mon
24Tue3:404.53:584.610:220.110:43-0.17:165:12First Quarter24Tue
25Wed4:264.54:484.411:120.211:250.07:165:13First Quarter25Wed
26Thu5:154.55:424.212:060.27:155:14First Quarter26Thu
27Fri6:074.66:394.112:110.01:030.27:145:15First Quarter27Fri
28Sat7:014.67:354.01:010.02:010.27:135:16Waxing Gibbous28Sat
29Sun7:544.78:294.11:540.02:570.17:125:18Waxing Gibbous29Sun
30Mon8:454.99:194.12:480.03:520.07:125:19Waxing Gibbous30Mon
31Tue9:335.010:054.23:42-0.14:43-0.17:115:20Waxing Gibbous31Tue
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 9:19 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 spring phase. Tonight's moon is 2% 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 maximum.

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 New Moon (2% illuminated). This places New Castle, DE in a spring tide cycle, so tidal ranges are near their weekly maximum 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