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 : in 2h 47m at 5:47 pm (0.5 ft)
Next high tide : 11:25 pm (6.4 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 - Oct 1950

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:285.12:365.78:520.99:511.15:585:45Waning Gibbous1Sun
2Mon3:134.93:185.69:301.010:401.25:595:44Third Quarter2Mon
3Tue4:034.74:075.510:161.011:341.26:005:42Third Quarter3Tue
4Wed4:594.75:055.511:121.16:005:41Third Quarter4Wed
5Thu5:584.76:085.512:301.212:141.06:015:39Third Quarter5Thu
6Fri6:564.87:105.61:261.01:170.96:025:37Waning Crescent6Fri
7Sat7:505.08:065.82:190.92:170.76:035:36Waning Crescent7Sat
8Sun8:405.38:575.93:100.73:150.56:045:34Waning Crescent8Sun
9Mon9:265.79:446.03:590.54:110.46:055:33Waning Crescent9Mon
10Tue10:106.010:306.14:450.35:040.26:065:31New Moon10Tue
11Wed10:536.211:166.05:290.25:560.16:075:30New Moon11Wed
12Thu11:376.46:130.26:490.26:085:28New Moon12Thu
13Fri12:025.912:226.56:580.27:410.36:095:27Waxing Crescent13Fri
14Sat12:515.71:116.47:440.38:360.46:115:25Waxing Crescent14Sat
15Sun1:435.42:046.38:340.59:330.66:125:24Waxing Crescent15Sun
16Mon2:415.23:026.19:290.710:330.86:135:22First Quarter16Mon
17Tue3:445.04:085.810:300.811:340.86:145:21First Quarter17Tue
18Wed4:514.95:175.711:340.96:155:19First Quarter18Wed
19Thu5:594.96:265.612:350.812:380.96:165:18First Quarter19Thu
20Fri7:035.17:295.71:330.71:400.86:175:16Waxing Gibbous20Fri
21Sat8:025.38:255.72:280.52:390.76:185:15Waxing Gibbous21Sat
22Sun8:545.59:145.73:180.43:340.56:195:14Waxing Gibbous22Sun
23Mon9:425.79:595.74:050.34:250.46:205:12Waxing Gibbous23Mon
24Tue10:255.810:415.64:480.25:130.46:215:11Full Moon24Tue
25Wed11:045.911:225.55:280.25:570.46:225:10Full Moon25Wed
26Thu11:425.86:050.36:400.56:235:08Full Moon26Thu
27Fri12:015.312:175.86:400.47:210.66:245:07Full Moon27Fri
28Sat12:405.112:505.77:130.68:010.76:255:06Waning Gibbous28Sat
29Sun1:194.91:235.67:440.78:410.86:275:05Waning Gibbous29Sun
30Mon1:594.71:585.58:170.79:240.96:285:03Waning Gibbous30Mon
31Tue2:414.62:375.58:550.810:090.96:295:02Waning 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 8:36 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 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