Tides Today & Tomorrow in New Castle, DE

TIDE TIMES for Monday, August 10, 2026
The tide is currently falling in New Castle, DE.
Next low tide : in 33m at 4:52 am (0.7 ft)
Next high tide : 10:05 am (5.1 ft)
Sunset today : 8:05 pm
Sunrise tomorrow : 6:10 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8551201
Common Questions About Tides

New Castle, DE Tides - May 1953

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:215.91:574.88:490.48:310.66:027:55Waning Gibbous1Fri
2Sat1:565.92:374.89:320.59:120.76:017:56Waning Gibbous2Sat
3Sun2:375.93:234.910:180.610:000.76:007:57Waning Gibbous3Sun
4Mon3:265.94:164.911:080.610:570.85:597:58Waning Gibbous4Mon
5Tue4:235.85:155.012:010.65:587:59Third Quarter5Tue
6Wed5:275.76:195.212:010.812:580.65:568:00Third Quarter6Wed
7Thu6:365.67:235.41:090.71:550.55:558:01Third Quarter7Thu
8Fri7:445.68:245.72:150.62:510.45:548:02Waning Crescent8Fri
9Sat8:475.69:216.03:190.53:460.35:538:03Waning Crescent9Sat
10Sun9:465.710:156.34:210.34:390.25:528:04Waning Crescent10Sun
11Mon10:415.611:056.55:200.15:300.15:518:05New Moon11Mon
12Tue11:325.611:536.56:150.06:200.25:508:06New Moon12Tue
13Wed12:235.57:080.07:080.35:498:07New Moon13Wed
14Thu12:406.51:125.37:590.17:550.45:488:08New Moon14Thu
15Fri1:266.32:025.28:480.28:410.65:478:09Waxing Crescent15Fri
16Sat2:136.12:525.19:350.39:270.85:468:10Waxing Crescent16Sat
17Sun3:005.93:435.010:220.510:140.95:458:11Waxing Crescent17Sun
18Mon3:505.74:354.911:090.611:031.05:458:12Waxing Crescent18Mon
19Tue4:425.55:294.911:560.711:561.15:448:13First Quarter19Tue
20Wed5:365.36:235.012:430.75:438:13First Quarter20Wed
21Thu6:335.27:175.112:501.11:310.75:428:14First Quarter21Thu
22Fri7:295.18:095.31:471.02:190.65:418:15First Quarter22Fri
23Sat8:245.18:595.52:430.93:060.65:418:16Waxing Gibbous23Sat
24Sun9:175.09:455.63:380.83:520.65:408:17Waxing Gibbous24Sun
25Mon10:065.010:285.84:320.74:370.65:398:18Waxing Gibbous25Mon
26Tue10:524.911:085.95:240.65:220.65:398:19Waxing Gibbous26Tue
27Wed11:354.911:466.06:130.56:060.65:388:19Full Moon27Wed
28Thu12:174.97:010.46:490.65:388:20Full Moon28Thu
29Fri12:236.012:574.97:470.47:330.65:378:21Full Moon29Fri
30Sat1:016.11:394.98:320.48:170.65:378:22Waning Gibbous30Sat
31Sun1:426.12:245.09:170.49:050.65:368:22Waning Gibbous31Sun
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 7:28 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 6% 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 Waning Crescent (6% 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