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 3h 17m at 5:49 am (0.5 ft)
Next high tide : 11:03 am (5.3 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 - Jul 1951

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:285.010:486.15:030.54:540.65:378:33Waning Crescent1Sun
2Mon11:155.011:306.05:520.55:400.65:388:33New Moon2Mon
3Tue11:595.06:370.46:230.75:388:33New Moon3Tue
4Wed12:096.012:414.97:200.47:040.75:398:33New Moon4Wed
5Thu12:465.91:204.98:000.57:430.75:398:33New Moon5Thu
6Fri1:215.91:574.98:380.58:210.75:408:33Waxing Crescent6Fri
7Sat1:545.82:324.99:140.58:580.75:418:32Waxing Crescent7Sat
8Sun2:285.83:075.09:480.59:380.85:418:32Waxing Crescent8Sun
9Mon3:055.83:445.210:220.510:210.85:428:32Waxing Crescent9Mon
10Tue3:465.74:265.410:580.511:120.95:428:31First Quarter10Tue
11Wed4:345.65:145.611:380.55:438:31First Quarter11Wed
12Thu5:295.46:095.712:111.012:240.55:448:31First Quarter12Thu
13Fri6:315.27:095.91:181.01:190.65:448:30First Quarter13Fri
14Sat7:395.08:136.02:291.02:210.65:458:30Waxing Gibbous14Sat
15Sun8:484.99:166.23:370.93:270.65:468:29Waxing Gibbous15Sun
16Mon9:525.010:176.34:420.74:330.65:478:29Waxing Gibbous16Mon
17Tue10:535.111:156.45:430.55:360.55:478:28Full Moon17Tue
18Wed11:505.26:400.36:360.45:488:27Full Moon18Wed
19Thu12:116.512:455.37:330.27:320.35:498:27Full Moon19Thu
20Fri1:056.41:395.48:240.18:260.35:508:26Waning Gibbous20Fri
21Sat1:586.42:325.59:120.19:180.45:518:25Waning Gibbous21Sat
22Sun2:506.23:255.69:580.110:110.55:528:25Waning Gibbous22Sun
23Mon3:416.04:175.710:440.211:040.65:528:24Waning Gibbous23Mon
24Tue4:335.75:095.711:290.311:580.85:538:23Third Quarter24Tue
25Wed5:265.56:025.712:150.45:548:22Third Quarter25Wed
26Thu6:205.36:555.812:530.91:020.55:558:21Third Quarter26Thu
27Fri7:175.17:495.81:490.91:510.65:568:21Third Quarter27Fri
28Sat8:135.08:415.82:450.92:400.75:578:20Waning Crescent28Sat
29Sun9:084.99:325.93:400.83:310.75:588:19Waning Crescent29Sun
30Mon10:005.010:205.94:320.74:210.75:588:18Waning Crescent30Mon
31Tue10:485.011:046.05:220.65:100.75:598:17Waning Crescent31Tue
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 8:26 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