Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently rising in Port Mahon, DE.
Next low tide : 3:20 pm (-0.1 ft)
Next high tide : in 53m at 9:02 am (5.2 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 6:11 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - Feb 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:495.44:184.910:310.110:480.18:096:21First Quarter1Tue
2Wed4:505.35:234.711:340.211:460.28:086:22First Quarter2Wed
3Thu5:535.36:274.612:380.38:076:23Waxing Gibbous3Thu
4Fri6:525.47:254.612:430.31:380.28:066:24Waxing Gibbous4Fri
5Sat7:455.58:164.81:380.22:320.18:056:25Waxing Gibbous5Sat
6Sun8:325.69:034.92:280.13:200.08:046:27Waxing Gibbous6Sun
7Mon9:165.79:465.03:140.04:02-0.18:036:28Full Moon7Mon
8Tue9:575.810:265.03:56-0.14:41-0.28:026:29Full Moon8Tue
9Wed10:365.811:035.14:36-0.15:17-0.28:016:30Full Moon9Wed
10Thu11:135.811:395.15:15-0.25:51-0.18:006:31Full Moon10Thu
11Fri11:485.75:52-0.16:250.07:596:32Waning Gibbous11Fri
12Sat12:135.112:235.66:30-0.16:580.17:576:34Waning Gibbous12Sat
13Sun12:475.112:595.37:090.17:330.27:566:35Waning Gibbous13Sun
14Mon1:235.21:385.17:510.28:100.37:556:36Waning Gibbous14Mon
15Tue2:035.22:214.98:380.48:530.47:546:37Third Quarter15Tue
16Wed2:485.23:114.69:310.69:420.47:536:38Third Quarter16Wed
17Thu3:425.24:104.410:320.610:400.57:516:39Third Quarter17Thu
18Fri4:435.35:194.411:390.611:460.47:506:40Third Quarter18Fri
19Sat5:515.56:294.512:460.47:496:42Waning Crescent19Sat
20Sun6:565.87:324.812:520.21:490.17:476:43Waning Crescent20Sun
21Mon7:556.28:295.21:54-0.12:47-0.37:466:44Waning Crescent21Mon
22Tue8:516.59:225.62:53-0.53:40-0.77:456:45New Moon22Tue
23Wed9:446.710:135.93:49-0.84:31-0.97:436:46New Moon23Wed
24Thu10:356.811:036.14:42-1.15:18-1.17:426:47New Moon24Thu
25Fri11:256.711:516.25:33-1.16:05-1.17:416:48Waxing Crescent25Fri
26Sat12:146.46:24-1.06:51-0.97:396:49Waxing Crescent26Sat
27Sun12:406.21:046.07:17-0.87:39-0.67:386:50Waxing Crescent27Sun
28Mon1:306.11:565.68:10-0.58:28-0.37:366:51Waxing Crescent28Mon
29Tue2:225.92:515.19:06-0.19:190.17:356:52First Quarter29Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8554399)

Common Questions About Port Mahon, DE Tides

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What time does the tide turn (slack tide) in Port Mahon, DE today?

Slack tide in Port Mahon, DE is approximately 12:11 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 Port Mahon, DE?

Port Mahon, 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 Port Mahon, 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 Port Mahon, DE?

Tide predictions for Port Mahon, 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 Port Mahon, DE?

Tide data for Port Mahon, DE is sourced from NOAA Station #8554399. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8554399.

What is the moon phase in Port Mahon, DE tonight?

Tonight the moon over Port Mahon, DE is New Moon (2% illuminated). This places Port Mahon, 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