Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Friday, July 10, 2026
The tide is currently rising in Port Mahon, DE.
Next low tide (tomorrow) : 1:35 am (0.5 ft)
Next high tide : in 1h 22m at 6:36 pm (6.2 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - Jun 2071

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:086.912:455.67:05-0.57:10-0.35:378:22Waxing Crescent1Mon
2Tue1:016.71:415.57:59-0.48:06-0.15:368:22Waxing Crescent2Tue
3Wed1:576.42:405.58:54-0.39:050.15:368:23First Quarter3Wed
4Thu2:556.13:415.59:49-0.110:060.25:368:24First Quarter4Thu
5Fri3:565.84:425.510:450.011:080.35:358:24First Quarter5Fri
6Sat4:595.55:445.611:420.15:358:25First Quarter6Sat
7Sun6:025.36:425.812:110.412:370.15:358:25Waxing Gibbous7Sun
8Mon7:015.37:336.01:110.31:290.15:358:26Waxing Gibbous8Mon
9Tue7:535.38:206.12:070.22:180.15:358:26Waxing Gibbous9Tue
10Wed8:425.39:046.22:580.13:030.15:348:27Waxing Gibbous10Wed
11Thu9:275.39:466.23:460.13:460.15:348:27Full Moon11Thu
12Fri10:115.210:266.34:290.04:270.25:348:28Full Moon12Fri
13Sat10:525.111:046.25:090.05:050.25:348:28Full Moon13Sat
14Sun11:325.111:436.15:480.15:430.35:348:29Full Moon14Sun
15Mon12:115.06:260.26:220.45:348:29Waning Gibbous15Mon
16Tue12:206.012:504.97:040.37:010.55:348:30Waning Gibbous16Tue
17Wed12:595.91:294.97:430.47:440.65:358:30Waning Gibbous17Wed
18Thu1:395.72:114.98:230.48:300.75:358:30Waning Gibbous18Thu
19Fri2:225.52:565.09:060.59:200.85:358:30Third Quarter19Fri
20Sat3:095.43:465.19:510.510:150.85:358:31Third Quarter20Sat
21Sun4:025.24:405.310:400.411:150.85:358:31Third Quarter21Sun
22Mon5:015.15:385.511:340.45:368:31Third Quarter22Mon
23Tue6:025.16:355.912:180.712:310.25:368:31Waning Crescent23Tue
24Wed7:035.17:316.21:200.51:280.05:368:31Waning Crescent24Wed
25Thu8:005.38:246.62:200.22:24-0.25:368:32Waning Crescent25Thu
26Fri8:555.59:176.93:18-0.23:20-0.45:378:32New Moon26Fri
27Sat9:505.610:097.04:13-0.44:15-0.55:378:32New Moon27Sat
28Sun10:445.711:027.15:05-0.65:08-0.65:388:32New Moon28Sun
29Mon11:375.811:547.05:57-0.76:01-0.65:388:32Waxing Crescent29Mon
30Tue12:305.86:48-0.76:55-0.55:388:32Waxing Crescent30Tue
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 10:05 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 20% 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 Waning Crescent (20% 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