Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Monday, August 10, 2026
The tide is currently falling in Port Mahon, DE.
Next low tide : in 4h 56m at 2:20 pm (0.1 ft)
Next high tide : 8:27 pm (6.6 ft)
Sunset today : 8:03 pm
Sunrise tomorrow : 6:10 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - Jan 1946

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:565.78:224.71:490.12:350.17:214:49New Moon1Tue
2Wed8:375.99:024.72:320.03:190.07:214:50New Moon2Wed
3Thu9:166.09:414.73:14-0.14:01-0.17:214:50New Moon3Thu
4Fri9:556.010:204.73:56-0.24:42-0.17:214:51New Moon4Fri
5Sat10:346.010:594.84:37-0.25:23-0.17:214:52Waxing Crescent5Sat
6Sun11:156.011:414.85:19-0.26:05-0.17:214:53Waxing Crescent6Sun
7Mon11:585.96:05-0.16:49-0.17:214:54Waxing Crescent7Mon
8Tue12:274.912:465.86:550.07:36-0.17:214:55Waxing Crescent8Tue
9Wed1:175.01:395.57:500.18:260.07:214:56First Quarter9Wed
10Thu2:125.12:375.38:500.19:200.07:204:57First Quarter10Thu
11Fri3:115.33:415.09:550.210:170.07:204:58First Quarter11Fri
12Sat4:145.54:484.911:030.111:170.07:204:59Waxing Gibbous12Sat
13Sun5:195.75:544.912:10-0.17:205:00Waxing Gibbous13Sun
14Mon6:206.06:554.912:17-0.21:13-0.37:195:01Waxing Gibbous14Mon
15Tue7:176.27:525.01:15-0.32:12-0.57:195:02Waxing Gibbous15Tue
16Wed8:116.38:455.12:12-0.53:07-0.67:195:03Full Moon16Wed
17Thu9:036.49:365.23:05-0.63:58-0.67:185:04Full Moon17Thu
18Fri9:536.310:255.23:55-0.64:45-0.67:185:05Full Moon18Fri
19Sat10:406.111:115.14:43-0.55:29-0.47:175:06Waning Gibbous19Sat
20Sun11:265.911:575.15:30-0.46:12-0.27:175:08Waning Gibbous20Sun
21Mon12:115.66:16-0.16:550.07:165:09Waning Gibbous21Mon
22Tue12:435.012:565.37:020.17:370.27:165:10Waning Gibbous22Tue
23Wed1:294.91:445.07:500.48:190.47:155:11Third Quarter23Wed
24Thu2:174.82:344.68:400.69:030.57:155:12Third Quarter24Thu
25Fri3:074.83:294.49:340.79:500.77:145:13Third Quarter25Fri
26Sat4:014.84:284.210:310.810:410.77:135:14Third Quarter26Sat
27Sun4:574.95:274.211:300.711:340.67:125:16Waning Crescent27Sun
28Mon5:515.16:224.312:270.67:125:17Waning Crescent28Mon
29Tue6:415.47:114.412:270.51:200.47:115:18Waning Crescent29Tue
30Wed7:275.67:564.61:170.22:090.27:105:19Waning Crescent30Wed
31Thu8:115.88:384.72:050.02:550.07:095:20New Moon31Thu
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 5:23 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 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 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 (6% 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