Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in Port Mahon, DE.
Next low tide : in 4h 21m at 1:12 pm (0.6 ft)
Next high tide : 7:25 pm (5.7 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - Dec 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:356.48:005.51:37-0.32:20-0.37:024:39New Moon1Sun
2Mon8:246.68:505.52:27-0.53:13-0.57:034:39New Moon2Mon
3Tue9:136.89:415.63:18-0.64:04-0.67:044:38New Moon3Tue
4Wed10:046.810:335.54:09-0.74:56-0.67:054:38Waxing Crescent4Wed
5Thu10:556.711:265.55:01-0.65:48-0.67:064:38Waxing Crescent5Thu
6Fri11:496.55:56-0.56:42-0.47:064:38Waxing Crescent6Fri
7Sat12:225.412:456.26:53-0.37:37-0.37:074:38Waxing Crescent7Sat
8Sun1:215.31:445.97:52-0.18:32-0.27:084:38First Quarter8Sun
9Mon2:225.32:455.58:530.09:28-0.17:094:38First Quarter9Mon
10Tue3:245.33:485.39:550.110:240.07:104:38First Quarter10Tue
11Wed4:265.44:515.110:580.211:200.07:114:38Waxing Gibbous11Wed
12Thu5:255.55:505.111:590.17:114:39Waxing Gibbous12Thu
13Fri6:185.76:425.112:120.012:550.17:124:39Waxing Gibbous13Fri
14Sat7:055.87:305.11:020.01:460.07:134:39Waxing Gibbous14Sat
15Sun7:495.98:155.11:47-0.12:33-0.17:144:39Full Moon15Sun
16Mon8:316.08:585.12:31-0.13:16-0.17:144:40Full Moon16Mon
17Tue9:116.09:395.03:11-0.13:56-0.17:154:40Full Moon17Tue
18Wed9:506.010:184.93:50-0.14:340.07:154:40Full Moon18Wed
19Thu10:285.910:564.94:290.05:120.17:164:41Waning Gibbous19Thu
20Fri11:055.811:344.85:070.05:490.27:174:41Waning Gibbous20Fri
21Sat11:435.65:460.16:270.37:174:42Waning Gibbous21Sat
22Sun12:134.812:225.46:280.27:060.37:184:42Waning Gibbous22Sun
23Mon12:534.81:055.27:140.47:480.47:184:43Third Quarter23Mon
24Tue1:384.81:515.08:040.58:320.47:184:43Third Quarter24Tue
25Wed2:274.92:434.98:580.59:220.47:194:44Third Quarter25Wed
26Thu3:215.03:424.79:580.510:170.37:194:45Third Quarter26Thu
27Fri4:205.34:454.711:010.411:150.17:194:45Waning Crescent27Fri
28Sat5:205.65:474.812:030.27:204:46Waning Crescent28Sat
29Sun6:175.96:455.012:13-0.11:03-0.17:204:47Waning Crescent29Sun
30Mon7:116.37:405.21:10-0.42:01-0.47:204:47Waning Crescent30Mon
31Tue8:046.58:355.52:06-0.62:56-0.77:204:48New Moon31Tue
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 4:18 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 84% 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 Waxing Gibbous (84% 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