Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Monday, June 29, 2026
The tide is currently falling in Port Mahon, DE.
Next low tide : in 1h 41m at 4:10 pm (0.5 ft)
Next high tide : 10:17 pm (6.1 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:38 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - Dec 2054

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:346.311:015.24:38-0.25:20-0.17:024:39Waxing Crescent1Tue
2Wed11:176.011:464.95:200.06:030.17:034:39Waxing Crescent2Wed
3Thu12:015.86:030.36:480.37:044:38Waxing Crescent3Thu
4Fri12:324.712:475.56:480.57:330.57:054:38Waxing Crescent4Fri
5Sat1:204.61:355.37:350.68:190.67:054:38First Quarter5Sat
6Sun2:104.52:275.18:250.89:060.77:064:38First Quarter6Sun
7Mon3:034.53:215.09:180.89:550.77:074:38First Quarter7Mon
8Tue3:574.64:184.910:140.810:450.67:084:38First Quarter8Tue
9Wed4:524.85:134.911:120.711:350.47:094:38Waxing Gibbous9Wed
10Thu5:435.16:055.012:070.57:104:38Waxing Gibbous10Thu
11Fri6:295.46:525.012:230.21:000.37:114:38Waxing Gibbous11Fri
12Sat7:135.87:375.11:100.01:510.17:114:39Waxing Gibbous12Sat
13Sun7:566.08:225.21:57-0.22:40-0.17:124:39Full Moon13Sun
14Mon8:396.29:075.32:43-0.43:28-0.37:134:39Full Moon14Mon
15Tue9:236.49:535.33:30-0.54:15-0.47:134:39Full Moon15Tue
16Wed10:086.510:405.34:16-0.55:03-0.47:144:40Waning Gibbous16Wed
17Thu10:566.411:295.35:05-0.55:52-0.47:154:40Waning Gibbous17Thu
18Fri11:466.35:56-0.46:44-0.37:154:40Waning Gibbous18Fri
19Sat12:225.212:406.16:51-0.37:38-0.37:164:41Waning Gibbous19Sat
20Sun1:195.21:385.87:50-0.28:33-0.27:164:41Third Quarter20Sun
21Mon2:195.22:405.68:51-0.19:30-0.17:174:42Third Quarter21Mon
22Tue3:225.33:455.49:550.010:28-0.17:174:42Third Quarter22Tue
23Wed4:265.44:515.210:590.011:26-0.27:184:43Waning Crescent23Wed
24Thu5:275.75:535.212:02-0.17:184:43Waning Crescent24Thu
25Fri6:235.96:485.212:21-0.31:01-0.37:194:44Waning Crescent25Fri
26Sat7:146.17:405.21:14-0.31:56-0.47:194:45Waning Crescent26Sat
27Sun8:026.28:285.22:03-0.42:46-0.57:194:45New Moon27Sun
28Mon8:476.29:135.22:50-0.43:32-0.57:204:46New Moon28Mon
29Tue9:306.19:575.13:34-0.34:15-0.47:204:47New Moon29Tue
30Wed10:116.010:385.04:15-0.24:55-0.37:204:47New Moon30Wed
31Thu10:525.911:204.84:55-0.15:35-0.17:204:48Waxing Crescent31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8554399)

Common Questions About Port Mahon, DE Tides

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

Slack tide in Port Mahon, DE is approximately 7:13 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 100% 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 Full Moon (100% 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