Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently falling in Port Mahon, DE.
Next low tide : in 3h 37m at 5:04 am (0.3 ft)
Next high tide : 10:46 am (4.7 ft)
Sunset today : 8:31 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 - Jan 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:034.712:185.46:250.27:000.27:214:49Waxing Crescent1Thu
2Fri12:444.91:015.27:120.37:420.27:214:50First Quarter2Fri
3Sat1:305.01:505.08:050.48:280.37:214:51First Quarter3Sat
4Sun2:215.12:464.79:030.59:200.37:214:52First Quarter4Sun
5Mon3:195.33:504.510:080.510:180.27:214:53First Quarter5Mon
6Tue4:225.54:594.511:170.411:210.17:214:54Waxing Gibbous6Tue
7Wed5:285.76:054.612:240.27:214:55Waxing Gibbous7Wed
8Thu6:306.17:064.812:24-0.11:27-0.17:204:55Waxing Gibbous8Thu
9Fri7:286.38:035.01:25-0.42:26-0.47:204:56Full Moon9Fri
10Sat8:246.68:585.22:23-0.63:20-0.77:204:57Full Moon10Sat
11Sun9:186.69:515.43:19-0.84:11-0.87:204:58Full Moon11Sun
12Mon10:106.610:415.54:12-1.04:59-0.87:204:59Full Moon12Mon
13Tue11:006.411:315.65:04-0.95:46-0.87:195:01Waning Gibbous13Tue
14Wed11:496.15:55-0.76:33-0.67:195:02Waning Gibbous14Wed
15Thu12:215.612:395.76:47-0.47:19-0.37:195:03Waning Gibbous15Thu
16Fri1:115.51:295.27:40-0.18:06-0.17:185:04Third Quarter16Fri
17Sat2:035.32:224.88:340.28:530.27:185:05Third Quarter17Sat
18Sun2:555.23:184.59:300.59:430.47:175:06Third Quarter18Sun
19Mon3:515.14:194.310:300.610:360.67:175:07Third Quarter19Mon
20Tue4:495.05:214.211:300.611:310.67:165:08Waning Crescent20Tue
21Wed5:465.16:184.212:280.67:165:09Waning Crescent21Wed
22Thu6:385.37:084.312:230.51:210.47:155:10Waning Crescent22Thu
23Fri7:255.57:544.51:130.42:080.27:155:12Waning Crescent23Fri
24Sat8:085.68:364.61:590.22:500.17:145:13New Moon24Sat
25Sun8:495.89:154.72:430.03:290.07:135:14New Moon25Sun
26Mon9:275.89:514.93:24-0.14:06-0.17:125:15New Moon26Mon
27Tue10:035.810:255.04:04-0.24:41-0.17:125:16New Moon27Tue
28Wed10:385.710:595.14:43-0.25:15-0.27:115:17Waxing Crescent28Wed
29Thu11:135.611:355.35:23-0.15:49-0.17:105:19Waxing Crescent29Thu
30Fri11:515.46:040.06:25-0.17:095:20Waxing Crescent30Fri
31Sat12:135.412:325.26:500.17:050.07:085:21Waxing Crescent31Sat
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 7:55 am — 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