Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Port Mahon, DE.
Next low tide : in 5h 55m at 9:14 am (0.8 ft)
Next high tide : 3:21 pm (5.6 ft)
Sunset today : 7:51 pm
Sunrise tomorrow : 6:18 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - Oct 2053

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:095.912:306.56:410.07:200.36:586:43Waning Gibbous1Wed
2Thu12:565.71:186.47:280.18:140.46:596:42Waning Gibbous2Thu
3Fri1:495.42:126.38:210.39:130.57:006:40Third Quarter3Fri
4Sat2:485.23:136.29:200.410:160.67:016:39Third Quarter4Sat
5Sun3:545.14:196.110:230.511:220.67:026:37Third Quarter5Sun
6Mon5:045.15:296.111:290.47:036:35Third Quarter6Mon
7Tue6:135.36:366.212:260.412:350.37:046:34Waning Crescent7Tue
8Wed7:155.77:356.31:250.11:370.07:056:32Waning Crescent8Wed
9Thu8:096.08:286.42:19-0.12:34-0.27:056:31Waning Crescent9Thu
10Fri8:586.39:176.43:09-0.33:27-0.37:066:29New Moon10Fri
11Sat9:456.510:046.33:55-0.44:17-0.47:076:28New Moon11Sat
12Sun10:296.610:486.14:39-0.35:03-0.37:086:26New Moon12Sun
13Mon11:126.511:315.95:20-0.25:48-0.17:096:25New Moon13Mon
14Tue11:536.45:590.06:310.27:106:23Waxing Crescent14Tue
15Wed12:155.612:356.26:390.37:150.47:116:22Waxing Crescent15Wed
16Thu12:595.31:185.97:200.58:010.77:126:21Waxing Crescent16Thu
17Fri1:455.02:045.78:030.88:490.97:146:19First Quarter17Fri
18Sat2:354.82:545.58:500.99:401.17:156:18First Quarter18Sat
19Sun3:284.63:485.49:411.010:321.17:166:16First Quarter19Sun
20Mon4:264.54:465.410:361.111:271.17:176:15First Quarter20Mon
21Tue5:254.65:455.411:331.07:186:14First Quarter21Tue
22Wed6:214.96:395.512:200.912:300.87:196:12Waxing Gibbous22Wed
23Thu7:105.27:275.71:090.71:240.67:206:11Waxing Gibbous23Thu
24Fri7:555.68:125.81:560.42:150.37:216:10Waxing Gibbous24Fri
25Sat8:365.98:555.92:400.13:040.17:226:08Full Moon25Sat
26Sun9:176.29:376.03:24-0.13:52-0.17:236:07Full Moon26Sun
27Mon9:586.410:206.04:07-0.34:39-0.27:246:06Full Moon27Mon
28Tue10:406.611:055.94:50-0.35:26-0.27:256:05Full Moon28Tue
29Wed11:246.711:525.75:34-0.36:14-0.17:266:03Waning Gibbous29Wed
30Thu12:116.76:21-0.27:060.07:276:02Waning Gibbous30Thu
31Fri12:425.51:026.57:11-0.18:020.17:286:01Waning Gibbous31Fri
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 12:17 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 neap phase. Tonight's moon is 46% 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 minimum.

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 First Quarter (46% illuminated). This places Port Mahon, DE in a neap tide cycle, so tidal ranges are near their weekly minimum 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