Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Port Mahon, DE.
Next low tide : 10:00 pm (1.1 ft)
Next high tide : in 1h 15m at 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 - Jan 1930

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:125.810:394.54:090.14:570.27:214:49New Moon1Wed
2Thu10:505.711:164.54:470.25:340.27:214:49Waxing Crescent2Thu
3Fri11:285.611:534.45:250.26:120.37:214:50Waxing Crescent3Fri
4Sat12:075.46:060.36:500.47:214:51Waxing Crescent4Sat
5Sun12:324.512:475.26:500.47:290.47:214:52Waxing Crescent5Sun
6Mon1:144.61:315.07:380.58:110.47:214:53First Quarter6Mon
7Tue2:004.72:214.88:320.68:570.47:214:54First Quarter7Tue
8Wed2:524.93:174.69:310.69:480.47:214:55First Quarter8Wed
9Thu3:505.14:204.510:360.610:450.37:214:56First Quarter9Thu
10Fri4:525.45:264.511:420.411:460.27:214:57Waxing Gibbous10Fri
11Sat5:525.76:284.612:460.27:204:58Waxing Gibbous11Sat
12Sun6:506.07:264.712:45-0.11:47-0.17:204:59Waxing Gibbous12Sun
13Mon7:466.38:214.91:44-0.32:44-0.47:205:00Full Moon13Mon
14Tue8:416.69:155.12:41-0.63:38-0.67:205:01Full Moon14Tue
15Wed9:356.710:085.33:35-0.84:29-0.87:195:02Full Moon15Wed
16Thu10:276.610:595.44:29-0.95:19-0.87:195:03Waning Gibbous16Thu
17Fri11:186.411:515.55:21-0.96:07-0.77:185:04Waning Gibbous17Fri
18Sat12:106.16:15-0.76:56-0.57:185:05Waning Gibbous18Sat
19Sun12:445.51:025.77:10-0.47:45-0.37:185:06Waning Gibbous19Sun
20Mon1:375.41:565.38:06-0.18:34-0.17:175:07Third Quarter20Mon
21Tue2:315.32:524.99:030.19:240.17:165:09Third Quarter21Tue
22Wed3:275.23:524.510:030.410:170.37:165:10Third Quarter22Wed
23Thu4:255.24:554.311:050.511:120.57:155:11Waning Crescent23Thu
24Fri5:235.25:554.312:060.57:155:12Waning Crescent24Fri
25Sat6:175.36:484.412:060.51:020.47:145:13Waning Crescent25Sat
26Sun7:065.47:374.412:570.51:520.37:135:14Waning Crescent26Sun
27Mon7:515.68:214.51:440.32:380.17:135:15Waning Crescent27Mon
28Tue8:345.79:034.62:280.23:190.07:125:17New Moon28Tue
29Wed9:145.89:414.73:100.13:560.07:115:18New Moon29Wed
30Thu9:525.810:174.73:490.04:320.07:105:19New Moon30Thu
31Fri10:285.810:504.84:27-0.15:060.07:095:20New Moon31Fri
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 6:40 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