Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Friday, July 31, 2026
The tide is currently rising in Port Mahon, DE.
Next low tide : 5:49 pm (0.2 ft)
Next high tide : in 1h 05m at 11:34 am (5.2 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 6:01 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - Jan 1965

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:245.88:484.82:180.13:060.07:214:49New Moon1Fri
2Sat9:005.89:304.73:000.13:480.07:214:50New Moon2Sat
3Sun9:425.910:064.63:360.04:240.07:214:51New Moon3Sun
4Mon10:185.810:424.64:180.05:000.17:214:52New Moon4Mon
5Tue10:545.811:184.64:540.15:420.27:214:52Waxing Crescent5Tue
6Wed11:365.75:360.16:180.27:214:53Waxing Crescent6Wed
7Thu12:004.612:125.56:180.27:000.37:214:54Waxing Crescent7Thu
8Fri12:364.612:545.37:000.37:420.37:214:55Waxing Crescent8Fri
9Sat1:244.71:425.17:540.48:240.37:214:56First Quarter9Sat
10Sun2:124.92:364.98:480.59:120.37:204:57First Quarter10Sun
11Mon3:065.03:364.79:480.510:120.27:204:58First Quarter11Mon
12Tue4:125.34:424.711:000.411:120.17:204:59Waxing Gibbous12Tue
13Wed5:125.65:484.712:060.27:205:00Waxing Gibbous13Wed
14Thu6:125.96:484.812:12-0.11:06-0.17:195:01Waxing Gibbous14Thu
15Fri7:126.37:485.01:12-0.32:06-0.47:195:02Waxing Gibbous15Fri
16Sat8:066.58:425.22:06-0.53:06-0.77:195:04Full Moon16Sat
17Sun9:006.79:365.33:06-0.84:00-0.87:185:05Full Moon17Sun
18Mon9:546.710:305.44:00-0.94:48-0.87:185:06Full Moon18Mon
19Tue10:486.511:185.54:48-0.95:36-0.87:175:07Waning Gibbous19Tue
20Wed11:366.35:42-0.86:24-0.67:175:08Waning Gibbous20Wed
21Thu12:125.412:305.96:36-0.57:12-0.47:165:09Waning Gibbous21Thu
22Fri1:005.41:185.57:30-0.28:00-0.27:155:10Third Quarter22Fri
23Sat1:545.32:125.18:240.18:480.17:155:11Third Quarter23Sat
24Sun2:485.13:124.79:180.39:420.37:145:12Third Quarter24Sun
25Mon3:425.14:124.510:180.510:300.57:145:14Third Quarter25Mon
26Tue4:425.15:124.411:180.611:240.57:135:15Waning Crescent26Tue
27Wed5:365.16:064.412:180.57:125:16Waning Crescent27Wed
28Thu6:305.37:004.412:180.51:120.47:115:17Waning Crescent28Thu
29Fri7:185.57:484.51:060.42:000.27:105:18Waning Crescent29Fri
30Sat8:005.68:304.61:540.22:420.17:105:19New Moon30Sat
31Sun8:425.89:064.72:360.13:240.07:095:21New Moon31Sun
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 2:41 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 96% 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 Waning Gibbous (96% 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