Tides Today & Tomorrow in Port Mahon, DE

TIDE TIMES for Saturday, July 11, 2026
The tide is currently rising in Port Mahon, DE.
Next low tide : 1:30 pm (0.2 ft)
Next high tide : in 1h 07m at 7:12 am (4.8 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 5:45 am
Moon phase : Waning Crescent (11% illuminated)
Tide Station Location : Station #8554399
Common Questions About Tides

Port Mahon, DE Tides - May 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:256.19:506.73:39-0.63:57-0.66:017:55Full Moon1Sun
2Mon10:136.010:366.84:30-0.74:42-0.56:007:56Full Moon2Mon
3Tue11:005.811:206.75:18-0.65:26-0.45:597:57Full Moon3Tue
4Wed11:465.66:04-0.46:08-0.15:587:58Waning Gibbous4Wed
5Thu12:036.512:315.36:49-0.16:510.25:577:59Waning Gibbous5Thu
6Fri12:476.21:185.17:340.17:350.55:568:00Waning Gibbous6Fri
7Sat1:325.92:074.98:210.48:210.75:548:01Waning Gibbous7Sat
8Sun2:195.62:584.79:080.69:110.95:538:02Third Quarter8Sun
9Mon3:105.43:524.69:570.810:031.15:528:03Third Quarter9Mon
10Tue4:055.24:494.610:480.810:591.15:518:04Third Quarter10Tue
11Wed5:045.15:474.811:400.811:571.05:508:05Third Quarter11Wed
12Thu6:025.16:405.012:310.75:508:06Waning Crescent12Thu
13Fri6:565.27:275.412:540.81:190.55:498:06Waning Crescent13Fri
14Sat7:445.38:115.71:480.62:050.35:488:07Waning Crescent14Sat
15Sun8:295.38:516.02:380.42:500.15:478:08Waning Crescent15Sun
16Mon9:125.49:316.23:260.23:330.05:468:09New Moon16Mon
17Tue9:555.410:116.44:130.04:16-0.15:458:10New Moon17Tue
18Wed10:375.410:526.64:58-0.14:59-0.25:448:11New Moon18Wed
19Thu11:215.411:356.65:43-0.25:43-0.25:448:12New Moon19Thu
20Fri12:075.46:30-0.26:30-0.15:438:13Waxing Crescent20Fri
21Sat12:206.612:565.37:19-0.17:200.05:428:14Waxing Crescent21Sat
22Sun1:106.51:505.28:12-0.18:160.15:418:14Waxing Crescent22Sun
23Mon2:046.32:485.29:070.09:150.35:418:15First Quarter23Mon
24Tue3:036.13:505.310:030.110:180.35:408:16First Quarter24Tue
25Wed4:065.94:545.411:020.111:230.35:408:17First Quarter25Wed
26Thu5:135.75:595.712:010.05:398:18Waxing Gibbous26Thu
27Fri6:195.66:586.012:280.212:58-0.15:398:18Waxing Gibbous27Fri
28Sat7:195.67:526.31:300.01:52-0.25:388:19Waxing Gibbous28Sat
29Sun8:145.68:426.52:28-0.22:43-0.35:388:20Waxing Gibbous29Sun
30Mon9:055.69:296.63:23-0.33:32-0.35:378:21Full Moon30Mon
31Tue9:545.610:146.64:13-0.34:18-0.25:378:21Full Moon31Tue
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 10:21 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 11% 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 Crescent (11% 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