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Water temperature in Delaware City (DE) in July

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Is it warm enough to swim in Delaware City in July? Average water temperature in Delaware City in July is 78.8°F and therefore suitable for comfortable swimming. The warmest sea in Delaware City in July is 86.5°F, and the coldest is 72.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Delaware City

Changes water temperature in Delaware City in July 2025, 2024

To get an accurate forecast for the water temperature in Delaware City for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Delaware City, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of July.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
July 180.6°F79.2°F73.4°F80.6°F
July 280.2°F79.2°F72.9°F81.1°F
July 380.8°F79.2°F72.5°F80.8°F
July 479.7°F78.6°F72.5°F81.5°F
July 580.4°F79.9°F72.3°F81.3°F
July 681°F81.1°F72.1°F83.7°F
July 783.8°F82.6°F73.2°F83.8°F
July 882.2°F83.3°F73.6°F83.3°F
July 981.7°F82.8°F73.4°F82.8°F
July 1081°F82.4°F73.8°F82.4°F
July 1182.4°F86.5°F74.1°F86.5°F
July 1282.2°F83.8°F74.3°F83.8°F
July 1381.9°F84.9°F74.3°F84.9°F
July 1482.4°F83.8°F74.3°F83.8°F
July 1582.9°F84.9°F73.8°F84.9°F
Day 2025 2024 Min Max
July 1682.8°F85.5°F74.3°F85.5°F
July 1783.5°F84.6°F74.7°F84.6°F
July 1886°F85.1°F74.3°F86°F
July 1984.7°F85.1°F74.1°F85.1°F
July 2083.7°F83.7°F74.1°F84.2°F
July 2185.1°F83.5°F73.6°F85.5°F
July 2284.2°F82.8°F73.4°F86.2°F
July 2382.6°F82.9°F72.9°F85.3°F
July 2481.9°F82.2°F72.7°F83.5°F
July 2582.8°F79.3°F72.3°F84.4°F
July 2683.1°F82.8°F73.2°F84.6°F
July 2782.2°F82.6°F73.4°F84.6°F
July 2883.7°F82.6°F73.6°F84.7°F
July 2984.2°F80.1°F73.8°F85.8°F
July 3085.3°F80.6°F74.1°F85.5°F
July 3185.1°F82.6°F73.9°F85.1°F
Delaware City water temp chart in July

Average water temperature in Delaware City in July over a decade

20162017201820192020
79.2°F78.6°F79.9°F81.9°F82.6°F
20212022202320242025
81.9°F80.8°F80.4°F82.6°F82.8°F

Delaware City sea state in July

Chart comparing the height of waves in Delaware City in July over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Delaware City in July

Delaware City water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in July?

Want to know where the water temperature in July is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in July. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Sandy Cove79.2°F71.1°F89.1°F
White Crystal Beach79.3°F71.2°F88.5°F
Dover78.8°F73.6°F84.7°F
Bowers78.3°F72.9°F84.6°F
Delaware Bay77.4°F72.3°F82.9°F
Villas76.8°F71.4°F84.6°F
Rock Hall80.6°F73°F88°F
Baltimore80.4°F73°F87.4°F
Slaughter Beach76.8°F71.4°F84°F
Essex80.4°F72.7°F87.3°F

Delaware photo gallery

  • rural Delaware Bay, middle section, Nantuxent Cove, picture taken at Money Island NJ
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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Delaware City is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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