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Wilmington

Water Temperature in Wilmington in Delaware River: Current and Forecast

On this page, you will find comprehensive information about the water temperature in Wilmington in Delaware River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Wilmington

50°F

TODAY

50°F

YESTERDAY

50°F

A WEEK AGO

As of today, the minimum water temperature in Wilmington ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Delaware River in Wilmington Over the Last 30 Days

Today the water temperature in Wilmington is higher than the same day in previous years. The water temperature range here in March is from 37°F to 52°F. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Wilmington are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Table of Daily Water Temperature Data

DateCurrentAverageForecast
Mar 2250°F44°F
Mar 2351°F44°F
Mar 2451°F44°F
Mar 2550°F44°F
Mar 2650°F44°F
Mar 2749°F44°F
Mar 2850°F44°F
Mar 2950°F44°F
Mar 3044°F50°F
Mar 3144°F49°F
Apr 150°F49°F
Apr 250°F49°F
Apr 350°F49°F
Apr 450°F49°F
Apr 550°F49°F
Apr 650°F49°F
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Wilmington by Month

January

MinimumAverageMaximum
32°F40°F48°F

February

MinimumAverageMaximum
32°F40°F48°F

March

MinimumAverageMaximum
37°F44°F52°F

April

MinimumAverageMaximum
41°F50°F61°F

May

MinimumAverageMaximum
46°F56°F70°F

June

MinimumAverageMaximum
57°F65°F72°F

July

MinimumAverageMaximum
63°F68°F75°F

August

MinimumAverageMaximum
63°F71°F73°F

September

MinimumAverageMaximum
52°F64°F66°F

October

MinimumAverageMaximum
46°F56°F61°F

November

MinimumAverageMaximum
37°F47°F61°F

December

MinimumAverageMaximum
37°F40°F46°F

Monthly Water Temperature Histogram for Delaware River in Wilmington

Known Beaches in the Area of Wilmington?

New Castle Battery Park

New Castle Battery Park is a 2-stars pebble beach, located in a 10 km (6 miles) radius of Wilmington. There is parking. There are restrooms. It is suitable for surfing.

Wilmington Weather

MARCH 29

50°F / 81°F
overcast

rain: 35% | wind: 14 mph

MARCH 30

59°F / 70°F
overcast

rain: 13% | wind: 11 mph

MARCH 31

61°F / 70°F
moderate rain showers

rain: 58% | wind: 16 mph

APRIL 1

34°F / 61°F
moderate rain showers

rain: 58% | wind: 16 mph

APRIL 2

37°F / 52°F
overcast

rain: 20% | wind: 14 mph

Water Temperature in Wilmington: General Trends and Swimming Opportunities

The Delaware River, which runs through Wilmington, Delaware, is a major waterway that offers various recreational opportunities. However, when it comes to swimming, the river’s water temperature can be quite chilly, especially during the cooler months. In the winter and fall, the water temperature can drop to around 40°F (4°C), making it too cold for comfortable swimming. As spring arrives and the weather warms, the river's temperature begins to rise, typically reaching between 50°F (10°C) and 60°F (15°C) by late spring and early summer.

During the summer months, the water in the Delaware River can warm up to a more comfortable range of about 70°F (21°C) to 75°F (24°C), making it more suitable for swimming, especially in calmer sections of the river. However, due to the river’s strong current and industrial history, swimming in certain parts can be challenging and sometimes unsafe. Many people prefer to enjoy the river through activities like kayaking, canoeing, or boating rather than swimming, as the current and varying depths can make it difficult to safely swim in many areas.

For those looking for a more enjoyable and safer swimming experience, nearby lakes and pools are often preferred, as they tend to maintain more consistent and warmer temperatures, typically ranging from 70°F (21°C) to 80°F (27°C) in the summer. These locations provide an excellent alternative for those seeking a more relaxing swim without the concerns posed by the Delaware River's currents and varying water temperatures.

Geographical Location of Wilmington

Nearby Cities

Frequently Asked Questions About Wilmington and its Water Temperatures

What is the current water temperature in Wilmington?

The water temperature today in Wilmington is 50°F (10.1°C).

What is the water temperature in Wilmington during the summer months?

The average water temperature in Wilmington during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Wilmington in May?

The average water temperature in Wilmington in May ranges from 46°F to 70°F (8°C to 21°C).

What is the water temperature in Wilmington in September?

The average water temperature in Wilmington in September is typically between 52°F to 66°F (11°C to 19°C).

Is it possible to swim in the Delaware River in Wilmington, and what are the available options for doing so?

Yes, it is possible to swim in the Delaware River in Wilmington. Available options include supervised beaches, and scenario-permitting, boating excursions that allow swimming.