Water Temperature of the Delaware River in New Castle, DE

Current Water Temperature

59.4°F 15.2°C
Cold Thermal Gear Required
59.4°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Monday, November 9, 2026, 11:15 AM EST

Temperature Locations

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Local Points of Interest

Delaware Memorial Bridge; Wilmington, DE; Pennsville Township, NJ

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Delaware River

Station Name: DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
I-295
New Castle, DE 19720
New Castle County

GPS Coordinates: 39.68927997, -75.521588

Nearby Water Temperatures

Christina River, Wilmington, DE (3.4 mi)
Christina River, Newport, DE (4.9 mi)
Brandywine Creek, Wilmington, DE (6.3 mi)
White Clay Creek, Stanton, DE (6.7 mi)
Red Clay Creek, Wooddale, DE (7.9 mi)
White Clay Creek, Newark, DE (8.2 mi)
Pike Creek, Newark, DE (9.3 mi)
Chesapeake & Delaware Canal, Port Penn, DE (9.4 mi)
Delaware River, Marcus Hook, PA (10.3 mi)
Chesapeake and Delaware Canal, Delaware City, DE (10.7 mi)
Christina River, Newark, DE (11.5 mi)
White Clay Creek, Newark, DE (12.1 mi)
Brandywine Creek, Chadds Ford, PA (13 mi)
Delaware River, Middletown, DE (13.2 mi)
White Clay Creek, Landenberg, PA (13.8 mi)

Weather for New Castle, Delaware

Current Weather

56.7°F
Sunny
Conditions: Sunny
Humidity: 50%
Feels Like: 47.7°F
Wind: NW 12.3 mph
Wind Gusts: 27.2 mph
Pressure: 29.92 in
Precipitation: 0 in
Cloud Cover: 7%
Visibility: 6 mi
UV Index: 0.2

Weather Forecast

Sunny
Mon
H: 60°F
L: 47°F
Sunny
Tue
H: 64°F
L: 43°F
Sunny
Wed
H: 62°F
L: 44°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
0.9 μg/m³
Good
PM10
0.9 μg/m³
Good
Ozone (O3)
62 μg/m³
Photochemical
NO2
3.1 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
142 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 12m daylight
Sunrise 6:40 AM
Solar Noon 11:45 AM
Sunset 4:52 PM
Moon
New • 2%
Moonrise 7:10 AM
Transit 12:00 PM
Moonset 4:43 PM

Best Times for Fishing or Hunting

Major Periods

11:30 AM - 2:00 PM
11:55 PM - 2:25 AM

Minor Periods

6:40 AM - 8:10 AM
4:13 PM - 5:43 PM
Action Rating:
Very Good 4/5

Small Craft Advisory issued November 9 at 4:56AM EST until November 9 at 7:00PM EST by NWS Mount Holly NJ

Effective: Mon November 9, 2026, 4:56 AM
Expires: Mon November 9, 2026, 7:00 PM

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and rough waters expected. * WHERE...Delaware Bay waters north of East Point NJ to Slaughter Beach DE. * WHEN...Until 7 PM EST this evening. * IMPACTS...Conditions will be hazardous to small craft.


Small Craft Advisory issued November 9 at 1:34PM EST until November 9 at 7:00PM EST by NWS Mount Holly NJ

Effective: Mon November 9, 2026, 1:34 PM
Expires: Mon November 9, 2026, 7:00 PM

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and rough waters. * WHERE...Delaware Bay waters north of East Point NJ to Slaughter Beach DE. * WHEN...Until 7 PM EST this evening. * IMPACTS...Conditions will be hazardous to small craft.


Small Craft Advisory issued November 9 at 1:06AM EST until November 9 at 7:00PM EST by NWS Mount Holly NJ

Effective: Mon November 9, 2026, 1:06 AM
Expires: Mon November 9, 2026, 7:00 PM

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and rough waters expected. * WHERE...Delaware Bay waters north of East Point NJ to Slaughter Beach DE. * WHEN...From 5 AM early this morning to 7 PM EST this evening. * IMPACTS...Conditions will be hazardous to small craft.
Monday, November 9, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 52.6°F
Average Humidity: 58%
Chance of Rain: 5%
Wind: 15.4 mph
UV Index: 2

Astronomical

Sun
10h 12m daylight
Sunrise 6:40 AM
Solar Noon 11:45 AM
Sunset 4:52 PM
Moon
New • 2%
Moonrise 7:10 AM
Transit 12:00 PM
Moonset 4:43 PM

Best Times for Fishing or Hunting

Major Periods

11:30 AM - 2:00 PM
11:55 PM - 2:25 AM

Minor Periods

6:40 AM - 8:10 AM
4:13 PM - 5:43 PM
Action Rating:
Very Good 4/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 52.6°F
Average Humidity: 64%
Chance of Rain: 5%
Wind: 13 mph
UV Index: 2.7

Astronomical

Sun
10h 10m daylight
Sunrise 6:41 AM
Solar Noon 11:46 AM
Sunset 4:51 PM
Moon
New • 0%
Moonrise 8:14 AM
Transit 12:49 PM
Moonset 5:21 PM

Best Times for Fishing or Hunting

Major Periods

12:19 PM - 2:49 PM
11:54 PM - 2:24 AM

Minor Periods

7:44 AM - 9:14 AM
4:51 PM - 6:21 PM
Action Rating:
Very Good 4/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 52.8°F
Average Humidity: 63%
Chance of Rain: 6%
Wind: 7.2 mph
UV Index: 2.5

Astronomical

Sun
10h 8m daylight
Sunrise 6:42 AM
Solar Noon 11:46 AM
Sunset 4:50 PM
Moon
New • 2%
Moonrise 9:13 AM
Transit 1:40 PM
Moonset 6:06 PM

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
1:10 PM - 3:40 PM

Minor Periods

8:43 AM - 10:13 AM
5:36 PM - 7:06 PM
Action Rating:
Good Action 3/5
The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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