Water Temperature of the Delaware River in New Castle, DE
Current Water Temperature
Measurement Time: Monday, September 15, 2025, 4:51 PM EDT
Temperature Locations
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Local Points of Interest
Delaware Memorial Bridge; Wilmington, DE; Pennsville Township, NJSponsored Content
Station Name: DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
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 (13.0 mi)
Delaware River, Middletown, DE (13.2 mi)
White Clay Creek, Landenberg, PA (13.8 mi)
Weather for New Castle, Delaware
Current Weather

Humidity: 46%
Feels Like: 77°F
Wind: E 6.9 mph
Wind Gusts: 11.8 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Mon
H: 82°F
L: 61°F

Tue
H: 68°F
L: 62°F

Wed
H: 67°F
L: 60°F

Thu
H: 85°F
L: 64°F

Fri
H: 85°F
L: 64°F
Air Quality
Nitrogen Dioxide: 17.76 μg/m3
Sulphur Dioxide: 5.18 μg/m3
Ozone: 80 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 7:10 PM
Daylight: 12 hrs 26 mins
Moon Transit: 7:52 AM
Moonset: 3:55 PM
Moon Phase: Last Quarter
Moon Illumination: 34.0%
Best Times for Fishing or Hunting
Major Periods
7:22 AM - 9:52 AM12:00 AM - 12:00 AM
Minor Periods
3:25 PM - 4:55 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Coastal Flood Advisory issued September 15 at 5:24PM EDT until September 16 at 9:00PM EDT by NWS Mount Holly NJ
Effective: Mon September 15, 2025, 5:24 PM
Expires: Tue September 16, 2025, 6:30 AM
* WHAT...Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Kent and Inland Sussex. * WHEN...From 3 PM to 9 PM EDT Tuesday. * IMPACTS...At this level, flooding begins on the most vulnerable roads in coastal and bayside communities, and along inland tidal waterways. Some partial or full road closures are possible.
A Coastal Flood Advisory means that minor tidal flooding is expected. Minor tidal flooding often results in some road closures. Usually, the most vulnerable roadways will flood. Do not leave your vehicle at a location that is prone to tidal flooding. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the National Water Prediction Service at https://water.noaa.gov/wfo/phi for additional water level and flood impact information for your local tide gauge.
Rip Current Statement issued September 15 at 5:24PM EDT until September 16 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Mon September 15, 2025, 5:24 PM
Expires: Tue September 16, 2025, 6:30 AM
* WHAT...Dangerous rip currents expected. * WHERE...Eastern Monmouth, Atlantic Coastal Cape May, Coastal Atlantic and Coastal Ocean. * WHEN...From Tuesday morning through Tuesday evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...A HIGH risk of rip currents may continue through Wednesday.
Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help.
Rip Current Statement issued September 15 at 5:24PM EDT until September 16 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Mon September 15, 2025, 5:24 PM
Expires: Tue September 16, 2025, 6:30 AM
* WHAT...Dangerous rip currents expected. * WHERE...Eastern Monmouth, Atlantic Coastal Cape May, Coastal Atlantic and Coastal Ocean. * WHEN...From Tuesday morning through Tuesday evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...A HIGH risk of rip currents may continue through Wednesday.
Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help.
Weather Forecast
Average Temperature: 71.4°F
Average Humidity: 70%
Wind: 12.1 mph
UV Index: 1.4
Air Quality
Nitrogen Dioxide: 34.28 μg/m3
Sulphur Dioxide: 6.75 μg/m3
Ozone: 82.84 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 7:10 PM
Daylight: 12 hrs 26 mins
Moon Transit: 7:52 AM
Moonset: 3:55 PM
Moon Phase: Last Quarter
Moon Illumination: 34.0%
Best Times for Fishing or Hunting
Major Periods
7:22 AM - 9:52 AM12:00 AM - 12:00 AM
Minor Periods
3:25 PM - 4:55 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 64.7°F
Average Humidity: 85%
Wind: 15 mph
UV Index: 0.9
Air Quality
Nitrogen Dioxide: 16.82 μg/m3
Sulphur Dioxide: 5.19 μg/m3
Ozone: 80.64 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 7:08 PM
Daylight: 12 hrs 24 mins
Moon Transit: 8:52 AM
Moonset: 4:41 PM
Moon Phase: Last Quarter
Moon Illumination: 23.8%
Best Times for Fishing or Hunting
Major Periods
8:22 AM - 10:52 AM12:00 AM - 12:00 AM
Minor Periods
4:11 PM - 5:41 PM12:24 AM - 1:54 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 63.4°F
Average Humidity: 87%
Wind: 12.1 mph
UV Index: 0.3
Air Quality
Nitrogen Dioxide: 22.66 μg/m3
Sulphur Dioxide: 5.99 μg/m3
Ozone: 59.88 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 7:07 PM
Daylight: 12 hrs 21 mins
Moon Transit: 9:46 AM
Moonset: 5:17 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:16 AM - 11:46 AM
Minor Periods
4:47 PM - 6:17 PM1:35 AM - 3:05 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 72°F
Average Humidity: 72%
Wind: 7.2 mph
UV Index: 1.3
Air Quality
Nitrogen Dioxide: 35.98 μg/m3
Sulphur Dioxide: 10.03 μg/m3
Ozone: 49.6 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 7:05 PM
Daylight: 12 hrs 19 mins
Moon Transit: 10:37 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:07 AM - 12:37 AM
Minor Periods
5:17 PM - 6:47 PM2:45 AM - 4:15 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 73.6°F
Average Humidity: 54%
Wind: 11.2 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 41.92 μg/m3
Sulphur Dioxide: 8.48 μg/m3
Ozone: 44.92 μg/m3
Astronomical
Sun Transit: 12:55 AM
Sunset: 7:04 PM
Daylight: 12 hrs 16 mins
Moon Transit: 11:23 AM
Moonset: 6:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM10:53 AM - 1:23 PM
Minor Periods
5:41 PM - 7:11 PM3:54 AM - 5:24 AM
Action Rating: 3 out of 5