New Castle Water Temperature

(Today) 2024

24.6°C / 76.2°F

The water will feel warm (balmy). Most people will be OK with just bathers / swimming costume at this temperature. If you intend to stay in the water for a while a thin shorty wetsuit will suffice.

*Live data from Reedy Point, DE: 23.7°C / 74.7°F

Current weather

24°C / 74°F
(scattered clouds)
Partly cloudy
Wind
11 mph
Humidity
66%

The measurements for the water temperature in New Castle, Delaware are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly New Castle water temperature derived from many years of historical sea surface temperature data.

New Castle average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in New Castle
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3.6 3.6 3.9 5.5 8.3 15.6 21.6 22.6 20.4 14.5 10.9 6.5
Max °C 8 6.3 7.4 11.8 16 22.8 25.5 26.6 24.1 21.6 15.2 11.8
Min °F 40.2 39.5 40.4 44.4 50 63 72.4 74.3 70.2 60.9 53.3 45.8
Max °F 44.6 42.2 43.9 50.7 57.7 70.2 76.3 78.3 73.9 68 57.6 51.1

The warmest water temperature is in August with an average around 76.3°F / 24.6°C. The coldest month is February with an average water temperature of 40.8°F / 4.9°C.

7 day tide forecast for New Castle

MonTueWedThuFriSatSun
  • Low 5:36am
    (0.07m)
  • High 11:00am
    (1.78m)
  • Low 5:50pm
    (0.02m)
  • High 11:20pm
    (2.06m)
  • Low 6:26am
    (-0.02m)
  • High 11:52am
    (1.9m)
  • Low 6:44pm
    (-0.05m)
  • High 12:11am
    (2.08m)
  • Low 7:14am
    (-0.07m)
  • High 12:42pm
    (2m)
  • Low 7:38pm
    (-0.09m)
  • High 1:00am
    (2.05m)
  • Low 8:01am
    (-0.08m)
  • High 1:30pm
    (2.07m)
  • Low 8:30pm
    (-0.09m)
  • High 1:49am
    (2m)
  • Low 8:47am
    (-0.05m)
  • High 2:19pm
    (2.1m)
  • Low 9:22pm
    (-0.05m)
  • High 2:38am
    (1.91m)
  • Low 9:35am
    (-0m)
  • High 3:09pm
    (2.08m)
  • Low 10:15pm
    (0.01m)
  • High 3:30am
    (1.81m)
  • Low 10:24am
    (0.07m)
  • High 4:02pm
    (2.04m)
  • Low 11:09pm
    (0.09m)
7 day tide times for New Castle

*These tide times are estimates based on the nearest accurate location (New Castle, Chesapeake and Delaware Canal, Delaware) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.