Newcastle Water Temperature

(Today) 2025

20.1°C / 68.2°F

The water will feel tepid. Swimming will be tolerable without a wetsuit, although it will take a little getting used to. If you intend to stay in the water for a while a 3/2mm wetsuit will be ideal.

Current weather

15°C / 60°F
(broken clouds)
Partly cloudy
Wind
6 mph
Humidity
54%

The measurements for the water temperature in Newcastle, New South Wales 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 Newcastle water temperature derived from many years of historical sea surface temperature data.

Newcastle average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Newcastle
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 21.8 22.6 22.7 21.7 20 19.1 17.4 17.4 18 18 19.5 20.2
Max °C 25.5 25.5 25.2 24.1 23.3 21.2 21.1 20.4 20.3 20.9 22.6 25
Min °F 72.7 73.8 73.8 72 69.3 67.2 64.8 64.5 65.3 65.5 68.3 70.3
Max °F 76.4 76.7 76.3 74.4 72.6 69.3 68.5 67.5 67.6 68.4 71.4 75.1

The warmest water temperature is in February with an average around 75.2°F / 24.0°C. The coldest month is August with an average water temperature of 66°F / 18.9°C.

7 day tide forecast for Newcastle

WedThuFriSatSunMonTue
  • High 12:45am
    (1.58m)
  • Low 7:30am
    (0.35m)
  • High 1:49pm
    (1.35m)
  • Low 7:37pm
    (0.62m)
  • High 1:43am
    (1.49m)
  • Low 8:19am
    (0.37m)
  • High 2:45pm
    (1.42m)
  • Low 8:48pm
    (0.58m)
  • High 2:47am
    (1.41m)
  • Low 9:10am
    (0.38m)
  • High 3:42pm
    (1.52m)
  • Low 10:01pm
    (0.51m)
  • High 3:55am
    (1.34m)
  • Low 10:03am
    (0.39m)
  • High 4:39pm
    (1.63m)
  • Low 11:12pm
    (0.42m)
  • High 5:05am
    (1.3m)
  • Low 10:58am
    (0.39m)
  • High 5:36pm
    (1.74m)
  • Low 12:18am
    (0.33m)
  • High 6:12am
    (1.28m)
  • Low 11:52am
    (0.4m)
  • High 6:31pm
    (1.83m)
  • Low 1:19am
    (0.25m)
  • High 7:14am
    (1.27m)
  • Low 12:46pm
    (0.4m)
  • High 7:24pm
    (1.9m)
7 day tide times for Newcastle

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