Dee Why Water Temperature

(Today) 2025

18.6°C / 65.4°F

The water will feel medium. The water will feel a bit chilly in just bathers / swimming costume. If you plan on wearing a wetsuit 4/3mm should be thick enough.

Current weather

14°C / 57°F
(scattered clouds)
Partly cloudy
Wind
13 mph
Humidity
54%

The measurements for the water temperature in Dee Why, 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 Dee Why water temperature derived from many years of historical sea surface temperature data.

Dee Why average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Dee Why
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 21.4 22.1 21.9 20.6 19.2 17.8 17.3 17.2 17.3 17.7 18.9 19.6
Max °C 25.2 25.4 25.2 24.7 23 21.6 21.2 20.5 19.9 20.8 22.2 24.9
Min °F 72 73.1 72.7 70.7 68.1 65.6 64.7 64.2 64.2 65.1 67.3 69.4
Max °F 75.8 76.4 76 74.8 71.9 69.4 68.6 67.5 66.8 68.2 70.6 74.7

The warmest water temperature is in February with an average around 74.7°F / 23.7°C. The coldest month is September with an average water temperature of 65.5°F / 18.6°C.

7 day tide forecast for Dee Why

SunMonTueWedThuFriSat
  • Low 3:42am
    (0.12m)
  • High 9:36am
    (1.4m)
  • Low 3:18pm
    (0.24m)
  • High 9:44pm
    (1.9m)
  • Low 4:17am
    (0.13m)
  • High 10:15am
    (1.43m)
  • Low 4:01pm
    (0.27m)
  • High 10:23pm
    (1.82m)
  • Low 4:53am
    (0.16m)
  • High 10:56am
    (1.45m)
  • Low 4:46pm
    (0.31m)
  • High 11:05pm
    (1.72m)
  • Low 5:32am
    (0.21m)
  • High 11:42am
    (1.47m)
  • Low 5:37pm
    (0.39m)
  • High 11:50pm
    (1.59m)
  • Low 6:15am
    (0.28m)
  • High 12:34pm
    (1.47m)
  • Low 6:37pm
    (0.49m)
  • High 12:41am
    (1.43m)
  • Low 7:02am
    (0.38m)
  • High 1:35pm
    (1.46m)
  • Low 7:51pm
    (0.59m)
  • High 1:43am
    (1.27m)
  • Low 7:59am
    (0.48m)
  • High 2:49pm
    (1.46m)
  • Low 9:29pm
    (0.64m)
7 day tide times for Dee Why

*These tide times are estimates based on the nearest accurate location (Camp Cove, 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.