Rathmines Water Temperature

(Today) 2025

19.1°C / 66.3°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

10°C / 50°F
(moderate rain)
Partly cloudy
Wind
5 mph
Humidity
73%

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

Rathmines average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Rathmines
  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 Rathmines

TueWedThuFriSatSunMon
  • Low 5:23am
    (0.11m)
  • High 11:28am
    (1.14m)
  • Low 5:13pm
    (0.33m)
  • High 11:27pm
    (1.4m)
  • Low 6:05am
    (0.16m)
  • High 12:14pm
    (1.17m)
  • Low 6:10pm
    (0.36m)
  • High 12:16am
    (1.29m)
  • Low 6:48am
    (0.22m)
  • High 1:04pm
    (1.2m)
  • Low 7:13pm
    (0.39m)
  • High 1:11am
    (1.17m)
  • Low 7:35am
    (0.28m)
  • High 2:01pm
    (1.23m)
  • Low 8:25pm
    (0.4m)
  • High 2:15am
    (1.05m)
  • Low 8:26am
    (0.33m)
  • High 3:05pm
    (1.28m)
  • Low 9:44pm
    (0.38m)
  • High 3:32am
    (0.95m)
  • Low 9:24am
    (0.35m)
  • High 4:14pm
    (1.34m)
  • Low 11:05pm
    (0.32m)
  • High 4:56am
    (0.91m)
  • Low 10:26am
    (0.36m)
  • High 5:20pm
    (1.41m)
7 day tide times for Rathmines

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