Newcastle average September sea temperature

Max: 20.2°C / 68.3°F

Avg: 19.1°C / 66.3°F

Min: 17.8°C / 64.1°F

These figures are calculated from several years of recorded data and are the maximum, minimum and average temperatures of all the recorded years

Average daily September sea temperatures


Monthly Newcastle water temperature chart

The bar chart below shows the average monthly sea temperatures at Newcastle over the year.

  • Jan
    23.6°C
    74.5°F
  • Feb
    24°C
    75.2°F
  • Mar
    23.9°C
    75°F
  • Apr
    23°C
    73.3°F
  • May
    21.6°C
    70.8°F
  • Jun
    20.1°C
    68.1°F
  • Jul
    19.2°C
    66.5°F
  • Aug
    18.9°C
    66.1°F
  • Sep
    19.1°C
    66.3°F
  • Oct
    19.5°C
    67°F
  • Nov
    21°C
    69.8°F
  • Dec
    22.6°C
    72.6°F