September weather forecast and climate
Newcastle, Australia

What is the temperature in September in Newcastle?

In September, in Newcastle, the average high-temperature is 20.2°C (68.4°F), and the average low-temperature is 11.4°C (52.5°F).

How much does it rain in Newcastle in September?

In September, in Newcastle, the rain falls for 10 days. Throughout September, 72.5mm (2.9") of precipitation is accumulated.

What is the sea temperature in September in Newcastle?

The average seawater temperature, in September, is 19.2°C (66.6°F). For swimming, a surface water temperature of 19.2°C (66.6°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
Average temperature in September - Newcastle, Australia
  • Average high temperature in September: 20.2°C

The warmest month (with the highest average high temperature) is January (25.6°C).
The month with the lowest average high temperature is July (16.7°C).

  • Average low temperature in September: 11.4°C

The month with the highest average low temperature is February (19.3°C).
The coldest month (with the lowest average low temperature) is July (8.4°C).

Average humidity in September - Newcastle, Australia
  • Average humidity in September: 59%

The month with the highest relative humidity is February (74%).
The month with the lowest relative humidity is August (56%).

Average rainfall in September - Newcastle, Australia
  • Average rainfall in September: 72.5mm

The wettest month (with the highest rainfall) is March (119.7mm).
The driest month (with the lowest rainfall) is November (70.5mm).

Average rainfall days in September - Newcastle, Australia
  • Average rainfall days in September: 10 days

The month with the highest number of rainy days is May (12.6 days).
The month with the lowest number of rainy days is September (10 days).

Average sea temperature in September - Newcastle, Australia
  • Average sea temperature in September: 19.2°C

The best month for swimming (with the highest average sea temperature) is February (24°C).
The coldest month (with the lowest average sea temperature) is August (18.9°C).

Average daylight in September - Newcastle, Australia
  • Average daylight in September: 11.9h

The month with the longest days is December (Average daylight: 14.3h).
The month with shortest days is June (Average daylight: 10h).

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