Newcastle
Australia
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Newcastle, Australia

August, the last month of the winter, in Newcastle, is another comfortable month, with temperature in the range of an average low of 10.8°C (51.4°F) and an average high of 17.4°C (63.3°F).

Temperature

In Newcastle, the average high-temperature in August is essentially the same as in July - a still comfortable 17.4°C (63.3°F). In Newcastle, in August, the average low-temperature is 10.8°C (51.4°F).

Humidity

Months with the lowest humidity are August and September, with an average relative humidity of 69%.

Rainfall

August is the month with the least rainfall. Rain falls for 10.2 days and accumulates 34mm (1.34") of precipitation.

Sea temperature

With an average sea temperature of 18.9°C (66°F), August is the month with the coldest seawater.
Note: Swimming in 18.9°C (66°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In August, the average length of the day in Newcastle is 10.9h.

Sunshine

In Newcastle, the average sunshine is 8.5h.

UV index

Months with the lowest UV index in Newcastle are May through August, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in August in Newcastle?

The average high-temperature, in August, in Newcastle, is 17.4°C (63.3°F), while the average low-temperature is 10.8°C (51.4°F).

What are the least humid months in Newcastle?

Months with the lowest humidity are August and September, with an average relative humidity of 69%.

What is the average humidity in August in Newcastle?

In Newcastle, the average relative humidity in August is 69%.

How many days does it rain in August in Newcastle?

In Newcastle, Australia, in August, during 10.2 rainfall days, 34mm (1.34") of precipitation is typically accumulated.

What is the driest month in Newcastle?

The month with the least rainfall in Newcastle is August when the rain falls for 10.2 days and typically collects 34mm (1.34") of precipitation.

What month is the sea coldest in Newcastle?

August is the month with the coldest seawater, with an average sea temperature of 18.9°C (66°F).

What is the sea water temperature in August in Newcastle?

In August, the average sea temperature in Newcastle is 18.9°C (66°F). For swimming, a surface water temperature of 18.9°C (66°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).

What is the average length of the day in August in Newcastle?

In August, the average length of the day in Newcastle is 10.9h.

How long on average sun shines in August in Newcastle?

The average sunshine in August is 8.5h.

When is the lowest UV index in Newcastle?

Months with the lowest UV index in Newcastle are May through August, with an average maximum UV index of 4.

How high is the UV index in August in Newcastle?

In August, the average daily maximum UV index in Newcastle is 4. A UV Index reading of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in August - Newcastle, Australia
  • Average high temperature in August: 17.4°C

The warmest month (with the highest average high temperature) is January (26.7°C).
The month with the lowest average high temperature is July (16.3°C).

  • Average low temperature in August: 10.8°C

The month with the highest average low temperature is January (20.3°C).
The coldest month (with the lowest average low temperature) is August (10.8°C).

Average humidity in August - Newcastle, Australia
  • Average humidity in August: 69%

The month with the highest relative humidity is February (77%).
Months with the lowest relative humidity are August and September (69%).

Average rainfall in August - Newcastle, Australia
  • Average rainfall in August: 34mm

The wettest month (with the highest rainfall) is February (79mm).
The driest month (with the lowest rainfall) is August (34mm).

Average rainfall days in August - Newcastle, Australia
  • Average rainfall days in August: 10.2 days

The month with the highest number of rainy days is March (15.6 days).
The month with the lowest number of rainy days is August (10.2 days).

Average sea temperature in August - Newcastle, Australia
  • Average sea temperature in August: 18.9°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 August / Average sunshine in August - Newcastle, Australia
  • Average daylight in August: 10.9h

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

  • Average sunshine in August: 8.5h

Months with most sunshine are November and December (Average sunshine: 9.8h).
The month with least sunshine is June (Average sunshine: 5.8h).

Average UV index in August - Newcastle, Australia
  • Average UV index in August: 4

Months with the highest UV index are January, February, November and December (UV index 6).
Months with the lowest UV index are May, June, July and August (UV index 4).