Sydney
Australia
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Sydney, Australia

The landmarks of the city of Sydney, Australia viewed from above the vast Parramatta River
The landmarks of the city of Sydney, Australia viewed from above the vast Parramatta River
May, the last month of the autumn, in Sydney, is also an enjoyable month, with average temperature fluctuating between 19.5°C (67.1°F) and 11.6°C (52.9°F).

Temperature

In Sydney, the average high-temperature is essentially the same as in April - an enjoyable 19.5°C (67.1°F). In Sydney, the average low-temperature is 11.6°C (52.9°F).

Humidity

In May, the average relative humidity is 57%.

Rainfall

In Sydney, in May, it is raining for 13 days, with typically 119.9mm (4.7") of accumulated precipitation. In Sydney, during the entire year, the rain falls for 143.4 days and collects up to 1212.1mm (47.7") of precipitation.

Sea temperature

In Sydney, the average seawater temperature is 20.8°C (69.4°F). Swimming in 20.8°C (69.4°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 May, the average length of the day in Sydney is 10.4h.

Sunshine

The average sunshine in May is 6.3h.

UV index

In May, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
In May, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in May in Sydney?

In Sydney, in May, the average high-temperature is 19.5°C (67.1°F), and the average low-temperature is 11.6°C (52.9°F).

What is the average humidity in May in Sydney?

In May, the average relative humidity in Sydney is 57%.

How much does it rain in Sydney in May?

In Sydney, Australia, in May, during 13 rainfall days, 119.9mm (4.7") of precipitation is typically accumulated.

How cold is the water in May in Sydney?

In Sydney, Australia, in May, the average water temperature is 20.8°C (69.4°F). Swimming in 20.8°C (69.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Sydney have in May?

In May, the average length of the day in Sydney, Australia, is 10.4h.

How long on average sun shines in May in Sydney?

The average sunshine in May in Sydney, Australia, is 6.3h.

What is the UV index reading in May in Sydney?

In May, the average daily maximum UV index in Sydney is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.
Average temperature in May - Sydney, Australia
  • Average high temperature in May: 19.5°C

The warmest month (with the highest average high temperature) is January (25.9°C).
The month with the lowest average high temperature is July (16.3°C).

  • Average low temperature in May: 11.6°C

The month with the highest average low temperature is February (18.8°C).
The coldest month (with the lowest average low temperature) is July (8.1°C).

Average humidity in May - Sydney, Australia
  • Average humidity in May: 57%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (49%).

Average rainfall in May - Sydney, Australia
  • Average rainfall in May: 119.9mm

The wettest month (with the highest rainfall) is June (131.9mm).
The driest month (with the lowest rainfall) is September (68.3mm).

Average rainfall days in May - Sydney, Australia
  • Average rainfall days in May: 13 days

The month with the highest number of rainy days is March (13.6 days).
The month with the lowest number of rainy days is August (10.4 days).

Average sea temperature in May - Sydney, Australia
  • Average sea temperature in May: 20.8°C

The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.6°C).

Average daylight in May / Average sunshine in May - Sydney, Australia
  • Average daylight in May: 10.4h

The month with the longest days is December (Average daylight: 14.4h).
The month with shortest days is June (Average daylight: 9.9h).

  • Average sunshine in May: 6.3h

Months with most sunshine are August, September, October and December (Average sunshine: 7.9h).
The month with least sunshine is June (Average sunshine: 5.9h).

Average UV index in May - Sydney, Australia
  • Average UV index in May: 3

Months with the highest UV index are January and December (UV index 12).
The month with the lowest UV index is June (UV index 2).