January weather forecast and climate
Cottesloe, Australia

January, the same as December, is a moderately hot summer month in Cottesloe, Australia, with temperature in the range of an average high of 27.5°C (81.5°F) and an average low of 19.5°C (67.1°F).

Temperature

In January, the average high-temperature is practically the same as in December - a still moderately hot 27.5°C (81.5°F). In Cottesloe, the average low-temperature is 19.5°C (67.1°F).

Heat index

The average heat index in January is evaluated at 28.6°C (83.5°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, metabolic differences, clothing), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

Months with the lowest humidity in Cottesloe, Australia, are January, February and December, with an average relative humidity of 59%.

Rainfall

In January, in Cottesloe, Australia, the rain falls for 5.4 days. Throughout January, 14mm (0.55") of precipitation is accumulated. Throughout the year, in Cottesloe, Australia, there are 114 rainfall days, and 404mm (15.91") of precipitation is accumulated.

Sea temperature

In Cottesloe, the average seawater temperature is 21.8°C (71.2°F).
Note: For most, swimming in 21.8°C (71.2°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In January, the average length of the day in Cottesloe is 14h.

Sunshine

Months with the most sunshine are January and December, with an average of 11.6h of sunshine.

UV index

Months with the highest UV index in Cottesloe are January through March and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in January in Cottesloe?

In Cottesloe, in January, the average high-temperature is 27.5°C (81.5°F), and the average low-temperature is 19.5°C (67.1°F). In January, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, is calculated to 28.6°C (83.5°F).

What are the least humid months in Cottesloe?

January, February and December, with an average relative humidity of 59%, are the least humid months in Cottesloe, Australia.

What is the average humidity in January in Cottesloe?

The average relative humidity in January in Cottesloe is 59%.

How much does it rain in Cottesloe in January?

In January, in Cottesloe, the rain falls for 5.4 days. Throughout January, 14mm (0.55") of precipitation is accumulated.

What is the sea water temperature in January in Cottesloe?

In January, the average sea temperature is 21.8°C (71.2°F). For swimming, a surface water temperature of 21.8°C (71.2°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).

How many hours of daylight does Cottesloe have in January?

The average length of the day in January in Cottesloe is 14h.

What is the month with the most sunshine in Cottesloe?

Months with the most sunshine in Cottesloe, Australia, are January and December, with an average of 11.6h of sunshine.

How many hours of sunshine does Cottesloe have in January?

In Cottesloe, the average sunshine in January is 11.6h.

What is the month with the highest UV index in Cottesloe?

January through March and December, with an average maximum UV index of 6, are months with the highest UV index in Cottesloe.

What is the UV index reading in January in Cottesloe?

In January, the average daily maximum UV index in Cottesloe, Australia, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in January - Cottesloe, Australia
  • Average high temperature in January: 27.5°C

The warmest month (with the highest average high temperature) is February (27.7°C).
The month with the lowest average high temperature is July (17.2°C).

  • Average low temperature in January: 19.5°C

The month with the highest average low temperature is February (19.8°C).
The coldest months (with the lowest average low temperature) are July and August (12.2°C).

Average pressure in January - Cottesloe, Australia
  • Average pressure in January: 1011.5mbar

The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is January (1011.5mbar).

Average wind speed in January - Cottesloe, Australia
  • Average wind speed in January: 19.7km/h

The windiest month (with the highest average wind speed) is January (19.7km/h).
The calmest month (with the lowest average wind speed) is April (16.2km/h).

Average humidity in January - Cottesloe, Australia
  • Average humidity in January: 59%

The month with the highest relative humidity is August (72%).
Months with the lowest relative humidity are January, February and December (59%).

Average rainfall in January - Cottesloe, Australia
  • Average rainfall in January: 14mm

The wettest month (with the highest rainfall) is June (75mm).
The driest month (with the least rainfall) is March (11mm).

Average rainfall days in January - Cottesloe, Australia
  • Average rainfall days in January: 5.4 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is February (4.3 days).

Average sea temperature in January - Cottesloe, Australia
  • Average sea temperature in January: 21.8°C

The best month for swimming (with the highest average sea temperature) is March (23.3°C).
The coldest month (with the lowest average sea temperature) is September (18.7°C).

Average daylight in January / Average sunshine in January - Cottesloe, Australia
  • Average daylight in January: 14h

The month with the longest days is December (Average daylight: 14.2h).
The month with the shortest days is June (Average daylight: 10.1h).

  • Average sunshine in January: 11.6h

Months with the most sunshine are January and December (Average sunshine: 11.6h).
The month with the least sunshine is August (Average sunshine: 5.7h).

Average sunshine days in January - Cottesloe, Australia
  • Average sunshine days in January: 24 days

The month with the most sunshine days is December (24.2 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in January - Cottesloe, Australia
  • Average UV index in January: 6

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

Average visibility in January - Cottesloe, Australia
  • Average visibility in January: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).