December weather forecastCottesloe, Australia
December
Weather in December
December, the first month of the summer in Cottesloe, is also a moderately hot month, with an average temperature ranging between max 25.7°C (78.3°F) and min 17.9°C (64.2°F).Temperature
The advent of December sees the average high-temperature at a still warm 25.7°C (78.3°F), subtly shifted from November's 23.5°C (74.3°F). The low-temperature average for Cottesloe during December stands at a refreshing 17.9°C (64.2°F).Humidity
January, February and December, with an average relative humidity of 59%, are the least humid months in Cottesloe.Rainfall
In Cottesloe, in December, it is raining for 5.2 days, with typically 12mm (0.47") of accumulated precipitation. In Cottesloe, during the entire year, the rain falls for 114 days and collects up to 404mm (15.91") of precipitation.Sea temperature
In December, the average sea temperature in Cottesloe is 20.8°C (69.4°F).Note: For the majority, swimming in water with a temperature of 20.8°C (69.4°F) is not enjoyable. The difficulty in managing breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 14h and 12min of daylight, December has the longest days of the year in Cottesloe, Australia.On the first day of the month, sunrise is at 5:03 am and sunset at 7:08 pm. On the last day of December, in Cottesloe, sunrise is at 5:13 am and sunset at 7:26 pm AWST.
Sunshine
The months with the most sunshine are January and December, with an average of 11.6h of sunshine.UV index
The 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 of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 6 in December leads to these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cottesloe, Australia
- Average high temperature in December: 25.7°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 December: 17.9°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 December
Cottesloe, Australia
- Average pressure in December: 1012.6mbar
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 December
Cottesloe, Australia
- Average wind speed in December: 19.4km/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 December
Cottesloe, Australia
- Average humidity in December: 59%
The month with the highest relative humidity is August (72%).
The months with the lowest relative humidity are January, February and December (59%).
Average rainfall in December
Cottesloe, Australia
- Average rainfall in December: 12mm
The wettest month (with the highest rainfall) is June (75mm).
The driest month (with the least rainfall) is March (11mm).
Average rainfall days in December
Cottesloe, Australia
- Average rainfall days in December: 5.2 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 December
Cottesloe, Australia
- Average sea temperature in December: 20.8°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 December /
Average sunshine in December
Cottesloe, Australia
- Average daylight in December: 14h and 12min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).
- Average sunshine in December: 11h and 36min
The months with the most sunshine are January and December (Average sunshine: 11h and 36min).
The month with the least sunshine is August (Average sunshine: 5h and 42min).
Average sunshine days in December
Cottesloe, Australia
- Average sunshine days in December: 24.2 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 December
Cottesloe, Australia
- Average UV index in December: 6
The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 4).
Average cloud cover in December
Cottesloe, Australia
- Average cloud cover in December: 14
The month with the most cloud cover is July (Cloud cover 39).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in December
Cottesloe, Australia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
