December weather forecastCeduna, Australia
December
Weather in December
December, the first month of the summer in Ceduna, is also a moderately hot month, with an average temperature ranging between min 18.4°C (65.1°F) and max 27.3°C (81.1°F).Temperature
Ceduna starts December with an average high-temperature of a still warm 27.3°C (81.1°F), a minor shift from November's 25.2°C (77.4°F). Nightly temperatures drop to an average low of 18.4°C (65.1°F) in December.Heat index
The average heat index in December is estimated at 28°C (82.4°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
December is the least humid month, with an average relative humidity of 53%.Rainfall
In Ceduna, during December, the rain falls for 6.2 days and regularly aggregates up to 14mm (0.55") of precipitation. In Ceduna, during the entire year, the rain falls for 103.6 days and collects up to 213mm (8.39") of precipitation.Sea temperature
In December, the average sea temperature in Ceduna is 19.2°C (66.6°F).Note: Swimming is not a pleasurable activity for the majority in water at 19.2°C (66.6°F). Breathing control gets harder as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the longest days in Ceduna is December, with an average of 14h and 12min of daylight.On the first day of December, sunrise is at 6:21 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 8:44 pm ACDT.
Sunshine
The average sunshine in December in Ceduna is 9.2h.UV index
December is the month with the highest UV index, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the UV index of 7 transforms into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ceduna, Australia
- Average high temperature in December: 27.3°C
The warmest month (with the highest average high temperature) is January (28.7°C).
The month with the lowest average high temperature is July (16.8°C).
- Average low temperature in December: 18.4°C
The month with the highest average low temperature is January (19.5°C).
The coldest month (with the lowest average low temperature) is August (11.1°C).
Average pressure in December
Ceduna, Australia
- Average pressure in December: 1012.9mbar
The month with the highest atmospheric pressure is June (1022.6mbar).
The month with the lowest atmospheric pressure is January (1012.1mbar).
Average wind speed in December
Ceduna, Australia
- Average wind speed in December: 20.9km/h
The windiest month (with the highest average wind speed) is January (21.4km/h).
The calmest month (with the lowest average wind speed) is April (16.8km/h).
Average humidity in December
Ceduna, Australia
- Average humidity in December: 53%
The months with the highest relative humidity are June, July and August (63%).
The month with the lowest relative humidity is December (53%).
Average rainfall in December
Ceduna, Australia
- Average rainfall in December: 14mm
The wettest months (with the highest rainfall) are August and November (24mm).
The driest month (with the least rainfall) is September (12mm).
Average rainfall days in December
Ceduna, Australia
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is February (5.2 days).
Average sea temperature in December
Ceduna, Australia
- Average sea temperature in December: 19.2°C
The best month for swimming (with the highest average sea temperature) is January (19.8°C).
The coldest month (with the lowest average sea temperature) is August (15.8°C).
Average daylight in December /
Average sunshine in December
Ceduna, 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: 9h and 12min
The month with the most sunshine is February (Average sunshine: 9h and 18min).
The months with the least sunshine are May and June (Average sunshine: 8h and 0min).
Average sunshine days in December
Ceduna, Australia
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in December
Ceduna, Australia
- Average UV index in December: 7
The month with the highest UV index is December (UV index 7).
The months with the lowest UV index are May, June, July and August (UV index 4).
Average cloud cover in December
Ceduna, Australia
- Average cloud cover in December: 20
The months with the most cloud cover are May, June and July (Cloud cover 31).
The month with the least cloud cover is February (Cloud cover 18).
Average visibility in December
Ceduna, 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).
