December weather forecastKatanning, Australia
December
Weather in December
December, the first month of the summer in Katanning, is also a moderately hot month, with an average temperature fluctuating between 27.7°C (81.9°F) and 13.9°C (57°F).Temperature
December's arrival coincides with a marginal rise in the average high-temperature, moving from November's moderately hot 24.5°C (76.1°F) to a still warm 27.7°C (81.9°F). Katanning, after hot December days, encounters a marked drop to an average nighttime temperature of 13.9°C (57°F).Heat index
December's mean heat index is calculated to be 29°C (84.2°F). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.It is important to note that the heat index values are for shaded areas and light wind scenarios. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
January and December, with an average relative humidity of 55%, are the least humid months in Katanning, Australia.Rainfall
In Katanning, in December, it is raining for 6 days, with typically 15mm (0.59") of accumulated precipitation. In Katanning, during the entire year, the rain falls for 109.9 days and collects up to 243mm (9.57") of precipitation.Daylight
The month with the longest days is December, with an average of 14h and 18min of daylight.On the first day of the month, sunrise is at 4:52 am and sunset at 7:05 pm. On the last day of December, sunrise is at 5:02 am and sunset at 7:23 pm AWST.
Sunshine
In Katanning, the average sunshine in December is 10.8h.UV index
February and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 6 during December leads to these instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Katanning, Australia
- Average high temperature in December: 27.7°C
The warmest month (with the highest average high temperature) is January (29.5°C).
The month with the lowest average high temperature is July (14.3°C).
- Average low temperature in December: 13.9°C
The month with the highest average low temperature is February (15.5°C).
The coldest month (with the lowest average low temperature) is August (6°C).
Average pressure in December
Katanning, Australia
- Average pressure in December: 1013.9mbar
The month with the highest atmospheric pressure is June (1020.1mbar).
The month with the lowest atmospheric pressure is January (1013.1mbar).
Average wind speed in December
Katanning, Australia
- Average wind speed in December: 11.8km/h
The windiest months (with the highest average wind speed) are January and February (12.3km/h).
The calmest month (with the lowest average wind speed) is April (9.7km/h).
Average humidity in December
Katanning, Australia
- Average humidity in December: 55%
The months with the highest relative humidity are July and August (83%).
The months with the lowest relative humidity are January and December (55%).
Average rainfall in December
Katanning, Australia
- Average rainfall in December: 15mm
The wettest month (with the highest rainfall) is August (34mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in December
Katanning, Australia
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is August (14.2 days).
The month with the least rainy days is February (5.1 days).
Average daylight in December /
Average sunshine in December
Katanning, Australia
- Average daylight in December: 14h and 18min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in December: 10h and 48min
The month with the most sunshine is January (Average sunshine: 11h and 6min).
The month with the least sunshine is August (Average sunshine: 5h and 0min).
Average sunshine days in December
Katanning, Australia
- Average sunshine days in December: 22.7 days
The month with the most sunshine days is December (22.7 days).
The month with the least sunshine days is August (12.3 days).
Average UV index in December
Katanning, Australia
- Average UV index in December: 6
The months with the highest UV index are February and December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 3).
Average cloud cover in December
Katanning, Australia
- Average cloud cover in December: 25
The month with the most cloud cover is August (Cloud cover 53).
The month with the least cloud cover is January (Cloud cover 22).
Average visibility in December
Katanning, Australia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are July, August, September and October (8km).
