Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Entering December, the average high-temperature is recorded at a still hot 33.7°C (92.7°F), exhibiting a minimal shift from November's 32.8°C (91°F). Throughout December, Karratha witnesses a nighttime temperature average of 27.7°C (81.9°F).Heat index
December's average heat index is estimated at a torrid 39°C (102.2°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In Karratha, the average relative humidity in December is 55%.Rainfall
In Karratha, in December, during 3.8 rainfall days, 15mm (0.59") of precipitation is typically accumulated. Throughout the year, there are 43.5 rainfall days, and 203mm (7.99") of precipitation is accumulated.Daylight
The month with the longest days is December, with an average of 13h and 24min of daylight.On the first day of December, sunrise is at 5:22 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 6:56 pm AWST.
Sunshine
In Karratha, the average sunshine in December is 11.9h.UV index
The months with the highest UV index in Karratha are February, March, October and December, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 8 during December translates into the following recommendations:
Immediate care is essential; skin and eyes can be harmed in no time without it. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
How hot is it in Karratha in December?
What is the average humidity in December in Karratha?
How much does it rain in Karratha in December?
When are the longest days in Karratha?
What is the average length of the day in December in Karratha?
When is the sunrise / sunset in December in Karratha?
How long on average sun shines in December in Karratha?
When is the highest UV index in Karratha?
How high is the UV index in December in Karratha?
Average temperature in December
Karratha, Australia
- Average high temperature in December: 33.7°C
The warmest month (with the highest average high temperature) is March (34.2°C).
The month with the lowest average high temperature is July (25.7°C).
- Average low temperature in December: 27.7°C
The month with the highest average low temperature is March (28.9°C).
The coldest month (with the lowest average low temperature) is July (19.8°C).
Average pressure in December
Karratha, Australia
- Average pressure in December: 1006.4mbar
The month with the highest atmospheric pressure is July (1016.9mbar).
The month with the lowest atmospheric pressure is January (1005mbar).
Average wind speed in December
Karratha, Australia
- Average wind speed in December: 21.2km/h
The windiest month (with the highest average wind speed) is November (21.8km/h).
The calmest month (with the lowest average wind speed) is April (17.1km/h).
Average humidity in December
Karratha, Australia
- Average humidity in December: 55%
The month with the highest relative humidity is January (62%).
The months with the lowest relative humidity are July, August, September and October (46%).
Average rainfall in December
Karratha, Australia
- Average rainfall in December: 15mm
The wettest month (with the highest rainfall) is February (67mm).
The driest months (with the least rainfall) are August, September and October (1mm).
Average rainfall days in December
Karratha, Australia
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is January (9.3 days).
The month with the least rainy days is October (0.5 days).
Average daylight in December /
Average sunshine in December
Karratha, Australia
- Average daylight in December: 13h and 2min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in December: 11h and 5min
The month with the most sunshine is November (Average sunshine: 12h and 18min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).
Average sunshine days in December
Karratha, Australia
- Average sunshine days in December: 25.6 days
The month with the most sunshine days is August (30 days).
The month with the least sunshine days is January (20.5 days).
Average UV index in December
Karratha, Australia
- Average UV index in December: 8
The months with the highest UV index are February, March, October and December (UV index 8).
The months with the lowest UV index are May, June, July and August (UV index 6).
Average cloud cover in December
Karratha, Australia
- Average cloud cover in December: 12
The month with the most cloud cover is January (Cloud cover 19).
The month with the least cloud cover is September (Cloud cover 3).
Average visibility in December
Karratha, 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).
Karratha, Australia
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