December weather forecastGrafton, Australia
December
Weather in December
December, the first month of the summer in Grafton, is still a warm month, with an average temperature ranging between max 28.3°C (82.9°F) and min 17.2°C (63°F).Temperature
Grafton signifies an average high-temperature of a still warm 28.3°C (82.9°F) in December, closely mirroring the 27.8°C (82°F) of November. During December, Grafton's temperature averages to a refreshing 17.2°C (63°F) at night.Heat index
December's mean heat index is estimated at a hot 32°C (89.6°F). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
In Grafton, the average relative humidity in December is 76%.Rainfall
In Grafton, during December, the rain falls for 19.5 days and regularly aggregates up to 82mm (3.23") of precipitation. In Grafton, during the entire year, the rain falls for 178.3 days and collects up to 680mm (26.77") of precipitation.Daylight
December has the longest days of the year, with an average of 14h and 0min of daylight.On the first day of December, sunrise is at 5:40 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 7:51 pm AEDT.
Sunshine
In December, the average sunshine in Grafton, Australia, is 9.3h.UV index
January, February, November and December, with an average maximum UV index of 6, are months with the highest UV index in Grafton. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily UV index of 6 turns into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grafton, Australia
- Average high temperature in December: 28.3°C
The warmest month (with the highest average high temperature) is January (29.2°C).
The month with the lowest average high temperature is June (18.3°C).
- Average low temperature in December: 17.2°C
The month with the highest average low temperature is January (18.4°C).
The coldest month (with the lowest average low temperature) is July (7.7°C).
Average pressure in December
Grafton, Australia
- Average pressure in December: 1013.7mbar
The month with the highest atmospheric pressure is July (1020.9mbar).
The month with the lowest atmospheric pressure is January (1013mbar).
Average wind speed in December
Grafton, Australia
- Average wind speed in December: 7km/h
The windiest month (with the highest average wind speed) is October (7.1km/h).
The calmest month (with the lowest average wind speed) is May (6.2km/h).
Average humidity in December
Grafton, Australia
- Average humidity in December: 76%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is September (69%).
Average rainfall in December
Grafton, Australia
- Average rainfall in December: 82mm
The wettest month (with the highest rainfall) is February (96mm).
The driest month (with the least rainfall) is July (20mm).
Average rainfall days in December
Grafton, Australia
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is March (21.5 days).
The month with the least rainy days is August (7.8 days).
Average daylight in December /
Average sunshine in December
Grafton, Australia
- Average daylight in December: 14h and 0min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in December: 9h and 18min
The month with the most sunshine is November (Average sunshine: 9h and 54min).
The month with the least sunshine is June (Average sunshine: 6h and 6min).
Average sunshine days in December
Grafton, Australia
- Average sunshine days in December: 9 days
The month with the most sunshine days is August (21.3 days).
The month with the least sunshine days is February (6.2 days).
Average UV index in December
Grafton, Australia
- Average UV index in December: 6
The months with the highest UV index are January, February, November and December (UV index 6).
The months with the lowest UV index are May, June, July and August (UV index 4).
Average cloud cover in December
Grafton, Australia
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Grafton, Australia
- Average visibility in December: 8km
The month with the highest visibility is September (9km).
The month with the lowest visibility is March (7km).
