December weather forecastGoonellabah, Australia
December
Weather in December
December, the first month of the summer in Goonellabah, is still a warm month, with temperature in the range of an average low of 18.6°C (65.5°F) and an average high of 27.6°C (81.7°F).Temperature
December records an average high-temperature of a still moderately hot 27.6°C (81.7°F), indicating a minor variation from the preceding month. During December, the average low-temperature in Goonellabah is a refreshing 18.6°C (65.5°F).Heat index
For December, the heat index is calculated to be a hot 31°C (87.8°F). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In Goonellabah, the average relative humidity in December is 77%.Rainfall
In Goonellabah, in December, it is raining for 19.5 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, there are 184.7 rainfall days, and 718mm (28.27") of precipitation is accumulated.Daylight
December has the longest days of the year in Goonellabah, with an average of 13h and 54min of daylight.On the first day of the month, sunrise is at 5:40 am and sunset at 7:31 pm. On the last day of December, sunrise is at 5:51 am and sunset at 7:48 pm AEDT.
Sunshine
In Goonellabah, the average sunshine in December is 9.4h.UV index
January, February, November and December, with an average maximum UV index of 6, are months with the highest UV index in Goonellabah, Australia. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a regular UV index of 6 translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Goonellabah, Australia
- Average high temperature in December: 27.6°C
The warmest month (with the highest average high temperature) is January (28.3°C).
The month with the lowest average high temperature is July (18.1°C).
- Average low temperature in December: 18.6°C
The month with the highest average low temperature is January (19.8°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).
Average pressure in December
Goonellabah, Australia
- Average pressure in December: 1013.6mbar
The month with the highest atmospheric pressure is July (1020.7mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in December
Goonellabah, Australia
- Average wind speed in December: 11.1km/h
The windiest month (with the highest average wind speed) is October (11.4km/h).
The calmest month (with the lowest average wind speed) is May (9.6km/h).
Average humidity in December
Goonellabah, Australia
- Average humidity in December: 77%
The month with the highest relative humidity is March (83%).
The months with the lowest relative humidity are August and September (71%).
Average rainfall in December
Goonellabah, Australia
- Average rainfall in December: 76mm
The wettest month (with the highest rainfall) is March (102mm).
The driest month (with the least rainfall) is September (22mm).
Average rainfall days in December
Goonellabah, Australia
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is March (22.7 days).
The month with the least rainy days is August (8.1 days).
Average daylight in December /
Average sunshine in December
Goonellabah, Australia
- Average daylight in December: 13h and 54min
The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in December: 9h and 24min
The month with the most sunshine is November (Average sunshine: 10h and 18min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in December
Goonellabah, Australia
- Average sunshine days in December: 9 days
The month with the most sunshine days is August (20.6 days).
The month with the least sunshine days is March (5.8 days).
Average UV index in December
Goonellabah, 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 and July (UV index 4).
Average cloud cover in December
Goonellabah, Australia
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Goonellabah, Australia
- Average visibility in December: 9km
The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, October, November and December (9km).
