December weather forecastGeraldton, Australia
December
Weather in December
December in Geraldton is characteristic of full-blown summer with soaring temperatures and minimal rain. With the maximum temperature hitting 28.1°C (82.6°F), Geraldton experiences an intense heat spell. The month records the least rainfall of the year at 10mm (0.39"), reflecting arid conditions. However, an extended daylight duration of 14 hours tops the year, complimenting the festive season with abundant sunshine. As the month culminates, one can anticipate a repetition of this cycle with a gradually cooling climate in the New Year.Temperature
Geraldton, Australia, notes an average high-temperature of a still warm 28.1°C (82.6°F) in December, displaying minor variation from November. Geraldton's average low-temperature for the month of December records at a pleasant 20.2°C (68.4°F).Heat index
For December, the heat index is appraised at 29°C (84.2°F). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. 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 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In December, the average relative humidity is 59%.Rainfall
In December, in Geraldton, the rain falls for 4.9 days. Throughout December, 10mm (0.39") of precipitation is accumulated. Throughout the year, there are 88.5 rainfall days, and 218mm (8.58") of precipitation is accumulated.Sea temperature
In December, the average sea temperature is 22°C (71.6°F).Note: For someone sensitive to cold, swimming in 22°C (71.6°F) waters can be invigorating, especially when considering elements like sunshine, wind, and current air temperature. (As a reference, Olympic swimming waters are kept between 25°C (77°F) and 28°C (82.4°F).)
Daylight
The month with the longest days in Geraldton is December, with an average of 13h and 54min of daylight.On the first day of December in Geraldton, sunrise is at 5:15 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 7:23 pm AWST.
Sunshine
In December, the average sunshine is 11.6h.UV index
The average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A typical high UV index of 6 in December suggests the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Attention! The reflection of both water and sand can increase the intensity of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Geraldton, Australia
- Average high temperature in December: 28.1°C
The warmest month (with the highest average high temperature) is February (30.5°C).
The month with the lowest average high temperature is July (18.8°C).
- Average low temperature in December: 20.2°C
The month with the highest average low temperature is February (23.2°C).
The coldest month (with the lowest average low temperature) is August (12.7°C).
Average pressure in December
Geraldton, Australia
- Average pressure in December: 1010.5mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is January (1008.9mbar).
Average wind speed in December
Geraldton, Australia
- Average wind speed in December: 23.5km/h
The windiest months (with the highest average wind speed) are January and December (23.5km/h).
The calmest month (with the lowest average wind speed) is July (17.9km/h).
Average humidity in December
Geraldton, Australia
- Average humidity in December: 59%
The month with the highest relative humidity is August (70%).
The months with the lowest relative humidity are March and May (56%).
Average rainfall in December
Geraldton, Australia
- Average rainfall in December: 10mm
The wettest month (with the highest rainfall) is June (43mm).
The driest month (with the least rainfall) is November (6mm).
Average rainfall days in December
Geraldton, Australia
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is July (12.6 days).
The months with the least rainy days are February and November (4.7 days).
Average sea temperature in December
Geraldton, Australia
- Average sea temperature in December: 22°C
The best months for swimming (with the highest average sea temperature) are March, April and May (24°C).
The coldest months (with the lowest average sea temperature) are September and October (20°C).
Average daylight in December /
Average sunshine in December
Geraldton, 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: 11h and 36min
The month with the most sunshine is January (Average sunshine: 11h and 48min).
The month with the least sunshine is July (Average sunshine: 6h and 30min).
Average sunshine days in December
Geraldton, Australia
- Average sunshine days in December: 23.6 days
The month with the most sunshine days is December (23.6 days).
The month with the least sunshine days is July (16.3 days).
Average UV index in December
Geraldton, Australia
- Average UV index in December: 6
The months with the highest UV index are January and February (UV index 7).
The month with the lowest UV index is August (UV index 4).
Average cloud cover in December
Geraldton, Australia
- Average cloud cover in December: 15
The month with the most cloud cover is July (Cloud cover 26).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in December
Geraldton, 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).
