December weather forecastRathmines, Australia
December
Weather in December
December, the first month of the summer in Rathmines, is also a moderately hot month, with an average temperature ranging between min 18.7°C (65.7°F) and max 25.3°C (77.5°F).Temperature
December reports an average high-temperature of a still moderately hot 25.3°C (77.5°F), slightly varied from November's 23.7°C (74.7°F). Rathmines's temperature in December lowers to a consistent average of 18.7°C (65.7°F) during the nights.Humidity
In Rathmines, Australia, the average relative humidity in December is 74%.Rainfall
In Rathmines, Australia, during December, the rain falls for 14 days and regularly aggregates up to 40mm (1.57") of precipitation. Throughout the year, there are 160.9 rainfall days, and 620mm (24.41") of precipitation is accumulated.Sea temperature
In Rathmines, the average seawater temperature in December is 22.3°C (72.1°F).Note: When considering a person's aversion to cold, factors like sunshine, wind, and atmospheric temperature are key. Swimming in 22.3°C (72.1°F) might be delightful. (Remember: The Olympics' swimming events have water temperatures between 25°C (77°F) and 28°C (82.4°F).)
Daylight
December has the longest days of the year in Rathmines, with an average of 14h and 18min of daylight.On the first day of the month, sunrise is at 5:37 am and sunset at 7:47 pm. On the last day of December, sunrise is at 5:47 am and sunset at 8:05 pm AEDT.
Sunshine
November and December, with an average of 9.8h of sunshine, are months with the most sunshine in Rathmines.UV index
January, February, November and December, with an average maximum UV index of 6, are months with the highest UV index in Rathmines, Australia. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 6 during December translates into the following guidance:
Inhibit overexposure. Warding off sun damage is of utmost importance. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Watch out! Reflections from sand and water can surge UV radiation exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rathmines, Australia
- Average high temperature in December: 25.3°C
The warmest month (with the highest average high temperature) is January (26.7°C).
The month with the lowest average high temperature is July (16.3°C).
- Average low temperature in December: 18.7°C
The month with the highest average low temperature is January (20.3°C).
The coldest month (with the lowest average low temperature) is August (10.8°C).
Average pressure in December
Rathmines, Australia
- Average pressure in December: 1013.4mbar
The month with the highest atmospheric pressure is June (1020.9mbar).
The month with the lowest atmospheric pressure is January (1012.8mbar).
Average wind speed in December
Rathmines, Australia
- Average wind speed in December: 15.8km/h
The windiest month (with the highest average wind speed) is August (16.7km/h).
The calmest month (with the lowest average wind speed) is April (14.1km/h).
Average humidity in December
Rathmines, Australia
- Average humidity in December: 74%
The month with the highest relative humidity is February (77%).
The months with the lowest relative humidity are August and September (69%).
Average rainfall in December
Rathmines, Australia
- Average rainfall in December: 40mm
The wettest month (with the highest rainfall) is February (79mm).
The driest month (with the least rainfall) is August (34mm).
Average rainfall days in December
Rathmines, Australia
- Average rainfall days in December: 14 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is August (10.2 days).
Average sea temperature in December
Rathmines, Australia
- Average sea temperature in December: 22.3°C
The best month for swimming (with the highest average sea temperature) is March (23.8°C).
The coldest months (with the lowest average sea temperature) are August and September (18.8°C).
Average daylight in December /
Average sunshine in December
Rathmines, 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: 9h and 48min
The months with the most sunshine are November and December (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in December
Rathmines, Australia
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is August (18.3 days).
The month with the least sunshine days is February (12.4 days).
Average UV index in December
Rathmines, 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
Rathmines, Australia
- Average cloud cover in December: 35
The month with the most cloud cover is February (Cloud cover 39).
The months with the least cloud cover are August and September (Cloud cover 24).
Average visibility in December
Rathmines, 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).
