December weather forecastKatoomba, Australia
December
Weather in December
The first month of the summer, December, is also a moderately hot month in Katoomba, Australia, with an average temperature fluctuating between 13.7°C (56.7°F) and 26.8°C (80.2°F).Temperature
December's average high-temperature stands at a still warm 26.8°C (80.2°F), showing little deviation from November's 24.5°C (76.1°F). Katoomba sees a consistent average low-temperature of 13.7°C (56.7°F) in December, indicating a substantial decrease from the day's temperature.Humidity
December is the least humid month, with an average relative humidity of 68%.Rainfall
In Katoomba, during December, the rain falls for 14.5 days and regularly aggregates up to 49mm (1.93") of precipitation. Throughout the year, in Katoomba, there are 157.9 rainfall days, and 569mm (22.4") of precipitation is accumulated.Daylight
The month with the longest days is December, with an average of 14h and 18min of daylight.On the first day of December, sunrise is at 5:41 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:12 pm AEDT.
Sunshine
November and December, with an average of 10.1h of sunshine, are months with the most sunshine in Katoomba.UV index
The months with the highest UV index are January and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: During December, 6 as the daily maximum UV index converts into the following advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Katoomba, Australia
- Average high temperature in December: 26.8°C
The warmest month (with the highest average high temperature) is January (28.6°C).
The months with the lowest average high temperature are June and July (13.7°C).
- Average low temperature in December: 13.7°C
The month with the highest average low temperature is January (15.4°C).
The coldest month (with the lowest average low temperature) is July (3.3°C).
Average pressure in December
Katoomba, Australia
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is June (1021.6mbar).
The month with the lowest atmospheric pressure is January (1012.7mbar).
Average wind speed in December
Katoomba, Australia
- Average wind speed in December: 6.9km/h
The windiest month (with the highest average wind speed) is August (8.6km/h).
The calmest months (with the lowest average wind speed) are March and April (6.3km/h).
Average humidity in December
Katoomba, Australia
- Average humidity in December: 68%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (68%).
Average rainfall in December
Katoomba, Australia
- Average rainfall in December: 49mm
The wettest month (with the highest rainfall) is February (109mm).
The driest month (with the least rainfall) is May (22mm).
Average rainfall days in December
Katoomba, Australia
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is March (17.7 days).
The months with the least rainy days are July and August (8.9 days).
Average daylight in December /
Average sunshine in December
Katoomba, 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: 10h and 6min
The months with the most sunshine are November and December (Average sunshine: 10h and 6min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in December
Katoomba, Australia
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is May (19 days).
The month with the least sunshine days is February (8.9 days).
Average UV index in December
Katoomba, Australia
- Average UV index in December: 6
The months with the highest UV index are January and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 3).
Average cloud cover in December
Katoomba, Australia
- Average cloud cover in December: 39
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Katoomba, Australia
- Average visibility in December: 8km
The months with the highest visibility are January, February, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are March and April (7km).
