December weather forecastPort Willunga, Australia
December
Weather in December
December, the first month of the summer in Port Willunga, is still a pleasant month, with an average temperature varying between 16°C (60.8°F) and 22.9°C (73.2°F).Temperature
Port Willunga, Australia, records an average high-temperature of a still agreeable 22.9°C (73.2°F) in December, closely mirroring the climate of the previous month. December sees the temperature falling to a mean low of 16°C (60.8°F).Humidity
In December, the average relative humidity is 62%.Rainfall
In December, the rain falls for 10.3 days. Throughout December, 24mm (0.94") of precipitation is accumulated. In Port Willunga, during the entire year, the rain falls for 138.9 days and collects up to 363mm (14.29") of precipitation.Sea temperature
In December, the average sea temperature is 19.3°C (66.7°F).Note: Swimming in water that is 19.3°C (66.7°F) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the longest days is December, with an average of 14h and 30min of daylight.On the first day of the month, sunrise is at 5:54 am and sunset at 8:15 pm. On the last day of December, sunrise is at 6:04 am and sunset at 8:34 pm ACDT.
Sunshine
With an average of 10h of sunshine, December has the most sunshine of the year in Port Willunga.UV index
The months with the highest UV index in Port Willunga, Australia, are January and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 6 translates into these guidelines:
Fend off overexposure. Sun protection is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Port Willunga, Australia
- Average high temperature in December: 22.9°C
The warmest month (with the highest average high temperature) is January (24.9°C).
The month with the lowest average high temperature is July (14°C).
- Average low temperature in December: 16°C
The month with the highest average low temperature is February (17.7°C).
The coldest month (with the lowest average low temperature) is August (9.9°C).
Average pressure in December
Port Willunga, Australia
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is June (1021.7mbar).
The month with the lowest atmospheric pressure is January (1012.5mbar).
Average wind speed in December
Port Willunga, Australia
- Average wind speed in December: 15.2km/h
The windiest month (with the highest average wind speed) is August (17.7km/h).
The calmest month (with the lowest average wind speed) is April (13.8km/h).
Average humidity in December
Port Willunga, Australia
- Average humidity in December: 62%
The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (61%).
Average rainfall in December
Port Willunga, Australia
- Average rainfall in December: 24mm
The wettest month (with the highest rainfall) is August (47mm).
The driest month (with the least rainfall) is January (17mm).
Average rainfall days in December
Port Willunga, Australia
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (6.3 days).
Average sea temperature in December
Port Willunga, Australia
- Average sea temperature in December: 19.3°C
The best month for swimming (with the highest average sea temperature) is February (20.7°C).
The coldest month (with the lowest average sea temperature) is August (13.8°C).
Average daylight in December /
Average sunshine in December
Port Willunga, Australia
- Average daylight in December: 14h and 30min
The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).
- Average sunshine in December: 10h
The month with the most sunshine is December (Average sunshine: 10h).
The months with the least sunshine are May, July and August (Average sunshine: 7h).
Average sunshine days in December
Port Willunga, Australia
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in December
Port Willunga, Australia
- Average UV index in December: 6
The months with the highest UV index are January and December (UV index 6).
The month with the lowest UV index is July (UV index 3).
Average cloud cover in December
Port Willunga, Australia
- Average cloud cover in December: 26
The months with the most cloud cover are May and July (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 20).
Average visibility in December
Port Willunga, 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).
