December weather forecast
Umina, Australia

December

Weather in December

December, the first month of the summer in Umina, is still a warm month, with temperature in the range of an average low of 18.1°C (64.6°F) and an average high of 25.9°C (78.6°F).

Temperature

Umina observes an average high-temperature of a still warm 25.9°C (78.6°F) in December, barely different from 24.4°C (75.9°F) in November. Umina experiences an average low-temperature reading of 18.1°C (64.6°F) throughout December.

Humidity

In Umina, the average relative humidity in December is 73%.

Rainfall

In Umina, in December, it is raining for 13.6 days, with typically 39mm (1.54") of accumulated precipitation. Throughout the year, there are 156.9 rainfall days, and 628mm (24.72") of precipitation is accumulated.

Daylight

With an average of 14h and 18min of daylight, December has the longest days of the year in Umina.
On the first day of the month, sunrise is at 5:37 am and sunset at 7:50 pm. On the last day of December, sunrise is at 5:47 am and sunset at 8:08 pm AEDT.

Sunshine

In Umina, the average sunshine in December is 9.7h.

UV index

January, February, October through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. 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. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.

Frequently asked questions

What are December temperatures in Umina?
The high-temperature, in December, in Umina, is 25.9°C (78.6°F), while the low-temperature averages to 18.1°C (64.6°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in January is estimated at 29°C (84.2°F).
What is the average humidity in December?
The average relative humidity in December is 73%.
How many days does it rain in December?
In Umina, during December, the rain falls for 13.6 days and regularly aggregates up to 39mm (1.54") of precipitation.
When are the longest days in Umina?
The month with the longest days is December, with an average of 14h and 18min of daylight.
How many hours of daylight does Umina have in December?
The average day length in December is 14h and 20min.
When are sunrise and sunset in December?
On the first day of December, sunrise is at 5:37 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:08 pm AEDT.
How long on average sun shines in December in Umina?
In Umina, the average sunshine duration in December is 9.7h.
When is the highest UV index?
January, February, October through December, with an average maximum UV index of 6, are months with the highest UV index.
How high is the UV index in December?
In Umina, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Umina, Australia
Average temperature in December
Umina, Australia
  • Average high temperature in December: 25.9°C

The warmest month (with the highest average high temperature) is January (27°C).
The month with the lowest average high temperature is July (16.5°C).

  • Average low temperature in December: 18.1°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 - Umina, Australia
Average pressure in December
Umina, Australia
  • Average pressure in December: 1013.3mbar

The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.8mbar).

Average wind speed in December - Umina, Australia
Average wind speed in December
Umina, Australia
  • Average wind speed in December: 13.2km/h

The windiest month (with the highest average wind speed) is August (13.6km/h).
The calmest month (with the lowest average wind speed) is April (12km/h).

Average humidity in December - Umina, Australia
Average humidity in December
Umina, Australia
  • Average humidity in December: 73%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (67%).

Average rainfall in December - Umina, Australia
Average rainfall in December
Umina, Australia
  • Average rainfall in December: 39mm

The wettest month (with the highest rainfall) is February (100mm).
The driest month (with the least rainfall) is August (34mm).

Average rainfall days in December - Umina, Australia
Average rainfall days in December
Umina, Australia
  • Average rainfall days in December: 13.6 days

The month with the highest number of rainy days is March (16.5 days).
The month with the least rainy days is August (9.2 days).

Average daylight in December / Average sunshine in December - Umina, Australia
Average daylight in December /
Average sunshine in December
Umina, Australia
  • Average daylight in December: 14h and 2min

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 4min

The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).

Average sunshine days in December - Umina, Australia
Average sunshine days in December
Umina, Australia
  • Average sunshine days in December: 14.9 days

The month with the most sunshine days is August (20 days).
The month with the least sunshine days is February (10.6 days).

Average UV index in December - Umina, Australia
Average UV index in December
Umina, Australia
  • Average UV index in December: 6

The months with the highest UV index are January, February, October, November and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).

Average cloud cover in December - Umina, Australia
Average cloud cover in December
Umina, Australia
  • Average cloud cover in December: 36

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in December - Umina, Australia
Average visibility in December
Umina, Australia
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).

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