December weather forecast
Canelones, Uruguay

December

Weather in December

December, the first month of the summer in Canelones, is a warm month, with an average temperature fluctuating between 17.8°C (64°F) and 25.6°C (78.1°F).

Temperature

December's arrival brings a slight change in high-temperatures, adjusting from an agreeable 22.3°C (72.1°F) in November to a warm 25.6°C (78.1°F). Throughout the month of December, the average temperature dips to an enjoyable 17.8°C (64°F) at night.

Humidity

In December, the average relative humidity is 67%.

Rainfall

In Canelones, in December, during 11.4 rainfall days, 60mm (2.36") of precipitation is typically accumulated. In Canelones, during the entire year, the rain falls for 131.6 days and collects up to 707mm (27.83") of precipitation.

Daylight

December has the longest days of the year, with an average of 14h and 24min of daylight.
On the first day of December, sunrise is at 05:25 and sunset at 19:43. On the last day of the month, sunrise is at 05:35 and sunset at 20:01 -03.

Sunshine

January and December, with an average of 10.9h of sunshine, are months with the most sunshine.

UV index

January through March and December, with an average maximum UV index of 6, are months with the highest UV index in Canelones. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index, 6 during December, leads to the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

What is the usual temperature for Canelones in December?
In December, the average high-temperature and low-temperature are 25.6°C (78.1°F) and 17.8°C (64°F) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in January is calculated to be 30°C (86°F).
What is the average humidity in December?
The average relative humidity in December is 67%.
How much does it rain in December?
In Canelones, in December, it is raining for 11.4 days, with typically 60mm (2.36") of accumulated precipitation.
When are the longest days?
The month with the longest days is December, with an average of 14h and 24min of daylight.
What is the average length of the day in December?
In Canelones, the average day length in December is 14h and 25min.
What time are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 05:25 and sunset at 19:43. On the last day of the month, sunrise is at 05:35 and sunset at 20:01 -03.
What are the months with the most sunshine?
January and December, with an average of 10.9h of sunshine, are months with the most sunshine.
How many hours of sunshine does Canelones have in December?
In December, the average sunshine duration is 10.9h.
What are the months with the highest UV index?
January through March and December, with an average maximum UV index of 6, are months with the highest UV index.
What is the UV index reading in December?
In Canelones, Uruguay, 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 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 - Canelones, Uruguay
Average temperature in December
Canelones, Uruguay
  • Average high temperature in December: 25.6°C

The warmest month (with the highest average high temperature) is January (27.8°C).
The month with the lowest average high temperature is July (13.3°C).

  • Average low temperature in December: 17.8°C

The month with the highest average low temperature is February (19.9°C).
The coldest month (with the lowest average low temperature) is July (8.7°C).

Average pressure in December - Canelones, Uruguay
Average pressure in December
Canelones, Uruguay
  • Average pressure in December: 1011.2mbar

The month with the highest atmospheric pressure is July (1018.9mbar).
The month with the lowest atmospheric pressure is December (1011.2mbar).

Average wind speed in December - Canelones, Uruguay
Average wind speed in December
Canelones, Uruguay
  • Average wind speed in December: 16.8km/h

The windiest month (with the highest average wind speed) is September (19.2km/h).
The calmest month (with the lowest average wind speed) is May (16.7km/h).

Average humidity in December - Canelones, Uruguay
Average humidity in December
Canelones, Uruguay
  • Average humidity in December: 67%

The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is January (64%).

Average rainfall in December - Canelones, Uruguay
Average rainfall in December
Canelones, Uruguay
  • Average rainfall in December: 60mm

The wettest months (with the highest rainfall) are July and November (68mm).
The driest month (with the least rainfall) is January (46mm).

Average rainfall days in December - Canelones, Uruguay
Average rainfall days in December
Canelones, Uruguay
  • Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is March (12.2 days).
The month with the least rainy days is January (9.4 days).

Average daylight in December / Average sunshine in December - Canelones, Uruguay
Average daylight in December /
Average sunshine in December
Canelones, Uruguay
  • Average daylight in December: 14h and 2min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

  • Average sunshine in December: 10h and 5min

The months with the most sunshine are January and December (Average sunshine: 10h and 54min).
The month with the least sunshine is July (Average sunshine: 5h and 42min).

Average sunshine days in December - Canelones, Uruguay
Average sunshine days in December
Canelones, Uruguay
  • Average sunshine days in December: 18 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is October (15.2 days).

Average UV index in December - Canelones, Uruguay
Average UV index in December
Canelones, Uruguay
  • Average UV index in December: 6

The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are May, July and August (UV index 3).

Average cloud cover in December - Canelones, Uruguay
Average cloud cover in December
Canelones, Uruguay
  • Average cloud cover in December: 21

The month with the most cloud cover is July (Cloud cover 40).
The month with the least cloud cover is January (Cloud cover 19).

Average visibility in December - Canelones, Uruguay
Average visibility in December
Canelones, Uruguay
  • 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).

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