December weather forecast
Paso de los Mellizos, Uruguay

December

Weather in December

December, the first month of the summer in Paso de los Mellizos, is a tropical month, with an average temperature varying between 16.7°C (62.1°F) and 30°C (86°F).

Temperature

A soft shift in the average high-temperature is noticeable in December, transitioning from a moderately hot 26.8°C (80.2°F) in November to a hot 30°C (86°F). Paso de los Mellizos encounters a significant temperature differential, with an average low-temperature of 16.7°C (62.1°F) during December nights.

Heat index

December's heat index is estimated at a tropical 34°C (93.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

In December, the average relative humidity is 64%.

Rainfall

In Paso de los Mellizos, during December, the rain falls for 10.6 days and regularly aggregates up to 70mm (2.76") of precipitation. In Paso de los Mellizos, during the entire year, the rain falls for 114.3 days and collects up to 728mm (28.66") of precipitation.

Daylight

The month with the longest days is December, with an average of 14h and 12min of daylight.
On the first day of the month, sunrise is at 05:33 and sunset at 19:41. On the last day of December, sunrise is at 05:44 and sunset at 19:59 -03.

Sunshine

With an average of 10.8h of sunshine, December has the most sunshine of the year.

UV index

The average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In December, an average UV index of 6 transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Frequently asked questions

How hot does it get in December?
An average high-temperature, in December, in Paso de los Mellizos, is 30°C (86°F) and the average low-temperature is 16.7°C (62.1°F). In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 34°C (93.2°F).
What is the average humidity in December?
The average relative humidity in December is 64%.
How many days does it rain in December?
In Paso de los Mellizos, during December, the rain falls for 10.6 days and regularly aggregates up to 70mm (2.76") of precipitation.
When are the longest days in Paso de los Mellizos?
The month with the longest days is December, with an average of 14h and 12min of daylight.
What is the average length of the day in December in Paso de los Mellizos?
In December, the average day length is 14h and 15min.
What time are sunrise and sunset in December in Paso de los Mellizos?
In December, on the first day of the month, sunrise is at 05:33 and sunset at 19:41. On the last day of the month, sunrise is at 05:44 and sunset at 19:59 -03.
What month has the most sunshine?
With an average of 10.8h of sunshine, December has the most sunshine of the year.
How many hours of sunshine does Paso de los Mellizos have in December?
In Paso de los Mellizos, the average sunshine duration in December is 10.8h.
What is the UV index reading in December?
In December, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
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
Paso de los Mellizos, Uruguay
  • Average high temperature in December: 30°C

The warmest month (with the highest average high temperature) is January (32.3°C).
The month with the lowest average high temperature is July (15.4°C).

  • Average low temperature in December: 16.7°C

The month with the highest average low temperature is January (19°C).
The coldest month (with the lowest average low temperature) is July (7.3°C).

Average pressure in December
Paso de los Mellizos, Uruguay
  • Average pressure in December: 1010.6mbar

The month with the highest atmospheric pressure is July (1019.3mbar).
The month with the lowest atmospheric pressure is December (1010.6mbar).

Average wind speed in December
Paso de los Mellizos, Uruguay
  • Average wind speed in December: 10.9km/h

The windiest month (with the highest average wind speed) is August (13.1km/h).
The calmest months (with the lowest average wind speed) are March and April (10.5km/h).

Average humidity in December
Paso de los Mellizos, Uruguay
  • Average humidity in December: 64%

The months with the highest relative humidity are May and June (83%).
The month with the lowest relative humidity is January (59%).

Average rainfall in December
Paso de los Mellizos, Uruguay
  • Average rainfall in December: 70mm

The wettest month (with the highest rainfall) is January (77mm).
The driest month (with the least rainfall) is July (44mm).

Average rainfall days in December
Paso de los Mellizos, Uruguay
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is October (11.7 days).
The months with the least rainy days are April and June (8 days).

Average daylight in December /
Average sunshine in December
Paso de los Mellizos, Uruguay
  • Average daylight in December: 14h and 1min

The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 0min).

  • Average sunshine in December: 10h and 5min

The month with the most sunshine is December (Average sunshine: 10h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 36min).

Average sunshine days in December
Paso de los Mellizos, Uruguay
  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is April (21 days).
The month with the least sunshine days is October (17 days).

Average UV index in December
Paso de los Mellizos, Uruguay
  • Average UV index in December: 6

The month with the highest UV index is January (UV index 7).
The month with the lowest UV index is July (UV index 3).

Average cloud cover in December
Paso de los Mellizos, Uruguay
  • Average cloud cover in December: 21

The month with the most cloud cover is May (Cloud cover 41).
The months with the least cloud cover are January and December (Cloud cover 21).

Average visibility in December
Paso de los Mellizos, Uruguay
  • Average visibility in December: 9km

The month with the highest visibility is January (10km).
The month with the lowest visibility is May (8km).

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