December weather forecast and climate
Unión, Paraguay

Weather in December

December, the first month of the summer, in Unión, is also a hot month, with average temperature varying between 31.8°C (89.2°F) and 21.1°C (70°F).

Temperature

In Unión, the average high-temperature is almost the same as in November - a still hot 31.8°C (89.2°F). The average low-temperature, in December, is 21.1°C (70°F).

Heat index

The average heat index is estimated at an extremely hot 42°C (107.6°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, wind, differences in body mass, height, and shape, and clothing affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in Unión is 76%.

Rainfall

In Unión, Paraguay, during December, the rain falls for 20.5 days and regularly aggregates up to 120mm (4.72") of precipitation. Throughout the year, there are 166 rainfall days, and 911mm (35.87") of precipitation is accumulated.

Daylight

With an average of 13.7h of daylight, December has the longest days of the year in Unión, Paraguay.

Sunshine

In Unión, the average sunshine is 10.3h.

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index in Unión, Paraguay. A UV Index value of 6 to 7 symbolizes a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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.
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FAQ

What is the temperature in December in Unión?

In Unión, in December, the average high-temperature is 31.8°C (89.2°F), and the average low-temperature is 21.1°C (70°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines air temperature and relative humidity, in December is calculated to 42°C (107.6°F).

What is the average humidity in December in Unión?

In December, the average relative humidity in Unión is 76%.

How much does it rain in Unión in December?

In Unión, during December, the rain falls for 20.5 days and regularly aggregates up to 120mm (4.72") of precipitation.

When are the longest days in Unión?

December has the longest days of the year in Unión, with an average of 13.7h of daylight.

What is the average length of the day in December in Unión?

In December, the average length of the day is 13.7h.

How long on average sun shines in December in Unión?

In December, the average sunshine in Unión, Paraguay, is 10.3h.

What are the months with the highest UV index in Unión?

Months with the highest UV index in Unión, Paraguay, are January and December, with an average maximum UV index of 7.

What is the UV index reading in December in Unión?

In Unión, Paraguay, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to the UV radiation.

Average temperature in December
Unión, Paraguay

Average temperature in December - Unión, Paraguay
  • Average high temperature in December: 31.8°C

The warmest month (with the highest average high temperature) is January (32.7°C).
The month with the lowest average high temperature is July (22°C).

  • Average low temperature in December: 21.1°C

The month with the highest average low temperature is January (22.1°C).
The coldest month (with the lowest average low temperature) is July (12.8°C).

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Average pressure in December
Unión, Paraguay

Average pressure in December - Unión, Paraguay
  • Average pressure in December: 1008.3mbar

The month with the highest atmospheric pressure is July (1017.5mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).

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Average wind speed in December
Unión, Paraguay

Average wind speed in December - Unión, Paraguay
  • Average wind speed in December: 8km/h

The windiest month (with the highest average wind speed) is August (10.1km/h).
The calmest months (with the lowest average wind speed) are February and March (7.2km/h).

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Average humidity in December
Unión, Paraguay

Average humidity in December - Unión, Paraguay
  • Average humidity in December: 76%

The month with the highest relative humidity is May (86%).
The month with the lowest relative humidity is September (71%).

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Average rainfall in December
Unión, Paraguay

Average rainfall in December - Unión, Paraguay
  • Average rainfall in December: 120mm

The wettest month (with the highest rainfall) is November (128mm).
The driest month (with the least rainfall) is August (22mm).

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Average rainfall days in December
Unión, Paraguay

Average rainfall days in December - Unión, Paraguay
  • Average rainfall days in December: 20.5 days

The month with the highest number of rainy days is December (20.5 days).
The month with the least rainy days is August (6 days).

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Average daylight in December /
Average sunshine in December
Unión, Paraguay

Average daylight in December / Average sunshine in December - Unión, Paraguay
  • Average daylight in December: 13.7h

The month with the longest days is December (Average daylight: 13.7h).
The month with the shortest days is June (Average daylight: 10.6h).

  • Average sunshine in December: 10.3h

The month with the most sunshine is November (Average sunshine: 10.5h).
The month with the least sunshine is June (Average sunshine: 6.7h).

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Average sunshine days in December
Unión, Paraguay

Average sunshine days in December - Unión, Paraguay
  • Average sunshine days in December: 8.5 days

The month with the most sunshine days is August (24.5 days).
The month with the least sunshine days is February (6.3 days).

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Average UV index in December
Unión, Paraguay

Average UV index in December - Unión, Paraguay
  • Average UV index in December: 7

Months with the highest UV index are January and December (UV index 7).
The month with the lowest UV index is May (UV index 4).

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Average cloud cover in December
Unión, Paraguay

Average cloud cover in December - Unión, Paraguay
  • Average cloud cover in December: 35

The month with the most cloud cover is May (Cloud cover 53).
Months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in December
Unión, Paraguay

Average visibility in December - Unión, Paraguay
  • Average visibility in December: 8km

Months with the highest visibility are August and September (9km).
The month with the lowest visibility is May (6km).

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