Posadas
Argentina
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Posadas, Argentina

December, the first month of the summer, in Posadas, is a tropical month, with average temperature ranging between max 31.7°C (89.1°F) and min 20°C (68°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a hot 31.7°C (89.1°F). The average low-temperature, in Posadas, is 20°C (68°F).

Heat index

In December, the average heat index is evaluated at an extremely hot 40.2°C (104.4°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, clothing). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

December is the least humid month, with an average relative humidity of 72%.

Rainfall

In Posadas, during 15.3 rainfall days, 91mm (3.58") of precipitation is typically accumulated. Throughout the year, in Posadas, Argentina, there are 152.6 rainfall days, and 981mm (38.62") of precipitation is accumulated.

Daylight

With an average of 13.9h of daylight, December has the longest days of the year.

Sunshine

In December, the average sunshine is 10.1h.

UV index

In December, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in December in Posadas?

The average high-temperature, in December, is 31.7°C (89.1°F), while the average low-temperature is 20°C (68°F). In December, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that factores the actual air temperature with the relative humidity, is appraised at 40.2°C (104.4°F).

What is the least humid month in Posadas?

The least humid month is December, with an average relative humidity of 72%.

What is the average humidity in December in Posadas?

The average relative humidity in December is 72%.

How many days does it rain in December in Posadas?

In Posadas, during December, the rain falls for 15.3 days and regularly aggregates up to 91mm (3.58") of precipitation.

When are the longest days in Posadas?

With an average of 13.9h of daylight, December has the longest days of the year in Posadas, Argentina.

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

The average length of the day in December is 13.9h.

How many hours of sunshine does Posadas have in December?

In December, the average sunshine in Posadas is 10.1h.

How high is the UV index in December in Posadas?

The average daily maximum UV index in December in Posadas, Argentina, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in December - Posadas, Argentina
  • Average high temperature in December: 31.7°C

The warmest month (with the highest average high temperature) is January (32.4°C).
The month with the lowest average high temperature is July (19.5°C).

  • Average low temperature in December: 20°C

Months with the highest average low temperature are January and February (20.8°C).
The coldest month (with the lowest average low temperature) is July (11°C).

Average humidity in December - Posadas, Argentina
  • Average humidity in December: 72%

The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is December (72%).

Average rainfall in December - Posadas, Argentina
  • Average rainfall in December: 91mm

The wettest month (with the highest rainfall) is October (117mm).
The driest month (with the lowest rainfall) is August (41mm).

Average rainfall days in December - Posadas, Argentina
  • Average rainfall days in December: 15.3 days

The month with the highest number of rainy days is January (16.1 days).
The month with the lowest number of rainy days is August (7.8 days).

Average daylight in December / Average sunshine in December - Posadas, Argentina
  • Average daylight in December: 13.9h

The month with the longest days is December (Average daylight: 13.9h).
The month with shortest days is June (Average daylight: 10.4h).

  • Average sunshine in December: 10.1h

The month with most sunshine is November (Average sunshine: 10.3h).
The month with least sunshine is June (Average sunshine: 5.3h).

Average UV index in December - Posadas, Argentina
  • Average UV index in December: 6

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