December weather forecastSelva, Argentina

December

Weather in December

December, the first month of the summer in Selva, is still a hot month, with an average temperature fluctuating between 33.1°C (91.6°F) and 20°C (68°F).

Temperature

December's average high-temperature stands at a still hot 33.1°C (91.6°F), showing little deviation from November's 30.4°C (86.7°F). During December, Selva perceives a consistent contrast from the daytime highs, with an average low-temperature of 20°C (68°F).

Heat index

The heat index in December is evaluated at a sweltering 37°C (98.6°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in December is 53%.

Rainfall

In Selva, during December, the rain falls for 10.8 days and regularly aggregates up to 60mm (2.36") of precipitation. Throughout the year, there are 102.1 rainfall days, and 528mm (20.79") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 14h and 0min of daylight.
On the first day of the month, sunrise is at 05:59 and sunset at 19:55. On the last day of December, sunrise is at 06:10 and sunset at 20:12 -03.

Sunshine

With an average of 9.4h of sunshine, December has the most sunshine of the year in Selva.

UV index

The months with the highest UV index are January, February and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: In December, the maximum UV index of 7 suggests this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Updated: Aug 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December temperatures vary between a high-temperature of 33.1°C (91.6°F) and a low-temperature of 20°C (68°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in December is evaluated at 37°C (98.6°F).

The average relative humidity in December in Selva is 53%.

In Selva, in December, it is raining for 10.8 days, with typically 60mm (2.36") of accumulated precipitation.

With an average of 14h and 0min of daylight, December has the longest days of the year.

In Selva, the average day length in December is 14h and 1min.

On the first day of December, sunrise is at 05:59 and sunset at 19:55. On the last day of the month, sunrise is at 06:10 and sunset at 20:12 -03.

With an average of 9.4h of sunshine, December has the most sunshine of the year.

In December, the average sunshine duration is 9.4h.

January, February and December, with an average maximum UV index of 7, are months with the highest UV index.

The average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

30.4°C

33.1°C

34°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

17.8km/h

16.6km/h

15.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

18.8

19.4

19.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Selva, Argentina

Average high temperature in December: 33.1°C

The warmest month (with the highest average high temperature) is January (34°C).
The month with the lowest average high temperature is July (17.8°C).

Average low temperature in December: 20°C

The month with the highest average low temperature is January (21.8°C).
The coldest month (with the lowest average low temperature) is July (8.9°C).

Average pressure in December
Selva, Argentina

Average pressure in December: 1008.9mbar

The month with the highest atmospheric pressure is July (1018.7mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).

Average wind speed in December
Selva, Argentina

Average wind speed in December: 15.5km/h

The windiest month (with the highest average wind speed) is September (17.8km/h).
The calmest months (with the lowest average wind speed) are March and April (13.5km/h).

Average humidity in December
Selva, Argentina

Average humidity in December: 53%

The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is January (51%).

Average rainfall in December
Selva, Argentina

Average rainfall in December: 60mm

The wettest month (with the highest rainfall) is November (85mm).
The driest month (with the least rainfall) is August (13mm).

Average rainfall days in December
Selva, Argentina

Average rainfall days in December: 10.8 days

The months with the highest number of rainy days are January, February and December (10.8 days).
The month with the least rainy days is August (4.1 days).

Average daylight in December /
Average sunshine in December
Selva, Argentina

Average daylight in December: 14h and 0min

The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).

Average sunshine in December: 9h and 24min

The month with the most sunshine is December (Average sunshine: 9h and 24min).
The month with the least sunshine is May (Average sunshine: 7h and 12min).

Average sunshine days in December
Selva, Argentina

Average sunshine days in December: 19.4 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (16.1 days).

Average UV index in December
Selva, Argentina

Average UV index in December: 7

The months with the highest UV index are January, February and December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in December
Selva, Argentina

Average cloud cover in December: 22

The month with the most cloud cover is May (Cloud cover 38).
The months with the least cloud cover are January and August (Cloud cover 21).

Average visibility in December
Selva, Argentina

Average visibility in December: 10km

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