December weather forecast
Sarandí, Argentina

December

Weather in December

The first month of the summer, December, is still a warm month in Sarandí, Argentina, with an average temperature varying between 27.4°C (81.3°F) and 18.5°C (65.3°F).

Temperature

The embrace of December brings a minor uplift in the average high-temperature, shifting from 23.6°C (74.5°F) in November to a still warm 27.4°C (81.3°F). Throughout the month of December, the nighttime temperature in Sarandí dips to an average of 18.5°C (65.3°F).

Heat index

For most parts of December, the heat index is appraised at 29°C (84.2°F). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

In December, the average relative humidity is 61%.

Rainfall

In Sarandí, during December, the rain falls for 7.2 days and regularly aggregates up to 21mm (0.83") of precipitation. In Sarandí, Argentina, during the entire year, the rain falls for 83.4 days and collects up to 197mm (7.76") of precipitation.

Daylight

The month with the longest days in Sarandí is December, with an average of 14h and 24min of daylight.
On the first day of December in Sarandí, Argentina, sunrise is at 05:33 and sunset at 19:52. On the last day of the month, sunrise is at 05:43 and sunset at 20:09 -03.

Sunshine

With an average of 11.2h of sunshine, December has the most sunshine of the year in Sarandí.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

What are December temperatures in Sarandí?
Sarandí in December has an average high-temperature of 27.4°C (81.3°F) and an average low-temperature of 18.5°C (65.3°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in December is appraised at 29°C (84.2°F).
What is the average humidity in December in Sarandí?
In Sarandí, the average relative humidity in December is 61%.
How many days does it rain in December in Sarandí?
In Sarandí, Argentina, during December, the rain falls for 7.2 days and regularly aggregates up to 21mm (0.83") of precipitation.
When are the longest days in Sarandí?
With an average of 14h and 24min of daylight, December has the longest days of the year in Sarandí, Argentina.
What is the average length of the day in December in Sarandí?
In Sarandí, the average day length in December is 14h and 26min.
What time are sunrise and sunset in December in Sarandí?
On the first day of December in Sarandí, Argentina, sunrise is at 05:33 and sunset at 19:52. On the last day of the month, sunrise is at 05:43 and sunset at 20:09 -03.
What month has the most sunshine in Sarandí?
With an average of 11.2h of sunshine, December has the most sunshine of the year.
How long on average sun shines in December in Sarandí?
In December, the average sunshine duration in Sarandí, Argentina, is 11.2h.
What is the month with the highest UV index in Sarandí?
January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Sarandí, Argentina.
How high is the UV index in December in Sarandí?
In Sarandí, Argentina, the average daily maximum UV index in December 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
Sarandí, Argentina
  • Average high temperature in December: 27.4°C

The warmest month (with the highest average high temperature) is January (29°C).
The month with the lowest average high temperature is July (13.3°C).

  • Average low temperature in December: 18.5°C

The month with the highest average low temperature is January (20.7°C).
The coldest month (with the lowest average low temperature) is July (8.4°C).

Average pressure in December
Sarandí, Argentina
  • Average pressure in December: 1011.1mbar

The month with the highest atmospheric pressure is July (1019.1mbar).
The month with the lowest atmospheric pressure is December (1011.1mbar).

Average wind speed in December
Sarandí, Argentina
  • Average wind speed in December: 15.4km/h

The windiest month (with the highest average wind speed) is September (17.9km/h).
The calmest month (with the lowest average wind speed) is March (15.2km/h).

Average humidity in December
Sarandí, Argentina
  • Average humidity in December: 61%

The months with the highest relative humidity are May and July (76%).
The month with the lowest relative humidity is January (60%).

Average rainfall in December
Sarandí, Argentina
  • Average rainfall in December: 21mm

The wettest month (with the highest rainfall) is October (26mm).
The driest month (with the least rainfall) is May (9mm).

Average rainfall days in December
Sarandí, Argentina
  • Average rainfall days in December: 7.2 days

The months with the highest number of rainy days are March and April (8.2 days).
The month with the least rainy days is August (5.8 days).

Average daylight in December /
Average sunshine in December
Sarandí, Argentina
  • 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: 11h and 1min

The month with the most sunshine is December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).

Average sunshine days in December
Sarandí, Argentina
  • Average sunshine days in December: 21.4 days

The month with the most sunshine days is August (23.1 days).
The month with the least sunshine days is February (19.5 days).

Average UV index in December
Sarandí, Argentina
  • Average UV index in December: 6

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

Average cloud cover in December
Sarandí, Argentina
  • Average cloud cover in December: 18

The month with the most cloud cover is July (Cloud cover 37).
The month with the least cloud cover is January (Cloud cover 16).

Average visibility in December
Sarandí, Argentina
  • 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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