December weather forecast
Retiro, Argentina

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Weather in December

December, the first month of the summer in Retiro, is also a moderately hot month, with an average temperature ranging between max 27.3°C (81.1°F) and min 18.9°C (66°F).

Temperature

The beginning of December marks a minor shift in the average high-temperature, moving from November's 23.6°C (74.5°F) to a still warm 27.3°C (81.1°F). In December, the average low-temperature is an enjoyable 18.9°C (66°F).

Heat index

The heat index for December is estimated at 29°C (84.2°F). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

The average relative humidity in December is 61%.

Rainfall

In Retiro, in December, it is raining for 9.1 days, with typically 70mm (2.76") of accumulated precipitation. In Retiro, during the entire year, the rain falls for 100.8 days and collects up to 618mm (24.33") of precipitation.

Sea temperature

In Retiro, in December, the average water temperature is 22.6°C (72.7°F).
Note: When thinking about a swim in 22.6°C (72.7°F) waters, consider your cold tolerance, the day's sunshine, wind, and air temperature. It is a fun fact that Olympic swimmers dive into waters of 25°C (77°F) to 28°C (82.4°F).

Daylight

The month with the longest days is December, with an average of 14h and 24min of daylight.
On the first day of the month, sunrise is at 05:33 and sunset at 19:51. On the last day of December, 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 Retiro.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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Frequently asked questions

What are December temperatures in Retiro?

During December, Retiro experiences an average high-temperature of 27.3°C (81.1°F) and a low-temperature of 18.9°C (66°F). In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is estimated at 29°C (84.2°F).

What is the average humidity in December in Retiro?

In Retiro, the average relative humidity in December is 61%.

How much does it rain in Retiro in December?

In December, in Retiro, the rain falls for 9.1 days. Throughout December, 70mm (2.76") of precipitation is accumulated.

How warm is the water in December in Retiro?

In December, the average sea temperature in Retiro, Argentina, is 22.6°C (72.7°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 22.6°C (72.7°F).

When are the longest days in Retiro?

The month with the longest days in Retiro, Argentina, is December, with an average of 14h and 24min of daylight.

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

The average day length in December is 14h and 26min.

When is the sunrise / sunset in December in Retiro?

In December, on the first day of the month, sunrise is at 05:33 and sunset at 19:51. On the last day of the month, in Retiro, sunrise is at 05:43 and sunset at 20:09 -03.

What month has the most sunshine in Retiro?

December has the most sunshine of the year in Retiro, with an average of 11.2h of sunshine.

How many hours of sunshine does Retiro have in December?

In December, the average sunshine duration is 11.2h.

When is the highest UV index in Retiro?

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Retiro, Argentina.

How high is the UV index in December in Retiro?

In Retiro, Argentina, the average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in December
Retiro, Argentina

Average temperature in December - Retiro, Argentina
  • Average high temperature in December: 27.3°C

The warmest month (with the highest average high temperature) is January (29°C).
The month with the lowest average high temperature is July (13.4°C).

  • Average low temperature in December: 18.9°C

The month with the highest average low temperature is January (20.9°C).
The coldest month (with the lowest average low temperature) is July (8.9°C).

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Average pressure in December
Retiro, Argentina

Average pressure in December - Retiro, Argentina
  • Average pressure in December: 1011mbar

The month with the highest atmospheric pressure is July (1019.1mbar).
The month with the lowest atmospheric pressure is December (1011mbar).

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Average wind speed in December
Retiro, Argentina

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

The windiest month (with the highest average wind speed) is September (18.1km/h).
The calmest month (with the lowest average wind speed) is December (15.4km/h).

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Average humidity in December
Retiro, Argentina

Average humidity in December - Retiro, Argentina
  • Average humidity in December: 61%

The months with the highest relative humidity are May and July (75%).
The month with the lowest relative humidity is January (60%).

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Average rainfall in December
Retiro, Argentina

Average rainfall in December - Retiro, Argentina
  • Average rainfall in December: 70mm

The wettest month (with the highest rainfall) is November (72mm).
The driest month (with the least rainfall) is September (37mm).

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Average rainfall days in December
Retiro, Argentina

Average rainfall days in December - Retiro, Argentina
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is April (9.3 days).
The month with the least rainy days is August (6.1 days).

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Average sea temperature in December
Retiro, Argentina

Average sea temperature in December - Retiro, Argentina
  • Average sea temperature in December: 22.6°C

The best month for swimming (with the highest average sea temperature) is January (25°C).
The coldest month (with the lowest average sea temperature) is July (11.9°C).

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

Average daylight in December / Average sunshine in December - Retiro, 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: 5h and 54min).

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Average sunshine days in December
Retiro, Argentina

Average sunshine days in December - Retiro, Argentina
  • Average sunshine days in December: 20.5 days

The month with the most sunshine days is August (23.9 days).
The month with the least sunshine days is February (18.2 days).

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Average UV index in December
Retiro, Argentina

Average UV index in December - Retiro, 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).

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Average cloud cover in December
Retiro, Argentina

Average cloud cover in December - Retiro, 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).

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Average visibility in December
Retiro, Argentina

Average visibility in December - Retiro, 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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Retiro, Argentina

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