Mar del Plata
Argentina
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Mar del Plata, Argentina

The first month of the summer, December, is a warm month in Mar del Plata, Argentina, with average temperature fluctuating between 12.7°C (54.9°F) and 24.4°C (75.9°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a warm 24.4°C (75.9°F). The average low-temperature, is 12.7°C (54.9°F).

Humidity

Months with the lowest humidity in Mar del Plata are January and December, with an average relative humidity of 76%.

Rainfall

In Mar del Plata, during December, the rain falls for 10 days and regularly aggregates up to 104mm (4.1") of precipitation. In Mar del Plata, during the entire year, the rain falls for 107 days and collects up to 923.6mm (36.4") of precipitation.

Sea temperature

In December, the average sea temperature in Mar del Plata, Argentina, is 17.3°C (63.1°F).
Note: Swimming in 17.3°C (63.1°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

December has the longest days of the year in Mar del Plata, with an average of 14.8h of daylight.

Sunshine

In December, the average sunshine is 8.7h.

UV index

Months with the highest UV index in Mar del Plata are January and December, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. 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. 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 Mar del Plata?

In December, in Mar del Plata, Argentina, the average high-temperature is 24.4°C (75.9°F), and the average low-temperature is 12.7°C (54.9°F).

What is the least humid month in Mar del Plata?

January and December, with an average relative humidity of 76%, are the least humid months in Mar del Plata.

What is the average humidity in December in Mar del Plata?

The average relative humidity in December in Mar del Plata, Argentina, is 76%.

How much does it rain in Mar del Plata in December?

In December, in Mar del Plata, the rain falls for 10 days. Throughout December, 104mm (4.1") of precipitation is accumulated.

What is the sea water temperature in December in Mar del Plata?

In Mar del Plata, the average seawater temperature in December is 17.3°C (63.1°F). For most, swimming in 17.3°C (63.1°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

When are the longest days in Mar del Plata?

December has the longest days of the year in Mar del Plata, with an average of 14.8h of daylight.

What is the average length of the day in December in Mar del Plata?

In Mar del Plata, Argentina, the average length of the day in December is 14.8h.

How long on average sun shines in December in Mar del Plata?

In Mar del Plata, Argentina, the average sunshine in December is 8.7h.

What are the months with the highest UV index in Mar del Plata?

Months with the highest UV index in Mar del Plata, Argentina, are January and December, with an average maximum UV index of 12.

What is the UV index reading in December in Mar del Plata?

In December, the average daily maximum UV index is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in December - Mar del Plata, Argentina
  • Average high temperature in December: 24.4°C

The warmest month (with the highest average high temperature) is January (26.3°C).
The month with the lowest average high temperature is July (13.1°C).

  • Average low temperature in December: 12.7°C

The month with the highest average low temperature is January (14.3°C).
The coldest month (with the lowest average low temperature) is July (3.8°C).

Average humidity in December - Mar del Plata, Argentina
  • Average humidity in December: 76%

The month with the highest relative humidity is June (84%).
Months with the lowest relative humidity are January and December (76%).

Average rainfall in December - Mar del Plata, Argentina
  • Average rainfall in December: 104mm

The wettest month (with the highest rainfall) is March (107mm).
The driest month (with the lowest rainfall) is June (54.9mm).

Average rainfall days in December - Mar del Plata, Argentina
  • Average rainfall days in December: 10 days

Months with the highest number of rainy days are October, November and December (10 days).
The month with the lowest number of rainy days is September (7 days).

Average sea temperature in December - Mar del Plata, Argentina
  • Average sea temperature in December: 17.3°C

The best month for swimming (with the highest average sea temperature) is January (20.7°C).
The coldest month (with the lowest average sea temperature) is September (10.4°C).

Average daylight in December / Average sunshine in December - Mar del Plata, Argentina
  • Average daylight in December: 14.8h

The month with the longest days is December (Average daylight: 14.8h).
The month with shortest days is June (Average daylight: 9.6h).

  • Average sunshine in December: 8.7h

The month with most sunshine is January (Average sunshine: 9.3h).
The month with least sunshine is June (Average sunshine: 4h).

Average UV index in December - Mar del Plata, Argentina
  • Average UV index in December: 12

Months with the highest UV index are January and December (UV index 12).
Months with the lowest UV index are June and July (UV index 2).