Santa Fe
Argentina
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Santa Fe, Argentina

The first month of the summer, December, is a tropical month in Santa Fe, Argentina, with average temperature varying between 18.3°C (64.9°F) and 31.7°C (89.1°F).

Temperature

In December, the average high-temperature is relatively the same as in November - a tropical 31.7°C (89.1°F). The average low-temperature, in Santa Fe, is 18.3°C (64.9°F).

Heat index

In December, the average heat index is estimated at a torrid 35.3°C (95.5°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like wind, pregnancy, clothing, and activity influence one's weather impression. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. 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

The average relative humidity in December is 56%.

Rainfall

In Santa Fe, during December, the rain falls for 9.6 days and regularly aggregates up to 69mm (2.72") of precipitation. Throughout the year, there are 105.9 rainfall days, and 576mm (22.68") of precipitation is accumulated.

Daylight

With an average of 14.2h of daylight, December has the longest days of the year in Santa Fe.

Sunshine

December has the most sunshine of the year in Santa Fe, with an average of 11.1h of sunshine.

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index in Santa Fe. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to the UV radiation for average individuals.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in December in Santa Fe?

In December, the average high-temperature is 31.7°C (89.1°F), and the average low-temperature is 18.3°C (64.9°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines relative humidity and air temperature, in December is evaluated at 35.3°C (95.5°F).

What is the average humidity in December in Santa Fe?

In December, the average relative humidity in Santa Fe, Argentina, is 56%.

How many days does it rain in December in Santa Fe?

In Santa Fe, during December, the rain falls for 9.6 days and regularly aggregates up to 69mm (2.72") of precipitation.

When are the longest days in Santa Fe?

With an average of 14.2h of daylight, December has the longest days of the year.

How many hours of daylight does Santa Fe have in December?

The average length of the day in December in Santa Fe is 14.2h.

What month has the most sunshine in Santa Fe?

With an average of 11.1h of sunshine, December has the most sunshine of the year in Santa Fe, Argentina.

How many hours of sunshine does Santa Fe have in December?

In Santa Fe, the average sunshine in December is 11.1h.

What is the month with the highest UV index in Santa Fe?

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

How high is the UV index in December in Santa Fe?

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

The warmest month (with the highest average high temperature) is January (33.5°C).
The month with the lowest average high temperature is July (16.6°C).

  • Average low temperature in December: 18.3°C

The month with the highest average low temperature is January (20.5°C).
The coldest month (with the lowest average low temperature) is July (8.3°C).

Average humidity in December - Santa Fe, Argentina
  • Average humidity in December: 56%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is January (51%).

Average rainfall in December - Santa Fe, Argentina
  • Average rainfall in December: 69mm

The wettest month (with the highest rainfall) is November (82mm).
The driest month (with the lowest rainfall) is June (24mm).

Average rainfall days in December - Santa Fe, Argentina
  • Average rainfall days in December: 9.6 days

The month with the highest number of rainy days is October (10.9 days).
The month with the lowest number of rainy days is July (6.9 days).

Average daylight in December / Average sunshine in December - Santa Fe, Argentina
  • Average daylight in December: 14.2h

The month with the longest days is December (Average daylight: 14.2h).
The month with shortest days is June (Average daylight: 10.1h).

  • Average sunshine in December: 11.1h

The month with most sunshine is December (Average sunshine: 11.1h).
The month with least sunshine is May (Average sunshine: 7.3h).

Average UV index in December - Santa Fe, Argentina
  • Average UV index in December: 7

Months with the highest UV index are January and December (UV index 7).
Months with the lowest UV index are May, June, July and August (UV index 4).