December weather forecast
Santa Fe, Argentina

December witnesses a peak in summer heat in Santa Fe, Argentina. With an average high temperature of a sizzling 31.7°C (89.1°F) and a corresponding low temperature of 18.3°C (64.9°F), the fabric of the city thrives on a distinct energetic rhythm. A noticeable increase in daylight hours and high UV index make for sunny and warm afternoons. Despite the heat, outdoor activities flourish in the welcoming sunshine. Revellings and Christmas festivities ensure a cheery atmosphere, making December an exuberant time to visit Santa Fe.

Temperature

December notes an average high-temperature of a tropical 31.7°C (89.1°F), subtly differing from November's 29.2°C (84.6°F). A noteworthy thermal contrast characterizes Santa Fe's December nights, with temperatures averaging at an enjoyable 18.3°C (64.9°F).

Heat index

For December, the heat index is evaluated at a very hot 35°C (95°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

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

Rainfall

In December, in Santa Fe, the rain falls for 9.6 days. Throughout December, 69mm (2.72") of precipitation is accumulated. In Santa Fe, during the entire year, the rain falls for 105.9 days and collects up to 576mm (22.68") of precipitation.

Daylight

December has the longest days of the year in Santa Fe, with an average of 14h and 12min of daylight.
On the first day of December, sunrise is at 05:50 and sunset at 19:53. On the last day of the month, sunrise is at 06:00 and sunset at 20:11 -03.

Sunshine

December has the most sunshine of the year in Santa Fe, Argentina, 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, Argentina. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: During December, 7 as the daily maximum UV index converts into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.