December weather forecast
Rafaela, Argentina

December, the first month of the summer in Rafaela, is a hot month, with an average temperature fluctuating between 32.5°C (90.5°F) and 18.3°C (64.9°F).

Temperature

The transition into December marks the average high-temperature at a hot 32.5°C (90.5°F), differing minimally from November's 29.7°C (85.5°F). A striking departure from daytime highs to an average low-temperature of 18.3°C (64.9°F) is witnessed in Rafaela, Argentina, during December.

Heat index

For most parts of December, the heat index is evaluated at a torrid 36°C (96.8°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In Rafaela, the average relative humidity in December is 54%.

Rainfall

In Rafaela, in December, it is raining for 8.7 days, with typically 48mm (1.89") of accumulated precipitation. Throughout the year, in Rafaela, there are 94 rainfall days, and 527mm (20.75") of precipitation is accumulated.

Daylight

The month with the longest days in Rafaela is December, with an average of 14h and 6min of daylight.
On the first day of December in Rafaela, sunrise is at 05:54 and sunset at 19:56. On the last day of the month, sunrise is at 06:04 and sunset at 20:13 -03.

Sunshine

The month with the most sunshine in Rafaela is December, with an average of 10.7h of sunshine.

UV index

January, February and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during December translates into these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.