December weather forecast
Monte Caseros, Argentina

The first month of the summer, December, is a tropical month in Monte Caseros, Argentina, with an average temperature ranging between max 31.2°C (88.2°F) and min 18.7°C (65.7°F).

Temperature

December introduces a marginal temperature uplift, with average high-temperatures adjusting from November's warm 28.2°C (82.8°F) to a hot 31.2°C (88.2°F). The average low-temperature reading in December for Monte Caseros reflects a significant fall from the daytime highs, stabilizing at a comfortable 18.7°C (65.7°F).

Heat index

Throughout December, the heat index is estimated at a very hot 37°C (98.6°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The average relative humidity in December is 66%.

Rainfall

The month with the most rainfall is December, when the rain falls for 12.5 days and typically aggregates up to 110mm (4.33") of precipitation.

Daylight

December has the longest days of the year, with an average of 14h and 6min of daylight.
On the first day of the month, sunrise is at 05:41 and sunset at 19:38. On the last day of December, sunrise is at 05:51 and sunset at 19:55 -03.

Sunshine

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

UV index

January and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in December converts into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.