December weather forecast
Cayastá, Argentina

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

Temperature

Cayastá marks the onset of December with an average high-temperature of a hot 31.7°C (89.1°F), a subtle shift from November's 29.2°C (84.6°F). In Cayastá, the average temperature during the nights of December marks a significant drop from the daily high, settling at an enjoyable 18.3°C (64.9°F).

Heat index

The heat index value for December is calculated to be a fiery hot 35°C (95°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Realize that the values for the heat index are set for shaded places and light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Cayastá, the average relative humidity in December is 56%.

Rainfall

In Cayastá, in December, during 9.6 rainfall days, 69mm (2.72") of precipitation is typically accumulated. Throughout the year, there are 105.9 rainfall days, and 576mm (22.68") of precipitation is accumulated.

Daylight

With an average of 14h and 6min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:48 and sunset at 19:50. On the last day of December, sunrise is at 05:59 and sunset at 20:08 -03.

Sunshine

The month with the most sunshine in Cayastá, Argentina, is December, 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 Cayastá, Argentina. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 7 transforms into these recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.