December weather forecast
San Juan Bautista, Paraguay

December concludes the year with quintessential summer temperatures, marking a more significant rise from the past month to 32.1°C (89.8°F). As the month is packed with festive holidays, the ideal weather caters to outdoor celebrations and parties. Be mindful of the sunshine, however, as the UV index peaks at 7, suggesting risk levels for skin damage. Unlike the preceding months, December sees an increase in wind speed, making it favorable for wind-based activities such as sailing or kite flying. In essence, December wraps up the year with a harmonious interplay of heat, citywide celebration, and the bracing Paraguayan winds.

Temperature

As November transitions into December, San Juan Bautista records an average high-temperature of a still tropical 32.1°C (89.8°F), showing a gentle shift from the preceding month. San Juan Bautista's December nights cool down to an average low-temperature of 21.1°C (70°F).

Heat index

In December, the average heat index is estimated at a scorching 41°C (105.8°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The average relative humidity in December in San Juan Bautista is 71%.

Rainfall

In San Juan Bautista, in December, it is raining for 12.5 days, with typically 77mm (3.03") of accumulated precipitation. In San Juan Bautista, during the entire year, the rain falls for 130.6 days and collects up to 683mm (26.89") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 48min of daylight.
On the first day of the month, sunrise is at 05:46 and sunset at 19:28. On the last day of December, in San Juan Bautista, sunrise is at 05:58 and sunset at 19:45 -03.

Sunshine

In San Juan Bautista, the average sunshine in December is 10.7h.

UV index

The months with the highest UV index in San Juan Bautista, Paraguay, are January, February and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 7 suggests these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.