December weather forecast
Isla Umbú, Paraguay

December, the first month of the summer in Isla Umbú, is still a tropical month, with an average temperature fluctuating between 32.8°C (91°F) and 21.3°C (70.3°F).

Temperature

The commencement of December brings an average high-temperature of a still tropical 32.8°C (91°F), marking an inconsequential divergence from November. During December, Isla Umbú observes a consistent average nighttime temperature of 21.3°C (70.3°F).

Heat index

Throughout December, the heat index is evaluated at a blisteringly hot 42°C (107.6°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in December in Isla Umbú is 67%.

Rainfall

In Isla Umbú, during December, the rain falls for 11.8 days and regularly aggregates up to 80mm (3.15") of precipitation. Throughout the year, there are 130.3 rainfall days, and 747mm (29.41") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 13h and 48min of daylight.
On the first day of December, sunrise is at 05:50 and sunset at 19:33. On the last day of the month, sunrise is at 06:02 and sunset at 19:50 -03.

Sunshine

December has the most sunshine of the year, with an average of 10.5h of sunshine.

UV index

The months with the highest UV index are January, February and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 7 in December transforms into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.