December weather forecast
Montero, Bolivia

December brings cooler temperatures to Montero while maintaining the increased rainfall trend instigated in November. The highest rainfall levels of the year are recorded at 141mm (5.55"), seen on an average of 22.7 days. Montero concludes the year with relatively long daylight hours amounting to 13.2 hours and a respectable 8.7 sunshine hours. This period maintains a high relative humidity of 77%, reminiscent of January's climatic conditions.

Temperature

With the onset of December in Montero, the average high-temperature registers at a still tropical 30.7°C (87.3°F), subtly different from November's 31.9°C (89.4°F). December in Montero is noted for a mean low-temperature of 21.9°C (71.4°F).

Heat index

During December, the heat index is calculated to be a fiery hot 39°C (102.2°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in December in Montero, Bolivia, is 77%.

Rainfall

The month with the most rainfall is December, when the rain falls for 22.7 days and typically aggregates up to 141mm (5.55") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 6min of daylight.
On the first day of December, sunrise is at 05:29 and sunset at 18:35. On the last day of the month, sunrise is at 05:41 and sunset at 18:50 -04.

Sunshine

The average sunshine in December is 8.7h.

UV index

The average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 6 during December leads to these advisories:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.