December weather forecast
San Carlos, Chile

December marks the advent of summer in San Carlos, Chile as temperatures further ascend, and the sun becomes a regular companion during the majority of daytime hours. It is one of the warmest months of the year, and the weather favors ample outdoor activities without the threat of rain to dampen plans. Rainfall is at an annual low, with only 12mm (0.47") coming down over the whole of December. Increased wind speeds at 9.2km/h (5.7mph) and lesser cloud cover contribute to clearer skies during most of the month. As the year rounds off, San Carlos, Chile welcomes its residents and visitors to enjoy the lively festive season under the magnificence of the radiant sun.

Temperature

As December sets in San Carlos, the average high-temperature shows a slight increase, moving up from a warm 24.5°C (76.1°F) in November to a still moderately hot 28.3°C (82.9°F). Marked by a significant temperature drop from daytime highs, the average nighttime temperature in San Carlos lowers to a cool 11°C (51.8°F) throughout December.

Heat index

December's heat index is computed to be 29°C (84.2°F). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

The average relative humidity in December in San Carlos is 52%.

Rainfall

In December, the rain falls for 2.4 days. Throughout December, 12mm (0.47") of precipitation is accumulated. Throughout the year, there are 76.4 rainfall days, and 600mm (23.62") of precipitation is accumulated.

Daylight

The month with the longest days in San Carlos is December, with an average of 14h and 36min of daylight.
On the first day of the month, sunrise is at 06:23 and sunset at 20:51. On the last day of December, in San Carlos, sunrise is at 06:33 and sunset at 21:09 -03.

Sunshine

The average sunshine in December is 10.6h.

UV index

January, February and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.