December weather forecast
Dos Arroyos, Argentina

December, the first month of the summer in Dos Arroyos, is a hot month, with an average temperature varying between 19°C (66.2°F) and 30.3°C (86.5°F).

Temperature

The transition into December marks the average high-temperature at a tropical 30.3°C (86.5°F), differing minimally from November's 28.7°C (83.7°F). Throughout the December nights, Dos Arroyos encounters a low-temperature of 19°C (66.2°F).

Heat index

For most parts of December, the heat index is appraised at a very hot 37°C (98.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

December is the least humid month, with an average relative humidity of 76%.

Rainfall

In December, in Dos Arroyos, the rain falls for 17.5 days. Throughout December, 117mm (4.61") of precipitation is accumulated. In Dos Arroyos, during the entire year, the rain falls for 166.5 days and collects up to 1177mm (46.34") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 54min of daylight.
On the first day of December in Dos Arroyos, sunrise is at 05:37 and sunset at 19:23. On the last day of the month, sunrise is at 05:48 and sunset at 19:40 -03.

Sunshine

In December, the average sunshine is 9.9h.

UV index

January through March, October through 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 risk from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 6 in December translates into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.