December weather forecast
Rosário do Sul, Brazil

The first month of the summer, December, is a tropical month in Rosário do Sul, Brazil, with temperature in the range of an average low of 18.1°C (64.6°F) and an average high of 30.3°C (86.5°F).

Temperature

Rosário do Sul marks the arrival of December with an average high-temperature of a tropical 30.3°C (86.5°F), hardly different from November's 27.7°C (81.9°F). Contrasted against daytime highs, Rosário do Sul records an average nighttime low of 18.1°C (64.6°F) in December.

Heat index

In December, the average heat index is estimated at a torrid 35°C (95°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

December is the least humid month in Rosário do Sul, with an average relative humidity of 67%.

Rainfall

In December, in Rosário do Sul, Brazil, the rain falls for 12.8 days. Throughout December, 91mm (3.58") of precipitation is accumulated. In Rosário do Sul, Brazil, during the entire year, the rain falls for 135.1 days and collects up to 930mm (36.61") of precipitation.

Daylight

The month with the longest days in Rosário do Sul is December, with an average of 14h and 6min of daylight.
On the first day of the month, sunrise is at 05:30 and sunset at 19:27. On the last day of December, in Rosário do Sul, sunrise is at 05:41 and sunset at 19:44 -03.

Sunshine

November and December, with an average of 8.8h of sunshine, are months with the most sunshine in Rosário do Sul.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Rosário do Sul, Brazil. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.