December weather forecast
Salto, Uruguay

Capping off the year in Salto, December defines the height of summer with its warm and humid conditions. Weather extremes mark the season, with temperatures soaring to a high of 86.4°F and registering a peak UV index of 12, signaling the zenith of climatic conditions. Notably, the increased daylight, staying for as long as 14.2 hours a day, demonstrates the summer solstice's impact. Vivacity fills the December air, accompanied by longer sunny days. While the month represents the year-end festivities, it also reminds residents to ready themselves for the cooler months ahead.

Temperature

Salto experiences a minor temperature shift with the start of December, with average high-temperatures moving from a moderately hot 80.4°F in November to a tropical 86.4°F. Salto's average low-temperature of 62.8°F in December reflects a significant disparity from the daytime highs.

Heat index

The heat index value during December is computed to be a hot 93.2°F. More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Salto, the average relative humidity in December is 64%.

Rainfall

In Salto, in December, during 5 rainfall days, 4.72" of precipitation is typically accumulated. Throughout the year, there are 60 rainfall days, and 52.13" of precipitation is accumulated.

Daylight

The month with the longest days in Salto is December, with an average of 14h and 12min of daylight.
On the first day of December, sunrise is at 05:39 and sunset at 19:42. On the last day of the month, sunrise is at 05:50 and sunset at 19:59 -03.

Sunshine

With an average of 9.3h of sunshine, December has the most sunshine of the year.

UV index

January, February and December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 12 in December leads to these guidelines:
Enforce all necessary safety measures, unprotected skin may suffer burns swiftly. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Even on a cloudy day, sunscreen with a minimum SPF of 30 should be used liberally and reapplied often, especially after a swim or outdoor activity.