December weather forecast
Madrid, Mexico

December, the first month of the winter in Madrid, is still a hot month, with temperature in the range of an average low of 19.9°C (67.8°F) and an average high of 30.2°C (86.4°F).

Temperature

The introduction of December sees an average high-temperature of a still hot 30.2°C (86.4°F), hardly deviating from November. During December, Madrid witnesses a consistent average low-temperature of 19.9°C (67.8°F).

Heat index

The heat index for December is evaluated at a torrid 35°C (95°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Remember that heat index calculations are made for conditions in the shade with light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Madrid, the average relative humidity in December is 67%.

Rainfall

In Madrid, during December, the rain falls for 2 days and regularly aggregates up to 5mm (0.2") of precipitation. In Madrid, during the entire year, the rain falls for 94.5 days and collects up to 429mm (16.89") of precipitation.

Daylight

With an average of 11h and 0min of daylight, December has the shortest days of the year in Madrid.
On the first day of the month, sunrise is at 7:12 am and sunset at 6:16 pm. On the last day of December, sunrise is at 7:28 am and sunset at 6:29 pm CST.

Sunshine

The months with the most sunshine are March, April and December, with an average of 9.9h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Madrid. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.