December weather forecast
Culiacán Rosales, Mexico

The first month of the winter, December, is also a moderately hot month in Culiacán Rosales, Mexico, with an average temperature varying between 12.2°C (54°F) and 28.2°C (82.8°F).

Temperature

Culiacán Rosales records a mild change in average high-temperature during December, easing from a hot 31.5°C (88.7°F) in November to a moderately hot 28.2°C (82.8°F). Culiacán Rosales, in the heat of December, registers a significant plunge to a mean of 12.2°C (54°F) during the nights.

Heat index

For most parts of December, the heat index is evaluated at a tropical 31°C (87.8°F). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
Heat index determinations are made taking into account the shade and light air movements. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

In Culiacán Rosales, the average relative humidity in December is 72%.

Rainfall

In Culiacán Rosales, in December, during 2.2 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, in Culiacán Rosales, there are 53.3 rainfall days, and 667mm (26.26") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 36min of daylight.
On the first day of the month, sunrise is at 6:37 am and sunset at 5:20 pm. On the last day of December, sunrise is at 6:54 am and sunset at 5:31 pm MST.

Sunshine

December has the least sunshine of the year in Culiacán Rosales, Mexico, with an average of 5.9h of sunshine.

UV index

January and December, with an average maximum UV index of 5, are months with the lowest UV index in Culiacán Rosales. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 5 in December, converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.