December weather forecast
San Cristóbal, Nicaragua

The first month of the winter, December, is a hot month in San Cristóbal, Nicaragua, with an average temperature fluctuating between 30.2°C (86.4°F) and 21.5°C (70.7°F).

Temperature

The advent of December signifies a minor shift to an average high-temperature of a tropical 30.2°C (86.4°F), aligning closely with November. San Cristóbal reports an average nighttime low-temperature of 21.5°C (70.7°F) in December.

Heat index

Throughout December, the heat index is appraised at a sweltering 36°C (96.8°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in December in San Cristóbal is 73%.

Rainfall

In December, the rain falls for 9.4 days. Throughout December, 16mm (0.63") of precipitation is accumulated. In San Cristóbal, during the entire year, the rain falls for 203.8 days and collects up to 1319mm (51.93") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 24min of daylight.
On the first day of the month, sunrise is at 05:50 and sunset at 17:19. On the last day of December, sunrise is at 06:05 and sunset at 17:32 CST.

Sunshine

In San Cristóbal, the average sunshine in December is 8.7h.

UV index

January through September, November and December, with an average maximum UV index of 7, are months with the highest UV index in San Cristóbal. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 7 during December leads to these advisories:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.