December weather forecast
Calcutta, Suriname

In December, Calcutta ready itself for the year-end festivities. The month experiences increased rainfall, reaching an average of 119mm (4.69"). The drop in temperatures awards the city with a refreshing break from the year-round heat, leading to an increase in outdoor activities. Despite the weather fluctuations, the city ensures to wrap the year in style with a sequence of celebrations and festive activities. Wind speeds remain constant, lending a nice, breezy atmosphere to make December visits a delightful experience.

Temperature

The ushering in of December brings an average high-temperature of a moderately hot 29.4°C (84.9°F), closely mirroring the 30.9°C (87.6°F) of November. An average nighttime temperature of 24.3°C (75.7°F) is noted during the month of December.

Heat index

Throughout December, the heat index is appraised at a sweltering 36°C (96.8°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Calcutta, the average relative humidity in December is 81%.

Rainfall

In Calcutta, in December, during 26.8 rainfall days, 119mm (4.69") of precipitation is typically accumulated. In Calcutta, during the entire year, the rain falls for 268.5 days and collects up to 1061mm (41.77") of precipitation.

Daylight

With an average of 11h and 48min of daylight, December has the shortest days of the year in Calcutta.
On the first day of December, sunrise is at 06:37 and sunset at 18:26. On the last day of the month, sunrise is at 06:52 and sunset at 18:39 -03.

Sunshine

The average sunshine in December is 7.7h.

UV index

January, April, May and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.