December weather forecast
Nismes, Guyana

December, the first month of the winter in Nismes, is also a moderately hot month, with an average temperature ranging between max 29.9°C (85.8°F) and min 22.4°C (72.3°F).

Temperature

Entering December, Nismes's average high-temperature reads a warm 29.9°C (85.8°F), indicating a close resemblance to the previous month's climate. Nismes's temperature lowers to a mean of 22.4°C (72.3°F) during the nights in December.

Heat index

In December, the average heat index is evaluated at a very hot 39°C (102.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In December, the average relative humidity is 84%.

Rainfall

In Nismes, in December, during 29.1 rainfall days, 138mm (5.43") of precipitation is typically accumulated. In Nismes, during the entire year, the rain falls for 312.9 days and collects up to 1254mm (49.37") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 42min of daylight.
On the first day of December, sunrise is at 05:49 and sunset at 17:35. On the last day of the month, sunrise is at 06:04 and sunset at 17:48 -04.

Sunshine

In December, the average sunshine is 6.7h.

UV index

The months with the lowest UV index in Nismes are January, February, May, June and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 during December leads to these advisories:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Employ a wide-brim hat for potent defense against up to 50% of UV rays.