December weather forecast
Lancaster, Guyana

December, the first month of the winter in Lancaster, is also a hot month, with temperature in the range of an average high of 30.5°C (86.9°F) and an average low of 22.2°C (72°F).

Temperature

Lancaster's December reports an average high-temperature of a still tropical 30.5°C (86.9°F), exhibiting a minor difference from November. Lancaster's nighttime temperature in December falls to an average of 22.2°C (72°F).

Heat index

For most parts of December, the heat index is calculated to be a scorching 41°C (105.8°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. 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 highly important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In Lancaster, the average relative humidity in December is 84%.

Rainfall

In Lancaster, in December, during 25.2 rainfall days, 81mm (3.19") of precipitation is typically accumulated. Throughout the year, there are 297.5 rainfall days, and 1129mm (44.45") of precipitation is accumulated.

Daylight

The month with the shortest days in Lancaster is December, with an average of 11h and 48min of daylight.
On the first day of December, sunrise is at 05:47 and sunset at 17:36. On the last day of the month, sunrise is at 06:02 and sunset at 17:50 -04.

Sunshine

The average sunshine in December in Lancaster, Guyana, is 6.5h.

UV index

The months with the lowest UV index are January through May and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.