December weather forecast
York, Sierra Leone

December, the first month of the winter in York, is also a hot month, with an average temperature varying between 31°C (87.8°F) and 24.5°C (76.1°F).

Temperature

York marks the onset of December with an average high-temperature of a still tropical 31°C (87.8°F), subtly divergent from November's 30.1°C (86.2°F). December brings with it a nighttime average temperature of 24.5°C (76.1°F) in York.

Heat index

The heat index value during December is evaluated at a sweltering 37°C (98.6°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In December, the average relative humidity in York is 69%.

Rainfall

In December, the rain falls for 4 days. Throughout December, 7mm (0.28") of precipitation is accumulated. Throughout the year, there are 205.9 rainfall days, and 1507mm (59.33") of precipitation is accumulated.

Daylight

The month with the shortest days in York, Sierra Leone, is December, with an average of 11h and 42min of daylight.
On the first day of December, sunrise is at 06:51 and sunset at 18:32. On the last day of the month, sunrise is at 07:06 and sunset at 18:45 GMT.

Sunshine

In York, the average sunshine in December is 9.7h.

UV index

The months with the highest UV index in York are January through June, September through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 during December leads to these advisories:
Shield from overexposure. Defense against sun-related harm is required. 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. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.