December weather forecastYork, Sierra Leone
December weather for York, Sierra Leone: The month with the shortest days in York, Sierra Leone, is December, with an average of 11h and 42min of daylight. The month with the shortest days in York, Sierra Leone, is December, with an average of 11h and 42min of daylight.
December
Weather in December
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
York, Sierra Leone
- Average high temperature in December: 31°C
The warmest month (with the highest average high temperature) is January (31.4°C).
The month with the lowest average high temperature is August (27.3°C).
- Average low temperature in December: 24.5°C
The month with the highest average low temperature is May (26.2°C).
The coldest month (with the lowest average low temperature) is August (23.9°C).
Average pressure in December
York, Sierra Leone
- Average pressure in December: 1011.1mbar
The month with the highest atmospheric pressure is July (1013.8mbar).
The months with the lowest atmospheric pressure are February and March (1010.4mbar).
Average wind speed in December
York, Sierra Leone
- Average wind speed in December: 7.6km/h
The windiest month (with the highest average wind speed) is August (12km/h).
The calmest month (with the lowest average wind speed) is November (6.8km/h).
Average humidity in December
York, Sierra Leone
- Average humidity in December: 69%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is January (68%).
Average rainfall in December
York, Sierra Leone
- Average rainfall in December: 7mm
The wettest month (with the highest rainfall) is August (391mm).
The driest month (with the least rainfall) is February (1mm).
Average rainfall days in December
York, Sierra Leone
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is July (30.3 days).
The month with the least rainy days is February (0.8 days).
Average daylight in December /
Average sunshine in December
York, Sierra Leone
- Average daylight in December: 11h and 42min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in December: 9h and 42min
The month with the most sunshine is February (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 4h and 48min).
Average sunshine days in December
York, Sierra Leone
- Average sunshine days in December: 25.5 days
The month with the most sunshine days is January (29 days).
The month with the least sunshine days is August (0.5 days).
Average UV index in December
York, Sierra Leone
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, September, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 6).
Average cloud cover in December
York, Sierra Leone
- Average cloud cover in December: 12
The month with the most cloud cover is August (Cloud cover 67).
The month with the least cloud cover is February (Cloud cover 11).
Average visibility in December
York, Sierra Leone
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).
