December weather forecast
Sunyani, Ghana

For Sunyani, December is a month of celebration with the arrival of pleasant weather characterized by drier conditions and cooler days. The dry season stands at its peak as the year ends, offering Sunyani sunny days and starry nights. Fewer hours of daylight coupled with low rainfall make it the perfect time for outdoor exploration and sightseeing in the city. Laced with comfort is the decreased relative humidity of 53%, breaking the continuous pattern of the high humidity of the past months. Thus, the year in Sunyani, Ghana wraps up with a deep sigh of relaxation in terms of weather, ready to start the cycle anew.

Temperature

As December takes hold, the average high-temperature is a still hot 34.5°C (94.1°F), nearly mirroring that of the previous month. Against the high December temperatures, Sunyani records an average drop to a pleasant 20.4°C (68.7°F) at night.

Heat index

The heat index value for December is calculated to be a blisteringly hot 41°C (105.8°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in December is 53%.

Rainfall

The months with the least rainfall are January and December Rain falls for 4.4 days and accumulates 4mm (0.16") of rain.

Daylight

December has the shortest days of the year, with an average of 11h and 42min of daylight.
On the first day of the month, sunrise is at 06:06 and sunset at 17:50. On the last day of December, in Sunyani, sunrise is at 06:21 and sunset at 18:03 GMT.

Sunshine

In December, the average sunshine is 7.9h.

UV index

January through April, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 7 during December translates into the following guidance:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.