December weather forecast
Irri, Nigeria

December, the first month of the winter in Irri, is still a tropical month, with temperature in the range of an average low of 24.2°C (75.6°F) and an average high of 34.6°C (94.3°F).

Temperature

Irri experiences a transition to a still hot 34.6°C (94.3°F) in average high-temperatures with the arrival of December, not greatly differing from November's 32.3°C (90.1°F). Irri experiences a nighttime temperature average of 24.2°C (75.6°F) during December.

Heat index

The average heat index in December is calculated to be a life-threatening hot 48°C (118.4°F). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance 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.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in December is 68%.

Rainfall

The month with the least rainfall in Irri is December, when the rain falls for 13 days and typically collects 21mm (0.83") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 48min of daylight.
On the first day of the month, sunrise is at 06:29 and sunset at 18:19. On the last day of December, sunrise is at 06:43 and sunset at 18:32 WAT.

Sunshine

With an average of 9.4h of sunshine, December has the most sunshine of the year.

UV index

The months with the highest UV index are January through May, October through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 7 in December translates into these instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.