December weather forecast
Garissa, Kenya

As the year concludes, December's weather in Garissa is a mixture of November's rain-soaked atmosphere and a sneak peek into January's warmer days. A continuation of the rainy trend is observed at the start of the month, but it shows a gradual reduction as the month progresses. Meanwhile, the city also begins to warm up, heralding the arrival of January's more elevated temperatures. Despite the intermittent showers, December retains a high number of sunshine hours to maintain Garissa's sun-kissed reputation. As such, the month characteristically encapsulates the city's weather identity with its blend of warm temperatures, regular rainfall, and abundant sunshine.

Temperature

The average high-temperature in Garissa, Kenya, is a still tropical 32.7°C (90.9°F) in December, hardly different from the 32.9°C (91.2°F) recorded in November. Garissa witnesses a consistent average low-temperature of 23.8°C (74.8°F) throughout December.

Heat index

The heat index value during December is computed to be a blisteringly hot 41°C (105.8°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The months with the highest humidity are November and December, with an average relative humidity of 65%.

Rainfall

In Garissa, during December, the rain falls for 18.7 days and regularly aggregates up to 85mm (3.35") of precipitation. Throughout the year, there are 103.3 rainfall days, and 326mm (12.83") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 6min of daylight.
On the first day of the month, sunrise is at 06:06 and sunset at 18:14. On the last day of December, in Garissa, Kenya, sunrise is at 06:20 and sunset at 18:29 EAT.

Sunshine

The average sunshine in December is 8.4h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.