May weather forecast
Mandiana, Guinea

The transition towards the rainy season is more evident in May. Despite temperatures remaining high, the weather changes significantly with the onset of the wet season. Humidity levels continue to rise, reaching a substantial 59% relative humidity. As rainfall dramatically increases to 65mm (2.56"), wind levels remain largely unchanged from previous months. Plan for potential changes in outdoor plans due to frequent rainfall, especially towards the end of the month.

Temperature

The arrival of May brings an average high-temperature of a still very hot 36.9°C (98.4°F), nearly identical to April's 39.3°C (102.7°F). May is characterized by a distinct thermal shift, with nighttime lows averaging at a moderately hot 24.1°C (75.4°F).

Heat index

For most parts of May, the heat index is estimated at a blazing hot 50°C (122°F). Be cautious: Heat exhaustion along with heat cramps are predicted. Heatstroke is a possible consequence of continuous physical effort.
Heat index values are typically calculated for conditions of shade and a light breeze. 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 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In May, the average relative humidity is 59%.

Rainfall

In Mandiana, during May, the rain falls for 17.3 days and regularly aggregates up to 65mm (2.56") of precipitation. In Mandiana, during the entire year, the rain falls for 154.5 days and collects up to 814mm (32.05") of precipitation.

Daylight

In May, the average length of the day in Mandiana is 12h and 37min.
On the first day of the month, sunrise is at 06:16 and sunset at 18:47. On the last day of May, sunrise is at 06:11 and sunset at 18:53 GMT.

Sunshine

The average sunshine in May is 9.3h.

UV index

The average daily maximum UV index in May in Mandiana is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in May leads to these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.