May weather forecast
Koidu, Sierra Leone

May bears the hallmarks of a typical wet season in Koidu, distinguished by the highest rainfall recorded in the year at 166mm (6.54"). Accompanying the substantial rainfall, the city also witnesses a spike in humidity levels. The severely limited sunshine, paired with increased cloud coverage, augments the moist conditions. The decrease in wind speed also means there is lesser relief from the damp weather. A similar weather trend transcends into June, ensuring the continuation of the wet spells.

Temperature

The transition from April to May sees average high-temperatures adjusting to a still hot 32.1°C (89.8°F), from a not significantly different 34.8°C (94.6°F). Koidu's temperature tends to fall to an average low of 21.9°C (71.4°F) during the nights of May.

Heat index

In May, the average heat index is appraised at a life-threatening hot 47°C (116.6°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in May in Koidu, Sierra Leone, is 84%.

Rainfall

In Koidu, in May, it is raining for 28.8 days, with typically 166mm (6.54") of accumulated precipitation. In Koidu, during the entire year, the rain falls for 252.4 days and collects up to 1704mm (67.09") of precipitation.

Daylight

In May, the average length of the day in Koidu is 12h and 31min.
On the first day of the month, sunrise is at 06:27 and sunset at 18:54. On the last day of May, in Koidu, sunrise is at 06:23 and sunset at 18:59 GMT.

Sunshine

The average sunshine in May is 7.1h.

UV index

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 6 during May leads to these advisories:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.