May weather forecast
Koya, Sierra Leone

May, the last month of the spring in Koya, is another tropical month, with an average temperature varying between 30.7°C (87.3°F) and 26.2°C (79.2°F).

Temperature

The beginning of May records an average high-temperature of a still hot 30.7°C (87.3°F), almost echoing the conditions of the previous month. Koya encounters a negligible difference from daytime peaks throughout the May nights, with a low-temperature average of 26.2°C (79.2°F).

Heat index

May's mean heat index is evaluated at a sweltering 39°C (102.2°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. 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 are primarily vital for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In May, the average relative humidity in Koya, Sierra Leone, is 78%.

Rainfall

In Koya, in May, it is raining for 19.6 days, with typically 66mm (2.6") of accumulated precipitation. In Koya, during the entire year, the rain falls for 205.9 days and collects up to 1507mm (59.33") of precipitation.

Daylight

The average length of the day in May is 12h and 32min.
On the first day of the month, sunrise is at 06:35 and sunset at 19:02. On the last day of May, in Koya, sunrise is at 06:31 and sunset at 19:08 GMT.

Sunshine

In May, the average sunshine is 8.3h.

UV index

January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 in May translates into this advice:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.