May weather forecast
York, Sierra Leone

May, the last month of the spring in York, is another hot month, with temperature in the range of an average high of 30.7°C (87.3°F) and an average low of 26.2°C (79.2°F).

Temperature

York records an average high-temperature of a still hot 30.7°C (87.3°F) as May arrives, nearly mirroring the previous month's climate. May is characterized by a steady nighttime low-temperature of 26.2°C (79.2°F).

Heat index

For most parts of May, the heat index is evaluated at a sweltering 39°C (102.2°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. 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.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In May, the average relative humidity in York is 78%.

Rainfall

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

Daylight

In May, the average length of the day in York is 12h and 30min.
On the first day of May, sunrise is at 06:37 and sunset at 19:02. On the last day of the month, sunrise is at 06:33 and sunset at 19:07 GMT.

Sunshine

The average sunshine in May is 8.3h.

UV index

The months with the highest UV index in York are January through June, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 7 during May, leads to the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.