May weather forecast
Lancaster, Guyana

May, the last month of the spring in Lancaster, is another tropical month, with temperature in the range of an average low of 22.4°C (72.3°F) and an average high of 30.8°C (87.4°F).

Temperature

With the transition into May, Lancaster notes an average high-temperature of a still hot 30.8°C (87.4°F), closely resembling April. Lancaster observes an average low-temperature of 22.4°C (72.3°F) during May nights.

Heat index

The heat index in May is calculated to be a scorching 42°C (107.6°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In May, the average relative humidity is 85%.

Rainfall

May is the month with the most rainfall in Lancaster. Rain falls for 28.3 days and accumulates 171mm (6.73") of precipitation.

Daylight

In Lancaster, the average length of the day in May is 12h and 23min.
On the first day of the month, sunrise is at 05:40 and sunset at 17:59. On the last day of May, in Lancaster, sunrise is at 05:37 and sunset at 18:03 -04.

Sunshine

In May, the average sunshine is 6.3h.

UV index

The months with the lowest UV index in Lancaster, Guyana, are January through May and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. 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. Tightly woven clothing, when worn loosely, shields effectively against the Sun.