May weather forecast
Niwanthidiya, Sri Lanka

May, the last month of the spring in Niwanthidiya, is also a hot month, with an average temperature fluctuating between 26.4°C (79.5°F) and 30.3°C (86.5°F).

Temperature

With the advent of May, Niwanthidiya's high-temperatures adjust to a still tropical 30.3°C (86.5°F), closely aligning with the preceding month. During May's nights, Niwanthidiya notes a minor temperature decline, reaching an average of 26.4°C (79.5°F).

Heat index

During May, the heat index is computed to be a sweltering 39°C (102.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. 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. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Niwanthidiya, the average relative humidity in May is 81%.

Rainfall

In Niwanthidiya, during May, the rain falls for 27.1 days and regularly aggregates up to 279mm (10.98") of precipitation. In Niwanthidiya, during the entire year, the rain falls for 272.3 days and collects up to 2039mm (80.28") of precipitation.

Daylight

The average length of the day in May is 12h and 26min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:18. On the last day of May, sunrise is at 05:53 and sunset at 18:22 +0530.

Sunshine

In May, the average sunshine is 8.7h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index in Niwanthidiya. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during May translates into the following guidance:
Resist extreme sun exposure. Guarding against solar damage is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.