May weather forecast
Hirimbura, Sri Lanka

The last month of the spring, May, is another warm month in Hirimbura, Sri Lanka, with an average temperature varying between 26.7°C (80.1°F) and 29.5°C (85.1°F).

Temperature

Hirimbura experiences a subtle adjustment in high-temperatures to a moderately hot 29.5°C (85.1°F) with the onset of May, maintaining near parity with April's 30.3°C (86.5°F). Hirimbura in May experiences a minor decline in temperature, with an average low of 26.7°C (80.1°F) at night.

Heat index

The heat index value for May is estimated at a sweltering 36°C (96.8°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in May is 81%.

Rainfall

The month with the most rainfall in Hirimbura is May, when the rain falls for 27.7 days and typically aggregates up to 302mm (11.89") of precipitation.

Daylight

In May, the average length of the day in Hirimbura is 12h and 24min.
On the first day of May in Hirimbura, sunrise is at 05:56 and sunset at 18:16. On the last day of the month, sunrise is at 05:53 and sunset at 18:20 +0530.

Sunshine

In May, the average sunshine is 9h.

UV index

May and September, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 6 during May translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.