May weather forecast
Rathkarawwa, Sri Lanka

May, the last month of the spring in Rathkarawwa, is another tropical month, with an average temperature ranging between max 30.8°C (87.4°F) and min 26.7°C (80.1°F).

Temperature

During May, Rathkarawwa records an average high-temperature of a still hot 30.8°C (87.4°F), marking a slight divergence from April's 31.1°C (88°F). Nighttime temperature reflects an average dip to a moderately hot 26.7°C (80.1°F) in May, subtly cooler than its daytime highs.

Heat index

Throughout May, the heat index is calculated to be a very hot 39°C (102.2°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Rathkarawwa, the average relative humidity in May is 77%.

Rainfall

In Rathkarawwa, in May, during 17.8 rainfall days, 72mm (2.83") of precipitation is typically accumulated. In Rathkarawwa, during the entire year, the rain falls for 192.9 days and collects up to 942mm (37.09") of precipitation.

Daylight

In May, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:14. On the last day of May, sunrise is at 05:49 and sunset at 18:18 +0530.

Sunshine

The average sunshine in May is 10.9h.

UV index

January through September, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In May, a daily UV index of 7 turns into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.