May weather forecast
Haliyadda, Sri Lanka

The last month of the spring, May, is also a hot month in Haliyadda, Sri Lanka, with temperature in the range of an average high of 30.1°C (86.2°F) and an average low of 21.8°C (71.2°F).

Temperature

Haliyadda notes an average high-temperature of a still hot 30.1°C (86.2°F) in May, displaying minor variation from April. The nighttime temperature, during May, averages of 21.8°C (71.2°F).

Heat index

May's average heat index is calculated to be a torrid 38°C (100.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In May, the average relative humidity in Haliyadda is 80%.

Rainfall

In Haliyadda, in May, it is raining for 28.6 days, with typically 163mm (6.42") of accumulated precipitation. In Haliyadda, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

The average length of the day in May in Haliyadda is 12h and 28min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:15. On the last day of May, sunrise is at 05:48 and sunset at 18:20 +0530.

Sunshine

The average sunshine in May in Haliyadda is 10.4h.

UV index

The months with the highest UV index in Haliyadda are January through September, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 in May translates into these instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.