May weather forecast
Mandaitivu, Sri Lanka

The last month of the spring, May, is another hot month in Mandaitivu, Sri Lanka, with an average temperature fluctuating between 30.3°C (86.5°F) and 29°C (84.2°F).

Temperature

The arrival of May marks a slight shift to an average high-temperature of a still hot 30.3°C (86.5°F) from April's 30.4°C (86.7°F). Mandaitivu experiences a subtle drop in temperature during the May nights, recording an average of 29°C (84.2°F).

Heat index

May's heat index is estimated at a fiery hot 38°C (100.4°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

May, August and September, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Mandaitivu, during May, the rain falls for 6.9 days and regularly aggregates up to 26mm (1.02") of precipitation. In Mandaitivu, during the entire year, the rain falls for 148.6 days and collects up to 769mm (30.28") of precipitation.

Daylight

The average length of the day in May is 12h and 34min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:21. On the last day of May, sunrise is at 05:48 and sunset at 18:27 +0530.

Sunshine

The average sunshine in May in Mandaitivu is 11.5h.

UV index

The months with the highest UV index in Mandaitivu are January through October and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 7 in May leads to these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.