May weather forecast
Batticaloa, Sri Lanka

May witnesses a notable increase in temperature, humidity, and rainfall moving away from the calm April weather. Conditions becoming slightly less favorable for extensive outdoor activities. Short tropical showers strike frequently, yet the month still retains a pleasant air. With rainfall coming in at 79mm (3.11"), it signals the start of the monsoon season. Overall, the weather remains warm and tropical, much like Batticaloa's typical climate.

Temperature

With the onset of May, a modest change to a still hot 32.7°C (90.9°F) from April's 31.8°C (89.2°F) is noted in high-temperature. During the month of May, the nighttime temperature in Batticaloa falls to an average of 26.6°C (79.9°F).

Heat index

May's mean heat index is estimated at a blistering 44°C (111.2°F). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.
Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In May, the average relative humidity in Batticaloa is 74%.

Rainfall

In Batticaloa, in May, during 20.7 rainfall days, 79mm (3.11") of precipitation is typically accumulated. In Batticaloa, during the entire year, the rain falls for 237.8 days and collects up to 1259mm (49.57") of precipitation.

Daylight

In May, the average length of the day in Batticaloa is 12h and 29min.
On the first day of May, sunrise is at 05:48 and sunset at 18:12. On the last day of the month, sunrise is at 05:44 and sunset at 18:17 +0530.

Sunshine

In Batticaloa, Sri Lanka, the average sunshine in May is 11.6h.

UV index

The months with the highest UV index are January through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 7 during May, leads to the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.