May weather forecast
Palamunai, Sri Lanka

The last month of the spring, May, is another hot month in Palamunai, Sri Lanka, with an average temperature fluctuating between 26.6°C (79.9°F) and 32.7°C (90.9°F).

Temperature

With May's arrival, Palamunai's weather records an average high-temperature of a still tropical 32.7°C (90.9°F), marking little difference from April's 31.8°C (89.2°F). Palamunai encounters an average low-temperature of 26.6°C (79.9°F) during May nights.

Heat index

May's mean heat index is appraised at a scorching 44°C (111.2°F). Mindful: Heat cramps and heat exhaustion are to be expected. Extended physical effort might result in heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in May in Palamunai is 74%.

Rainfall

In Palamunai, during May, the rain falls for 20.7 days and regularly aggregates up to 79mm (3.11") of precipitation. Throughout the year, in Palamunai, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Daylight

In May, the average length of the day in Palamunai is 12h and 28min.
On the first day of May in Palamunai, Sri Lanka, sunrise is at 05:48 and sunset at 18:11. On the last day of the month, sunrise is at 05:44 and sunset at 18:15 +0530.

Sunshine

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

UV index

January through October, with an average maximum UV index of 7, are months with the highest UV index in Palamunai. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 7 during May translates into the following guidance:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.