May weather forecast
Ariyalai, Sri Lanka

May, the last month of the spring in Ariyalai, is another tropical month, with an average temperature fluctuating between 29°C (84.2°F) and 30.3°C (86.5°F).

Temperature

With the advent of May, Ariyalai's high-temperatures adjust to a still hot 30.3°C (86.5°F), closely aligning with the preceding month. Ariyalai's nocturnal average in May closely mirrors its daytime temperatures, settling at a warm 29°C (84.2°F).

Heat index

May's mean heat index is computed to be a sweltering 38°C (100.4°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

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

Rainfall

In Ariyalai, Sri Lanka, in May, it is raining for 6.9 days, with typically 26mm (1.02") of accumulated precipitation. In Ariyalai, during the entire year, the rain falls for 148.6 days and collects up to 769mm (30.28") of precipitation.

Daylight

In Ariyalai, the average length of the day in May is 12h and 34min.
On the first day of May in Ariyalai, sunrise is at 05:52 and sunset at 18:20. On the last day of the month, sunrise is at 05:47 and sunset at 18:26 +0530.

Sunshine

The average sunshine in May in Ariyalai, Sri Lanka, is 11.5h.

UV index

The months with the highest UV index in Ariyalai are January through October and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, a daily maximum UV index of 7 leads to the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.