May weather forecast
Valayanmadam, Sri Lanka

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

Temperature

The advent of May signifies a minor shift to an average high-temperature of a still hot 30.3°C (86.5°F), aligning closely with April. Valayanmadam's nocturnal readings in May exhibit minimal variation from the daytime temperatures, averaging at a moderately hot 29°C (84.2°F).

Heat index

The heat index in May is evaluated at a fiery hot 38°C (100.4°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

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

Rainfall

In Valayanmadam, in May, during 6.9 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Valayanmadam, 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 33min.
On the first day of May in Valayanmadam, sunrise is at 05:50 and sunset at 18:17. On the last day of the month, sunrise is at 05:45 and sunset at 18:23 +0530.

Sunshine

In Valayanmadam, the average sunshine in May is 11.5h.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index in Valayanmadam. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 7 in May transforms into this advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.