May weather forecast
Metihakka, Sri Lanka

May, the last month of the spring in Metihakka, is also a hot month, with an average temperature varying between 31.8°C (89.2°F) and 23°C (73.4°F).

Temperature

Metihakka, Sri Lanka, experiences a minor change to a still hot 31.8°C (89.2°F) in average high-temperature during May, closely reflecting April. The nights of May anticipate an average low-temperature of 23°C (73.4°F).

Heat index

In May, the heat index is appraised at a blisteringly hot 42°C (107.6°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle 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 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In May, the average relative humidity is 77%.

Rainfall

In Metihakka, Sri Lanka, during May, the rain falls for 21.6 days and regularly aggregates up to 117mm (4.61") of precipitation. In Metihakka, during the entire year, the rain falls for 218.8 days and collects up to 1175mm (46.26") of precipitation.

Daylight

The average length of the day in May in Metihakka is 12h and 28min.
On the first day of May in Metihakka, sunrise is at 05:52 and sunset at 18:16. On the last day of the month, sunrise is at 05:49 and sunset at 18:21 +0530.

Sunshine

The average sunshine in May is 10.7h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum UV index of 7 in May translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.