May weather forecast
Hunnasgiriya, Sri Lanka

The last month of the spring, May, is also a hot month in Hunnasgiriya, Sri Lanka, with an average temperature varying between 30.1°C (86.2°F) and 21.8°C (71.2°F).

Temperature

The arrival of May denotes a barely perceptible change in the average high-temperatures to a still tropical 30.1°C (86.2°F) from April's 31.2°C (88.2°F). During the month of May, the temperature in Hunnasgiriya generally drops to a low average of 21.8°C (71.2°F).

Heat index

The heat index in May is appraised at a very hot 38°C (100.4°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The average relative humidity in May in Hunnasgiriya, Sri Lanka, is 80%.

Rainfall

In Hunnasgiriya, in May, it is raining for 28.6 days, with typically 163mm (6.42") of accumulated precipitation. In Hunnasgiriya, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

In Hunnasgiriya, the average length of the day in May is 12h and 28min.
On the first day of May in Hunnasgiriya, sunrise is at 05:52 and sunset at 18:15. On the last day of the month, sunrise is at 05:48 and sunset at 18:19 +0530.

Sunshine

In Hunnasgiriya, the average sunshine in May is 10.4h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index, 6 during May, leads to the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.