May weather forecast
Devinuwara, Sri Lanka

May, the last month of the spring in Devinuwara, is another tropical month, with temperature in the range of an average low of 26.3°C (79.3°F) and an average high of 30.3°C (86.5°F).

Temperature

The arrival of May marks a slight shift to an average high-temperature of a still tropical 30.3°C (86.5°F) from April's 31.1°C (88°F). Throughout May, Devinuwara reports a steady low-temperature average of 26.3°C (79.3°F), slightly lower than its daytime counterpart.

Heat index

The heat index for May is appraised at a very hot 39°C (102.2°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

May, September and November, with an average relative humidity of 81%, are the most humid months in Devinuwara.

Rainfall

In Devinuwara, Sri Lanka, during May, the rain falls for 15.6 days and regularly aggregates up to 54mm (2.13") of precipitation. In Devinuwara, during the entire year, the rain falls for 180 days and collects up to 509mm (20.04") of precipitation.

Daylight

The average length of the day in May in Devinuwara is 12h and 23min.
On the first day of the month, sunrise is at 05:54 and sunset at 18:14. On the last day of May, in Devinuwara, sunrise is at 05:52 and sunset at 18:18 +0530.

Sunshine

In Devinuwara, the average sunshine in May is 9.3h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Devinuwara, Sri Lanka. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 7 in May leads to these recommendations:
Fend off overexposure. Sun protection is vital. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.