May weather forecast
Dedigamuwa, Sri Lanka

The last month of the spring, May, is another hot month in Dedigamuwa, Sri Lanka, with an average temperature ranging between max 30.6°C (87.1°F) and min 26.3°C (79.3°F).

Temperature

With May's arrival, Dedigamuwa notes an average high-temperature of a still hot 30.6°C (87.1°F), closely following the trend of the preceding month. Dedigamuwa's nighttime temperatures in May see a subtle dip to an average of 26.3°C (79.3°F).

Heat index

May's heat index is evaluated at a scorching 40°C (104°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Dedigamuwa, the average relative humidity in May is 81%.

Rainfall

In Dedigamuwa, in May, during 28.8 rainfall days, 306mm (12.05") of precipitation is typically accumulated. In Dedigamuwa, Sri Lanka, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

In Dedigamuwa, the average length of the day in May is 12h and 26min.
On the first day of May, sunrise is at 05:55 and sunset at 18:18. On the last day of the month, sunrise is at 05:52 and sunset at 18:22 +0530.

Sunshine

In May, the average sunshine in Dedigamuwa, Sri Lanka, is 8.6h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index in Dedigamuwa. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during May leads to these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.