May weather forecastIlavalai, Sri Lanka

May

Weather in May

The last month of the spring, May, is also a hot month in Ilavalai, Sri Lanka, with temperature in the range of an average high of 30.7°C (87.3°F) and an average low of 29°C (84.2°F).

Temperature

May, recording an average high temperature of 30.7°C (87.3°F) and a low temperature of 29°C (84.2°F), is Ilavalai's warmest month.

Heat index

The heat index for May is appraised at a scorching 40°C (104°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The months with the highest humidity are May and September, with an average relative humidity of 79%.

Rainfall

In May, the rain falls for 10.3 days. Throughout May, 48mm (1.89") of precipitation is accumulated. In Ilavalai, during the entire year, the rain falls for 189.6 days and collects up to 1106mm (43.54") of precipitation.

Daylight

In May, the average length of the day is 12h and 34min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:21. On the last day of May, sunrise is at 05:48 and sunset at 18:27 +0530.

Sunshine

The months with the most sunshine in Ilavalai are May and June, with an average of 11.6h of sunshine.

UV index

The months with the highest UV index are January through September and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, a regular UV index of 7 translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Updated: Aug 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Ilavalai's temperature records reveal May as the warmest month, marked by average highs of 30.7°C (87.3°F) and lows of 29°C (84.2°F).

The average high-temperature and low-temperature during May are 30.7°C (87.3°F) and 29°C (84.2°F) respectively. In May, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 40°C (104°F).

The months with the highest humidity are May and September, with an average relative humidity of 79%.

In May, the average relative humidity is 79%.

In Ilavalai, in May, during 10.3 rainfall days, 48mm (1.89") of precipitation is typically accumulated.

In May, the average day length is 12h and 34min.

On the first day of May, sunrise is at 05:52 and sunset at 18:21. On the last day of the month, sunrise is at 05:48 and sunset at 18:27 +0530.

May and June, with an average of 11.6h of sunshine, are months with the most sunshine.

In Ilavalai, the average sunshine duration in May is 11.6h.

The months with the highest UV index are January through September and December, with an average maximum UV index of 7.

The average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

30.4°C

30.7°C

29.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

17.2km/h

28.5km/h

33.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

17.6

17.8

14.8

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Ilavalai, Sri Lanka

Average high temperature in May: 30.7°C

The warmest month (with the highest average high temperature) is May (30.7°C).
The month with the lowest average high temperature is January (26.8°C).

Average low temperature in May: 29°C

The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (25.5°C).

Average pressure in May
Ilavalai, Sri Lanka

Average pressure in May: 1006.4mbar

The month with the highest atmospheric pressure is January (1012.5mbar).
The month with the lowest atmospheric pressure is June (1005.8mbar).

Average wind speed in May
Ilavalai, Sri Lanka

Average wind speed in May: 27.7km/h

The windiest month (with the highest average wind speed) is June (32.9km/h).
The calmest month (with the lowest average wind speed) is April (16.3km/h).

Average humidity in May
Ilavalai, Sri Lanka

Average humidity in May: 79%

The months with the highest relative humidity are May and September (79%).
The month with the lowest relative humidity is March (75%).

Average rainfall in May
Ilavalai, Sri Lanka

Average rainfall in May: 48mm

The wettest months (with the highest rainfall) are October and November (257mm).
The driest month (with the least rainfall) is March (18mm).

Average rainfall days in May
Ilavalai, Sri Lanka

Average rainfall days in May: 10.3 days

The month with the highest number of rainy days is October (25.1 days).
The months with the least rainy days are February and March (7.6 days).

Average daylight in May /
Average sunshine in May
Ilavalai, Sri Lanka

Average daylight in May: 12h and 36min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).

Average sunshine in May: 11h and 36min

The months with the most sunshine are May and June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in May
Ilavalai, Sri Lanka

Average sunshine days in May: 17.8 days

The month with the most sunshine days is March (21.2 days).
The month with the least sunshine days is November (3.8 days).

Average UV index in May
Ilavalai, Sri Lanka

Average UV index in May: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September and December (UV index 7).
The months with the lowest UV index are October and November (UV index 6).

Average cloud cover in May
Ilavalai, Sri Lanka

Average cloud cover in May: 22

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 16).

Average visibility in May
Ilavalai, Sri Lanka

Average visibility in May: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).