Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
May's presence marks an average high-temperature of a still moderately hot 27.3°C (81.1°F), subtly varied from April's 27.6°C (81.7°F). During May, Demodara records an average temperature of 19.1°C (66.4°F) at night.Heat index
The heat index value for May is calculated to be a tropical 31°C (87.8°F). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Note that heat index values are valued for light wind and location in the shade. 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', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The average relative humidity in May is 86%.Rainfall
In Demodara, in May, during 29.8 rainfall days, 290mm (11.42") of precipitation is typically accumulated. Throughout the year, there are 297.4 rainfall days, and 2784mm (109.61") of precipitation is accumulated.Daylight
In May, the average length of the day is 12h and 26min.On the first day of May, sunrise is at 05:51 and sunset at 18:13. On the last day of the month, sunrise is at 05:48 and sunset at 18:18 +0530.
Sunshine
In May, the average sunshine is 9.1h.UV index
February through September, 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 vulnerability from unsafe exposure to UV radiation for the average person.Note: In May, the maximum UV index of 6 suggests this advice:
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. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Demodara?
What is the average humidity in May?
How much does it rain in May?
How many hours of daylight does Demodara have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Demodara have in May?
When is the highest UV index?
What is the UV index reading in May?
Average temperature in May
Demodara, Sri Lanka
- Average high temperature in May: 27.3°C
The warmest month (with the highest average high temperature) is April (27.6°C).
The month with the lowest average high temperature is December (24.3°C).
- Average low temperature in May: 19.1°C
The month with the highest average low temperature is May (19.1°C).
The coldest month (with the lowest average low temperature) is February (15.3°C).
Average pressure in May
Demodara, Sri Lanka
- Average pressure in May: 1008.4mbar
The month with the highest atmospheric pressure is January (1011.7mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in May
Demodara, Sri Lanka
- Average wind speed in May: 6.3km/h
The windiest month (with the highest average wind speed) is June (9.1km/h).
The calmest month (with the lowest average wind speed) is April (3.3km/h).
Average humidity in May
Demodara, Sri Lanka
- Average humidity in May: 86%
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is March (80%).
Average rainfall in May
Demodara, Sri Lanka
- Average rainfall in May: 290mm
The wettest month (with the highest rainfall) is October (656mm).
The driest month (with the least rainfall) is January (85mm).
Average rainfall days in May
Demodara, Sri Lanka
- Average rainfall days in May: 29.8 days
The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is February (16.3 days).
Average daylight in May /
Average sunshine in May
Demodara, Sri Lanka
- Average daylight in May: 12h and 2min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in May
Demodara, Sri Lanka
- Average sunshine days in May: 0.8 days
The month with the most sunshine days is February (11 days).
The month with the least sunshine days is May (0.8 days).
Average UV index in May
Demodara, Sri Lanka
- Average UV index in May: 6
The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, October, November and December (UV index 5).
Average cloud cover in May
Demodara, Sri Lanka
- Average cloud cover in May: 52
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 42).
Average visibility in May
Demodara, Sri Lanka
- Average visibility in May: 7km
The months with the highest visibility are June, July and August (9km).
The months with the lowest visibility are November and December (6km).
