May weather forecast
Radawadunna, Sri Lanka

May

Weather in May

May, the last month of the spring in Radawadunna, is another tropical month, with an average temperature varying between 30.8°C (87.4°F) and 26.4°C (79.5°F).

Temperature

The transition from April to May sees an average high-temperature of a still hot 30.8°C (87.4°F), indicating a minor variance from the prior month. Radawadunna, in May, registers a nighttime average temperature of 26.4°C (79.5°F).

Heat index

For May, the heat index is evaluated at a blisteringly hot 40°C (104°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Radawadunna, the average relative humidity in May is 80%.

Rainfall

In Radawadunna, Sri Lanka, during May, the rain falls for 26.3 days and regularly aggregates up to 204mm (8.03") of precipitation. In Radawadunna, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

In May, the average length of the day is 12h and 27min.
On the first day of May, sunrise is at 05:55 and sunset at 18:17. On the last day of the month, sunrise is at 05:51 and sunset at 18:22 +0530.

Sunshine

In Radawadunna, the average sunshine in May is 8.8h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 6 in May translates into these instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

How hot is it in Radawadunna in May?
In Radawadunna, 30.8°C (87.4°F) is the average high-temperature and 26.4°C (79.5°F) is the average low-temperature during May. In May, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is evaluated at 40°C (104°F).
What is the average humidity in May?
The average relative humidity in May is 80%.
How much does it rain in May?
In May, the rain falls for 26.3 days. Throughout May, 204mm (8.03") of precipitation is accumulated.
How many hours of daylight does Radawadunna have in May?
The average day length in May is 12h and 27min.
What time are sunrise and sunset in May?
On the first day of May, sunrise is at 05:55 and sunset at 18:17. On the last day of the month, sunrise is at 05:51 and sunset at 18:22 +0530.
How many hours of sunshine does Radawadunna have in May?
In May, the average sunshine duration is 8.8h.
What are the months with the lowest UV index?
The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6.
What is the UV index intensity in May?
In Radawadunna, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May - Radawadunna, Sri Lanka
Average temperature in May
Radawadunna, Sri Lanka
  • Average high temperature in May: 30.8°C

The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is July (29.2°C).

  • Average low temperature in May: 26.4°C

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).

Average pressure in May - Radawadunna, Sri Lanka
Average pressure in May
Radawadunna, Sri Lanka
  • Average pressure in May: 1008.4mbar

The month with the highest atmospheric pressure is January (1011.7mbar).
The months with the lowest atmospheric pressure are May and June (1008.4mbar).

Average wind speed in May - Radawadunna, Sri Lanka
Average wind speed in May
Radawadunna, Sri Lanka
  • Average wind speed in May: 15.5km/h

The windiest month (with the highest average wind speed) is June (18.3km/h).
The calmest month (with the lowest average wind speed) is March (9.1km/h).

Average humidity in May - Radawadunna, Sri Lanka
Average humidity in May
Radawadunna, Sri Lanka
  • Average humidity in May: 80%

The months with the highest relative humidity are June, July and August (82%).
The months with the lowest relative humidity are January and February (73%).

Average rainfall in May - Radawadunna, Sri Lanka
Average rainfall in May
Radawadunna, Sri Lanka
  • Average rainfall in May: 204mm

The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).

Average rainfall days in May - Radawadunna, Sri Lanka
Average rainfall days in May
Radawadunna, Sri Lanka
  • Average rainfall days in May: 26.3 days

The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (9.7 days).

Average daylight in May / Average sunshine in May - Radawadunna, Sri Lanka
Average daylight in May /
Average sunshine in May
Radawadunna, Sri Lanka
  • Average daylight in May: 12h and 3min

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: 8h and 5min

The months with the most sunshine are January, February, March and April (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

Average sunshine days in May - Radawadunna, Sri Lanka
Average sunshine days in May
Radawadunna, Sri Lanka
  • Average sunshine days in May: 3.6 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).

Average UV index in May - Radawadunna, Sri Lanka
Average UV index in May
Radawadunna, Sri Lanka
  • Average UV index in May: 6

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

Average cloud cover in May - Radawadunna, Sri Lanka
Average cloud cover in May
Radawadunna, Sri Lanka
  • Average cloud cover in May: 52

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 21).

Average visibility in May - Radawadunna, Sri Lanka
Average visibility in May
Radawadunna, Sri Lanka
  • Average visibility in May: 9km

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

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