May weather forecast
Vaddakkachchi, Sri Lanka

May

Weather in May

May, the last month of the spring in Vaddakkachchi, is another hot month, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 29°C (84.2°F).

Temperature

A minor adjustment in Vaddakkachchi's average high-temperature is noted with the start of May, touching a still hot 30.3°C (86.5°F) from April's 30.4°C (86.7°F). Vaddakkachchi's May nights demonstrate minimal variation from the daytime temperatures, with an average of 29°C (84.2°F).

Heat index

The heat index value for May is estimated at a torrid 38°C (100.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Heat index determinations are made taking into account the shade and light air movements. 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', binds temperature metrics with humidity values to give a sense of the actual warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

May, August and September, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Vaddakkachchi, during May, the rain falls for 6.9 days and regularly aggregates up to 26mm (1.02") of precipitation. In Vaddakkachchi, during the entire year, the rain falls for 148.6 days and collects up to 769mm (30.28") of precipitation.

Daylight

The average length of the day in May is 12h and 33min.
On the first day of May in Vaddakkachchi, sunrise is at 05:51 and sunset at 18:19. On the last day of the month, sunrise is at 05:46 and sunset at 18:24 +0530.

Sunshine

In May, the average sunshine in Vaddakkachchi is 11.5h.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the maximum UV index of 7 suggests these recommendations:
Fend off overexposure. Sun protection is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

How hot is May in Vaddakkachchi?
In May, in Vaddakkachchi, the average high-temperature is 30.3°C (86.5°F), and the average low-temperature is 29°C (84.2°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in May is estimated at 38°C (100.4°F).
What are the most humid months in Vaddakkachchi?
The months with the highest humidity in Vaddakkachchi, Sri Lanka, are May, August and September, with an average relative humidity of 79%.
What is the average humidity in May in Vaddakkachchi?
In Vaddakkachchi, Sri Lanka, the average relative humidity in May is 79%.
How much does it rain in Vaddakkachchi in May?
In Vaddakkachchi, in May, during 6.9 rainfall days, 26mm (1.02") of precipitation is typically accumulated.
What is the average length of the day in May in Vaddakkachchi?
The average day length in May in Vaddakkachchi, Sri Lanka, is 12h and 33min.
When are sunrise and sunset in May in Vaddakkachchi?
In May, on the first day of the month, sunrise is at 05:51 and sunset at 18:19. On the last day of the month, in Vaddakkachchi, sunrise is at 05:46 and sunset at 18:24 +0530.
How many hours of sunshine does Vaddakkachchi have in May?
In May, the average sunshine duration in Vaddakkachchi is 11.5h.
When is the highest UV index in Vaddakkachchi?
The months with the highest UV index are January through October and December, with an average maximum UV index of 7.
What is the UV index intensity in May in Vaddakkachchi?
In May, the average daily maximum UV index in Vaddakkachchi is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Vaddakkachchi, Sri Lanka
  • Average high temperature in May: 30.3°C

The warmest month (with the highest average high temperature) is April (30.4°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
Vaddakkachchi, Sri Lanka
  • Average pressure in May: 1006.5mbar

The month with the highest atmospheric pressure is January (1012.5mbar).
The month with the lowest atmospheric pressure is June (1005.9mbar).

Average wind speed in May
Vaddakkachchi, Sri Lanka
  • Average wind speed in May: 28.5km/h

The windiest month (with the highest average wind speed) is June (33.8km/h).
The calmest months (with the lowest average wind speed) are March and April (16.7km/h).

Average humidity in May
Vaddakkachchi, Sri Lanka
  • Average humidity in May: 79%

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

Average rainfall in May
Vaddakkachchi, Sri Lanka
  • Average rainfall in May: 26mm

The wettest month (with the highest rainfall) is October (191mm).
The driest month (with the least rainfall) is March (13mm).

Average rainfall days in May
Vaddakkachchi, Sri Lanka
  • Average rainfall days in May: 6.9 days

The month with the highest number of rainy days is October (22.6 days).
The month with the least rainy days is March (5.8 days).

Average daylight in May /
Average sunshine in May
Vaddakkachchi, Sri Lanka
  • Average daylight in May: 12h and 4min

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 3min

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

Average sunshine days in May
Vaddakkachchi, Sri Lanka
  • Average sunshine days in May: 23.7 days

The month with the most sunshine days is March (23.9 days).
The month with the least sunshine days is November (6.3 days).

Average UV index in May
Vaddakkachchi, 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, October and December (UV index 7).
The month with the lowest UV index is November (UV index 6).

Average cloud cover in May
Vaddakkachchi, Sri Lanka
  • Average cloud cover in May: 23

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
Vaddakkachchi, Sri Lanka
  • Average visibility in May: 10km

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

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