May weather forecast
Kalpitiya, Sri Lanka

May

Weather in May

The last month of the spring, May, is also a hot month in Kalpitiya, Sri Lanka, with an average temperature fluctuating between 31.3°C (88.3°F) and 27.4°C (81.3°F).

Temperature

May's beginning signals an average high-temperature of a still tropical 31.3°C (88.3°F), barely different from April's 31.9°C (89.4°F). Kalpitiya, during May nights, experiences a subtle shift to a low average of 27.4°C (81.3°F) from the day's heat.

Heat index

The heat index value for May is evaluated at a scorching 41°C (105.8°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in May is 78%.

Rainfall

In Kalpitiya, Sri Lanka, during May, the rain falls for 19.8 days and regularly aggregates up to 88mm (3.46") of precipitation. In Kalpitiya, during the entire year, the rain falls for 221.7 days and collects up to 1071mm (42.17") of precipitation.

Daylight

In May, the average length of the day in Kalpitiya is 12h and 30min.
On the first day of the month, sunrise is at 05:55 and sunset at 18:20. On the last day of May, sunrise is at 05:51 and sunset at 18:25 +0530.

Sunshine

In May, the average sunshine in Kalpitiya is 9.7h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Kalpitiya, Sri Lanka, are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during May leads to these advisories:
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., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

Is it hot in Kalpitiya during May?
In May, in Kalpitiya, the average high-temperature is 31.3°C (88.3°F), and the average low-temperature is 27.4°C (81.3°F). In May, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 41°C (105.8°F).
What is the average humidity in May in Kalpitiya?
In May, the average relative humidity in Kalpitiya, Sri Lanka, is 78%.
How much does it rain in Kalpitiya in May?
In May, in Kalpitiya, the rain falls for 19.8 days. Throughout May, 88mm (3.46") of precipitation is accumulated.
How many hours of daylight does Kalpitiya have in May?
In Kalpitiya, the average day length in May is 12h and 30min.
When is the sunrise / sunset in May in Kalpitiya?
In May, on the first day of the month, sunrise is at 05:55 and sunset at 18:20. On the last day of the month, in Kalpitiya, sunrise is at 05:51 and sunset at 18:25 +0530.
How many hours of sunshine does Kalpitiya have in May?
In May, the average sunshine duration is 9.7h.
What are the months with the highest UV index in Kalpitiya?
The months with the highest UV index are January through December, with an average maximum UV index of 7.
What is the month with the lowest UV index in Kalpitiya?
January through December, with an average maximum UV index of 7, are months with the lowest UV index in Kalpitiya.
How high is the UV index in May in Kalpitiya?
In May, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
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 - Kalpitiya, Sri Lanka
Average temperature in May
Kalpitiya, Sri Lanka
  • Average high temperature in May: 31.3°C

The warmest month (with the highest average high temperature) is April (31.9°C).
The months with the lowest average high temperature are January and December (29.3°C).

  • Average low temperature in May: 27.4°C

The month with the highest average low temperature is May (27.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).

Average pressure in May - Kalpitiya, Sri Lanka
Average pressure in May
Kalpitiya, Sri Lanka
  • Average pressure in May: 1007.7mbar

The month with the highest atmospheric pressure is January (1012mbar).
The month with the lowest atmospheric pressure is June (1007.5mbar).

Average wind speed in May - Kalpitiya, Sri Lanka
Average wind speed in May
Kalpitiya, Sri Lanka
  • Average wind speed in May: 24.4km/h

The windiest month (with the highest average wind speed) is June (30.4km/h).
The calmest month (with the lowest average wind speed) is April (14.1km/h).

Average humidity in May - Kalpitiya, Sri Lanka
Average humidity in May
Kalpitiya, Sri Lanka
  • Average humidity in May: 78%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is March (73%).

Average rainfall in May - Kalpitiya, Sri Lanka
Average rainfall in May
Kalpitiya, Sri Lanka
  • Average rainfall in May: 88mm

The wettest month (with the highest rainfall) is October (195mm).
The driest months (with the least rainfall) are January and February (31mm).

Average rainfall days in May - Kalpitiya, Sri Lanka
Average rainfall days in May
Kalpitiya, Sri Lanka
  • Average rainfall days in May: 19.8 days

The month with the highest number of rainy days is November (25.1 days).
The month with the least rainy days is February (10.5 days).

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

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

  • Average sunshine in May: 9h and 4min

The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 0min).

Average sunshine days in May - Kalpitiya, Sri Lanka
Average sunshine days in May
Kalpitiya, Sri Lanka
  • Average sunshine days in May: 5 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is April (3.6 days).

Average UV index in May - Kalpitiya, Sri Lanka
Average UV index in May
Kalpitiya, 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, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in May - Kalpitiya, Sri Lanka
Average cloud cover in May
Kalpitiya, Sri Lanka
  • Average cloud cover in May: 45

The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 22).

Average visibility in May - Kalpitiya, Sri Lanka
Average visibility in May
Kalpitiya, Sri Lanka
  • Average visibility in May: 10km

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

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