May weather forecast and climate
Sigiriya, Sri Lanka

Weather in May

May, the last month of the spring, in Sigiriya, is also a hot month, with average temperature ranging between min 24.5°C (76.1°F) and max 34.2°C (93.6°F).

Temperature

In Sigiriya, the average high-temperature is relatively the same as in April - a still tropical 34.2°C (93.6°F). The average low-temperature, in Sigiriya, is 24.5°C (76.1°F).

Heat index

In May, the average heat index is computed to be a blazing hot 48.5°C (119.3°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, clothing). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In May, the average relative humidity is 72%.

Rainfall

In Sigiriya, Sri Lanka, in May, it is raining for 17.4 days, with typically 83mm (3.27") of accumulated precipitation. In Sigiriya, during the entire year, the rain falls for 196.8 days and collects up to 943mm (37.13") of precipitation.

Daylight

The average length of the day in May is 12.5h.

Sunshine

In Sigiriya, the average sunshine is 11.2h.

UV index

Months with the highest UV index in Sigiriya are February through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in May in Sigiriya?

The average high-temperature, in May, is 34.2°C (93.6°F), while the average low-temperature is 24.5°C (76.1°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in May is computed to be 48.5°C (119.3°F).

What is the average humidity in May in Sigiriya?

In Sigiriya, Sri Lanka, the average relative humidity in May is 72%.

How many days does it rain in May in Sigiriya?

In Sigiriya, Sri Lanka, in May, it is raining for 17.4 days, with typically 83mm (3.27") of accumulated precipitation.

What is the average length of the day in May in Sigiriya?

In Sigiriya, Sri Lanka, the average length of the day in May is 12.5h.

How many hours of sunshine does Sigiriya have in May?

In Sigiriya, the average sunshine in May is 11.2h.

What are the months with the highest UV index in Sigiriya?

February through October, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in May in Sigiriya?

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

Average temperature in May
Sigiriya, Sri Lanka

Average temperature in May - Sigiriya, Sri Lanka
  • Average high temperature in May: 34.2°C

The warmest month (with the highest average high temperature) is April (34.9°C).
Months with the lowest average high temperature are January and December (29.3°C).

  • Average low temperature in May: 24.5°C

The month with the highest average low temperature is June (24.8°C).
The coldest months (with the lowest average low temperature) are January and February (20°C).

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Average pressure in May
Sigiriya, Sri Lanka

Average pressure in May - Sigiriya, Sri Lanka
  • Average pressure in May: 1007.8mbar

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

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Average wind speed in May
Sigiriya, Sri Lanka

Average wind speed in May - Sigiriya, Sri Lanka
  • Average wind speed in May: 15.9km/h

The windiest month (with the highest average wind speed) is June (23.8km/h).
The calmest month (with the lowest average wind speed) is April (7.1km/h).

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Average humidity in May
Sigiriya, Sri Lanka

Average humidity in May - Sigiriya, Sri Lanka
  • Average humidity in May: 72%

The month with the highest relative humidity is December (84%).
Months with the lowest relative humidity are June, July, August and September (67%).

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Average rainfall in May
Sigiriya, Sri Lanka

Average rainfall in May - Sigiriya, Sri Lanka
  • Average rainfall in May: 83mm

The wettest month (with the highest rainfall) is October (214mm).
The driest month (with the least rainfall) is June (15mm).

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Average rainfall days in May
Sigiriya, Sri Lanka

Average rainfall days in May - Sigiriya, Sri Lanka
  • Average rainfall days in May: 17.4 days

The month with the highest number of rainy days is November (24.1 days).
The month with the least rainy days is June (7.8 days).

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

Average daylight in May / Average sunshine in May - Sigiriya, Sri Lanka
  • Average daylight in May: 12.5h

The month with the longest days is June (Average daylight: 12.6h).
Months with the shortest days are January and December (Average daylight: 11.7h).

  • Average sunshine in May: 11.2h

The month with the most sunshine is June (Average sunshine: 11.3h).
The month with the least sunshine is December (Average sunshine: 4.9h).

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Average sunshine days in May
Sigiriya, Sri Lanka

Average sunshine days in May - Sigiriya, Sri Lanka
  • Average sunshine days in May: 10.4 days

The month with the most sunshine days is July (16 days).
The month with the least sunshine days is November (4.2 days).

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Average UV index in May
Sigiriya, Sri Lanka

Average UV index in May - Sigiriya, Sri Lanka
  • Average UV index in May: 7

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

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Average cloud cover in May
Sigiriya, Sri Lanka

Average cloud cover in May - Sigiriya, Sri Lanka
  • Average cloud cover in May: 26

The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is May (Cloud cover 26).

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Average visibility in May
Sigiriya, Sri Lanka

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

Months with the highest visibility are May, June, July, August and September (10km).
Months with the lowest visibility are January and December (7km).

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