May weather forecast
Aladeniya, Sri Lanka

May

Weather in May

The last month of the spring, May, is another tropical month in Aladeniya, Sri Lanka, with an average temperature fluctuating between 21.8°C (71.2°F) and 30.1°C (86.2°F).

Temperature

The transition from April to May sees an average high-temperature of a still hot 30.1°C (86.2°F), indicating a minor variance from the prior month. In Aladeniya, the average low-temperature during the month of May is an agreeable 21.8°C (71.2°F).

Heat index

The average heat index in May is calculated to be a very hot 38°C (100.4°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In Aladeniya, Sri Lanka, the average relative humidity in May is 80%.

Rainfall

In May, in Aladeniya, the rain falls for 28.6 days. Throughout May, 163mm (6.42") of precipitation is accumulated. Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

The average length of the day in May in Aladeniya is 12h and 28min.
On the first day of May, sunrise is at 05:53 and sunset at 18:16. On the last day of the month, sunrise is at 05:49 and sunset at 18:21 +0530.

Sunshine

In Aladeniya, the average sunshine in May is 10.4h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Aladeniya. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In May, an average UV index of 6 transforms into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.

Frequently asked questions

Is it hot in Aladeniya during May?
In Aladeniya, 30.1°C (86.2°F) is the average high-temperature and 21.8°C (71.2°F) is the average low-temperature during May. The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in May is calculated to be 38°C (100.4°F).
What is the average humidity in May in Aladeniya?
In Aladeniya, the average relative humidity in May is 80%.
How much does it rain in Aladeniya in May?
In May, the rain falls for 28.6 days. Throughout May, 163mm (6.42") of precipitation is accumulated.
How many hours of daylight does Aladeniya have in May?
In May, the average day length is 12h and 28min.
When is the sunrise / sunset in May in Aladeniya?
In May, on the first day of the month, sunrise is at 05:53 and sunset at 18:16. On the last day of the month, in Aladeniya, sunrise is at 05:49 and sunset at 18:21 +0530.
How many hours of sunshine does Aladeniya have in May?
In Aladeniya, Sri Lanka, the average sunshine duration in May is 10.4h.
What is the month with the highest UV index in Aladeniya?
January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Aladeniya.
What is the UV index reading in May in Aladeniya?
In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk 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 - Aladeniya, Sri Lanka
Average temperature in May
Aladeniya, Sri Lanka
  • Average high temperature in May: 30.1°C

The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).

  • Average low temperature in May: 21.8°C

The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).

Average pressure in May - Aladeniya, Sri Lanka
Average pressure in May
Aladeniya, Sri Lanka
  • Average pressure in May: 1008.2mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).

Average wind speed in May - Aladeniya, Sri Lanka
Average wind speed in May
Aladeniya, Sri Lanka
  • Average wind speed in May: 9.3km/h

The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).

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

The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).

Average rainfall in May - Aladeniya, Sri Lanka
Average rainfall in May
Aladeniya, Sri Lanka
  • Average rainfall in May: 163mm

The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).

Average rainfall days in May - Aladeniya, Sri Lanka
Average rainfall days in May
Aladeniya, Sri Lanka
  • Average rainfall days in May: 28.6 days

The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).

Average daylight in May / Average sunshine in May - Aladeniya, Sri Lanka
Average daylight in May /
Average sunshine in May
Aladeniya, 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: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in May - Aladeniya, Sri Lanka
Average sunshine days in May
Aladeniya, Sri Lanka
  • Average sunshine days in May: 1.2 days

The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).

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

The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).

Average cloud cover in May - Aladeniya, Sri Lanka
Average cloud cover in May
Aladeniya, Sri Lanka
  • Average cloud cover in May: 35

The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).

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

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).

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