May weather forecast
Wattappola, Sri Lanka

May

Weather in May

May, the last month of the spring in Wattappola, is also a hot month, with an average temperature ranging between max 30.1°C (86.2°F) and min 21.8°C (71.2°F).

Temperature

May's onset sees an average high-temperature of a still hot 30.1°C (86.2°F), exhibiting a slight fluctuation from the previous month. During May, Wattappola's temperature falls to a steady low-temperature average of 21.8°C (71.2°F).

Heat index

The heat index value for May is estimated at a sweltering 38°C (100.4°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in May in Wattappola is 80%.

Rainfall

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

Daylight

In Wattappola, Sri Lanka, the average length of the day in May is 12h and 27min.
On the first day of May in Wattappola, Sri Lanka, sunrise is at 05:53 and sunset at 18:16. On the last day of the month, sunrise is at 05:50 and sunset at 18:21 +0530.

Sunshine

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

UV index

The months with the highest UV index in Wattappola are January through September, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in May leads to these recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

How hot is May in Wattappola?
The average high-temperature and low-temperature during May are 30.1°C (86.2°F) and 21.8°C (71.2°F) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in May is estimated at 38°C (100.4°F).
What is the average humidity in May in Wattappola?
In May, the average relative humidity in Wattappola, Sri Lanka, is 80%.
How many days does it rain in May in Wattappola?
In Wattappola, during May, the rain falls for 28.6 days and regularly aggregates up to 163mm (6.42") of precipitation.
What is the average length of the day in May in Wattappola?
In May, the average day length in Wattappola is 12h and 27min.
When are sunrise and sunset in May in Wattappola?
On the first day of May in Wattappola, sunrise is at 05:53 and sunset at 18:16. On the last day of the month, sunrise is at 05:50 and sunset at 18:21 +0530.
How many hours of sunshine does Wattappola have in May?
In May, the average sunshine duration is 10.4h.
What is the month with the highest UV index in Wattappola?
January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Wattappola.
How high is the UV index in May in Wattappola?
In May, the average daily maximum UV index in Wattappola is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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 - Wattappola, Sri Lanka
Average temperature in May
Wattappola, 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 - Wattappola, Sri Lanka
Average pressure in May
Wattappola, 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 - Wattappola, Sri Lanka
Average wind speed in May
Wattappola, 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 - Wattappola, Sri Lanka
Average humidity in May
Wattappola, 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 - Wattappola, Sri Lanka
Average rainfall in May
Wattappola, 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 - Wattappola, Sri Lanka
Average rainfall days in May
Wattappola, 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 - Wattappola, Sri Lanka
Average daylight in May /
Average sunshine in May
Wattappola, 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 - Wattappola, Sri Lanka
Average sunshine days in May
Wattappola, 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 - Wattappola, Sri Lanka
Average UV index in May
Wattappola, 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 - Wattappola, Sri Lanka
Average cloud cover in May
Wattappola, 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 - Wattappola, Sri Lanka
Average visibility in May
Wattappola, 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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