May weather forecast
Oruwala, Sri Lanka

May

Weather in May

May, the last month of the spring in Oruwala, is another hot month, with temperature in the range of an average low of 26.3°C (79.3°F) and an average high of 30.6°C (87.1°F).

Temperature

Oruwala records a slight change with May's average high-temperatures adjusting to a still tropical 30.6°C (87.1°F) from April's 31.8°C (89.2°F). May nights experience a minor temperature downturn to a warm 26.3°C (79.3°F).

Heat index

The heat index value for May is evaluated at a blistering 40°C (104°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Oruwala, the average relative humidity in May is 81%.

Rainfall

In Oruwala, in May, during 28.8 rainfall days, 306mm (12.05") of precipitation is typically accumulated. Throughout the year, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

In Oruwala, the average length of the day in May is 12h and 26min.
On the first day of May in Oruwala, Sri Lanka, sunrise is at 05:55 and sunset at 18:18. On the last day of the month, sunrise is at 05:52 and sunset at 18:22 +0530.

Sunshine

In May, the average sunshine is 8.6h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Frequently asked questions

How hot is it in Oruwala in May?
In Oruwala, 30.6°C (87.1°F) is the average high-temperature and 26.3°C (79.3°F) is the average low-temperature during May. The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in May is evaluated at 40°C (104°F).
What is the average humidity in May in Oruwala?
In Oruwala, Sri Lanka, the average relative humidity in May is 81%.
How many days does it rain in May in Oruwala?
In Oruwala, Sri Lanka, in May, during 28.8 rainfall days, 306mm (12.05") of precipitation is typically accumulated.
What is the average length of the day in May in Oruwala?
In May, the average day length in Oruwala is 12h and 26min.
What time are sunrise and sunset in May in Oruwala?
On the first day of May in Oruwala, Sri Lanka, sunrise is at 05:55 and sunset at 18:18. On the last day of the month, sunrise is at 05:52 and sunset at 18:22 +0530.
How many hours of sunshine does Oruwala have in May?
In May, the average sunshine duration in Oruwala, Sri Lanka, is 8.6h.
What is the month with the lowest UV index in Oruwala?
The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6.
How high is the UV index in May in Oruwala?
In May, the average daily maximum UV index in Oruwala, Sri Lanka, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's 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 - Oruwala, Sri Lanka
Average temperature in May
Oruwala, Sri Lanka
  • Average high temperature in May: 30.6°C

The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).

  • Average low temperature in May: 26.3°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).

Average pressure in May - Oruwala, Sri Lanka
Average pressure in May
Oruwala, Sri Lanka
  • Average pressure in May: 1008.6mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).

Average wind speed in May - Oruwala, Sri Lanka
Average wind speed in May
Oruwala, Sri Lanka
  • Average wind speed in May: 12.9km/h

The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).

Average humidity in May - Oruwala, Sri Lanka
Average humidity in May
Oruwala, Sri Lanka
  • Average humidity in May: 81%

The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).

Average rainfall in May - Oruwala, Sri Lanka
Average rainfall in May
Oruwala, Sri Lanka
  • Average rainfall in May: 306mm

The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).

Average rainfall days in May - Oruwala, Sri Lanka
Average rainfall days in May
Oruwala, Sri Lanka
  • Average rainfall days in May: 28.8 days

The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).

Average daylight in May / Average sunshine in May - Oruwala, Sri Lanka
Average daylight in May /
Average sunshine in May
Oruwala, Sri Lanka
  • Average daylight in May: 12h and 2min

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: 8h and 4min

The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

Average sunshine days in May - Oruwala, Sri Lanka
Average sunshine days in May
Oruwala, Sri Lanka
  • Average sunshine days in May: 1.3 days

The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).

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

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

Average cloud cover in May - Oruwala, Sri Lanka
Average cloud cover in May
Oruwala, Sri Lanka
  • Average cloud cover in May: 54

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).

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

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

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