May weather forecast
Batuwandara, Sri Lanka

May

Weather in May

The last month of the spring, May, is another hot month in Batuwandara, Sri Lanka, with an average temperature ranging between max 30.2°C (86.4°F) and min 26.3°C (79.3°F).

Temperature

April's transformation into May witnesses an average high-temperature of a still hot 30.2°C (86.4°F), noting a minor change from the preceding month. An average low-temperature of 26.3°C (79.3°F) characterizes Batuwandara's May nights.

Heat index

The heat index value for May is estimated at a torrid 39°C (102.2°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. 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 Batuwandara, the average relative humidity in May is 81%.

Rainfall

In Batuwandara, Sri Lanka, in May, it is raining for 28 days, with typically 303mm (11.93") of accumulated precipitation. In Batuwandara, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.

Daylight

In May, the average length of the day in Batuwandara, Sri Lanka, is 12h and 26min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:18. On the last day of May, sunrise is at 05:53 and sunset at 18:22 +0530.

Sunshine

In Batuwandara, the average sunshine in May is 8.7h.

UV index

May, June and August, with an average maximum UV index of 6, are months with the lowest UV index in Batuwandara. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 during May translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

How hot is May in Batuwandara?
In May, in Batuwandara, the average high-temperature is 30.2°C (86.4°F), and the average low-temperature is 26.3°C (79.3°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in May is estimated at 39°C (102.2°F).
What is the average humidity in May in Batuwandara?
In Batuwandara, the average relative humidity in May is 81%.
How many days does it rain in May in Batuwandara?
In Batuwandara, Sri Lanka, in May, during 28 rainfall days, 303mm (11.93") of precipitation is typically accumulated.
What is the average length of the day in May in Batuwandara?
In May, the average day length in Batuwandara is 12h and 26min.
What time are sunrise and sunset in May in Batuwandara?
In May, on the first day of the month, sunrise is at 05:56 and sunset at 18:18. On the last day of the month, in Batuwandara, sunrise is at 05:53 and sunset at 18:22 +0530.
How long on average sun shines in May in Batuwandara?
In May, the average sunshine duration is 8.7h.
When is the lowest UV index in Batuwandara?
May, June and August, with an average maximum UV index of 6, are months with the lowest UV index in Batuwandara.
How high is the UV index in May in Batuwandara?
In May, the average daily maximum UV index in Batuwandara, Sri Lanka, is 6. A UV Index of 6 to 7 symbolizes 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
Batuwandara, Sri Lanka
  • Average high temperature in May: 30.2°C

The warmest months (with the highest average high temperature) are March and April (31.3°C).
The month with the lowest average high temperature is August (28.6°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 (23.4°C).

Average pressure in May
Batuwandara, Sri Lanka
  • Average pressure in May: 1008.7mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.7mbar).

Average wind speed in May
Batuwandara, Sri Lanka
  • Average wind speed in May: 13.3km/h

The windiest month (with the highest average wind speed) is June (15.9km/h).
The calmest month (with the lowest average wind speed) is March (7.9km/h).

Average humidity in May
Batuwandara, 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 (75%).

Average rainfall in May
Batuwandara, Sri Lanka
  • Average rainfall in May: 303mm

The wettest month (with the highest rainfall) is June (350mm).
The driest month (with the least rainfall) is January (25mm).

Average rainfall days in May
Batuwandara, Sri Lanka
  • Average rainfall days in May: 28 days

The months with the highest number of rainy days are July and August (29.5 days).
The month with the least rainy days is January (8.9 days).

Average daylight in May /
Average sunshine in May
Batuwandara, 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 12min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).

Average sunshine days in May
Batuwandara, Sri Lanka
  • Average sunshine days in May: 1.2 days

The month with the most sunshine days is January (21 days).
The months with the least sunshine days are June and July (0.3 days).

Average UV index in May
Batuwandara, Sri Lanka
  • Average UV index in May: 6

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

Average cloud cover in May
Batuwandara, Sri Lanka
  • Average cloud cover in May: 52

The month with the most cloud cover is June (Cloud cover 55).
The month with the least cloud cover is January (Cloud cover 24).

Average visibility in May
Batuwandara, Sri Lanka
  • Average visibility in May: 9km

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

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