May weather forecastValaichchenai, Sri Lanka

May

Weather in May

The last month of the spring, May, is another hot month in Valaichchenai, Sri Lanka, with an average temperature varying between 26.6°C (79.9°F) and 32.7°C (90.9°F).

Temperature

Valaichchenai marks the arrival of May with an average high-temperature of a still tropical 32.7°C (90.9°F), hardly different from April's 31.8°C (89.2°F). Valaichchenai, in May, experiences an average temperature of 26.6°C (79.9°F) at night.

Heat index

For May, the heat index is estimated at a blistering 44°C (111.2°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The average relative humidity in May is 74%.

Rainfall

In May, the rain falls for 20.7 days. Throughout May, 79mm (3.11") of precipitation is accumulated. Throughout the year, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Daylight

In Valaichchenai, the average length of the day in May is 12h and 29min.
On the first day of the month, sunrise is at 05:48 and sunset at 18:13. On the last day of May, in Valaichchenai, sunrise is at 05:45 and sunset at 18:18 +0530.

Sunshine

In May, the average sunshine in Valaichchenai, Sri Lanka, is 11.6h.

UV index

The months with the highest UV index are January through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in May, in Valaichchenai, is 32.7°C (90.9°F) and the average low-temperature is 26.6°C (79.9°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in May is estimated at 44°C (111.2°F).

The average relative humidity in May in Valaichchenai, Sri Lanka, is 74%.

In Valaichchenai, Sri Lanka, in May, during 20.7 rainfall days, 79mm (3.11") of precipitation is typically accumulated.

The average day length in May in Valaichchenai, Sri Lanka, is 12h and 29min.

On the first day of May, sunrise is at 05:48 and sunset at 18:13. On the last day of the month, sunrise is at 05:45 and sunset at 18:18 +0530.

The average sunshine duration in May in Valaichchenai, Sri Lanka, is 11.6h.

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

In Valaichchenai, Sri Lanka, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

31.8°C

32.7°C

33°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.8km/h

10.7km/h

12km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

7.4

6.2

10.8

Average UV index

Average cloud cover

22%

24%

Average visibility

10km

Average temperature in May
Valaichchenai, Sri Lanka

Average high temperature in May: 32.7°C

The warmest month (with the highest average high temperature) is June (33°C).
The month with the lowest average high temperature is January (27.3°C).

Average low temperature in May: 26.6°C

The month with the highest average low temperature is May (26.6°C).
The coldest month (with the lowest average low temperature) is January (24°C).

Average pressure in May
Valaichchenai, Sri Lanka

Average pressure in May: 1007.7mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1007.3mbar).

Average wind speed in May
Valaichchenai, Sri Lanka

Average wind speed in May: 9.2km/h

The windiest month (with the highest average wind speed) is January (13.9km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).

Average humidity in May
Valaichchenai, Sri Lanka

Average humidity in May: 74%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are June and July (68%).

Average rainfall in May
Valaichchenai, Sri Lanka

Average rainfall in May: 79mm

The wettest month (with the highest rainfall) is December (272mm).
The driest month (with the least rainfall) is June (30mm).

Average rainfall days in May
Valaichchenai, Sri Lanka

Average rainfall days in May: 20.7 days

The months with the highest number of rainy days are October and November (25.5 days).
The month with the least rainy days is March (12.8 days).

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

Average daylight in May: 12h and 30min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).

Average sunshine in May: 11h and 36min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in May
Valaichchenai, Sri Lanka

Average sunshine days in May: 6.2 days

The month with the most sunshine days is March (15.5 days).
The month with the least sunshine days is November (3.2 days).

Average UV index in May
Valaichchenai, Sri Lanka

Average UV index in May: 7

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

Average cloud cover in May
Valaichchenai, Sri Lanka

Average cloud cover in May: 24

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 22).

Average visibility in May
Valaichchenai, Sri Lanka

Average visibility in May: 10km

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