May weather forecast
Mattakkuliya, Sri Lanka

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Weather in May

May, the last month of the spring in Mattakkuliya, is another tropical month, with an average temperature varying between 30.6°C (87.1°F) and 26.3°C (79.3°F).

Temperature

The shift into May records an average high-temperature of a still tropical 30.6°C (87.1°F), subtly varied from April's 31.8°C (89.2°F). Mattakkuliya experiences a steady nighttime temperature of 26.3°C (79.3°F) throughout the month of May.

Heat index

May's mean heat index is evaluated at a blistering 40°C (104°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

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

Rainfall

In May, in Mattakkuliya, the rain falls for 28.8 days. Throughout May, 306mm (12.05") of precipitation is accumulated. Throughout the year, in Mattakkuliya, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

In May, the average length of the day in Mattakkuliya 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 18:23 +0530.

Sunshine

In Mattakkuliya, Sri Lanka, the average sunshine in May 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 reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In May, the maximum UV index of 6 suggests this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

How hot is May in Mattakkuliya?

In Mattakkuliya, 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. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in May is evaluated at 40°C (104°F).

What is the average humidity in May in Mattakkuliya?

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

How many days does it rain in May in Mattakkuliya?

In Mattakkuliya, 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 Mattakkuliya?

In May, the average day length in Mattakkuliya, Sri Lanka, is 12h and 26min.

When is the sunrise / sunset in May in Mattakkuliya?

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, sunrise is at 05:53 and sunset at 18:23 +0530.

How long on average sun shines in May in Mattakkuliya?

In Mattakkuliya, Sri Lanka, the average sunshine duration in May is 8.6h.

When is the lowest UV index in Mattakkuliya?

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 Mattakkuliya?

In Mattakkuliya, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Average temperature in May
Mattakkuliya, Sri Lanka

Average temperature in May - Mattakkuliya, 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).

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Average pressure in May
Mattakkuliya, Sri Lanka

Average pressure in May - Mattakkuliya, 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).

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Average wind speed in May
Mattakkuliya, Sri Lanka

Average wind speed in May - Mattakkuliya, 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).

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Average humidity in May
Mattakkuliya, Sri Lanka

Average humidity in May - Mattakkuliya, 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%).

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Average rainfall in May
Mattakkuliya, Sri Lanka

Average rainfall in May - Mattakkuliya, 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).

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Average rainfall days in May
Mattakkuliya, Sri Lanka

Average rainfall days in May - Mattakkuliya, 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).

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

Average daylight in May / Average sunshine in May - Mattakkuliya, 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).

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Average sunshine days in May
Mattakkuliya, Sri Lanka

Average sunshine days in May - Mattakkuliya, 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).

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Average UV index in May
Mattakkuliya, Sri Lanka

Average UV index in May - Mattakkuliya, 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).

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Average cloud cover in May
Mattakkuliya, Sri Lanka

Average cloud cover in May - Mattakkuliya, 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).

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Average visibility in May
Mattakkuliya, Sri Lanka

Average visibility in May - Mattakkuliya, 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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Mattakkuliya, Sri Lanka

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