May weather forecast
Hiripitiya, Sri Lanka

May

Weather in May

The last month of the spring, May, is also a hot month in Hiripitiya, Sri Lanka, with an average temperature ranging between min 23°C (73.4°F) and max 31.8°C (89.2°F).

Temperature

On the advent of May, Hiripitiya's average high-temperature exhibits a minor adjustment to a still tropical 31.8°C (89.2°F) from April's 32.9°C (91.2°F). Hiripitiya's nights in May cool down to an average low-temperature of 23°C (73.4°F).

Heat index

May's mean heat index is evaluated at a blisteringly hot 42°C (107.6°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in May in Hiripitiya is 77%.

Rainfall

In May, in Hiripitiya, Sri Lanka, the rain falls for 21.6 days. Throughout May, 117mm (4.61") of precipitation is accumulated. In Hiripitiya, Sri Lanka, during the entire year, the rain falls for 217.7 days and collects up to 1165mm (45.87") of precipitation.

Daylight

In Hiripitiya, the average length of the day in May is 12h and 28min.
On the first day of May, sunrise is at 05:53 and sunset at 18:17. On the last day of the month, sunrise is at 05:50 and sunset at 18:22 +0530.

Sunshine

The average sunshine in May is 10.7h.

UV index

March through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 7 in May transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Frequently asked questions

How hot is it in May?
May temperatures vary between a high-temperature of 31.8°C (89.2°F) and a low-temperature of 23°C (73.4°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in May is evaluated at 42°C (107.6°F).
What is the average humidity in May?
In Hiripitiya, the average relative humidity in May is 77%.
How many days does it rain in May in Hiripitiya?
In Hiripitiya, Sri Lanka, during May, the rain falls for 21.6 days and regularly aggregates up to 117mm (4.61") of precipitation.
What is the average length of the day in May?
The average day length in May is 12h and 28min.
What time are sunrise and sunset in May?
On the first day of May in Hiripitiya, sunrise is at 05:53 and sunset at 18:17. On the last day of the month, sunrise is at 05:50 and sunset at 18:22 +0530.
How long on average sun shines in May?
The average sunshine duration in May is 10.7h.
What are the months with the highest UV index?
March through September, with an average maximum UV index of 7, are months with the highest UV index.
What is the UV index intensity in May in Hiripitiya?
In May, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Hiripitiya, Sri Lanka
  • Average high temperature in May: 31.8°C

The warmest month (with the highest average high temperature) is April (32.9°C).
The month with the lowest average high temperature is December (28.6°C).

  • Average low temperature in May: 23°C

The month with the highest average low temperature is May (23°C).
The coldest month (with the lowest average low temperature) is February (18.9°C).

Average pressure in May
Hiripitiya, Sri Lanka
  • Average pressure in May: 1008.1mbar

The month with the highest atmospheric pressure is January (1011.9mbar).
The month with the lowest atmospheric pressure is June (1007.9mbar).

Average wind speed in May
Hiripitiya, Sri Lanka
  • Average wind speed in May: 11.2km/h

The windiest month (with the highest average wind speed) is June (16.5km/h).
The calmest month (with the lowest average wind speed) is April (5.6km/h).

Average humidity in May
Hiripitiya, Sri Lanka
  • Average humidity in May: 77%

The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are March and September (72%).

Average rainfall in May
Hiripitiya, Sri Lanka
  • Average rainfall in May: 117mm

The wettest month (with the highest rainfall) is October (267mm).
The driest month (with the least rainfall) is June (29mm).

Average rainfall days in May
Hiripitiya, Sri Lanka
  • Average rainfall days in May: 21.6 days

The month with the highest number of rainy days is April (24.7 days).
The month with the least rainy days is February (11.8 days).

Average daylight in May /
Average sunshine in May
Hiripitiya, Sri Lanka
  • Average daylight in May: 12h and 3min

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: 10h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in May
Hiripitiya, Sri Lanka
  • Average sunshine days in May: 5.3 days

The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is April (4 days).

Average UV index in May
Hiripitiya, Sri Lanka
  • Average UV index in May: 7

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

Average cloud cover in May
Hiripitiya, Sri Lanka
  • Average cloud cover in May: 31

The months with the most cloud cover are November and December (Cloud cover 46).
The month with the least cloud cover is March (Cloud cover 24).

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

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, November and December (8km).

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