Bentota
Sri Lanka
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Bentota, Sri Lanka

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

Temperature

In May, the average high-temperature is relatively the same as in April - a still tropical 30.2°C (86.4°F). In Bentota, the average low-temperature is 26.3°C (79.3°F).

Heat index

The average heat index is estimated at a torrid 38.6°C (101.5°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, metabolic differences, wind). 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 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. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

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

Rainfall

In Bentota, during 28 rainfall days, 303mm (11.93") of precipitation is typically accumulated. Throughout the year, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Sea temperature

In Bentota, the average seawater temperature in May is 29.1°C (84.4°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in Bentota is 12.4h.

Sunshine

In Bentota, 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. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in May in Bentota?

In Bentota, Sri Lanka, in May, the average high-temperature is 30.2°C (86.4°F), and the average low-temperature is 26.3°C (79.3°F). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines relative humidity and air temperature, is appraised at 38.6°C (101.5°F).

What is the average humidity in May in Bentota?

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

How much does it rain in Bentota in May?

In Bentota, Sri Lanka, in May, it is raining for 28 days, with typically 303mm (11.93") of accumulated precipitation.

What is the sea water temperature in May in Bentota?

In May, the average sea temperature in Bentota, Sri Lanka, is 29.1°C (84.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in May in Bentota?

In May, the average length of the day is 12.4h.

How many hours of sunshine does Bentota have in May?

In May, the average sunshine is 8.7h.

When is the lowest UV index in Bentota?

Months with the lowest UV index in Bentota, Sri Lanka, are May, June and August, with an average maximum UV index of 6.

What is the UV index intensity in May in Bentota?

In Bentota, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.
Average temperature in May - Bentota, 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 humidity in May - Bentota, Sri Lanka
  • Average humidity in May: 81%

Months with the highest relative humidity are June, July and August (83%).
Months with the lowest relative humidity are January and February (75%).

Average rainfall in May - Bentota, 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 - Bentota, Sri Lanka
  • Average rainfall days in May: 28 days

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 sea temperature in May - Bentota, Sri Lanka
  • Average sea temperature in May: 29.1°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is July (27.3°C).

Average daylight in May / Average sunshine in May - Bentota, Sri Lanka
  • Average daylight in May: 12.4h

Months with the longest days are June and July (Average daylight: 12.5h).
Months with the shortest days are January, November and December (Average daylight: 11.8h).

  • Average sunshine in May: 8.7h

The month with the most sunshine is January (Average sunshine: 9.2h).
The month with the least sunshine is November (Average sunshine: 6.8h).

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

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