May weather forecast
Pahalagama, Sri Lanka

May, the last month of the spring in Pahalagama, is another tropical month, with temperature in the range of an average high of 31.8°C (89.2°F) and an average low of 23°C (73.4°F).

Temperature

During May, the average high-temperature is a still tropical 31.8°C (89.2°F), maintaining a close resemblance to that of the preceding month. Nighttime temperatures in Pahalagama hover around an average low of 23°C (73.4°F) in May.

Heat index

During May, the heat index is evaluated at an extremely hot 42°C (107.6°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In May, the average relative humidity in Pahalagama is 77%.

Rainfall

In May, the rain falls for 21.6 days. Throughout May, 117mm (4.61") of precipitation is accumulated. In Pahalagama, during the entire year, the rain falls for 218.8 days and collects up to 1175mm (46.26") of precipitation.

Daylight

In Pahalagama, Sri Lanka, the average length of the day in May is 12h and 27min.
On the first day of May in Pahalagama, sunrise is at 05:55 and sunset at 18:18. On the last day of the month, sunrise is at 05:52 and sunset at 18:23 +0530.

Sunshine

In Pahalagama, 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 value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.