May weather forecast
Matara, Sri Lanka

May records the highest rainfall of 54mm (2.13"), marking a significant jump from 46mm (1.81") in April. Despite the uptick in rainfall, the city is steeped in a comforting warmth. While rain might dampen some outdoor plans, it brings a cool relief in the tropical climate. The combination of high humidity and wind speed results in a refreshing ambiance. The regularity of sunshine and daylight hours makes it ideal for tourists or locals who embrace a cooler climate.

Temperature

Matara registers an average high-temperature of a still hot 30.3°C (86.5°F) at the commencement of May, closely related to the preceding month. Matara's nocturnal average in May closely mirrors its daytime temperatures, settling at a warm 26.3°C (79.3°F).

Heat index

For most parts of May, the heat index is estimated at a torrid 39°C (102.2°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

May, September and November, with an average relative humidity of 81%, are the most humid months in Matara.

Rainfall

In May, in Matara, the rain falls for 15.6 days. Throughout May, 54mm (2.13") of precipitation is accumulated. Throughout the year, there are 180 rainfall days, and 509mm (20.04") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Matara is 29.1°C (84.4°F).
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

In Matara, Sri Lanka, the average length of the day in May is 12h and 23min.
On the first day of May, sunrise is at 05:54 and sunset at 18:14. On the last day of the month, sunrise is at 05:52 and sunset at 18:18 +0530.

Sunshine

In May, the average sunshine is 9.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Matara. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In May, the maximum UV index of 7 translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Caution! The Sun's UV rays become stronger due to reflections from water and sand.