April weather forecast
Matara, Sri Lanka

April ushers in the peak of high temperatures, matching March's high at 31.1°C (88°F). Amid the heat, locals and tourists alike can enjoy the increased daylight hours and engage in outdoor activities. The city also receives higher levels of rainfall compared to the preceding month, a characteristic that lends a cooler feel to the environment as the day wears on. With a constant sea temperature and a slightly higher UV index, it is an excellent time to go snorkeling or deep-sea diving. As the pressure systems waver subtly, it paints a vibrant picture of the weather scenario in Matara during this month.

Temperature

March and April bring Matara's highest average temperatures, reaching a high of 31.1°C (88°F).

Heat index

In April, the average heat index is estimated at a blistering 41°C (105.8°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in April in Matara is 79%.

Rainfall

In April, the rain falls for 19.7 days. Throughout April, 46mm (1.81") of precipitation is accumulated. In Matara, Sri Lanka, during the entire year, the rain falls for 180 days and collects up to 509mm (20.04") of precipitation.

Sea temperature

The month with the warmest seawater in Matara is April, with an average sea temperature of 29.6°C (85.3°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

In April, the average length of the day is 12h and 15min.
On the first day of the month, sunrise is at 06:06 and sunset at 18:16. On the last day of April, in Matara, Sri Lanka, sunrise is at 05:55 and sunset at 18:14 +0530.

Sunshine

With an average of 9.7h of sunshine, April has the most sunshine of the year.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Matara, Sri Lanka. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in April interprets into the following advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Attention! The reflection of both water and sand can increase the intensity of UV rays.