March weather forecast
Unawatuna, Sri Lanka

As the heat rises in March in Unawatuna, Sri Lanka, locals and tourists alike adapt to the changing weather conditions. With the highest temperature climbing to 30.3°C (86.5°F) and 21.3 rainfall days on average, the region enters its hot season traditionally. The thriving natural beauty of the region stands out, with a humidity level of approximately 77% supporting lush greenery. This is the period leading up to the wettest months, hence slightly heavier rainfall when compared to February. The month of April will follow with similar weather trends.

Temperature

In Unawatuna, the warmest months are March and April, registering an average high-temperature of 30.3°C (86.5°F).

Heat index

The heat index for March is appraised at a sweltering 38°C (100.4°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

February and March, with an average relative humidity of 77%, are the least humid months.

Rainfall

In March, the rain falls for 21.3 days. Throughout March, 68mm (2.68") of precipitation is accumulated. In Unawatuna, during the entire year, the rain falls for 286.9 days and collects up to 1974mm (77.72") of precipitation.

Sea temperature

In Unawatuna, the average seawater temperature in March is 29°C (84.2°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 Unawatuna, the average length of the day in March is 12h and 5min.
On the first day of March, sunrise is at 06:20 and sunset at 18:21. On the last day of the month, sunrise is at 06:07 and sunset at 18:18 +0530.

Sunshine

The average sunshine in March is 9.1h.

UV index

January through April, June through August, October through December, 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 threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 7 in March converts into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Heads up! UV intensity is amplified by reflections from water and sand.