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

Peak temperatures are observed in March and April, averaging a high-temperature of 30.3°C (86.5°F).

Heat index

March's heat index is computed to be a torrid 38°C (100.4°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. With 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 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. 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. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

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. Throughout the year, in Unawatuna, there are 286.9 rainfall days, and 1974mm (77.72") of precipitation is accumulated.

Sea temperature

In March, the average sea temperature is 29°C (84.2°F).
Note: In water activities such as swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed highly pleasurable for extended periods without any unease.

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

In March, the average sunshine 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 value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 7 in March translates into the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. 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. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Note! Reflective surfaces like sand and water heighten the UV radiation levels.