March weather forecast
Polonnaruwa, Sri Lanka

March heralds a stark contrast in Polonnaruwa's weather, as it departs from the cool and damp February to embrace relatively warmer and drier weather. The onset of the typically hot tropical climate in Sri Lanka is distinguishable. As a prelude to the hot and dry April, March experiences an average high temperature of 33.8°C (92.8°F). The month concludes with a growing anticipation of the heat wave in the succeeding month.

Temperature

The onset of March brings an average high-temperature of a still tropical 33.8°C (92.8°F), nearly matching the February temperature. Polonnaruwa, in March, experiences a marked contrast from daytime zeniths to a steady average low-temperature of 21.1°C (70°F).

Heat index

March's mean heat index is evaluated at a blazing hot 48°C (118.4°F). Keep alert: Heat cramps and heat exhaustion are probable. Heatstroke is a potential danger with continued physical activity.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In March, the average relative humidity is 73%.

Rainfall

In Polonnaruwa, in March, it is raining for 14 days, with typically 38mm (1.5") of accumulated precipitation. Throughout the year, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Daylight

The average length of the day in March is 12h and 5min.
On the first day of the month, sunrise is at 06:18 and sunset at 18:17. On the last day of March, sunrise is at 06:04 and sunset at 18:15 +0530.

Sunshine

The average sunshine in March is 9.1h.

UV index

February through October, 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 unsafe exposure to UV radiation for the ordinary person.
Note: An average maximum UV index of 7 in March leads to these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.