March weather forecast
Kalmunai, Sri Lanka

March presents an interesting transitional phase in weather patterns in Kalmunai. The temperature continues its rise, but the city sees a departure from the pervasive rain of the previous months, with rainfall dwindling to 39mm (1.54"). The decrease in precipitation also brings a slight dimming in the city's humidity levels, settling at 76%. Though slight, the changes in temperature and rainfall patterns add an element of unpredictability to the weather. The city, thus, offers an intriguing mixture of sunshine and unanticipated showers.

Temperature

March brings a marginal elevation to a tropical 30.1°C (86.2°F) from February's 28.3°C (82.9°F) in Kalmunai's average high-temperatures. In Kalmunai, March nights witness a steady temperature drop to a moderately hot 24.8°C (76.6°F).

Heat index

The average heat index in March is computed to be a torrid 37°C (98.6°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In March, the average relative humidity is 76%.

Rainfall

In March, the rain falls for 12.8 days. Throughout March, 39mm (1.54") of precipitation is accumulated. In Kalmunai, during the entire year, the rain falls for 237.8 days and collects up to 1259mm (49.57") of precipitation.

Sea temperature

In March, the average sea temperature is 28.9°C (84°F).
Note: Water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.

Daylight

In Kalmunai, the average length of the day in March is 12h and 5min.
On the first day of the month, sunrise is at 06:15 and sunset at 18:14. On the last day of March, sunrise is at 06:01 and sunset at 18:12 +0530.

Sunshine

In Kalmunai, the average sunshine in March is 9.4h.

UV index

The months with the highest UV index in Kalmunai are January through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during March leads to these instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Attention! The combination of sand and water reflections enhances UV ray intensity.