March weather forecast
Kalutara, Sri Lanka

This mid-season month of March comes with subtle weather variations. Compared to February, the region observes an increase in temperature, introducing warmer days. The maximum temperature reaches an average of 31.3°C (88.3°F), making the region hotter. Accompanying this warmth, a palpable increase in rainfall begins, preparing for the arrival of the rainy season. However, outdoor enthusiasts could still indulge in coastal activities as the rainfall doesn’t reach extreme levels yet.

Temperature

During March and April, Kalutara experiences its highest average temperatures, peaking at 31.3°C (88.3°F).

Heat index

The heat index for March is estimated at an extremely hot 41°C (105.8°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in March in Kalutara is 77%.

Rainfall

In Kalutara, Sri Lanka, in March, during 19.9 rainfall days, 61mm (2.4") of precipitation is typically accumulated. Throughout the year, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Sea temperature

In Kalutara, Sri Lanka, in March, the average water temperature is 29.1°C (84.4°F).
Note: For swimming, diving, and enjoying other water activities, the range of 25°C (77°F) to 29°C (84.2°F) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

In Kalutara, the average length of the day in March is 12h and 5min.
On the first day of the month, sunrise is at 06:22 and sunset at 18:22. On the last day of March, sunrise is at 06:08 and sunset at 18:19 +0530.

Sunshine

The average sunshine in March is 9h.

UV index

January through April, July, September 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 exposure to the Sun's UV rays for average individuals.
Note: In March, the average maximum UV index of 7 translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be wary! Reflections from sand and water make UV radiation more intense.