March weather forecast
Negombo, Sri Lanka

Negombo's weather in March experiences significant changes compared to February. Rainfall increases noticeably, transitioning into the wet season, and the city's vegetation flourishes. Although the humidity escalates, it is offset by comfortable temperatures and refreshing coastal winds. Even with the increased cloud cover, the significant daylight duration enhances the outdoor experience in Negombo. With the sea temperature rising, beach activities become more favorable.

Temperature

Negombo notes the warmest temperatures in March, with a high average of 32.1°C (89.8°F) and a low of 24.5°C (76.1°F).

Heat index

The average heat index in March is computed to be an extremely hot 43°C (109.4°F). Vigilance: Heat cramps and heat exhaustion are likely. The likelihood of heatstroke increases with continued activity.
In the scope of the heat index, its values resonate with shade and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Negombo, the average relative humidity in March is 75%.

Rainfall

In Negombo, Sri Lanka, in March, during 18.2 rainfall days, 55mm (2.17") of precipitation is typically accumulated. In Negombo, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Sea temperature

In March, the average sea temperature in Negombo is 29°C (84.2°F).
Note: Swimming, diving, and other water-related activities in temperatures between 25°C (77°F) and 29°C (84.2°F) are considered highly enjoyable and satisfying for longer durations without uneasiness.

Daylight

In March, the average length of the day in Negombo, Sri Lanka, is 12h and 5min.
On the first day of March, sunrise is at 06:23 and sunset at 18:22. On the last day of the month, sunrise is at 06:09 and sunset at 18:20 +0530.

Sunshine

The months with the most sunshine are January through April, with an average of 9.2h of sunshine.

UV index

January through April, July, September, November and 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 the ordinary person.
Note: In March, the maximum UV index of 7 transforms into these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Note! Reflective surfaces like sand and water heighten the UV radiation levels.