March weather forecast
Dehiwala, Sri Lanka

The onset of March in Dehiwala brings a shift in the city's climate, with temperatures and humidity escalating. With the setting of February, March distinguishes itself as a warmer, more humid month, modulating the city's environment. Observing the meteorological trend, the rainfall reaches 69mm (2.72"), quite a significant jump from February. As March tapers off, the city readies itself for April's inevitable advent of increased rainfall and slightly cooler temperature dips in the evening.

Temperature

The transition into March notes an average high-temperature of a still tropical 31.3°C (88.3°F), revealing a mild distinction from the 31.2°C (88.2°F) in February. Dehiwala's March nights cool down to an average low-temperature of 25°C (77°F).

Heat index

For March, the heat index is estimated at a scorching 41°C (105.8°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are especially crucial for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

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

Rainfall

In March, the rain falls for 20.2 days. Throughout March, 69mm (2.72") of precipitation is accumulated. Throughout the year, in Dehiwala, Sri Lanka, there are 285.6 rainfall days, and 2201mm (86.65") of precipitation is accumulated.

Sea temperature

In Dehiwala, Sri Lanka, in March, the average water temperature is 29.1°C (84.4°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

The average length of the day in March in Dehiwala 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, in Dehiwala, sunrise is at 06:09 and sunset at 18:20 +0530.

Sunshine

In Dehiwala, the average sunshine in March is 9h.

UV index

January through April, June, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Dehiwala. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In March, a daily maximum UV index of 7 leads to the following instructions:
Fend off overexposure. Sun protection is vital. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Enhance your sun protection with tightly woven, yet airy clothing. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.