March weather forecast
Chennai, India

March brings with it a noticeable transition in Chennai's weather, with a higher temperature of 30.9°C (87.6°F) compared to that of February. From the mellow coolness of winter, this month sees the city opening its doors to the warmth of approaching summer. The drying trend in rain continues from the last month, maintaining a relatively arid atmosphere. A modest rise in daylight hours compliments the increased temperature, paving the way for more outdoor activities during the day. Despite being the gateway to the sweltering summer, March's weather remains essentially comfortable in Chennai.

Temperature

The beginning of March in Chennai records an average high-temperature of a hot 30.9°C (87.6°F), almost echoing the conditions of the previous month. Throughout March, Chennai experiences a low-temperature average of 25.6°C (78.1°F).

Heat index

Throughout March, the heat index is evaluated at a torrid 38°C (100.4°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

In Chennai, the average relative humidity in March is 71%.

Rainfall

In Chennai, during March, the rain falls for 3.8 days and regularly aggregates up to 7mm (0.28") of precipitation. Throughout the year, there are 157.6 rainfall days, and 823mm (32.4") of precipitation is accumulated.

Sea temperature

In Chennai, the average seawater temperature in March is 28.1°C (82.6°F).
Note: With water temperature from 25°C (77°F) to 29°C (84.2°F), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.

Daylight

The average length of the day in March is 12h and 4min.
On the first day of the month, sunrise is at 6:24 am and sunset at 6:17 pm. On the last day of March, in Chennai, India, sunrise is at 6:05 am and sunset at 6:20 pm IST.

Sunshine

In Chennai, the average sunshine in March is 9.7h.

UV index

In March, the average daily maximum UV index in Chennai is 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 7 during March leads to these advisories:
Take precautions against overexposure. Protection against sun damage is needed. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Stay cautious! Sand and water reflections increase UV radiation potency.