March weather forecast
Nantes, Brazil

March, the first month of the autumn in Nantes, is still a warm month, with an average temperature fluctuating between 20.1°C (68.2°F) and 28.7°C (83.7°F).

Temperature

Nantes's March reports an average high-temperature of a still warm 28.7°C (83.7°F), exhibiting a minor difference from February. During March, the nighttime temperature averages of 20.1°C (68.2°F).

Heat index

For March, the heat index is appraised at a torrid 35°C (95°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

February and March, with an average relative humidity of 84%, are the most humid months.

Rainfall

In March, in Nantes, the rain falls for 24.1 days. Throughout March, 140mm (5.51") of precipitation is accumulated. Throughout the year, in Nantes, there are 196.8 rainfall days, and 1260mm (49.61") of precipitation is accumulated.

Daylight

In Nantes, the average length of the day in March is 12h and 13min.
On the first day of the month, sunrise is at 06:21 and sunset at 18:52. On the last day of March, sunrise is at 06:32 and sunset at 18:25 -03.

Sunshine

The average sunshine in March in Nantes is 8h.

UV index

The months with the highest UV index are January through March, June through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In March, the maximum UV index of 6 transforms into these recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.