March weather forecast
Arraial do Cabo, Brazil

March brings a transition period in Arraial do Cabo where the peak of summer fades, resulting in cooler daily highs of 30.1°C (86.2°F). The days of soaking under the sun at the beach remain delightful, albeit slightly less intense than the preceding months. Rainfall continues its steady trend, ensuring the region retains its vibrant green look. Visitors find the temperatures more tolerable during this month and still enjoy the city's outdoor attractions. This month also brings slightly shorter daylight hours, however, the atmospheric charm of this Brazilian gem under the setting sun cannot be underestimated.

Temperature

The shift from February to March corresponds with a decrease in the average high-temperature, down to a hot 30.1°C (86.2°F) from a torrid 35.4°C (95.7°F). Throughout March, Arraial do Cabo's nights cool down to an average of 22.8°C (73°F).

Heat index

For March, the heat index is computed to be a torrid 39°C (102.2°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to 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.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The months with the highest humidity in Arraial do Cabo are January through March, October through December, with an average relative humidity of 82%.

Rainfall

During March, Arraial do Cabo regularly aggregates up to 53mm (2.09") of precipitation. During the entire year, Arraial do Cabo aggregates up to 771mm (30.35") of precipitation.

Sea temperature

March is the month with the warmest seawater, with an average sea temperature of 25.8°C (78.4°F).
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

In Arraial do Cabo, the average length of the day in March is 12h and 13min.
On the first day of March, sunrise is at 05:44 and sunset at 18:16. On the last day of the month, sunrise is at 05:56 and sunset at 17:48 -03.