March weather forecast
Cabo Frio, Brazil

March in Cabo Frio reveals mild weather conditions, with a traceable downward shift from February's high temperatures. However, this month sees the year's highest rainfall at 89mm (3.5"), resulting in a significant increase in the number of rainy days. The overall atmosphere stays comfortably warm with clear visibility. While still maintaining suitable conditions for outdoor activities, Cabo Frio sees a decrease in daylight hours in March. As we transition into April, the weather shows signs of subtle cooling.

Temperature

In March, Cabo Frio's weather conditions record an average high-temperature of a still warm 27.2°C (81°F), demonstrating little divergence from the preceding month. The temperature in Cabo Frio during March experiences a small drop from daytime peaks, recording an average of 24.4°C (75.9°F) at night.

Heat index

In March, the average heat index is appraised at a tropical 30°C (86°F). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.
The heat index's values are generally associated with conditions in shade and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

In Cabo Frio, the average relative humidity in March is 81%.

Rainfall

In Cabo Frio, in March, during 18.9 rainfall days, 89mm (3.5") of precipitation is typically accumulated. Throughout the year, in Cabo Frio, there are 173.2 rainfall days, and 733mm (28.86") of precipitation is accumulated.

Sea temperature

March is the month with the warmest seawater in Cabo Frio, with an average sea temperature of 25.8°C (78.4°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Cabo Frio, Brazil, 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.

Sunshine

In Cabo Frio, the average sunshine in March is 8.5h.

UV index

The months with the lowest UV index are March through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during March translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Beware! Reflections from sand and water can intensify the Sun's UV radiation.