March weather forecast
Angra dos Reis, Brazil

As March rolls in, it brings a negligible decrease in temperature and humidity in Angra dos Reis. Compared to the preceding month, there's a subtle drop in sea temperature, reaching 26.1°C (79°F). A slight decrease in daily sunshine duration marks March, while rainfall continues to keep the town well-hydrated. As the day warms up, evenings remain pleasant, providing an excellent opportunity to unwind by the mesmerizing coastline.

Temperature

Angra dos Reis experiences an average high-temperature of a moderately hot 29.5°C (85.1°F) in March, subtly different from February's 30.4°C (86.7°F). During March, Angra dos Reis witnesses a consistent average low-temperature of 22.5°C (72.5°F).

Heat index

March's heat index is calculated to be a very hot 36°C (96.8°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. 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 especially crucial for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In March, the average relative humidity is 81%.

Rainfall

In March, the rain falls for 15 days. Throughout March, 237mm (9.33") of precipitation is accumulated. In Angra dos Reis, during the entire year, the rain falls for 165 days and collects up to 1977mm (77.83") of precipitation.

Sea temperature

March is the month with the warmest seawater in Angra dos Reis, Brazil, with an average sea temperature of 26.1°C (79°F).
Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as excellent and extremely agreeable for enduring enjoyment in water activities.

Daylight

In March, the average length of the day is 12h and 13min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:25. On the last day of March, in Angra dos Reis, sunrise is at 06:05 and sunset at 17:57 -03.

Sunshine

In March, the average sunshine is 5h.

UV index

January through March, November and December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In March, the maximum UV index of 12 suggests these recommendations:
Carry out all important precautions, unprotected skin could get burns in no time. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days. Despite the cloudy weather, sunscreen with a sun protection factor of at least 30 should be liberally applied and reapplied, including after a swim or outdoor activity. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.