May weather forecast
Boa Vista, Brazil

May weather in Boa Vista is marked by the highest level of rainfall in the year, skyrocketing to 215mm (8.46"). This heavy rainfall lends a substantially cooler feel to the city, making it one of the most humid months. Despite the reduced sunshine hours, daylight remains fairly constant. The transition to the wet period is in full swing, with the environment responding to the infusion of rainwater.

Temperature

As April turns into May in Boa Vista, the average high-temperatures rest at a still tropical 30.8°C (87.4°F), showing a minor variation from the prior month. During May, an average low-temperature of 23.4°C (74.1°F) is observed in Boa Vista, Brazil.

Heat index

For most parts of May, the heat index is appraised at a blisteringly hot 40°C (104°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Boa Vista, the average relative humidity in May is 80%.

Rainfall

In Boa Vista, in May, it is raining for 26.9 days, with typically 215mm (8.46") of accumulated precipitation. Throughout the year, there are 241.8 rainfall days, and 1216mm (47.87") of precipitation is accumulated.

Daylight

The average length of the day in May in Boa Vista is 12h and 15min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:06. On the last day of May, in Boa Vista, sunrise is at 05:52 and sunset at 18:08 -04.

Sunshine

In May, the average sunshine is 8.5h.

UV index

The months with the highest UV index are January through May, July through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 7 during May morphs into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.