May weather forecast
Santa Maria do Tocantins, Brazil

May, the last month of the autumn in Santa Maria do Tocantins, is also a hot month, with an average temperature varying between 31°C (87.8°F) and 22.1°C (71.8°F).

Temperature

The commencement of May brings an average high-temperature of a still hot 31°C (87.8°F), marking an inconsequential divergence from April. In May, the nighttime temperature in Santa Maria do Tocantins lowers to an average of 22.1°C (71.8°F).

Heat index

For most parts of May, the heat index is estimated at a blistering 40°C (104°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Santa Maria do Tocantins, Brazil, the average relative humidity in May is 77%.

Rainfall

In Santa Maria do Tocantins, Brazil, in May, during 19 rainfall days, 65mm (2.56") of precipitation is typically accumulated. Throughout the year, there are 220.5 rainfall days, and 1134mm (44.65") of precipitation is accumulated.

Daylight

In Santa Maria do Tocantins, the average length of the day in May is 11h and 43min.
On the first day of the month, sunrise is at 06:14 and sunset at 18:01. On the last day of May, in Santa Maria do Tocantins, sunrise is at 06:19 and sunset at 17:58 -03.

Sunshine

The average sunshine in May in Santa Maria do Tocantins is 8.4h.

UV index

February, March, May through November, with an average maximum UV index of 7, are months with the highest UV index in Santa Maria do Tocantins. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, an average UV index of 7 transforms into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.